СПОСОБ ПОЛУЧЕНИЯ ПОЛИУРЕТАНОВОЙ ПЕНЫ С ПОМОЩЬЮ ПОРООБРАЗОВАТЕЛЯ, НАХОДЯЩЕГОСЯ В СВЕРХКРИТИЧЕСКОМ ИЛИ ОКОЛОКРИТИЧЕСКОМ СОСТОЯНИИ

Изобретение касается способа изготовления полиуретановой пены, причем используемый порообразователь находится в сверхкритическом состоянии. Описан способ изготовления полиуретановой пены, включающий в себя следующие стадии: - подготовка смеси, включающей в себя: A) компонент, способный реагировать с изоцианатами; B) детергентный компонент (ПАВ); C) компонент - порообразователь, выбранный из группы, которая включает в себя линейные, разветвленные или циклические алканы с 1-6 атомами углерода, линейные, разветвленные или циклические фторалканы с 1-6 атомами углерода, N, O, аргон и/или CO, причем компонент - порообразователь С) находится в сверхкритическом или околокритическом состоянии; D) полиизоцианатный компонент; - введение смеси, включающей в себя компоненты А), В), С) и D) в закрытую форму, причем закрытая форма устроена так, что ее внутренний объем и/или давление внутри нее можно путем внешнего воздействия изменить после введения смеси; - пребывание смеси, включающей в себя компоненты ...

СПОСОБ ПОЛУЧЕНИЯ ЭЛАСТИЧНЫХ ПЕНОПОЛИУРЕТАНОВ

Изобретение относится к способу получения эластичных пенополиуретанов, в котором в качестве вспенивающего вещества используется жидкий диоксид углерода. Описывается способ получения эластичных пенополиуретанов, включающий (а) взаимодействие полиольного компонента, полиизоцианатного компонента, вспенивающего вещества, включающего жидкий диоксид углерода, подходящего катализатора и, возможно, вспомогательных химических реагентов при давлении, достаточном для поддержания диоксида углерода в жидком состоянии, и (б) последующее понижение давления и взаимодействие смеси, полученной в стадии (а), с получением эластичного пенополиуретана. Используемый полиольный компонент включает полимерный полиол, включающий, по крайней мере, простой полиэфирполиол, имеющий среднюю номинальную функциональность, по крайней мере, 2,5, с диспергированными в нем от 2 до 50 мас.% полимерными частицами полистирола, стиролакрилонитрильного сополимера, полимочевинного или полиуретанового полимера, размер которых не превышает ...

СПОСОБ ПРОПИТКИ МАТРИЦЫ-НОСИТЕЛЯ ТВЕРДЫМИ И/ИЛИ ЖИДКИМИ СОЕДИНЕНИЯМИ С ПОМОЩЬЮ СЖАТЫХ ГАЗОВ И ПРОПИТАННЫЕ ТАКИМ СПОСОБОМ МАТЕРИАЛЫ

Настоящее изобретение относится к области использования сжатых газов сверхкритических газов в качестве растворителей в различных химических процессах и химико-технических процессах, преимущественно в фармацевтической, агрохимической, косметической и технической областях. Задачей изобретения является обеспечение возможности эффективно транспортировать пропитывающий агент с поверхности внутрь матрицы-носителя, причем должен быть охвачен как можно более широкий спектр применения. Способ пропитки матрицы-носителя твердыми и/или жидкими соединениями с помощью сжатого газа (смеси газов) заключается в том, что твердые или жидкие соединения и нерастворимую матрицу-носитель приводят в контакт с помощью сжатого газа при плотности газа между 0,15 и 1,3 кг/л в течение, по меньшей мере, двух несимметрично протекающих последовательностей перемены давления (пульсаций). При каждой отдельной пульсации продолжительностью от по меньшей мере 5 секунд до 60 минут промежуток времени достижения максимума давления ...

ПЕНОПЛАСТ ИЗ СОПОЛИМЕРА СТИРОЛА И АКРИЛОНИТРИЛА С АГЕНТОМ, ОСЛАБЛЯЮЩИМ ИНФРАКРАСНОЕ ИЗЛУЧЕНИЕ

Изобретение относится к полимерному пенопласту, включающему композицию сополимера стирола и акрилонитрила и агента, ослабляющего инфракрасное излучение. Количество полимеризованного акрилонитрила составляет 10-50 мас.% в расчете на массу сополимера стирола и акрилонитрила. Агент, ослабляющий инфракрасное излучение, выбран из углеродных саж и графитов. Пенопласт является экструдированным полимерным пенопластом, и он свободен от наличия сетки пузырьков на поверхности, свойственной вспененному гранулированному пенопласту. Описан способ получения пенопласта методом экструзии, где давление экструзии в пределах экструдера выше, чем после экструзии из экструдера. Вспенивание происходит после экструзии композиции для вспенивания из экструдера. Полимерный пенопласт может применяться между двух областей, которые могут отличаться температурой. Технический результат - высокая размерная целостность полимерного пенопласта на основе сополимера стирола и акрилонитрила и агента, ослабляющего инфракрасное ...

СПОСОБ ПОЛУЧЕНИЯ ПЕН НА ОСНОВЕ ТЕРМОПЛАСТИЧНЫХ ПОЛИУРЕТАНОВ

Изобретение относится к способу получения разбухших гранул из расплава полимера, содержащего вспенивающий агент. Способ получения вспененных частиц термопластичного полиуретана включает следующие стадии. Стадия плавления термопластичного полиуретана, осуществляемая в первом экструдере E1. Стадия впрыскивания газообразного вспенивающего агента, осуществляемая во втором экструдере E2. Стадия гомогенного пропитывания вспенивающего агента в расплав термопластичного полиуретана, осуществляемая в третьем экструдере E3. А также стадия экструзии пропитанного расплава термопластичного полиуретана через профилирующую планку и грануляции расплава в подводном устройстве для грануляции в условиях температуры и давления с образованием вспененных частиц термопластичного полиуретана. Технический результат изобретения заключается в повышении контроля технологических параметров. 4 з.п. ф-лы, 6 табл.

СПОСОБ ПОЛУЧЕНИЯ ПОЛИУРЕТАНОВОЙ ПЕНЫ С ПОМОЩЬЮ ПОРООБРАЗОВАТЕЛЯ, НАХОДЯЩЕГОСЯ В СВЕРХКРИТИЧЕСКОМ ИЛИ ОКОЛОКРИТИЧЕСКОМ СОСТОЯНИИ

Изобретение касается способа изготовления полиуретановой пены, причем используемый порообразователь находится в сверхкритическом состоянии. Описан способ изготовления полиуретановой пены, включающий в себя следующие стадии: - подготовка смеси, включающей в себя: A) компонент, способный реагировать с изоцианатами; B) детергентный компонент (ПАВ); C) компонент - порообразователь, выбранный из группы, которая включает в себя линейные, разветвленные или циклические алканы с 1-6 атомами углерода, линейные, разветвленные или циклические фторалканы с 1-6 атомами углерода, N2, O2, аргон и/или CO2, причем компонент - порообразователь С) находится в сверхкритическом или околокритическом состоянии; D) полиизоцианатный компонент; - введение смеси, включающей в себя компоненты А), В), С) и D) в закрытую форму, причем закрытая форма устроена так, что ее внутренний объем и/или давление внутри нее можно путем внешнего воздействия изменить после введения смеси; - пребывание смеси, включающей в себя компоненты ...

ТОЛСТАЯ ПРОСТРАНСТВЕННО-СТАБИЛЬНАЯ ПЕНА, ПОГЛОЩАЮЩАЯ ИНФРАКРАСНОЕ ИЗЛУЧЕНИЕ

... 1. Способ изготовления изделия из полимерной пены, включающий в себя:а) обеспечение первой полимерной пены, содержащей поглотитель инфракрасного излучения и получаемой с использованием вспенивающего средства, включающего в себя диоксид углерода; иb) обеспечение второй полимерной пены; ис) скрепление вместе первой и второй пен в слоистой ориентации для изготовления изделия из полимерной пены, имеющего толщину по меньшей мере 50 мм, которое пространственно стабильно.2. Способ по п.1, в котором первая полимерная пена остается открытой в изделии из пены.3. Способ по п.1, в котором каждая из первой и второй пены имеют первую поверхность, и первая поверхность первой пены скреплена с первой поверхностью второй пены.4. Способ по п.1, в котором по меньшей мере 50% первых поверхностей первой и второй пен, которые склеены одна с другой, свободны от поверхностной кожицы.5. Способ по п.1, в котором обе первая и вторая пены включают в себя поглотитель инфракрасного излучения.6. Способ по п.1, в котором ...

ПОЛИМЕРНАЯ ПЕНА, СОДЕРЖАЩАЯ БЕМИТНЫЙ ОКСИД АЛЮМИНИЯ

... 1. Способ получения полимерной пены, включающий следующие стадии, на которых:a) создают вспениваемую полимерную композицию, включающую пенообразующее средство, диспергированное в полимерной матрице, причем полимерная матрица имеет температуру размягчения; иb) подвергают вспениваемую полимерную композицию при температуре, равной температуре размягчения полимерной матрицы или превышающей ее, воздействию окружающей среды, имеющей давление, достаточно низкое, чтобы вызвать расширение вспениваемой полимерной композиции с образованием полимерной пены,причем вспениваемая полимерная композиция дополнительно включает бемитный оксид алюминия, диспергированный в полимерной матрице, и в котором более 50 процентов по весу полимеров в полимерной матрице представляют собой термопластические полимеры, выбранные из олефиновых полимеров, алкенилароматических полимеров, и сополимеров, содержащих как олефиновые, так и алкенилароматические компоненты.2. Способ по п.1, в котором способ представляет собой экструзионный ...

НОВЫЙ КРИСТАЛЛИЧЕСКИЙ ПЕНОМАТЕРИАЛ

... 1. Кристаллический пеноматериал, включающий множество из одной или нескольких групп, выбираемых из уретановых, изоциануратных и оксазолидоновых групп.2. Кристаллический пеноматериал по п.1, где, по меньшей мере, 50% ячеек пеноматериала имеют компоновку кубической или гексагональной плотной упаковки.3. Кристаллический пеноматериал по пп.1 и 2, где ячейки имеют диаметр 0,1 мкм - 1 см.4. Кристаллический пеноматериал по пп.1 и 2, где ячейки являются монодисперсными или бидисперсными.5. Кристаллический пеноматериал по п.3, где ячейки являются монодисперсными или бидисперсными.6. Способ получения кристаллического пеноматериала, включающего множество из одной или нескольких групп, выбираемых из уретановых, изоциануратных и оксазолидоновых групп, в результате создания сначала кристаллической компоновки газовых пузырьков в жидкой отверждаемой композиции, которая способна формировать множество из одной или нескольких вышеупомянутых групп, а после этого обеспечения формирования отверждаемой композицией ...

ДИСПЕРСИИ ОЛЕФИНОВЫХ БЛОК-СОПОЛИМЕРОВ

... 1. Дисперсия, содержащая: ! каталитический линейный олефиновый полиблок-интерполимер и, ! по меньшей мере, один диспергирующий агент; ! где каталитический линейный олефиновый полиблок-интерполимер содержит, по меньшей мере, один жесткий сегмент и, по меньшей мере, один мягкий сегмент. ! 2. Дисперсия по п.1, где каталитический линейный олефиновый полиблок-интерполимер содержит от 5 до 70 мас.%, по меньшей мере, одного жесткого сегмента. ! 3. Дисперсия по п.1, где олефиновый полиблок-интерполимер содержит от 15 до 60 мас.%, по меньшей мере, одного жесткого сегмента. ! 4. Дисперсия по п.1, где олефиновый полиблок-интерполимер содержит, по меньшей мере, один из этилен/α-олефиновых блок-интерполимеров, пропилен/α-олефиновый блок-интерполимер или их комбинации. ! 5. Дисперсия по п.3, где, по меньшей мере, один жесткий сегмент содержит от 0 до 5 мас.% α-олефина. !6. Дисперсия по п.3, где, по меньшей мере, один мягкий сегмент содержит от 5 до 60 мас.% α-олефина. ! 7. Дисперсия по п.1, где олефиновый ...

ПОЛИМЕРНЫЙ МАТЕРИАЛ ДЛЯ ТЕПЛОИЗОЛИРОВАННОГО КОНТЕЙНЕРА

... 1. Состав для формования теплоизолирующей ячеистой неароматической полимерной структуры, причем состав включаетпервый полимерный материал, содержащий по меньшей мере один полипропилен с высокой прочностью расплава, характеризующийся длинноцепочечным разветвлением,второй полимерный материал, содержащий по меньшей мере один полимер, выбранный из группы, состоящей из полипропилена, полиэтилена и их смесей, по меньшей мере один нуклеирующий агент, и по меньшей мере одну добавку, понижающую трение.2. Состав по п. 1, где первый материал представляет собой гомополимер.3. Состав по п. 1, где первый полимерный материал имеет прочность расплава не менее 36 согласно ISO 16790.4. Состав по п. 1, где первый полимерный материал имеет температуру плавления не менее 163°C (325,4°F).5. Состав по п. 1, где второй полимерный материал содержит материал на основе полиэтилена, выбранный из группы, состоящей из полиэтилена низкой плотности, линейного полиэтилена низкой плотности, полиэтилена высокой плотности ...

Prodn. of foamed thermoplastics - by mixing into polymer in or on discharge from extruder specific non-toxic gases which are not harmful to ozone layer

Polystyrene and/or polyethylene foam or similar foams are produced by processing the polymer in an extruder and/or during discharge and/or after discharge from the extruder mixing foaming agent with it, using only or essentially N2 and/or CO2 and/or H2O and/or N2O as the foaming agent. The extruder die lips are pref. coated with "Teflon" (RTM). The temp. of the mixed material must be lowered to prevent the occluded cells from bursting, the surface must be densified to prevent loss of the gas used, and the foaming agent must be bonded in to the polymer. The cooling is best conducted in an initial air cooling phase followed by water cooling. The foaming agents can be used as liquids. and pumped in metered proportions into the polymer, but feeding in a measured volume of pressurised gas can also be used. The distribution of the gas is aided by the addition of emulsifier, e.g. glycerol monostearate. ADVANTAGE - The method replaces the foaming agents which are harmful to the ozone layer. The ...

One-component rigid polyurethane foam system for aerosol cans - contains isocyanate prepolymer, known additives, volatile propellant and a viscous liq., satd. aliphatic hydrocarbon

One-component systems (I) in pressurised containers, for prodn. of rigid polyurethane (PU) foam, comprise mixts. of (a) NCO gp.-contg. prepolymers obtd. by reaction of polyisocyanates with cpds. of mol.wt. 62-10,000 contg. at least 2 NCO-reactive H atoms, (b) known additives etc., (c) volatile liq. propellants with b.pt. below 0 deg.C/1-13 hPa, and (d) 0.25-2.5 wt.% (w.r.t. a) liq., satd. aliphatic hydrocarbons with dynamic viscosity 110-230 mPa.s at 20 deg.C and density 0.845-0.890 g/m3. Also claimed is rigid PU foam obtd. by hardening system (I) by the action of moisture after it leaves the pressure can. USE/ADVANTAGE - Used (esp. in aerosol cans) for filling applications, e.g. between window frames and walls, holes in walls etc., and fixing, e.g. door frames. Incorporation of (d) prevents the usual change in vol. or thickness due to diffusion processes, changes in temp. and/or humidity sec., and gives 1-component PU foam with improved dimensional stability.

Schäumbare thermoplastische Zusammensetzung, die flüchtige Treibmittel und expandierbare Mikrokugeln enthält

EIN- UND MEHRSCHICHTIGE POLYOLEFIN-SCHAUMSTOFFROHRE

Geschäumtes Fluorpolymer

Heat transfer compositions

A heat transfer composition comprises up to about 30 % by weight carbon dioxide (R-744), from about 30 % to about 80 % by weight difluoromethane (R-32), and 1,3,3,3-tetrafluoropropene (R-1234ze), preferably R-1234ze(E). The composition preferably has a low GWP and may further comprise a lubricant, a stabiliser or a flame retardant. The composition may be a refrigerant, a blowing agent, a foam or a sprayable composition. The composition may be used in a heat transfer device e.g. automotive air conditioning systems, chiller refrigeration systems. Also shown are methods of cooling, heating, extraction and cleaning using the composition.

Fluoropolymer foams,process to make them and applications thereof

Expanded polymer materials

Vertical production of foamed polyurethane slab-stocks

A method and system of making an interior vehicle trim panel having a sprayed expanded polyurethane layer

Interior vehicle trim panel having a sprayed expanded polyurethane layer and method and system of making same

Silicone foams, process to make them and applications thereof

Improvements in or relating to a method of making sponge rubber

Sponge rubber is made by dissolving a water soluble gas, e.g carbon dioxide under pressure in a latex or like composition which is stabilized against coagulation by the gas at atmospheric and elevated pressure, reducing the pressure, conveniently to, but not below, atmospheric pressure, whereupon the latex expands to form a foam, and subsequently coagulating the foam. Examples of suitable pressure for charging the latex with carbon dioxide are from 24 to 100 lb. per sq. in., pressures of 40-50 lb. per sq. in. being entirely satisfactory. In an example a latex composition containing saponin as a stabilizer against coagulation by carbon dioxide and calcium sulphate as a heat sensitizer, was treated with carbon dioxide at about 60 lb. pressure per sq. in. with stirring for 2 1/2 hours. The latex was drawn from the container through a suitable valve open to the atmosphere, whereby the issuing latex expanded to a foam which was poured into moulds and vulcanized in steam at 3 lb. gauge pressure ...

VERFAHREN ZUR HERSTELLUNG HOCHGEFÜLLTER, GESCHÄUMTER POLYMERMATERIALIEN AUF POLYMETHYLMETHACRYLATBASIS

PP FOAM MATERIALS, MANUFACTURING PROCESSES FOR IT AND USES OF IT

FOAMED DUST PROOF MATERIAL AND DUST PROOF ONE, THIS MATERIAL CONTAINING ARRANGEMENT

PROCEDURE FOR THE PRODUCTION BIOLOGICAL OF DEGRADABLE ONES POLYESTER FOAMS, PRESERVATION POLYESTER FOAM FROM THIS AND THEIR USE

FOAMING POLYMER COMPOSITION WITH HIGH PROCESSING TEMPERATURE

WITH KOHLENDIOIXD DRIVEN EXTRUDED POLYLACTIDSCHAUMSTOFFE

Niederdichte, mikrozellulare, geschlossenzellige, thermoplastische Schaumstoffe und ihre Herstellung

Die Erfindung betrifft niederdichte, mikrozellulare, geschlossenzellige, thermoplastische Schaumstoffe und ihre Herstellung. Die Aufgabe bestand darin, Leichtbauteile zur Wärmeisolation mit verbesserten Eigenschaften im Vergleich mit den Marktprodukten zu entwickeln. Die Aufgabe konnte dadurch überraschend gelöst werden, dass Thermoplaste mit leichtflüchtigen Treibgasen bei hohen Treibgasdrücken und bei Raumtemperatur in Druckbehältern gelagert und anschließend in Wasserdampf aufgeschäumt wurden. Nach diesem neuem Verfahren wurden Schaumstoffe mit niedrigen Raumgewichten und sehr kleinen Zelldurchmessern erhalten. Sie hatten ein Aussehen wie Porzellan und zeigten als erwünschte Eigenschaften eine hohe Zug- und Druckfestigkeit sowie eine niedrige Wärmeleitfähigkeit. Auf diese Weise konnten niederdichte, mikrozellare, geschlossenzellige, thermoplastische Schaumstoffe von hoher Festigkeit und Wärmedämmung hergestellt werden.

PROPELLANT FOR PU FOAMS.

VERFAHREN ZUR HERSTELLUNG HOCHGEFÜLLTER, GESCHÄUMTER POLYMERMATERIALIEN AUF POLYMETHYLMETHACRYLATBASIS

BLISTERS OF CONTAINING ÄTHYLEN/ALPHA OLEFIN RUBBER.

PROCEDURE FOR THE PRODUCTION OF FOAMED POLYSTYRENE FOILS.

FOAM MATERIAL MANUFACTURED BY STROMABWÄRTIGE WATER INJECTION

IMPROVED STYRENE RESIN FORM COMPOSITION AND FOAM

CLOSED CELLULAR FOAM WITH LOW DENSITY FROM ETHYLENI POLYMERE ONE

LIQUID CARBON DIOXIDE CONTAINING PROPELLANTS

USING HALOGEN SUITORS PROPELLANT MANUFACTURE FOAM MATERIAL PLATES

USE OF LIQUID CARBON DIOXIDE AS PROPELLANTS WITH THE PRODUCTION OF OPEN-CELLULAR PU SOFT FOAM MATERIAL

PROCEDURE FOR THE PRODUCTION OF A THERMALDUCTILE FOAM MATERIAL FOIL OF MEANS OF A PHYSICAL PROPELLANT

PROCEDURE FOR THE PRODUCTION OF FLEXIBLE OF POLYURETHAN-FOAM MATERIALS

MIKROZELLULARER POLYVINYL CHLORIDE FOAM

THERMOPLASTIC FOAM AND MANUFACTURING PROCESS FOR IT MEANS CARBON DIOXIDE

MIKROZELLULARES FOAM MATERIAL EXTRUDING/CBLAST PIPE PROCEDURE AND THEREBY MANUFACTURED ARTICLE

THERMALDUCTILE POLYPROPYLENE FOAM PLATE

PROCEDURE FOR THE PRODUCTION OF PU SOFT FOAM MATERIALS WITH LOW DENSITY

PROCEDURE FOR THE EXTRUDING OF MOUSSES FROM THERMOPLASTIC POLYMERS

Process for forming polylactide expanded bead foam

Expanded poly(lactide) (PLA) beads are made by pressurizing PLA beads with carbon dioxide at approximately room temperature, heating the beads under pressure to 90 to 160C to saturate and partially crystallize the beads, and then depressurizing and cooling the beads. The PLA beads contain a blend of PLLA and PDLA in certain ratios. The beads are useful for making expanded bead foam.

Method and apparatus for producing biodegradable foam

Manufacture of fully recyclable foamed polymer from recycled material

Compositions containing fluorine substituted olefins

Foamable resin composition and foam

Process and apparatus to foam a water-base adhesive

The invention relates to a process to foam a water-base adhesive wherein a gas is dissolved or generated under pressure in the water phase essentially without the formation of foam. To apply the adhesive in the form of foam, the pressurized adhesive is released through a valve onto a substrate at atmospheric pressure, whereby the dissolved gas separates as gas bubbles. The invention relates further to an apparatus for the implementation of said process comprising a pressure-tight container for the adhesive wherein an overpressure is provided through a first valve, and at the outlet of said container a drain valve is placed. The apparatus further comprises a pressure-tight acid vessel for the acid which is furnished with a second valve at its inlet The outlet of said vessel is connected through a third valve to the container.

Polymeric material for an insulated container

POLYMERIC MATERIAL FOR AN INSULATED CONTAINER A formulation includes a polymeric material, a nucleating agent, a blowing, and a surface active agent. The formulation can be used to form a container.

Light weight articles, composite compositions, and processes for making the same

Provided are composite material comprising hollow glass microspheres and a microcellular thermoplastic resin, articles molded from such materials, and methods of making such materials.

Light weight articles, composite compositions, and processes for making the same

Provided are composite material comprising hollow glass microspheres and a microcellular thermoplastic resin, articles molded from such materials, and methods of making such materials.

Hydrophilic polyurethane gel foams, particularly for treating deep wounds, wound dressing based on hydrophilic polyurethane gel foams and method of manufacture

Comptabilizer for carbon dioxide-blown polyolefinic foams

Bituminous foam

Polypropylene foam

BITUMINOUS FOAM

A method of producing a bituminous foam includes supplying a bitumen in water emulsion from a tank (2) into primary and secondary heating circuits (8, 34), whereby the emulsion is heated (via heating coils 12 and 12') and its pressure raised such that, on discharge to ambient conditions via outlet pipes (30 or 30'), the emulsion foams as water evaporates therefrom.

PROCESS FOR THE PREPARATION OF FLEXIBLE POLYURETHANE FOAMS

Process for the preparation of flexible polyurethane foams comprising the steps of (a) bringing together a polyol component, a polyisocyanate component, a blowing agent comprising liquid carbon dioxide, a suitable catalyst and optionally ancillary chemicals at sufficient pressure to maintain the carbon dioxide in a liquid state, and (b) releasing the pressure and allowing the mixture obtained in step (a) to react into a flexible polyurethane foam, wherein the polyol component comprises a polymer polyol consisting of at least one polyether polyol having an average nominal functionality of at least 2.5 with dispersed therein from 2 to 50 wt% based on total weight of polymer polyol of polymer particles, whereby the particle size of essentially none of these polymer particles exceeds 50 micron.

FOAMING AGENTS AND COMPOSITIONS CONTAINING FLUORINE SUBSTITUTED OLEFINS AND METHODS OF FOAMING

Disclosed are bowing agent compositions, foamable compositions, foams, foaming methods and/or foamed articles comprising one or more C2 to C6 fluoroalkenes, more preferably one or more C3 to C5 fluoroalkenes, and even more preferably one or more compounds having Formula I as follows: XCFzR3-z (I) where X is a C1, C2, C3, C4, or C5 unsaturated, substituted or unsubstituted radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3, it generally being preferred that the fluoroalkene of the present invention has at least four (4) halogen substituents, at least three of which are F and even more preferably none of which are Br.

AMORPHOUS POLYESTER COMPOSITION AND METHOD OF MAKING

An amorphous polyester or copolyester composition comprises the reaction product of a crystalline or semicrystalline polyester or copolyester, optionally derived from a recycled waste stream, at least one diol or aromatic diacid or an ester of a diacid or a hydroxycarboxylic acid or a lactone or a dianhydride, and a catalyst, wherein the amorphous composition has a weight average molecular weight of at least 10,000 g/mol (polystyrene equivalent molecular weight) as measured by gel permeation chromatography.

PROCESS FOR PRODUCING EXTRUDED FOAM PRODUCTS HAVING POLYSTYRENE BLENDS WITH HIGH LEVELS OF CO2 AS A BLOWING AGENT

In one embodiment, the present invention relates to a process for preparing foam board or sheet including the steps of (A) forming a foamable mixture of (1) a major amount of a styrenic polymer having a high melt index, (2) a minor amount of low melt index styrenic polymer, and (3) a blowing agent containing a major amount of carbon dioxide under a pressure sufficient to prevent prefoaming of the mixture, and (B) foaming the mixture into a region of reduced pressure to form a foam product.

FOAMS BASED ON THERMOPLASTIC ELASTOMERS

The present invention relates to particle foams of thermoplastic polyurethane and polyethylene, molded parts produced therefrom, to methods for producing the particle foams and molded parts, and to the use of the molded parts for shoe midsoles, shoe insoles, combined soles, cushioning elements for shoes, bicycle saddles, bicycle tires, damping elements, upholstery, mattresses, supports, handles, protective films, in components in automobile interiors and automobile exteriors, in balls and sport devices or as a floor covering.

HIGHER-STRENGTH ETPU

The present invention relates to an expanded granulate comprising a thermoplastic polyurethane obtainable or obtained by reacting a polyisocyanate composition (IZ), containing at least one aliphatic diisocyanate with a number-average molecular weight of less than 200 g/mol, with at least one chain extender (KV1) and a polyol composition (PZ), and also to a method for producing an expanded granulate of this type. The present invention also relates to the use of an expanded granulate according to the invention for producing a moulded body.

DEVICE AND PROCESS FOR PRODUCING NON-CROSSLINKED POLYPROPYLENE RESIN AND MOULDED FOAMS THEREFROM

The present invention relates to a pellet-type non-crosslinked polypropylene foam having a melting point of 125 to 140.ordm.C, and a process and device for producing said foam. Since the pellet-type foams of non-crosslinked polypropylene of the present invention has a lower melting point and a closed cell content of 80% or more, it is advantageous to mold such foams. The present invention also relates to an article molded from the above pellet-type non-crosslinked polypropylene.foams.

FOAMED, OPACIFYING ELEMENTS AND METHODS OF MAKING

A foamable aqueous composition is used to form foamed, opacifying elements with one or more dry foamed layers. The composition contains: (a) 0.5 to 20 weight % of porous particles comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase. The porous particles have a mode particle size of 2 to 50 ¡.tm; (b) at least 20 weight % of a binder material; (c) 0.1 to 30 weight % of a combination of various additives including dispersants, plasticizers, inorganic or organic pigments and dyes, flame retardants, biocides, fungicides, optical brighteners, tinting colorants, metal flakes, and inorganic or organic fillers; (d) water; and (e) at least 0.001 weight % of an opacifying colorant different from (c). The foamable aqueous composition is suitably aerated, disposed on a porous substrate, dried, and crushed on the porous substrate to form a foamed, opacifying element.

POLYOL COMPONENT FOR THE PRODUCTION OF PUR FOAMS

A composition comprising (a1) a polyether polyol, (a2) a polyolefine polyol and (a3) a polyester polyol obtainable by epoxidation of an unsaturated fatty acid ester and subsequent ring-opening reaction with a compound containing active hydrogen, can be used for the preparation of PUR foam which distinguishes by low-temperature flexibility and low dielectric loss and is suitable for filling the gap between the condenser core and the outer composite or porcelain insulator in the manufacture of resin impregnated paper (RIP) bushings.

POLYMERIC MATERIAL FOR AN INSULATED CONTAINER

A formulation includes a polymeric material, a nucleating agent, a blowing, and a surface active agent. The formulation can be used to form a container.

METHODS FOR MAKING A FOAMED ADHESIVE CONTAINING CLOSED CELLS

Methods for making foamed adhesive compositions suitable for use in adhesive dressings for topical application to the body, the method including providing a molten adhesive composition, combining an inert gas with the molten adhesive composition in a first mixer, mixing the molten adhesive composition comprising the inert gas in the first mixer under conditions effective to form a first foamed adhesive composition; and mixing the first foamed adhesive composition in a second mixer that includes a rotating mixing blade under conditions effective to provide a second foamed adhesive composition having a substantially homogenous distribution of closed cells containing the inert gas.

POLYMERIC NANOFOAM

A polymeric nanofoam has a continuous polymer phase containing at least one (meth)acrylic-free acrylonitrile-containing copolymer and at least one (meth)acrylic polymer where the concentration of (meth)acrylic polymer is in a range of 5-90 weight-percent of the total continuous polymer phase while the amount of methacrylic copolymer is 50 weight-percent or less of the total continuous polymer phase; the polymeric foam having a porosity of at least 50%, an absence of nano-sized nucleating additives and at least one of the following: (a) a number average cell size of 500 nanometers or less; and (b) an effective nucleation site density of at least 1 x 1014 sites per cubic centimeter of prefoamed material. The total weight of copolymerized acrylonitrile is in a range of 3-28 weight-percent based on total continuous polymer phase weight. At least one (meth)acrylic-free acrylonitrile-containing copolymer has a higher glass transition temperature than all of the (meth)acrylic polymers.

METHOD OF MANUFACTURING POLYSTYRENE FOAM WITH POLYMER PROCESSING ADDITIVES

Disclosed is a method for making polystyrene foam which utilizes one or more atmospheric gases, particularly CO2, as the blowing agent in combination with a polymer processing aid (PPA), typically an ester that is relatively non- volatile at the extrusion temperature range. The blowing agent and the PPA may both be introduced into the molten thermoplastic polystyrene resin or the PPA may be incorporated in the solid source polystyrene resins. The resulting foam will be substantially free of residual blowing agent and dimensionally stable at ambient temperatures.

LIGHT WEIGHT ARTICLES, COMPOSITE COMPOSITIONS, AND PROCESSES FOR MAKING THE SAME

Provided are composite material comprising hollow glass microspheres and a microcellular thermoplastic resin, articles molded from such materials, and methods of making such materials.

POLYHEDRAL OLIGOMERIC SILSESQUIOXANE GRAFTED POLYMER IN POLYMERIC FOAM

A polymeric foam article with a polymer matrix defining multiple cells therein has a polymer component with a first polymer that is a polyhedral oligomeric silsesquioxane grafted polymer that has a weight-average molecular weight of two kilograms per mole or higher and 200 kilograms per mole or lower.

DIMENSIONALLY-STABLE POLYPROPYLENE FOAM EXPANDED WITH INORGANIC BLOWING AGENTS

... 2128007 9315132 PCTABS00024 Disclosed is a process for making low density, dimensionally-stable, extruded propylene polymer foam comprised primarily of an expanded propylene polymer material wherein the foam has a blowing agent comprising at least 15 percent by weight of one or more inorganic blowing agents. The foam has a density of from 10 to 150 kilograms per cubic meter, and an average cell wall thickness of less than 35 micrometers. Further disclosed is a foam obtainable from the process.

IMPROVED STYRENIC RESIN MOLDING COMPOSITION AND FOAM

An optionally rubber-reinforced, monovinylidene aromatic polymer resin composition: a) an optionally rubber-reinforced matrix polymer; and b) a plasticizing amount of a solid (at room temperature and pressure), low molecular weight, polymer of limonene or alpha-methylstyrene and, optionally, another copolymerizable vinyl aromatic monomer, having a weight average molecular weight of from 1,000 to 70,000, a volatiles content of up to 30 percent and a glass-transition temperature of at least about 25 .degree.C. The composition surprisingly has improved flow characteristics, and no substantial decrease in toughness and rigidity. The invention further includes a process for producing a closed-cell polymer foam from the composition of the invention, an expandable or foamable monovinylidene aromatic polymer formulation comprising the composition of the invention and a blowing agent, and the resulting polymer foam. Advantageously, the foam of the invention can be produced using only CO2 as a blowing ...

MICROCELLULAR FOAMS CONTAINING AN INFRARED ATTENUATING AGENTAND A METHOD OF USING

Disclosed is an open-cell microcellular foam comprising an alkenyl aromatic polymer foam, the foam being characterized in that the foam has an average cell size of 70 micrometers or less, the foam being evacuated, the foam containing an infrared attenuating agent in a quantity sufficient to reduce the thermal conductivity of the foam relative to a corresponding foam without the infrared attenuating agent. Also disclosed is a closed cell, unevacuated microcellular foam comprising an alkenyl aromatic polymer foam, the foam having an average cell size of 1.0 micrometers or less, the foam being characterized in that it contains an infrared attenuating agent in a quantity sufficient to reduce the thermal conductivity of the foam relative to a corresponding foam without the infrared attenuating agent.

PROCEDURE FOR THE MANUFACTURE OF A FOAMED PLASTIC PRODUCT

Procedure for the manufacture of a foamed plastic product, in which procedur e a filmlike plastic product (1) is perfoamed e.g. by using foaming agents add ed into the manufacturing process, in such a way that lamellar discontinuities (2), e.g. prefoamed bubbles, are created in the product (1). The product (1) is pressurized with a desired gas, such as nitrogen or air, under positive pressure, causing the gas to diffuse into the product. The product (1) is th en inflated by sujecting it to a heat treatment under reduced pressure during which the product is heated at a temperature below its melting point. ...

High-filled, gescheumtes polymer material.

Thermally insulated media tubes with Nb2O5-containing cell gas.

Die Erfindung betrifft ein thermisch gedämmtes Leitungsrohr (1), umfassend mindestens ein starres Mediumrohr (4), mindestens eine um das Mediumrohr herum angeordnete Wärmedämmung (3) und mindestens einen um die Wärmedämmung herum angeordneten Aussenmantel (2), wobei der Aussenmantel (2) gegebenenfalls eine Barriere (9) aus Kunststoff umfasst, und wobei die Wärmedämmung (3) einen Schaumstoff umfasst, dessen Zellgas mindestens 10 Vol.-% HFOs enthält. Ein solches Leitungsrohr zeigt ein gutes Dämmverhalten, eine gute Umweltbilanz und ist einfach herstellbar.

Thermally insulated media tubes with Nb2O5-containing cell gas.

Die Erfindung betrifft ein thermisch gedämmtes Leitungsrohr (1), umfassend mindestens ein Mediumrohr (4), mindestens eine um das Mediumrohr herum angeordnete Wärmedämmung (3) und mindestens einen um die Wärmedämmung herum angeordneten Aussenmantel (2), wobei der Aussenmantel (2) gegebenenfalls eine Barriere (9) aus Kunststoff umfasst, und wobei die Wärmedämmung (3) einen Schaumstoff umfasst, dessen Zellgas mindestens 10 vol% HFOs enthält. Ein solches Leitungsrohr zeigt ein gutes Dämmverhalten, eine gute Umweltbilanz und ist einfach herstellbar.

Verfahren zur Herstellung einer formgeschäumten Schuhkomponente.

Es wird ein Verfahren zur Herstellung einer formgeschäumten Schuhkomponente, insbesondere eine Laufschuhkomponente, offenbart umfassend die Schritte: a. Bereitstellen eines Polymergranulates; b. Vorbehandlung des Polymergranulats umfassend das Binden eines ersten physikalischen Treibmittels an oder im Polymergranulat bei einem ersten Druck und einer ersten Temperatur; c. Formschäumen des vorbehandelten Polymergranulats in einem Formschäumungssystem, wobei das Formschäumungssystem umfasst: i. eine Trommel mit einer Trommelzuleitung, wobei die Trommel einen Verarbeitungsraum mit einer darin angeordneten Schraube definiert; ii. eine Treibmittelzufuhr in fluidischer Verbindung mit dem Verarbeitungsraum; iii. eine mit dem Verarbeitungsraum in fluidischer Verbindung stehende Düse; und iv. eine Form mit einem Formhohlraum, welcher in fluidischer Verbindung mit der Düse steht. Das Formschäumen umfasst dabei: Das Einbringen eines zweiten physikalischen Treibmittels mittels der Treibmittelzufuhr ...

Vefahren zur Herstellung einer formgeschäumten Schuhkomponente mittels Vorbehandlung in einem Autoklav.

Verfahren zur Herstellung einer formgeschäumten Schuhkomponente, umfassend die Schritte: a. Bereitstellen einer Polymerzusammensetzung; b. Vorbehandlung der Polymerzusammensetzung umfassend das Binden eines physikalischen Treibmittels an oder in der Polymerzusammensetzung in einem Autoklav bei einem ersten Druck und einer ersten Temperatur; Schäumen der vorbehandelten Polymerzusammensetzung umfassend das Schmelzen der Polymerzusammensetzung zur Herstellung einer geschmolzenen Polymerzusammensetzung und Schäumen der geschmolzenen Polymerzusammensetzung durch Expansion des physikalischen Treibmittels.

ПОЛИПРОПИЛЕНОВЫЙ ПЕНОПЛАСТ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Настоящее изобретение относится к пенопласту, включающему полипропилен, полученный в присутствии металлоценового катализатора и имеющий следующие показатели: а) показатель разветвленности g' меньше, чем 1,00 и б) показатель деформационного упрочнения (SHI@1 ск-1) не менее 0,30, измеренный со скоростью деформации dε/dt, равной 1,00 с-1, при температуре 180°C, и определенный как угол наклона десятичного логарифма функции роста напряжения при растяжении (lg(ηε+)) как функции десятичного логарифма остаточной деформации по Генки (lg(ε)), в диапазоне остаточной деформации по Генки между 1 и 3.

POLYPROPYLENE FOAM PLASTIC

SYSTEM AND METOD FOR PRODUCING AN IN-SITU PER FOAM

PROFILING ARTICLE, COMPOSITE COMPOUNDS AND PROCESSES OF THEIR MANUFACTURING

METHOD OF FORMING SHOE SOLE FROM A VULCANIZED FOAM RUBBER AND CORRESPONDING SHOE SOLE FROM A VULCANIZED FOAM RUBBER

FOAMING POLYSTYRENE AND METHODS OF ITS FORMATION

Polyolefin resin foamed particle and foamed particle shaped body and with the molded body of the composite laminate

Polyvinylidene fluoride resin expanded beads, and molded articles of polyvinylidene fluoride resin expanded beads

Foamed blow-molded article and foamed blow-molding method

Bubble-contg. ethylene/alpha-olefin rubber

Thermoplastic polyurethane foaming bead particle and preparation method thereof

Method for producing a polyamide block copolymer foam with polyether blocks

Polyolefin-based resin pre-expanded particles and polyolefin-based resin in-mold expansion molded article comprising polyolefin-based resin pre-expanded particles

Polyolefin-based resin pre-expanded particles include a polyolefin-based resin composition including a polyolefin-based resin, a sterically hindered amine ether flame retardant expressed by the general formula (1): R 1 NHCH 2 CH 2 CH 2 NR 2 CH 2 CH 2 NR 3 CH 2 CH 2 CH 2 NHR 4 (1), and a phosphoric ester. The polyolefin-based resin pre-expanded particles are flame retardant polyolefin-based resin pre-expanded particles that can have good in-mold expansion moldability and exhibit excellent flame resistance compared to the conventional pre-expanded particles even when molded into a sample having a higher density or a larger thickness without using a halogen flame retardant, and that do not generate harmful gas during burning.

Heat transfer compositions

The invention provides a heat transfer composition comprising (i) a first component selected from trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z)) and mixtures thereof; (ii) carbon dioxide (R-744); and (iii) a third component selected from 2,3,3,3-tetrafluoropropene (R-1234yf), 3,3,3-trifluoropropene (R-1243zf), and mixtures thereof.

Polymer Composite Foams

Foamed polymeric compositions containing clay nucleating agents are described. The clays are preferably sepioiite, palygorskite/attapulgite, or combinations thereof. Also described are processes for forming the foamed compositions. The resulting products find particular application as insulation and packaging materials.

METHOD FOR PRODUCING EXTRUDED POLYSTYRENE RESIN HEAT-INSULATING FOAM BOARD

A method for producing an extruded heat-insulating foam board having a thickness of 10 to 150 mm, an apparent density of 20 to 50 kg/mand a closed cell content of at least 80% by extrusion foaming of a foamable resin melt containing a base resin composed primarily of a polystyrene resin, a physical blowing agent and a flame retardant, wherein 3 to 50 mol % of a hydrofluoroolefin, 30 to 70 mol % of a saturated hydrocarbon having 3 to 5 carbon atoms, and 5 to 50 mol % of water and/or carbon dioxide (where the sum of the contents of the hydrofluoroolefin, saturated hydrocarbon having 3 to 5 carbon atoms, water and/or carbon dioxide is 100 mol %) are used as the physical blowing agent. The extruded polystyrene resin heat-insulating foam board is produced with good extrusion foamability and moldability and has a high expansion ratio, a large thickness, excellent long-term heat-insulating properties and flame retardancy, and good appearance. 1. A method for producing an extruded heat-insulating foam board having a thickness of 10 to 150 mm , an apparent density of 20 to 50 kg/mand a closed cell content of at least 80% , comprising extruding a foamable resin melt containing a base resin composed primarily of a polystyrene resin , a physical blowing agent and a flame retardant , wherein 3 to 50 mol % of a hydrofluoroolefin , 30 to 70 mol % of a saturated hydrocarbon having 3 to 5 carbon atoms , and 5 to 50 mol % of water and/or carbon dioxide (where the sum of the contents of the hydrofluoroolefin , saturated hydrocarbon having 3 to 5 carbon atoms , water and/or carbon dioxide is 100 mol %) are used as the physical blowing agent.2. The method for producing an extruded polystyrene resin heat-insulating foam board according to claim 1 , wherein the sum of the amounts of the hydrofluoroolefin and the saturated hydrocarbon having 3 to 5 carbon atoms is 0.4 to 2 moles per 1 kg of the base resin claim 1 , and the sum of the amounts of the water and/or carbon dioxide is 0.05 to 0. ...

CONTINUOUS METHOD FOR PRODUCING SOLID, HOLLOW OR OPEN PROFILES

Disclosed herein is a method for producing a polystyrene foam. The polystyrene is dosed with a gas and the polystyrene and gas are mixed in an extruder in order to obtain a homogenous mixture. The homogeneous mixture is cooled as it travels through the extruder and is then extruded from the die at a pressure of less than 7 MPa to form a foam with a smooth skin. 1. A method for producing solid , hollow or open profiles , based on polystyrene , comprising:dosing polymers comprising polystyrene,plasticizing the components in an extruder in order to obtain a homogenous mixture,injecting a pressurized gas via an injection port in an amount from 0.2 to 0.4% by weight based on the polymers comprising polystyrene,kneading and pressurizing said homogeneous mixture and gas until complete dissolution of the gas in order to obtain a mixture in a single phase,gradually cooling said mixture while maintaining the pressure required for solubilizing the gas, to a temperature above 135° C.,having said mixture in a single phase, pass from a die into ambient conditions to form a foam, where the mixture passes onto the die at a rate of 50 to 120 kilograms of polystyrene per hour; and where the pressure at the shaping tool is 3 MPa to 7 MPa; anddrawing the calibrated foam with a motor to produce a foam having a density of 290 to 350 kilograms per cubic meter and having a cell size of 25 to 100 micrometers.2. The method according to claim 1 , wherein the gradual cooling is controlled so as to provide a homogeneous temperature profile in a cross-section perpendicular to the flow claim 1 , until the optimum foaming temperature is obtained.3. The method according to claim 1 , wherein the polymer is selected from the group consisting of polystyrene claim 1 , acrylonitrile-butadiene-styrene (ABS) claim 1 , styrene-butadiene-styrene (SBS) claim 1 , styrene-ethylene-butadiene-styrene (SEBS) and mixtures thereof.4. The method according to claim 1 , wherein several kinds of polystyrenes which ...

Method of forming polymeric foam and related foam articles

Methods of forming polymeric foams are provided. The methods may involve co-extruding a foam layer along with one or more skin layers. In some embodiments, the skin layer(s) may be removed (e.g., in a peeling operation); while, in other embodiments, the skin layer(s) may form part of the final article. The methods are particularly well suited for producing polymeric foams from polymeric materials that are considered to be difficult to foam by those of skill in the art.

Resin foam and process for producing the same

Provided is a resin foam which has satisfactory strain recovery, is particularly resistant to shrinkage of its cell structure caused by the resinous restitutive force at high temperatures, and exhibits superior high-temperature strain recovery. The resin foam according to the present invention is obtained from a resin composition including an elastomer and an active-energy-ray-curable compound. The resin composition gives an unfoamed measurement sample having a glass transition temperature of 30° C. or lower and a storage elastic modulus (E′) at 20° C. of 1.0×10 7 Pa or more, each determined by a dynamic viscoelastic measurement.

Foam waterproofing material with a micro cell structure

To be provided is a foam waterproofing material superior in waterproofness and flexible enough to be compatible with further minute clearance. The foam waterproofing material according to the present invention is a waterproofing material including a foam having a thickness of 0.1 to 1.0 mm, characterized in that the foam has a micro cell structure with an average cell diameter of 10 to 60 μm and an apparent density of 0.01 to 0.060 g/cm 3 . In the foam waterproofing material, the repulsive load when compressed to 0.1 mm (0.1 mm-compressive repulsion force) of the foam is preferably 0.01 to 0.1 MPa. The foam preferably has a closed-cell structure or a semi-open- and semi-closed-cell structure. In addition, the foam may have a pressure-sensitive adhesive layer on one or both faces thereof. The pressure-sensitive adhesive layer is preferably formed on the foam via a film layer.

POLYURETHANE FOAM AND METHOD FOR PRODUCING SAME

A polyurethane foam is obtainable from the reaction of a mixture comprising A) an isocyanate-reactive compound; B) a blowing agent selected from the group comprising linear, branched or cyclic C-Chydrocarbons, linear, branched or cyclic C-C(hydro)fluorocarbons, N, O, argon and/or CO, wherein said blowing agent B) is in the supercritical or near-critical state; and C) a polyisocyanate. 115-. (canceled)16. A polyurethane foam obtained from the reaction of a mixture comprising:A) an isocyanate-reactive compound;{'sub': 1', '6', '1', '6', '2', '2', '2, 'B) a blowing agent selected from the group consisting of a linear, a branched or a cyclic C-Chydrocarbon, a linear, a branched or a cyclic C-C(hydro)fluorocarbon, N, O, argon and/or CO, wherein said blowing agent B) is in the supercritical or near-critical state; and'}C) a polyisocyanate;wherein said isocyanate-active compound A) comprises a hydrophobic portion and a hydrophilic portion and has an average hydroxyl functionality of more than 1,wherein the hydrophobic portion comprises a saturated or unsaturated hydrocarbonaceous chain having 6 or more carbon atoms, andwherein the hydrophilic portion comprises alkylene oxide units and/or ester units.17. The polyurethane foam as claimed in wherein the isocyanate-reactive compound has an average hydroxyl functionality of ≧1.5 to ≦5.18. The polyurethane foam as claimed in wherein said isocyanate-reactive compound A) has a hydroxyl number of ≧50 mg KOH/g to ≦500 mg KOH/g.19. The polyurethane foam as claimed in wherein the proportion of said isocyanate-reactive compound A) is ≧0.5% by weight to ≦40% by weight claim 16 , based on the overall weight of the mixture.20. The polyurethane foam as claimed in wherein the hydrophilic portion of said isocyanate-reactive compound A) comprises an intro-esterified fatty acid and the proportion of the intro-esterified fatty acid is ≧0.5% by weight to ≦25% by weight claim 16 , based on the overall weight of the mixture.21. The polyurethane ...

POLYURETHANE FOAM AND METHOD FOR PRODUCING SAME

The invention relates to a method for producing a polyurethane foam, wherein a mixture having the following is discharged from a mixing head through a discharge line: A) a component reactive toward isocyanates; B) a surfactant component; C) a blowing agent component selected from the group comprising linear, branched, or cyclic C1 to C6 hydrocarbons, linear, branched, or cyclic C1 to C6 fluorocarbons, N2, O2, argon, and/or CO2, wherein the blowing agent C) is present in the supercritical or near-critical state; and D) a polyisocyanate component. The component A) has a hydroxyl value=100 mg KOH/g and =1000 mg KOH/g. The blowing agent component C) is present at least partially in the form of an emulsion, and means provided with an opening or several openings are arranged in the discharge line in order to increase the flow resistance during the discharge of the mixture comprising A), B), C), and D), wherein the cross-sectional area of the opening or the sum of the cross-sectional areas of all openings is =0.1% and =99.9% of the inner cross-sectional area of the discharge line. 1. A method of producing a polyurethane foam comprising the steps of: A) an isocyanate-reactive component;', 'B) a surfactant component;', {'sub': 1', '6', '1', '6', '2', '2', '2, 'C) a blowing agent component selected from the group consisting of a linear, a branched or a cyclic Cto Chydrocarbon, a linear, a branched or a cyclic Cto C(hydro)fluorocarbon, N, O, argon, and CO, wherein said blowing agent C) is in the supercritical or near-critical state; and'}, 'D) a polyisocyanate component;, 'providing a mixture in a mixing head, said mixture comprising wherein said isocyanate-reactive component A) has a hydroxyl number of ≧100 mg KOH/g to ≦1000 mg KOH/g,', 'said blowing agent component C) is at least partly present in the form of an emulsion, and, 'discharging the mixture comprising A), B), C) and D) from the mixing head through a discharge line,'}means having one or more apertures are disposed ...

Propylene-based copolymer, propylene-based copolymer composition, molded product thereof and foamed product thereof, and production process therefor

To provide a propylene-based copolymer and a propylene-based copolymer composition, each of which has a high melt tension because it has a long-chain branched structure, exhibits excellent molding processability during molding, such as inflation molding, extrusion molding, blow molding, injection molding or vacuum forming, and is capable of favorably providing a foamed product having an excellent expansion ratio and excellent cell uniformity in the foaming stage. The propylene-based copolymer (A) of the present invention comprises 50 to 95% by mol of constituent units [i] derived from propylene, 4.9 to 49.9% by mol of constituent units [ii] derived from an α-olefin of 2 to 10 carbon atoms other than propylene and 0.1 to 10% by mol of constituent units [iii] derived from a non-conjugated polyene (with the proviso that the total amount of the constituent units [i], [ii] and [iii] is 100% by mol), and is characterized by satisfying specific requirements (a) and (c).

Polymeric material for an insulated container

A formulation includes a polymeric material, a nucleating agent, a blowing agent, and a surface active agent. The formulation can be used to form a container.

Low Pressure Process for Frothing Polyurethane or Polyisocyanurate

A process of making a polyurethane or polyisocyanurate foam comprises the step of mixing under low pressure: (A) An isocyanate; (B) A compound reactive with the isocyanate, e.g., a polyol; (C) A liquid blowing agent; and (D) Carbon dioxide. 1. A process of making a polyurethane or polyisocyanurate foam , the process comprising the step of mixing under a low pressure of from 0.7 to 2.1 MPa:(A) An isocyanate;(B) A compound reactive with the isocyanate;(C) A liquid blowing agent; and(D) Gaseous carbon dioxide.2. (canceled)3. (canceled)4. The process of in which the compound reactive with the isocyanate is a polyol.5. The process of in which the liquid blowing agent is a hydrocarbon blowing agent.6. The process of in which the gaseous carbon dioxide is first mixed with each of components (A) and (B) before components (A) and (B) are mixed with one another.7. The process of in which all of the components are mixed with one another simultaneously.8. The process of in which the components are mixed within a low pressure impingement mixer.9. The process of in which the components are mixed without a static mixer.10. The process of in which the weight ratio of gaseous carbon dioxide to the liquid blowing agent is from 60:40 to 40:60.11. The process of in which the liquid blowing agent is a hydrocarbon blowing agent. This invention relates to a process of frothing polyurethane (PUR) or polyisocyanurate (PIR) using low pressure equipment. In one aspect the invention is a low-pressure process of frothing polyurethane or polyisocyanurate using a non-hydrocarbon, low global warming potential (GWP) blowing agent while in another aspect, the invention relates to such a process in which gaseous carbon dioxide is used as a frothing agent.Polyurethane (PUR) and polyisocyanurate (PIR) foams are typically made from two component systems in which one component comprises an isocyanate and the other component comprises a polyol and/or other material reactive with the isocyanate. The two ...

Composition For Preparing A Polymeric Foam

The present invention relates to composition for the preparation of a polymeric foam with improved thermal properties, to a polymeric foam obtainable therefrom, and to a method for preparing such a polymeric foam each for them comprising (i) an at least essentially amorphous polymer resin and (ii) a nucleating agent. The at least essentially amorphous polymer resin is preferably polystyrene. The nucleating agent is preferably selected from the group consisting of 1,3:2,4-bis-(benzylidene)-sorbitol derivates and mixtures thereof, and is preferably 1,3:2,4-bis-O-(4-methylbenzylidene)-D-sorbitol, 1,3:2,4-bis-(3,4-Dimethylbenzylidene)-sorbitol and 1,3:2,4-bis-(4-propylbenzylidene)-propyl sorbitol. 112.-. (canceled)15. (canceled) The present invention relates to compositions for the preparation of a polymeric foam with improved thermal properties, and to a foamed polymeric article obtainable therefrom, and to a method for preparing such a polymeric foam or article.In response to environmental concerns, there has been an evolution from using hydrochlorofluorocarbon (HCFC) foam blowing agents to using carbon dioxide and/or hydrocarbons and alcohols. Unfortunately, as a result of this change, the thermal conductivity of foam materials has increased due to the higher conductivity of these new blowing agents. This results in insulation foams that no longer fulfill the required product specifications unless additional steps are taken to increase the thermal resistance of these insulation foams.It is known that an infrared attenuation agent (IAA) can be used to improve an insulation foam. An effective infrared attenuation agent favors increased reflection and absorption and decreased transmission of heat radiation as much as possible. Traditionally, inorganic materials have been used as IAA to reduce the portion of heat radiation. This includes, for example, graphite, aluminum, stainless steel, cobalt, nickel, carbon black, and titanium dioxide. As an example for several ...

Nanocellular foam with solid flame retardant

Prepare nanofoam by (a) providing an aqueous solution of a flame retardant dissolved in an aqueous solvent, wherein the flame retardant is a solid at 23° C. and 101 kiloPascals pressure when in neat form; (b) providing a fluid polymer composition selected from a solution of polymer dissolved in a water-miscible solvent or a latex of polymer particles in a continuous aqueous phase; (c) mixing the aqueous solution of flame retardant with the fluid polymer composition to form a mixture; (d) removing water and, if present, solvent from the mixture to produce a polymeric composition having less than 74 weight-percent flame retardant based on total polymeric composition weight; (e) compound the polymeric composition with a matrix polymer to form a matrix polymer composition; and (f) foam the matrix polymer composition into nanofoam having a porosity of at least 60 percent.

Polymer foam and preparation method thereof

The present disclosure relates to a polymer foam and a preparation method thereof. The polymer foam is obtained by physically foaming a thermoplastic elastomer or a polyolefin material, and has an apparent density of 0.30 g/cm3 or less and a rebound degree of 50% or more as measured according to ASTM D2632.

METHOD FOR PHYSICALLY FOAMING A POLYMER MATERIAL AND FOAMED ARTICLE

The present disclosure relates to a method for physically foaming a polymer material and a foamed article. The method for physically foaming a polymer material comprises: (1) making a thermoplastic elastomer or a polyolefin material into a blank with an injector, an extruder, or a molding press; (2) subjecting the polyolefin blank to a crosslinking reaction to obtain a crosslinked polyolefin blank; (3) subjecting the thermoplastic elastomer blank or the crosslinked polyolefin blank to a high pressure impregnation with a supercritical fluid in an autoclave, then releasing the pressure to a normal pressure to obtain a supercritical fluid-impregnated blank; and (4) placing the supercritical fluid-impregnated blank into an end-product mold to perform an 1:1 in-mold foaming to obtain a finished foam article. 1. A method for physically foaming a polymer material , comprising:(1) making a thermoplastic elastomer or a polyolefin material into a thermoplastic elastomer blank or a polyolefin blank with an injector, an extruder, or a molding press;(2) subjecting the polyolefin blank to a crosslinking reaction to obtain a crosslinked polyolefin blank;(3) subjecting the thermoplastic elastomer blank or the crosslinked polyolefin blank to a high pressure impregnation with a supercritical fluid at a pressure of 10-50 MPa in an autoclave, then releasing the pressure to a normal pressure to obtain a supercritical fluid-impregnated blank; and(4) placing the supercritical fluid-impregnated blank into an end-product mold to perform an 1:1 in-mold foaming to obtain a finished foam article.2. The method according to claim 1 , wherein claim 1 , the thermoplastic elastomer comprises at least one of a thermoplastic polyurethane (TPU) claim 1 , a thermoplastic polyester elastomer (TPEE) claim 1 , and a polyether block amide elastomer (Pebax) claim 1 , or a mixture thereof.3. The method according to claim 1 , wherein claim 1 , the polyolefin material comprises at least one of poly(ethylene-co ...

COMPOSITIONS AND METHODS FOR FOAM STIMULATION

Disclosed are foam precursor compositions, foamed compositions, and methods of using these foamed compositions for the stimulation of unconventional reservoirs. 1. A method for stimulating an unconventional subterranean formation comprising:(a) providing an existing wellbore in fluid communication with an unconventional subterranean formation, wherein the existing wellbore has a pressure that is less than original reservoir pressure;(b) injecting a foamed composition through the existing wellbore into the unconventional subterranean formation, the foamed composition comprising a surfactant package comprising a primary foaming surfactant and optionally one or more secondary surfactants, wherein the foamed composition is injected at a pressure and flowrate effective to increase the existing wellbore pressure;(c) allowing the foamed composition to contact a rock matrix of the unconventional subterranean formation for a period of time; and(d) producing fluids from the unconventional subterranean formation through the wellbore.2. The method of claim 1 , wherein step (b) comprises injecting the foamed composition at a pressure and flowrate effective to:increase the existing wellbore pressure by at least 30%;increase the existing wellbore pressure to from greater than the original reservoir pressure to 150% of the original reservoir pressure;increase the existing wellbore pressure without refracturing the existing wellbore; orany combination thereof.3. The method of claim 1 , wherein step (b) comprises:combining a foam precursor solution with an expansion gas to form the foamed composition above ground, and injecting the foamed composition through the existing wellbore into the unconventional subterranean formation; orcombining a foam precursor solution with an expansion gas downhole to form the foamed composition in situ within the existing wellbore.4. The method of claim 1 , wherein the period of time in step (c) comprises a period of time effective to allow the foamed ...

APPARATUS FOR DISPERSING A GAS, FOR EXAMPLE CARBON DIOXIDE, IN AT LEAST ONE REACTIVE RESIN

The invention concerns an apparatus () for the dispersion of an expansion gas even in supercritical conditions, e.g. carbon dioxide, in a reactive resin, of the kind in which a reaction chamber having an input () for gas and an input () for resin is provided. Advantageously, the chamber is a dispersion and containment chamber made into a casing () of predetermined high resistance susceptible to sustain high pressure and is divided into two sections () by a head () of a dispersion and mixing cylinder-piston group () in fluid communication between themselves by means of at least one pouring passage () provided with a static mixer (), motor means () being provided for piston () control of said mixing cylinder-piston group (). The invention also concerns a process for the formation of a polyurethane foam starting with the dispersion of carbon dioxide, even supercritical, in a reactive resin in which at least one initial dispersion and mixing controlled phase of the two components is provided in a dispersion and containment chamber under pressure divided into two sections () by a head () of a cylinder-piston mixing group () in fluid communication between themselves by means of at least one pouring passage () provided with a static mixer () and in which adduction, dispersion and mixing occurs under high pressure (at least greater than 75 bar). 1. Apparatus for the dispersion and mixing of an expansion gas , e.g. carbon dioxide , in a reactive resin , comprising:a mixing chamber having a supply input for the gas and a supply input for the resin is provided and comprising:said chamber being a dispersion and containment chamber made in a casing of predetermined high resistance susceptible to sustain high pressure;said chamber being divided into two sections by a head of a dispersion and mixing cylinder-piston group, said two sections being in fluid communication between themselves by means of at least one pouring passage;a static mixer in said pouring passage;a motor for ...

FOAMS AND METHOD OF FORMING FOAMS OF IONOMERS OF COPOLYMERS OF VINYLIDENE AROMATIC MONOMER AND UNSATURATED COMPOUNDS WITH ACID GROUPS

A foaming composition useful to make an extruded foam is comprised of comprising a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and one or more blowing agents. The foaming composition may be made into a foam by heating the foaming composition to a temperature sufficient to melt and ionically crosslink said copolymer which is then extruded through a die forming a foam. The foam is comprised of an ionically crosslinked aforementioned copolymer, wherein the copolymer is crosslinked through ionic bonds between the unsaturated acids and the metal of the metal salt or metal oxide. 1. A foaming composition comprising:(a) a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer;(b) a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and,(c) one or more blowing agents.2. The foaming composition of wherein the foaming composition is an admixture of each of (a) claim 1 , (b) and (c).3. The foaming composition of claim 1 , wherein the foaming composition are separate parts that are brought into contact when forming a foam.4. The foaming composition according to claim 1 , wherein the metal is one or more of transition metals claim 1 , post transition metals claim 1 , metalloids or an alkaline earth metals.5. The foaming composition according to claim 1 , wherein the metal is one or more of zinc claim 1 , zirconium claim 1 , aluminum claim 1 , magnesium and calcium.6. The foaming composition according to claim 1 , ...

FOAMS AND METHODS OF FORMING FOAMS OF CHAIN EXTENDED/BRANCHED COPOLYMERS OF VINYLIDENE SUBSTITUTED AROMATIC MONOMERS

A foaming composition useful to make an extruded foam is comprised of: a copolymer of a vinylidene aromatic monomer and an unsaturated compound containing nucleophilic groups, a copolymer of vinylidene aromatic monomer and an unsaturated compound having electrophilic groups; and a blowing agent. The foaming composition may be made into a foam by heating the foaming composition to a temperature sufficient to melt and react said copolymers to form a chain extended/branched copolymer and extruding the foaming composition from a higher pressure to a lower pressure to form an extruded foam comprised of the chain extended/branched copolymer. The foam is comprised of a chain extended/branched copolymer that is the reaction product of (i) a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated compounds containing nucleophilic groups, and (ii) a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated compounds having electrophilic groups. 1. A foaming composition comprising:(a) one or more copolymers of one or more vinylidene aromatic monomers and one or more unsaturated compounds containing nucleophilic groups, the copolymer having on average 0.02 to about 3.0 percent by weight of nucleophilic groups pendant from the copolymer;(b) one or more copolymers of one or more vinylidene aromatic monomers and one or more unsaturated compounds having electrophilic groups; and(c) one or more blowing agents.2. The foaming composition according to wherein the one or more copolymers of one or more vinylidene aromatic monomers and one or more unsaturated compounds having pendant electrophilic groups is present in an amount of 0.1 to about 0.5 percent by weight of the foaming composition.3. The foaming composition according to wherein the nucleophilic groups are carboxylic acid claim 1 , alcohol claim 1 , phenol claim 1 , amine claim 1 , aniline claim 1 , imidazole claim 1 , tetrazole claim 1 , thiol claim 1 , boronic acid claim 1 , ...

FOAMING AGENTS AND COMPOSITIONS CONTAINING FLUORINE SUBSTITUTED OLEFINS, AND METHODS OF FOAMING

Various uses of fluoroalkenes, including tetrafluoropropenes, particularly (HFO-1336) in a variety of applications, including as blowing agents for integral skin foams are disclosed. 1. A method of forming an integral skin thermoset foam comprising: {'br': None, 'XCFzR3-z \u2003\u2003(I)'}, 'providing a polymer foam formulation comprising a blowing agent composition comprising from about 5% by weight to about 95% by weight of a C4 fluoroalkene according to Formula Iwhere X is a C3 unsaturated, substituted radical having at least one fluorine substituent and z is 3; andfoaming said polymer foam formulation to form an integral skin foam.2. The method of wherein said foam comprises a polyurethane foam.3. The method of wherein said blowing agent further comprises a hydrofluorocarbon selected from the group consisting of difluoromethane (HFC32); 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,1-pentafluoroethane (HFC125); 1 claim 1 ,1 claim 1 ,1-trifluoroethane (HFC143a); 1 claim 1 ,1 claim 1 ,2 claim 1 ,2tetrafluorothane (HFC134); 1 claim 1 ,1 claim 1 ,1 claim 1 ,2-tetrafluoroethane (HFC134a); 1 claim 1 ,1-difluoroethane (HFC152a); 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3 claim 1 ,3 claim 1 ,3-heptafluoropropane (HFC227ea); 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3pentatfluoropropane (HFC245fa); 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentafluorobutane (HFC365mfc).4. The method of wherein said hydrofluorocarbon comprises 1 claim 3 ,1 claim 3 ,1 claim 3 ,2 claim 3 ,2 claim 3 ,3 claim 3 ,4 claim 3 ,5 claim 3 ,5 claim 3 ,5-decafluoropentane (HFC4310mee).5. The method of wherein said blowing agent further comprises an additive selected from the group consisting of hydrocarbons claim 1 , C1 to C5 alcohols claim 1 , C1 to C4 aldehydes claim 1 , C1 to C4 ketones claim 1 , C1 to C4 ethers claim 1 , carbon dioxide claim 1 , and C1 to C4 diethers.6. The method of wherein said hydrocarbon is selected from the group consisting of pentane isomers and butane isomers.7. A ...

METHODS OF MANUFACTURING EXTRUDED POLYSTYRENE FOAMS USING CARBON DIOXIDE AS A MAJOR BLOWING AGENT

A composition and method for making extruded polystyrene (XPS) foam is provided. The composition includes carbon dioxide as a major blowing agent to achieve an XPS foam having an improved thermal insulation performance. 1. A foamable polymeric mixture comprising:a polymer composition;a blowing agent composition, the blowing agent composition comprising carbon dioxide and at least one co-blowing agent; andat least one infrared attenuating agent.2. The foamable polymeric mixture of claim 1 , wherein the blowing agent composition comprises at least 50 molar percent carbon dioxide.3. The foamable polymeric mixture of claim 1 , wherein the at least one co-blowing agent is selected from hydrofluoroolefins claim 1 , hydrofluorocarbons claim 1 , Formacel FEA-110 claim 1 , and mixtures thereof.4. The foamable polymeric mixture of claim 3 , wherein the at least one co-blowing agent is selected from HFC-134a claim 3 , HFC-134 claim 3 , HFC-152a claim 3 , HFO-1234ze claim 3 , HFO-1233zd claim 3 , and FEA-1100.5. The foamable polymeric mixture of claim 4 , wherein the at least one co-blowing agent is selected from HFC-134a claim 4 , HFO-1234ze claim 4 , HFO-1243zf claim 4 , and FEA-1100.6. The foamable polymeric mixture of claim 1 , wherein the at least one infrared attenuating agent comprises from about 0% to about 1% by weight of the total solids.7. The foamable polymeric mixture of claim 1 , wherein the at least one infrared attenuating agent comprises nano-graphite.8. The foamable polymer mixture of claim 1 , wherein the polymer composition comprises polystyrene.9. The foamable polymer mixture of claim 1 , wherein the blowing agent composition comprises at least 50 molar percent carbon dioxide and less than 50 molar percent FEA-1100.10. A method of manufacturing extruded polymeric foam comprising:introducing a polymer composition into a screw extruder to form a polymeric melt;injecting a blowing agent composition into the polymeric melt to form a foamable polymeric material, ...

Method for manufacturing foamed polypropylene-resin particles

Foamed polypropylene-resin particles are obtained by dispersing polypropylene-resin particles containing polyethylene glycol and/or glycerin together with an aqueous dispersion medium in a pressure-resistant container; introducing carbon dioxide gas as a foaming agent into the pressure-resistant container; impregnating the polypropylene-resin particles with the foaming agent under a heating and pressure condition; and then discharging the polypropylene-resin particles into an area having a lower pressure than an internal pressure of the pressure-resistant container and having an atmosphere temperature of higher than 80° C. and not higher than 110° C. The foamed polypropylene-resin particles can yield an in-mold foam molded body at a low heated water vapor pressure for molding, do not lose moldability at a high heated water vapor pressure for molding, have a wide heated water vapor range for molding, exhibit good moldability even when a mold with a complicated shape, a large mold, or a similar mold is used.

Foamed Articles Exhibiting Improved Thermal Properties

Cellular and multi-cellular polystyrene and polystyrenic foams and methods of forming such foams are disclosed. The foams include an expanded polystyrene formed from expansion of an expandable polystyrene including an adsorbent comprising alumina, wherein the multi-cellular polystyrene exhibits a multi-cellular size distribution. The process for forming a foamed article includes providing a formed styrenic polymer and contacting the formed styrenic polymer with a first blowing agent and an adsorbent comprising alumina to form extrusion polystyrene. The process further includes forming the extrusion styrenic polymer into an expanded styrenic polymer and forming the expanded styrenic polymer into a foamed article. 1. Multi-cellular polystyrene comprising:expanded polystyrene formed from expansion of a blend comprising an expandable polystyrene, a blowing agent, and an adsorbent comprising alumina that is dry when added to the blend, wherein the multi-cellular polystyrene exhibits a multi-cellular size distribution.2. The multi-cellular polystyrene of claim 1 , wherein the expandable polystyrene comprises a reflective additive.3. The multi-cellular polystyrene of claim 1 , wherein the multi-cellular polystyrene is bi-cellular and comprises small cells and large cells.4. The multi-cellular polystyrene of claim 3 , wherein the small cells comprise approximately 90% of the total of the small cells and the large cells.5. The multi-cellular polystyrene of claim 3 , wherein the multi-cellular polystyrene comprises struts and cell walls claim 3 , and wherein the alumina is dispersed within the struts and cell walls.6. The multi-cellular polystyrene of claim 3 , wherein the large cells have an average cellular size of from about 150 to about 900 microns.7. The multi-cellular polystyrene of claim 6 , wherein the small cells have an average cellular size of from about 5 to about 50 microns.8. The multi-cellular polystyrene of claim 1 , wherein the blowing agent comprises a ...

BRANCHED POLYMER, METHOD FOR PREPARING THE SAME AND METHOD FOR PREPARING A FOAM

A branched polymer, a preparation method thereof and a method for preparing a foam are provided. The branched polymer is a transesterification product of a composition, and the composition includes 100 parts by weight of polyethylene terephthalate and 0.5-2.0 parts by weight of polyol. The branched polymer has an inherent viscosity of from 1.2 dL/g to 1.6 dL/g, a number average molecular weight of from 75,000 g/mol to 90,000 g/mol, a polydispersity index from 3.0 to 6.0, a melt index from 0.8 g/10 min to 7.5 g/10 min, a shear viscosity from 800 Pa·s to 1900 Pa·s, and a melt strength from 30 cN to 80 cN. 1. A branched polymer , which is a transesterification product of a composition , wherein the composition comprises 100 parts by weight of polyethylene terephthalate and 0.5-2 parts by weight of polyol , wherein the branched polymer has an inherent viscosity of from 1.2 dL/g to 1.6 dL/g , a number average molecular weight of from 75 ,000 g/mol to 90 ,000 g/mol , a polydispersity index from 3.0 to 6.0 , a melt index from 0.8 g/10 min to 7.5 g/10 min , a shear viscosity from 800 Pa·s to 1900 Pa·s , and a melt strength from 30 cN to 80 cN.2. The branched polymer as claimed in claim 1 , wherein the polyethylene terephthalate has a number average molecular weight from 30 claim 1 ,000 g/mol to 55 claim 1 ,000 g/mol claim 1 , a polydispersity index from 1.4 to 1.8 claim 1 , and an inherent viscosity from 0.40 dL/g to 0.95 dL/g.3. The branched polymer as claimed in claim 1 , wherein the polyol is polyether polyol having 3-8 hydroxyl groups claim 1 , aliphatic polyol having 3-8 hydroxyl groups claim 1 , or a combination thereof.4. The branched polymer as claimed in claim 1 , wherein the composition does not comprise an organic acid claim 1 , acid anhydride claim 1 , epoxy-group-containing compound claim 1 , or solvent.5. The branched polymer as claimed in claim 1 , wherein the composition further comprises 0.1-0.5 parts by weight of antioxidant.6. The branched polymer as ...

POLYMERIC MATERIAL FOR CONTAINER

A formulation for producing a polymeric material including high-density polyethylene, a chemical blowing agent, and other optional components is described. 1. A formulation for forming an insulative cellular non-aromatic polymeric material comprising(a) at least one high density polyethylene (HDPE) base resin and(b) a chemical blowing agent.2. The formulation of claim 1 , wherein the HDPE is a high melt strength HDPE.3. The formulation of claim 1 , wherein the HDPE is long-chain branching HDPE.4. The formulation of claim 1 , wherein the unimodal HDPE is a hexene copolymer.5. The formulation of claim 4 , wherein the HDPE base resin is about 85 wt % to 99.9 wt %.6. The formulation of claim 5 , wherein the HDPE base resin is about 10% to 100% virgin HDPE.7. The formulation of claim 1 , wherein the chemical blowing agent is about 0.1 wt % to 2 wt %.8. The formulation of claim 1 , further comprising a nucleating agent.9. The formulation of claim 8 , wherein the nucleating agent is selected from the group consisting of talc claim 8 , CaCO claim 8 , mica claim 8 , and mixtures of at least two of the foregoing.10. The formulation of claim 1 , wherein the nucleating agent is about 0.1 wt % to 7 wt %.11. The formulation of claim 10 , wherein the formulation lacks talc.12. The formulation of claim 11 , further comprising a slip agent.13. The formulation of claim 12 , wherein the slip agent is about 0 wt % to 3 wt %.14. The formulation of claim 1 , further comprising a colorant.15. The formulation of claim 14 , wherein the colorant is about 0 wt % to 4 wt %.16. The formulation of claim 1 , wherein the base resin is 100% virgin HDPE.17. The formulation of 1 claim 1 , wherein the HDPE base resin comprises a first HDPE base resin that comprises 100% virgin HDPE and a second HDPE base resin that comprises regrind.18. A method of forming an insulative container comprising blow molding a tube or parison comprising an insulative cellular non-aromatic polymeric material comprising (a) ...

THERMOPLASTIC POLYESTER RESIN FOAM SHEET, THERMOPLASTIC POLYESTER RESIN FOAM CONTAINER, METHOD FOR PRODUCING THERMOPLASTIC POLYESTER RESIN FOAM SHEET, AND METHOD FOR PRODUCING THERMOPLASTIC POLYESTER RESIN FOAM CONTAINER

A thermoplastic polyester resin foam sheet includes a foam layer containing a thermoplastic polyester resin, in which a number average molecular weight Mn of the thermoplastic polyester resin is 9,000 to 26,000, a Z-average molecular weight Mz is 240,000 to 710,000, and a content of acetaldehyde in the foam layer is 25 ppm by mass or less. 1. A thermoplastic polyester resin foam sheet comprising:a foam layer containing a thermoplastic polyester resin,wherein a number average molecular weight Mn of the thermoplastic polyester resin contained in the foam layer is 9,000 to 26,000,a Z-average molecular weight Mz of the thermoplastic polyester resin contained in the foam layer is 240,000 to 710,000, anda content of acetaldehyde in the foam layer is 25 ppm by mass or less.2. The thermoplastic polyester resin foam sheet according to claim 1 , wherein a ratio represented by Mz/Mn is 8.0 to 36.0.3. The thermoplastic polyester resin foam sheet according to claim 1 , wherein a content of ashes in the foam layer is 5.0 mass % or less.4. The thermoplastic polyester resin foam sheet according to claim 1 , wherein a content of heavy metals in the foam layer is 1 claim 1 ,000 ppm by mass or less.5. The thermoplastic polyester resin foam sheet according to claim 1 , wherein the thermoplastic polyester resin contained in the foam layer includes a plant-derived thermoplastic polyester resin.6. The thermoplastic polyester resin foam sheet according to claim 1 , wherein an amount of a gel in the thermoplastic polyester resin contained in the foam layer is 0.5% to 12.0% by weight.7. A thermoplastic polyester resin foam container comprising:a foam layer containing a thermoplastic polyester resin,wherein a number average molecular weight Mn of the thermoplastic polyester resin contained in the foam layer is 9,000 to 26,000,a Z-average molecular weight Mz of the thermoplastic polyester resin contained in the foam layer is 240,000 to 710,000, anda content of acetaldehyde in the foam layer is ...

High-strength eTPU

Foamed pellets contain a thermoplastic polyurethane obtainable or obtained by reacting a polyisocyanate composition (IC), containing at least one aliphatic diisocyanate having a number-average molecular weight of less than 200 g/mol, at least one chain extender (CE1), and a polyol composition (PC). A process can be used for the production of such foamed pellets. The foamed pellets can be used for the production of a molded body.

Self Assembling Beta-Barrel Proteins Position Nanotubes

The present invention relates to the extraordinary properties of recently discovered nanotubes. This disclosure teaches a method for using barrel proteins acting as scaffolds to guide assembly of nanotubes, and using nano-molecular molding jigs to format the nanotubes into stable arrays with the precise geometric architecture desired. This disclosure teaches nanotube technology with principles of protein folding and aggregated self-assembly. In certain embodiments, the disclosure teaches using highly modified barrel proteins to form hydrophobic and hydrophilic channels that guide the nanotubes into their centers, or other geometric patterns utilizing silicone aerogel to form nano-molecular molds, jigs, and surfaces to position nanotubes in precise geometric arrangements and arrays. This disclosure teaches new uses of barrel proteins as self-assembling molding tools to develop new nanometer scaled devices and their uses herein.

NON-VOC PROCESSING AIDS FOR USE IN MANUFACTURING FOAMS USING LOW GLOBAL WARMING POTENTIAL BLOWING AGENTS

A foamable polymeric mixture is provided that includes a polymer composition, at least one blowing agent, and at least one non-VOC processing aid comprising one or more of an adipate ester; benzoate; fatty acids and their derivatives, propylene carbonate; ethylene oxide/propylene oxide block copolymer; styrene-methyl methacrylate copolymer; and a dispersion of organic salt of a fatty acid in copolymer. The blowing agent comprising at least one of carbon dioxide, hydrofluoroolefins, hydrochlorofluoroolefins and hydrofluorocarbons, and mixtures thereof.

PARTICULATE POLYAMIDE, AND METHOD FOR PREPARING THE PARTICULATE POLYAMIDE

A particulate polyamide is provided. The particulate polyamide is porous and includes at least one of polyamide 4 and polyamide 3. In addition, the particulate polyamide has a particle diameter (d50) of from 10 μm to 1,000 μm and a particle diameter dispersion degree (Dv/Dn) of not greater than 3.0, wherein Dv represents the volume average particle diameter of the particulate polyamide, and Dn represents the number average particle diameter of the particulate polyamide. 1. A particulate polyamide comprising at least one of polyamide 4 and polyamide 3 , wherein the particulate polyamide is porous and has a particle , diameter (d50) of from 10 μm to 1 ,000 μm and a particle diameter dispersion degree (Dv/Dn) of not greater than 3.0 , wherein Dv represents a volume average particle diameter of the particulate polyamide and Dn represents a number average particle diameter of the particulate polyamide.213-. (canceled) This patent application is based on and claims priority pursuant to 35 U.S.C. § 119 to Japanese Patent Application No. 2015-055551, 2015-083124, and 2016-004568, filed on Mar. 19, 2015, Apr. 15, 2015, and Jan. 13, 2016, respectively, in the Japan Patent Office, the entire disclosure of which is hereby incorporated by reference herein.This disclosure relates to a particulate polyamide, and to a method for preparing the particulate polyamide.Particulate polyamide produces good light scattering effect while having good absorption ability (such as oil absorption ability), and therefore it is considered to use particulate polyamide as an adsorbent or a component of cosmetics such as foundation cream or cleansing cream.In addition, polyamide 4 (i.e., nylon 4) which is a polymer of 2-pyrrolidone, and polyamide 3 (i.e., nylon 3) which is a polymer of 2-azetidinone can decompose in soil while having good hygroscopic property.With respect to the method for preparing polyamide 4, a method including polymerizing 2-pyrrolidone in the presence of a basic catalyst and an ...

POLYURETHANE FOAM AND PROCESS FOR PRODUCING SAME

The invention relates to a process used to produce open-cell and extremely fine-cell PUR/PIR rigid foams, said process using a polyol formulation comprising a specific isocyanate-reactive component, a catalyst component having zerewitinoff-active hydrogens and a cell-opener component. 1. A process for producing rigid PUR/PIR foams having an apparent density of 30-90 kg/maccording to ISO 845:2006 , an open-cell content of >90% according to ISO 4590:2002 , and having an average cell diameter of <50 μm according to optical microscopy evaluation , comprising the steps ofi) producing reaction mixture R) comprising an isocyanate-reactive component A) comprising at least one polyol component A1) having a functionality of >2.5 comprising at least one of polyether polyols, polyester polyols, polycarbonate polyols, polyether polycarbonate polyols and polyether ester polyols,', 'a catalyst component D) comprising a catalytically active compound D1) having Zerewitinoff-active hydrogens,', 'an assistant or additive substance E) comprising a cell-opening compound,', 'wherein a proportion of all primary OH functions present in the isocyanate-reactive component A) based on a total number of terminal OH functions in the component A) is at least 30%,', 'a polyisocyanate component B) and', {'sub': '2', 'COin the supercritical state as blowing agent component C),'}], 'a polyol formulation P) comprising'}ii) introducing the foam-forming reaction mixture R) into a mold,iii) foaming the reaction mixture R) andiv) demolding a rigid PUR/PIR foam formed from the reaction mixture2. The process as claimed in claim 1 , wherein step i) and ii) are carried out under supercritical conditions.3. The process as claimed in claim 1 , wherein step i) is carried out in a mixing head or high-pressure mixing head.4. The process as claimed in claim 1 , whereinin step ii) the reaction mixture R) is introduced into a sealed mold, wherein the counterpressure in the mold during injection is 2-90 bar.5. The ...

IMPACT ABSORBING FOAM

This invention relates to impact absorbing foams. These foams comprise a polymeric foam and ceramic particulates dispersing the foam. These foams have numerous uses, including, for example, as interior pads for football helmets, and the like, for reducing head injuries. 1. An impact absorbing foam comprising:a polymeric foam; andceramic particulates dispersed in the polymeric foam;wherein the ceramic particulates have an average diameter in the range from about 1 to about 400 microns and a crushing strength in the range from about 100 to about 2,000,000 psi.2. The foam of wherein the average distance between the ceramic particulates in the polymeric foam is in the range from about 100 to about 2000 microns.3. The foam of wherein the foam is capable of absorbing on impact at least about 20% of the energy resulting from such impact.4. The foam of wherein the foam has a Young's modulus in the range from about 0.3 to about 75 GPa.5. The foam wherein the foam has a tensile strength in the range from about 0.001 to about 100 MN/m.6. The foam of wherein the polymeric foam comprises a continuous polymeric phase and a discontinuous phase comprising gas bubbles and/or void spaces dispersed in the polymeric phase.7. The foam of wherein the polymeric phase comprises a polymer claim 6 , the polymer comprising polyurethane claim 6 , polystyrene claim 6 , polyvinyl chloride claim 6 , polybutadiene claim 6 , halogenated butyl rubber claim 6 , styrene-butadiene rubber claim 6 , polyacrylic rubber claim 6 , butyl rubber claim 6 , ethylene-propylene rubber claim 6 , neoprene rubber claim 6 , hypalon rubber claim 6 , polysulfide elastomer claim 6 , polysilicone claim 6 , fluorocarbon rubber claim 6 , polyhexafluoropropylene claim 6 , polytetrafluoroethylene claim 6 , polypropylene claim 6 , polychlorotrifluoroethylene claim 6 , polymethylvinyl ether claim 6 , or a mixture of two or more thereof.8. The foam of wherein the gas bubbles and/or void spaces are derived from one or more ...

Method for producing a foamed material,composition in the form of an emulsion used in said method, and foamed material that can be obtained from said method

The present invention relates to a process for producing a foamed material, wherein a composition in the form of emulsion with a matrix-forming component, a surfactant component and a near-critical or supercritical blowing agent component is submitted to a lowering of pressure. The blowing agent component further comprises a hydrophobic co-component, which is soluble in supercritical CO 2 at a pressure of ≧150 bar, is insoluble in subcritical CO 2 at a pressure of ≦40 bar and is insoluble in the matrix-forming component and furthermore is present in a proportion from ≧3 wt % to ≦35 wt % of the blowing agent component. It further relates to a composition in the form of emulsion to be used herein and a foamed material obtainable by the process according to the invention.

COMPOSITIONS CONTAINING TETRAFLUOROPROPENE AND CARBON DIOXIDE

Disclosed are compositions useful in a wide variety of applications, including heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The preferred heat transfer fluid comprises from about 1 to about 40 percent, on a weight basis, of carbon dioxide (CO) and from about 99 to about 60 percent, on a weight basis, of a compound having the Formula I XCFR(I), where X is a Cor a Cunsaturated, substituted or unsubstituted, alkyl radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3. A preferred compound of Formula I is tetrafluoropropene, particularly 1,1,1,3-tetrafluoropropene and/or 1,1,1,3-tetrafluoropropene. 1. A foam formed from a foamable composition comprising a blowing agent comprising from about 1 to about 40 percent by weight of carbon dioxide (CO) and from about 60 to about 99 percent by weight of one or more compounds of Formula I , XCF(I) , wherein X is a Cunsaturated , substituted , alkyl radical , and wherein the foam comprises COand said at least one compound of Formula I in a weight ratio of from about 1:99 to about 40:60 , respectively.2. A closed cell foam comprising the foam of .3. The foam of wherein the weight ratio of COto said at least one compound of Formula I is at least about 5:95.4. The foam of wherein the weight ratio of COto said at least one compound of Formula I is at least about 3:97.5. The foam of wherein said blowing agent is non-flammable.6. The foam of claim 1 , wherein said foamable composition further comprises at least one adjuvant selected from the group consisting of dispersing agents claim 1 , surfactants claim 1 , supplemental flame suppressants claim 1 , cell stabilizers claim 1 , polyols claim 1 , polyol premix components claim 1 , and combinations of two or more of these.7. The foam of claim 1 , wherein said foam is a thermoplastic foam.8. The foam of claim 7 , wherein the thermoplastic foam is ...

METHODS OF MANUFACTURING ARTICLES UTILIZING FOAM PARTICLES

Methods for manufacturing articles of footwear are provided. In various aspects, the methods comprise utilizing additive manufacturing methods with foam particles. In some aspects, the disclosed methods comprise selectively depositing a binding material on foam particles in a target area such that the binding material coats at least a portion of defining surfaces of the foam particles with the binding material. The binding material is then cured to affix foam particles in the target area to one another. In various aspects, the disclosed methods can be used to manufacturer articles with sub-regions that differential levels of affixing between the foam particles, and thereby resulting in sub-regions with different properties such as density, resilience, and/or flexural modulus. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure. 1. An article made by a method according to the method comprising:arranging a plurality of foam particles, wherein the arranged plurality of foam particles comprises a thermoplastic elastomer material, and wherein the arranged plurality of foam particles has a number average particle size of about 0.3 millimeters to about 10 millimeters in a longest dimension;depositing a binding material in a binding material target area, wherein the binding material target area comprises a portion of the arranged plurality of foam beads, and wherein the depositing coats at least a portion of defining surfaces of the portion of the arranged plurality of foam particles with the binding material, and wherein the binding material comprises a thermal energy absorber, which is an infrared energy absorber; andcuring deposited binding material coating at least a portion of the defining surfaces of the portion of the arranged plurality of foam particles within the binding material target area, wherein curing comprises affixing a portion of the arranged plurality of ...

PROCESSING AIDS FOR USE IN MANUFACTURE EXTRUDED POLYSTYRENE FOAMS USING LOW GLOBAL WARMING POTENTIAL BLOWING AGENTS

A foamable polymeric mixture is provided that includes a polymer composition and at least one blowing agent. The blowing agent may comprise any blowing agents known not to deplete the ozone or increase the prevalence of global warming, such as CO, HFO, HFC and mixtures thereof. The foamable polymeric mixture may further includes at least one processing aid comprising an organic phase changing material. The inventive foamable mixture is capable of processing at a pressure range of 800 to 1200 psi (5.5 to 8.3 MPa). 1. A foamed insulation product comprising: polystyrene;', 'a blowing agent composition comprising carbon dioxide and at least one of hydrofluoroolefins and hydrofluorocarbons, and', 'from 0.05 to 3 wt. % of an organic phase changing material, based upon the weight of the polymeric foam composition, wherein the organic phase changing material has a transition temperature from liquid to solid at a temperature from −5 to 60° C.;, 'a polymeric foam composition comprisingwherein the foamed insulation product has an insulation R-value per inch of between 4 and 7.2. The foamed insulation product of claim 1 , wherein the organic phase changing material comprises at least one of a fatty acid ester and a wax.3. The foamed insulation product of claim 2 , wherein the organic phase changing material comprises a synthetic beeswax.4. The foamed insulation product of claim 1 , wherein the organic phase changing material is microencapsulated.5. The foamed insulation product of claim 4 , wherein the organic phase changing material is microencapsulated by a polymer material comprising one or more of melamine formaldehyde claim 4 , urea formaldehyde claim 4 , and acrylate copolymer resins.6. The foamed insulation product of claim 1 , further comprising at least one infrared attenuating agent.7. The foamed insulation product of claim 1 , wherein the foamed insulation product is monomodal.8. The foamed insulation product of claim 1 , wherein the foamed insulation product has a ...

PROPYLENE RESIN FOAM PARTICLES AND FOAM PARTICLE MOLDED ARTICLE

Provided is an expanded propylene resin bead including a core layer in a foamed state, which includes a propylene-based resin composition (a) satisfying the following (i) and (ii); and a cover layer which includes an olefin-based resin (b) satisfying the following (iii) or (iv): 1. An expanded propylene resin bead comprising a core layer being in a foamed state and constituted of a propylene-based resin composition (a) and a cover layer covering the core layer and constituted of an olefin-based resin (b) ,the propylene-based resin composition (a) satisfying the following (i) and (ii), and the olefin-based resin (b) satisfying the following (iii) or (iv):(i) the propylene-based resin composition (a) is a mixture of 65% by weight to 98% by weight of a propylene-based resin (a1) having a melting point of 145° C. to 165° C. and a flexural modulus of 1,200 MPa or more and 35% by weight to 2% by weight of a propylene-based resin (a2) having a melting point of 100° C. to 145° C. and a flexural modulus of 800 MPa to 1,200 MPa, provided that a sum total weight of the propylene-based resin (a1) and the propylene-based resin (a2) is 100% by weight;(ii) a difference between the melting point of the propylene-based resin (a1) and the melting point of the propylene-based resin (a2) [(melting point of a1)-(melting point of a2)] is 5° C. to 25° C.;(iii) the olefin-based resin (b) is a crystalline olefin-based resin having a melting point (TmB) that is lower than a melting point (TmA) of the propylene-based resin composition (a), with a difference between the melting point (TmA) and the melting point (TmB) [TmA-TmB] being more than 0° C. and 80° C. or less; and(iv) the olefin-based resin (b) is a non-crystalline olefin-based resin having a softening point (TsB) that is lower than the melting point (TmA) of the propylene-based resin composition (a), with a difference between the melting point (TmA) and the softening point (TsB) [TmA-TsB] being more than 0° C. and 100° C. or less.2. ...

FOAMED INJECTION MOULDED ARTICLE

The invention is directed to a foamed injection moulded article comprising a foam composition obtained by foaming high density polyethylene having a quotient of melt strength and apparent viscosity >2 cN/k·Pa·s wherein the melt strength is determined as described in ISO 16790:2005 and the apparent viscosity is determined as described in ISO 11443:2014. 1. A foamed injection moulded article comprising a foam composition obtained by foaming high density polyethylene having a quotient of melt strength and apparent viscosity >2 cN/k·Pa·s wherein the melt strength is determined as described in ISO 16790:2005 and the apparent viscosity is determined as described in ISO 11443:2014.2. The article according to characterised in that the high density polyethylene hasMI (melt index) in the range between ≥0.01 and ≤50{'sup': '3', 'density in the range between ≥930 and ≤985 kg/mand'} MI in the range between ≥1 and ≤100 and', {'sup': '3', 'density in the range between ≥930 and ≤985 kg/m'}], 'and the high density polyethylene has been obtained by chain branching high density polyethylene having'}, 'a gel fraction less than 5%'}wherein MI (melt index) is measured according ISO1133-1:2011 at a temperature of 190° C. at a load of 2.16 kg, the density is measured at a temperature of 23° C. according ISO1183-1:2012 and the gel fraction is determined according to ASTM D2765-11.3. The article according to characterised in that chain branching is performed by irradiation.4. The article according to characterised in that irradiation takes place via electron beam irradiation.5. The article according to characterised in that the foam injection moulded article has a density between 100 and 750 kg/m.6. The article according to characterised in that the melt strength of polyethylene to be foamed ≥10 cN.7. The article according to characterised in that the article comprises two compact skins and a foamed core between the two compact skins.8. The article according to characterised in that the high ...

COMPOSITION FOR PREPARING A FOAM, FOAM, AND SHOE EMPLOYING THE SAME

A composition for preparing a foam, a foam, and a shoe employing the foam are provided. The composition for preparing a foam includes 3-30 parts by weight of a first polymer and at least one of a second polymer and a third polymer. The first polymer is cyclic olefin polymer (COP), cyclic olefin copolymer (COC), metallocene based cyclic olefin copolymer (mCOC), fully hydrogenated conjugated diene-vinyl aromatic copolymer, or a combination thereof. The total weight of the second polymer and the third polymer is 70-97 parts by weight. The second polymer is polyolefin, olefin copolymer, or a combination thereof. The third polymer is conjugated diene-vinyl aromatic copolymer, partially hydrogenated conjugated diene-vinyl aromatic copolymer, or a combination thereof. The total weight of the first polymer and at least one of the second polymer and the third polymer is 100 parts by weight. 1. A composition for preparing a foam , comprising:3-30 parts by weight of a first polymer, wherein the first polymer is cyclic olefin polymer (COP), cyclic olefin copolymer (COC), metallocene based cyclic olefin copolymer (mCOC), fully hydrogenated conjugated diene-vinyl aromatic copolymer, or a combination thereof; andat least one of a second polymer and a third polymer, wherein the total weight of the second polymer and the third polymer is 70-97 parts by weight, the second polymer is polyolefin, olefin copolymer, or a combination thereof, the third polymer is conjugated diene-vinyl aromatic copolymer, partially hydrogenated conjugated diene-vinyl aromatic copolymer, or a combination thereof, and the total weight of the first polymer and at least one of the second polymer and the third polymer is 100 parts by weight.2. The composition for preparing a foam as claimed in claim 1 , wherein the cyclic olefin copolymer is a copolymer of a norbornene-based monomer and an olefin-based monomer.3. The composition for preparing a foam as claimed in claim 2 , wherein the norbornene-based monomer ...

RAPID SOLID-STATE FOAMING

Disclosed, among other things, are ways to manufacture reduced density thermoplastics using rapid solid-state foaming and machines useful for the saturation of plastic. In one embodiment, a foaming process may involve saturating a semi-crystalline polymer such as Polylactic Acid (PLA) with high levels of gas, and then heating, which may produce a reduced density plastic having high levels of crystallinity. In another embodiment, a foaming process may produce layered structures in reduced density plastics with or without integral skins. In another embodiment, a foaming process may produce deep draw structures in reduced density plastics with or without integral skins. In yet another embodiment, a foaming process may utilize additives, blends, or fillers, for example. In yet another embodiment, a foaming process may involve saturating a semi-crystalline polymer such as Polylactic Acid (PLA) with high levels of gas, and then heating, which may produce a reduced density plastic having high levels of crystallinity. 117-. (canceled)18. A method , comprising:inserting a polylactic acid polymer material into a pressurized chamber, the polylactic acid polymer material having a thickness of about 0.012 inches to about 0.040 inches;exposing the polylactic acid polymer material in the pressurized chamber to a foaming agent at a pressure of at least about 500 psi for less than about ten minutes;removing the polylactic acid polymer material from the pressurized chamber; andheating the polylactic acid polymer material, thereby reducing the density of the polylactic acid polymer material.19. The method of claim 18 , wherein the thickness of the polylactic acid polymer material is about 0.020 inches to about 0.024 inches.20. The method of claim 18 , wherein the pressure is less than about 3 claim 18 ,000 psi.21. The method of claim 18 , wherein the polylactic acid polymer material is exposed to the foaming agent for at least 30 about seconds22. The method of claim 18 , wherein ...

REVERSIBLY CROSS-LINKABLE RESIN

Reversibly cross-linkable foam is provided. The reversibly cross-linked foam includes a first polymeric material, at least one reversibly cross-linkable monomer polymerized with the first polymeric material, and at least one blowing agent. The reversibly cross-linkable co-polymeric foam is thermally stable at temperatures of at least 10 degrees higher than otherwise identical polymeric foam that does not include the reversibly cross-linkable agent polymerized with the first polymeric material. 1. A reversibly cross-linkable foamable mixture comprising:a first polymeric material and;at least one cross-linking agent copolymerized with said first polymeric material, wherein said reversibly cross-linkable foamable mixture is thermally stable at temperatures of at least 10 degrees Celsius higher than otherwise identical polymeric foam that does not include the cross-linking agent copolymerized with the first polymeric material.2. The reversibly cross-linkable foamable mixture of claim 1 , wherein said first polymeric material comprises an alkenyl aromatic polymer.3. The reversibly cross-linkable foamable mixture of claim 2 , wherein said alkenyl aromatic polymer is derived from one or more of styrene claim 2 , α-methylstyrene claim 2 , ethylstyrene claim 2 , vinyl benzene claim 2 , vinyl toluene claim 2 , chlorostyrene claim 2 , and bromostyrene.4. The reversibly cross-linkable foamable mixture of claim 1 , wherein said cross-linking agent comprises a metal-ligand complex ion.5. The reversibly cross-linkable foamable mixture of claim 4 , wherein said metal-ligand complex ion includes a hydroxyl-containing (meth)acrylate.6. The reversibly cross-linkable foamable mixture of claim 4 , wherein said ligand is at least one of a polyester (meth)acrylate and a polyurethane (meth)acrylate.7. The reversibly cross-linkable foamable mixture of claim 4 , wherein said metal-ligand complex comprises a terpyridine ligand reacted with a metal ion.8. The reversibly cross-linkable foamable ...

METHOD FOR PRODUCING MOLDED FOAM ARTICLES, AND MOLDED FOAM ARTICLES

A method for producing molded foam articles that molds molded foam articles continuously, the method comprising continuously repeating the following step 1, step 2, step 3 and step 4 in this order; wherein step 1 comprises melting a resin composition that includes a liquid crystal polyester; step 2 comprises introducing, with an introduction device, a supercritical fluid that is unreactive, in a supercritical state, with the liquid crystal polyester, and is a gas at normal temperature and normal pressure, into the resin composition in an amount of at least 0.1 parts by mass but not more than 0.3 parts by mass per 100 parts by mass of the liquid crystal polyester, and then melt-kneading the resultant mixture; step 3 comprises injecting the melt-kneaded resin composition containing the supercritical fluid into a mold; and step 4 comprises conducting foaming by lowering at least one of the pressure and the temperature of the supercritical fluid contained in the resin composition to a value below the critical point of the supercritical fluid, thereby producing a molded foam article. This liquid crystal polyester has a melt tension at a temperature 20° C. higher than the flow start temperature of at least 5 mN but not more than 100 mN. 1. A method for producing molded foam articles that molds molded foam articles continuously , the method comprising continuously repeating step 1 , step 2 , step 3 and step 4 described below in this order , whereinstep 1 comprises melting a resin composition that includes a liquid crystal polyester,step 2 comprises introducing, with an introduction device, a supercritical fluid that is unreactive, in a supercritical state, with the liquid crystal polyester, and is a gas at normal temperature and normal pressure, into the resin composition in an amount of at least 0.1 parts by mass but not more than 0.3 parts by mass per 100 parts by mass of the liquid crystal polyester, and then melt-kneading a resultant mixture,step 3 comprises injecting ...

Metallic acrylate salts to increase polymer melt strength

A composition can include a polyolefin, a styrenic polymer, or a polylactic acid. The composition can include a metallic acrylate salt. A method of making a composition can include melt mixing a polyolefin, a styrenic polymer, or a polylactic acid with a metallic acrylate salt.

POLYMER FOAM AND METHOD FOR PREPARING THE SAME

Polymer foam and a method for preparing the same are disclosed. In the present disclosure, the method sequentially comprises the following steps: providing a polymer body; performing a pressure-induced flow (PIF) process on the polymer body at a first predetermined temperature and a first predetermined pressure for a pressure holding time, to obtain a polymer sheet; and performing a foaming process on the polymer sheet by using a foaming agent at a second predetermined temperature and a second predetermined pressure for a saturation time, to obtain polymer foam. 1. A method for preparing polymer foam , comprising the following steps:providing a polymer body;performing a pressure-induced flow (PIF) process on the polymer body at a first predetermined temperature and a first predetermined pressure for a pressure holding time, to obtain a polymer sheet; andperforming a foaming process on the polymer sheet by using a foaming agent at a second predetermined temperature and a second predetermined pressure for a saturation time, to obtain polymer foam.2. The method of claim 1 , wherein the first determined temperature is lower than a melting point of the polymer body.3. The method claim 1 , wherein the first predetermined temperature is in a range from 100° C. to 160° C.4. The method of claim 1 , wherein the first predetermined pressure is in a range from 20 MPa to 420 MPa.5. The method of claim 1 , wherein the pressure holding time is in a range from 10 sec to 300 sec.6. The method of claim 1 , wherein the second predetermined temperature is in a range from 130° C. to 160° C.7. The method of claim 1 , wherein the second predetermined pressure is in a range from 11.7 MPa to 17.3 MPa.8. The method of claim 1 , wherein the saturation time is in a range from 10 min to 120 min.9. The method of claim 1 , wherein the polymer body is semi-crystalline thermoplastics or thermoplastic elastomers.10. The method of claim 1 , wherein the polymer body comprises at least one selected ...

EXPANDED POLYLACTIC ACID RESIN BEADS AND MOLDED ARTICLE OF EXPANDED POLYLACTIC ACID RESIN BEADS

The present invention provides expanded polylactic acid resin beads, in which each bead is composed of a core layer that is in an expanded state and contains a crystalline polylactic acid resin, and a coating layer that coats the core layer and contains a mixed resin of an amorphous polylactic acid resin and a crystalline polyolefin resin, wherein the content of the crystalline polyolefin resin in the coating layer is 3% by weight or more and less than 50% by weight. The expanded polylactic acid resin beads can stably produce a molded article of expanded polylactic acid resin beads excellent in fusibility of the expanded polylactic acid resin beads therein and also excellent in solvent resistance. 1. Expanded polylactic acid resin beads , wherein:the expanded bead is composed of a core layer that is in an expanded state and contains a crystalline polylactic acid resin, and a coating layer that coats the core layer and contains a mixed resin of an amorphous polylactic acid resin and a crystalline polyolefin resin, andthe content of the crystalline polyolefin resin in the coating layer is 3% by weight or more and less than 50% by weight.2. The expanded polylactic acid resin beads according to claim 1 , wherein the melting point of the crystalline polyolefin resin is lower than the melting point of the crystalline polylactic acid resin by 20° C. or more.3. A molded article of expanded polylactic acid resin beads claim 1 , which is produced by molding the expanded polylactic acid resin beads according to in a mold cavity.4. The molded article of expanded polylactic acid resin beads according to claim 3 , wherein the bulk density of the molded article of expanded polylactic acid resin beads is 15 to 300 kg/m claim 3 , and the ratio of a bending strength (kPa) of the molded article of expanded polylactic acid resin beads to the bulk density (kg/m) thereof (bending strength/bulk density) is 13 or more (kPa·m/kg).5. The molded article of expanded polylactic acid resin beads ...

POLYMER FOAMS INCLUDING FUNCTIONALIZED CARBON NANOTUBESG

This disclosure describes micro, sub-micro, and nano-cellular polymer foams formed from a polymer composition that includes a polymer and functionalized carbon nanotubes, and systems and methods of formation thereof. The microcellular polymer foam has an average pore size within a range of 1 micron to 100 microns, the sub-microcellular polymer foam has an average pore size within a range of 0.5 microns to 1 micron, and the nano-cellular polymer foam has an average pore size within a range of 10 nanometers to 500 nanometers. In other aspects, this disclosure describes micro, sub-micro, and nano-cellular polymer foams formed from a polymer composition that includes a polymer and non-functionalized carbon nanotubes. 1. A polymer foam comprising:one or more polymers; andfunctionalized carbon nanotubes, the functionalized carbon nanotubes having multiple walls and one or more oxygen based functional groups,wherein the polymer foam has an average pore size within a range of 10 nanometers to 100 microns.2. The polymer foam of claim 1 , wherein the polymer foam has an average pore size of less than or equal to 100 nanometers.3. The polymer foam of claim 1 , wherein the polymer foam has a cell density of greater than or equal to 10E12 cells per cubic centimeter.4. The polymer foam of claim 1 , wherein the polymer foam has a foam density within a range of 1 percent to 50 percent of a bulk density of a material comprising the polymer foam.5. The polymer foam of claim 1 , wherein the polymer foam comprises a thermal conductivity of 0.001 to 0.01 Watts per meter-Kelvin.6. The polymer foam of claim 1 , wherein the functionalized carbon nanotubes are dispersed in the one or more polymers claim 1 , the polymer foam claim 1 , or both.7. The polymer foam of claim 1 , wherein the functionalized carbon nanotubes are aligned with each other in the one or more polymers claim 1 , the polymer foam claim 1 , or both.8. The polymer foam of claim 1 , wherein cells of the polymer foam comprise ...

Foam Bead and Sintered Foam Structure

The present disclosure provides a foam bead. The foam bead contains at least one of the following components: (A) a block composite; and/or (B) a crystalline block composite. The present disclosure also provides a sintered foam structure formed from a composition comprising at least one of the following components: (A) a block composite; and/or (B) a crystalline block composite. 1. A foam bead comprising at least one of the following components:(A) a block composite; and/or(B) a crystalline block composite.2. The foam bead of comprising (A) the block composite.3. The foam bead of comprising (B) the crystalline block composite.4. The foam bead of claim 1 , wherein the foam bead has a weight ratio of (A) the block composite and (B) the crystalline block composite of from 0.25:1.0 to 4.0:1.0.5. The foam bead of claim 1 , wherein the foam bead has two melting peaks.6. The foam bead of claim 1 , wherein the foam bead has a first melting peak (Tm1) and a second melting peak (Tm2) claim 1 , and the difference between Tm1and Tm2is greater than claim 1 , or equal to claim 1 , 20° C.7. A sintered foam structure formed from a composition comprising at least one of the following components:(A) a block composite; and/or(B) a crystalline block composite.8. The sintered foam structure of claim 7 , wherein the sintered foam structure has a foam density of less than 0.20 g/cc; and a linear shrinkage of less than claim 7 , or equal to claim 7 , 1.0%.9. The sintered foam structure of comprising (A) the block composite.10. The sintered foam structure of claim 7 , wherein the sintered foam structure has a Type C Tear from 4.5 N/mm to 15 N/mm; and an average stress at break greater than claim 7 , or equal to claim 7 , 0.50 MPa. The present disclosure relates to polyolefin foams, and further polypropylene-based polymer foams. Polyolefin foams are conventionally utilized in footwear components, such as midsole applications. Crosslinked ethylene-based polymers including ethylene vinyl ...

Injection-molded foam of resin composition with satisfactory surface property and capable of weight reduction and rib design

A foam injection molded article includes a resin composition, wherein the resin composition includes: (A) a polycarbonate resin, (B) a thermoplastic polyester resin, (C) a polyester-polyether copolymer, and (D) a foaming agent. The article has an arithmetic average roughness (Ra) that is greater than 0.1 μm and less than 9 μm, a maximum height (Ry) that is greater than 1 μm and less than 90 μm; and a 10-point average roughness (Rz) that is greater than 1 μm and less than 70 μm.

RESIN FOAM PARTICLES, RESIN FOAM SHAPED PRODUCT, AND LAMINATE

Provided are resin foam particles that enable shaping of a sound absorbing member having excellent sound absorption performance through a resin foam shaped product. Also provided is a laminate that includes a resin foam shaped product as a base material and with which high sound absorption performance can be obtained even when the laminate is a thin material. The resin foam particles contain a resin and have a recessed external part. A ratio ρ/ρof density of the resin ρand true density ρof the resin foam particles is 2 to 20, and a ratio ρ/ρof true density ρof the resin foam particles and bulk density ρof the resin foam particles is 1.5 to 4.0. 1. Resin foam particles comprising a resin and having a recessed external part , wherein{'sub': 0', '1', '0', '1, 'a ratio ρ/ρof density ρof the resin and true density ρof the resin foam particles is 2 to 20, and'}{'sub': 1', '2', '1', '2, 'a ratio ρ/ρof true density ρof the resin foam particles and bulk density ρof the resin foam particles is 1.5 to 4.0.'}2. The resin foam particles according to claim 1 , having an average particle diameter of 0.5 mm to 6.0 mm.3. The resin foam particles according to claim 1 , wherein the resin has a surface tension of 37 mN/m to 60 mN/m at 20° C.4. The resin foam particles according to claim 1 , wherein the resin has a glass-transition temperature of not lower than −10° C. and not higher than 280° C.5. A resin foam shaped product obtained by fusing together the resin foam particles according to claim 1 , whereinthe resin foam shaped product includes pores that are continuous between the resin foam particles that have been fused and has a porosity of 15% to 80%.6. A soundproofing member comprising the resin foam shaped product according to .7. A laminate comprising a surface material (I) including a fiber assembly and a base material (II) including the resin foam shaped product according to claim 5 , wherein{'sup': 2', '2', '3', '3', '2', '2, 'the fiber assembly has a mass per unit area of ...

Decorative foam and method

Decorative foamed articles are prepared from foamed pellets, beads, particles, or other articles of a thermoplastic elastomer infused with a supercritical fluid in a pressurized container, then rapidly depressurized and heated either by immersion in a heated fluid that can rapidly heat the article or with infrared or microwave radiation to heat and foam the pellets, beads, particles, or other articles that are then molded into the articles. The pellets are dyed with a nonionic or anionic dye one of: (1) before being infused with the supercritical fluid, (2) during being infused with the supercritical fluid by a nonionic or anionic dye dissolved or dispersed in the supercritical fluid, which optionally comprises a polar liquid, (3) during immersion in the heated fluid, where the heated fluid contains the dye, or (4) after being foamed.

A METHOD FOR THE PREPARATION OF PLA BEAD FOAMS

The present invention relates to a method for the preparation of PLA beads, more particularly expanded PLA bead foams. In addition, the present invention relates to a method for the preparation of moldings by sintering PLA beads. The method comprises the following steps: A) providing unfoamed PLA pellets, B) heating said unfoamed PLA pellets to an annealing temperature and saturating with a blowing agent, C) maintaining said PLA pellets on the annealing temperature and saturating with said blowing agent, D) depressurizing and cooling the saturated PLA pellets of step C) to room temperature to form expanded PLA bead foams. 1. A method for preparation of expanded polylactide bead foams comprising the following steps:A) providing unfoamed polylactide pellets,B) heating said unfoamed polylactide pellets to an annealing temperature and saturating with a blowing agent,C) maintaining said polylactide pellets on the annealing temperature and saturating with said blowing agent,D) depressurizing and cooling the saturated polylactide pellets of step C) to room temperature to form expanded polylactide bead foams.2. The method according to claim 1 , in which the annealing temperature is in the range of 60° C.-180° C.3. The method according to claim 1 , in which the annealing time during step C) is in the range of 10 min-300 min.4. The method according to claim 1 , in which the polylactide pellets in step A) are chosen from the group of linear polylactide claim 1 , branched polylactide and polylactide copolymers with D-lactide contents claim 1 , or combinations thereof.5. method according to claim 4 , in which step B) takes place in a suspension medium.6. A method according to claim 4 , in which the polylactide pellets in step A) are mixed with polyolefins and/or polyesters.7. An expanded polylactide bead foam having a double crystal melting peak claim 4 , in which the distance between the two peaks is in the range of 5° C.-25° C.8. (canceled)9. The polylactide bead according to ...

FOAMABLE RESIN COMPOSITION FOR CONTROLLING LOSS CIRCULATION

This disclosure relates to a foamable resin composition containing a nitrogen gas-generating compound and methods of using the composition for loss circulation control. 1. A foamable resin composition , comprising:an epoxy resin;a nitrogen gas-generating compound;a surfactant; anda curing agent.2. The composition of claim 1 , wherein the epoxy resin comprises a bisphenol-A-based resin.3. The composition of claim 2 , wherein the epoxy resin is selected from a bisphenol-A-(epichlorohydrin) epoxy resin with oxirane mono [(C-Calkyloxy)methyl] derivatives and a bisphenol-A-(epichlorohydrin) epoxy resin with 1 claim 2 ,6-hexanediol diglycidyl ether.4. The composition of claim 1 , wherein the epoxy resin is about 75% to about 85% by weight of the composition.5. The composition of claim 1 , wherein the nitrogen gas-generating compound is an azo compound.6. The composition of claim 5 , wherein the azo compound is azodicarbonamide.7. The composition of claim 1 , wherein the nitrogen gas-generating compound is about 5% to about 15% by weight of the composition.8. The composition of claim 1 , wherein the surfactant is a hydroxysultaine.9. The composition of claim 8 , wherein the surfactant is cocamidopropyl hydroxysultaine.10. The composition of claim 1 , wherein the surfactant is about 1% to about 5% by weight of the composition.11. The composition of claim 1 , wherein the weight ratio of the nitrogen gas-generating compound to the surfactant is about 3:1.12. The composition of claim 1 , wherein the curing agent is a linear ethylene amine containing two primary nitrogens and one secondary nitrogen.13. The composition of claim 12 , wherein the curing agent is diethylenetriamine (DETA).14. The composition of claim 1 , wherein the curing agent is about 10% to about 13% by weight of the composition.15. A foamable resin composition claim 1 , comprising:a bisphenol-A-(epichlorohydrin) epoxy resin;azodicarbonamide in an amount of about 5% to about 10% by weight of the composition;a ...

COMPOSITIONS AND METHODS OF MAKING THERMOSET FOAMS FOR SHOE SOLES

A footwear article is provided. The footwear article includes a shoe sole. The shoe sole includes a crosslinked foam polyolefin elastomer having a density less than 0.88 g/cm, the crosslinked foam polyolefin elastomer including: a silane-grafted polyolefin elastomer, a silane-grafted olefin block copolymer, a polyolefin elastomer (POE), an olefin block copolymer (OBC), or a combination thereof; an ethylene vinyl acetate (EVA) copolymer; a crosslinker; a condensation catalyst; and a foaming agent. The shoe sole exhibits a compression set of from about 1.0% to about 50.0%, as measured according to ASTM D 395 (48 hrs @ 50° C.). 1. A crosslinked foam polyolefin elastomer composition prepared by the process comprising:mixing or dry blending a silane-grafted polyolefin elastomer, a crosslinker, an ethylene vinyl acetate copolymer, and a blowing agent, to form a crosslinkable polyolefin blend, andmolding the crosslinkable polyolefin blend to form the crosslinked foam polyolefin elastomer composition.2. The crosslinked foam polyolefin elastomer composition of wherein the silane-grafted polyolefin elastomer was prepared using a silane crosslinker selected from vinyltrimethoxy silane (VTMO) claim 1 , vinyltriethoxy silane (VTEO) and a combination thereof.3. The crosslinked foam polyolefin elastomer composition of wherein the ethylene vinyl acetate copolymer also has silicone oil.4. The crosslinked foam polyolefin elastomer composition of wherein the molding is compression molding or injection molding.5. The crosslinked foam polyolefin elastomer composition of claim 1 , wherein the crosslinker comprises one or more halogen molecules claim 1 , azo compounds claim 1 , carboxylic peroxyacids claim 1 , peroxyesters claim 1 , peroxyketals claim 1 , and peroxides.6. The crosslinked foam polyolefin elastomer composition of claim 1 , wherein the expansion ratio of the composition is from about 136% to about 178% claim 1 , and wherein the specific gravity of the composition is from ...

Method for manufacturing foam-molded article, and foam-molded article

A foam-molded article has high weldability to a polypropylene-based resin molded article, a high expansion ratio, and a predetermined level of impact resistance despite using inexpensive polyethylene-based resin. The foam-molded article includes a foamed and molded base material resin in which a first polyethylene-based resin, a second polyethylene-based resin, and a polypropylene-based resin are mixed. The first polyethylene-based resin has a long-chain branched structure and a density of 0.920 g/cm 3 or more. The second polyethylene-based resin is manufactured by a low pressure slurry method, and has a long-chain branched structure and a density of 0.920 g/cm 3 or less. The second polyethylene-based resin has a melt tensile force of 70 mN or more at 160° C. The polypropylene-based resin has a compounding ratio of 20% or more by weight of the base material resin.

BLOWING AGENTS IN POLYMER FOAM PROCESSING SYSTEMS

Methods and systems that include introducing blowing agent into a hopper of a polymeric foam processing system. 1. A method comprising:providing a hopper of a polymer foam processing system;supplying polymeric material to the hopper;supplying chemical blowing agent to the hopper;supplying physical blowing agent to the hopper;supplying the polymeric material, chemical blowing agent and physical blowing agent to an inlet of an extruder including a screw configured to rotate in a barrel;conveying a mixture of polymeric material, chemical blowing agent and physical blowing agent in a downstream direction in the extruder;accumulating a shot of the mixture of polymeric material and blowing agent; andinjecting the shot into a mold to form a molded polymeric foam article.2. The method of claim 1 , wherein the weight percentage of the chemical blowing agent in the mixture is less than or equal to 1.0 weight percent of the polymeric material in the mixture.3. The method of claim 1 , wherein the physical blowing agent comprises nitrogen.4. The method of claim 1 , wherein the weight percentage of the physical blowing agent in the mixture is less than or equal to 1.0 percent of the weight of the polymeric material in the mixture.5. The method of claim 1 , wherein the physical blowing agent is supplied to the hopper at a pressure of less than 40 bar.6. The method of claim 1 , wherein the physical blowing agent is supplied to the hopper at a desired physical blowing agent pressure based claim 1 , at least in part claim 1 , on a desired weight percentage of blowing agent in the shot.7. The method of claim 1 , further comprising determining the desired physical blowing agent pressure claim 1 , in part claim 1 , from the volume of physical blowing agent in the hopper.8. The method of claim 1 , further comprising moving the screw in a downstream direction in the barrel to inject the shot into the mold.9. The method of claim 1 , wherein the article has a void volume of at least 10%.10. ...

Polymer-based foam compositions comprising inorganic particulate fillers

There is disclosed a polymer-based foam composition comprising a polymer and up to 20 wt.-% particles of one or more inorganic particulate materials, based on the total weight of the composition, wherein the one or more inorganic particulate materials comprise less than 20 wt.-% Al, calculated as Al 2 O 3 -content, According to one aspect, the one or more inorganic particulate materials comprise phyllosilicates. Also part of the present invention is the use of such polymer-based foam compositions and their method of production.

REVERSIBLY CROSS-LINKABLE RESIN

Reversibly cross-linkable foam is provided. The reversibly cross-linked foam includes a first polymeric material, at least one reversibly cross-linkable monomer polymerized with the first polymeric material, and at least one blowing agent. The reversibly cross-linkable co-polymeric foam is thermally stable at temperatures of at least 10 degrees higher than otherwise identical polymeric foam that does not include the reversibly cross-linkable agent polymerized with the first polymeric material. 1. A method of manufacturing extruded reversibly cross-linkable polymeric foam comprising: a first polymeric material and;', 'at least one reversibly cross-linkable agent polymerized with said first polymeric material, forming a reversibly cross-linkable copolymer;, 'introducing a foamable polymeric composition into an extruder to form a polymer melt, said foamable polymeric composition comprisinginjecting at least one blowing agent into said reversibly cross-linkable copolymer, forming an extrusion composition; andextruding said extrusion composition to produce a reversibly cross-linkable foam, wherein said reversibly cross-linkable foam is thermally stable at temperatures of at least 10 degrees Celsius higher than otherwise identical polymeric foam that does not include the cross-linking agent polymerized with the first polymeric material.2. The method of claim 1 , wherein said first polymeric material comprises an alkenyl aromatic polymer.3. The method of claim 2 , wherein said alkenyl aromatic polymer is derived from one or more of styrene claim 2 , a-methylstyrene claim 2 , ethylstyrene claim 2 , vinyl benzene claim 2 , vinyl toluene claim 2 , chlorostyrene claim 2 , and bromostyrene.4. The method of claim 1 , wherein said cross-linking agent comprises a metal-ligand complex ion.5. The method of claim 1 , wherein said metal-ligand complex ion includes a hydroxyl-containing (meth)acrylate.6. The method of claim 1 , wherein said ligand is at least one of a polyester (meth) ...

Polyamide resin foam shaped product and method of producing polyamide resin foam shaped product

Provided are a polyamide resin foam shaped product containing a polyamide resin and having a crystallinity X of 10% to 50% and a crystallite size D of 10 nm or more as calculated based on a peak having a smallest peak width in an X-ray diffraction profile of the foam shaped product, and a method of producing this polyamide resin foam shaped product.

Heat Transfer Compositions

A heat transfer composition comprising trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), carbon dioxide (R-744) and a third component selected from difluoromethane (R-32), 1,1-difluoroethane (R-152a), fluoroethane (R-161), 1,1,1,2-tetrafluoroethane (R-134a), propylene, propane and mixtures thereof. 1. A heat transfer composition comprising:trans-1,3,3,3-tetrafluoropropene (R-1234ze(E));carbon dioxide (R-744, CO2); anda third component selected from a group consisting of propylene, propane and mixtures thereof.2. A composition according to claim 1 , said composition comprising at least about 45% by weight of said R-1234ze(E).3. A composition according to claim 1 , said composition comprising greater than zero percent and up to about 12% by weight of said CO2.4. A composition according to claim 3 , said composition comprising from about 1 to about 10% by weight of said CO2.5. A composition according to claim 4 , said composition comprising about 2 to about 7% by weight of said CO2.6. A composition according to claim 1 , said composition comprising greater than zero percent and up to about 50% by weight of said third component.7. A composition according to claim 6 , wherein said third component is selected from a group consisting of propylene and propane claim 6 , said composition comprising from about 1 to about 10% by weight of said third component.8. A composition according to claim 7 , said composition comprising from about 2 to about 8% by weight of said third component.9. A composition according to claim 8 , said composition comprising from about 2 to about 10% by weight of said R-744.10. A composition according to claim 8 , said composition comprising from about 3 to about 6% by weight of said third component.11. A composition according to claim 10 , said composition comprising from about 2 to about 10% by weight of said R-744.12. A composition according to claim 1 , said composition consisting essentially of said R-1234ze(E) claim 1 , said R-744 and said third ...

POLYMERIC MATERIAL FOR CONTAINER

A formulation for producing a polymeric material including high-density polyethylene, a chemical blowing agent, and other optional components is described. 1. (canceled)2. A container comprising:a floor anda container wall extending away from the floor, and the container wall and the floor cooperate to form an interior product storage region,wherein the container wall is formed of a multi-layer material including a first layer of an insulative cellular non-aromatic polymeric material comprising high density polyethylene and a second layer arranged to locate the insulative cellular non-aromatic polymeric material between the second layer and the interior product-storage region.3. The container of claim 2 , wherein the insulative cellular non-aromatic polymeric material is extruded.4. The container of claim 3 , wherein second layer is extruded.5. The container of claim 4 , wherein the first layer and the second layer are extruded together.6. The container of claim 5 , wherein the container has a density less than about 0.4 g/cm.7. The container of claim 2 , wherein the second layer is about 5 mils to about 26 mils thick.8. The container of claim 7 , wherein the container has an average collapse force in a range of about 50 pounds-Force to about 400 pounds-Force.9. The container of claim 8 , wherein the second layer comprises high density polyethylene.10. The container of claim 9 , wherein the container survives top load forces of 115 pounds-Force to about 170 pounds-Force.11. The container of claim 10 , wherein the container has a density less than about 0.4 g/cm.12. The container of claim 2 , wherein insulative cellular non-aromatic polymeric material comprises regrind of previously prepared containers.13. The container of claim 12 , wherein the regrind is free of aromatic material.14. A method of producing a container claim 12 , the method comprising:extruding a first layer of an insulative cellular non-aromatic polymeric material comprising high density ...

CONTROLLED POLYMER FOAMING BY TUNING SURFACE INTERACTIONS BETWEEN BLOWING AGENTS AND MINERALS

A method of producing a polymer foam may include providing a polymer composition, introducing an alkaline earth metal silicate into the polymer composition, and foaming the polymer composition using a gas to form a polymer foam. A method of producing a polymer-matrix may include providing a polymer composition, nucleating the polymer composition with an alkaline earth metal silicate, and using a blowing agent to form a polymer foam from the polymer composition. The alkaline earth metal silicate may facilitate nucleation of the cells in the polymer foam. A polymer foam composition may include a polymer-based foam matrix and an alkaline earth metal silicate within a cell of the polymer-based foam matrix. 121-. (canceled)22. A polymer foam composition comprising:a polymer-based foam matrix; andan mineral nucleating agent within a cell of the polymer-based foam matrix.23. The polymer foam composition according to claim 22 , wherein the mineral nucleating agent comprises an alkaline earth metal silicate.24. The polymer foam composition according to claim 22 , wherein the mineral nucleating agent comprises at least one of magnesium oxysulfate claim 22 , kaolin claim 22 , talc claim 22 , chloritic talc claim 22 , perlite claim 22 , expanded milled perlite claim 22 , diatomaceous earth claim 22 , glass cullet claim 22 , feldspar claim 22 , nepheline syenite claim 22 , and bentonite.25. The polymer foam composition according to claim 22 , wherein the polymer-based foam matrix comprises at least one of a thermoplastic polymer matrix or a thermoplastic elastomer matrix.26. The polymer foam composition according to claim 22 , wherein the polymer-based foam matrix comprises at least one of a polystyrene matrix claim 22 , polypropylene matrix claim 22 , polyurethane matrix claim 22 , poly(ethyl vinyl acetate) (EVA) matrix claim 22 , polyethylene terephthalate (PET) matrix claim 22 , or copolymer matrices thereof.27. The polymer foam composition according to claim 22 , wherein a ...

POLYOL COMPONENT FOR THE PRODUCTION OF PUR FOAMS

A composition comprising 1. A composition comprising(a1) a polyether polyol,(a2) a polyolefin polyol, and(a3) a polyester polyol obtainable by epoxidation of an unsaturated fatty acid ester and subsequent ring-opening reaction with a compound containing active hydrogen.2. A composition according to comprising as component (a1) a linear or branched polyethylene oxide or polypropylene oxide.3. A composition according to comprising as component (a1) a hydroxy-terminated ethylene oxide/propylene oxide block copolymer.4. A composition according to comprising as component (a2) a poly-1 claim 1 ,3-butadiene polyol or polyisoprene polyol.5. A composition according to comprising as component (a3) a polyester polyol obtainable from a vegetable oil as unsaturated fatty acid ester.6. A composition according to additionally containing (a4) a polysiloxane-polyoxyalkylene block copolymer.7. A composition according to comprising claim 1 , based on the weight of the composition claim 1 ,(a1) 5-30% by weight of a polyether polyol,(a2) 30-70% by weight of a hydroxy-terminated polybutadiene or polyisoprene, and(a3) 10-50% by weight of a polyester polyol obtainable by epoxidation of an unsaturated fatty acid ester and subsequent ring-opening reaction with a compound containing active hydrogen.8. A composition containing{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(A) a composition comprising components (a1), (a2) and (a3) according to and (B) a polyisocyanate.'}9. A composition according to containing as component B a diphenylmethane diisocyanate.10. An encapsulation material for electrical components wherein the encapsulation material comprises the composition of .11. A process for producing a polyurethane foam by reacting a polyol component containing a composition according to with a polyisocyanate claim 1 , in the presence of a blowing agent.1214-. (canceled)16. An insulating material for pipes comprising a polyurethane foam prepared according to the process of .17. A hollow ...

CLOSED CELL FOAMS INCLUDING POLY-4-HYDROXYBUTYRATE AND COPOLYMERS THEREOF

Methods to produce substantially closed cell foams with densities less than 0.75 g/cm, and more preferably less than 0.5 g/cm, without substantial loss of the polymer's weight average molecular weight, have been developed. The closed cells foams have an open cell content of generally less than 50%, and more preferably an open cell content of less than 20%, and the cells have a maximum diameter of less than 5 mm. The foam may include poly-4-hydroxybutyrate or a copolymer thereof. Preferably, the foam is derived by heating a foam polymer formula to a temperature above the melt temperature of the polymer to form a melt polymer system, adding a blowing agent to produce a foamable melt, extruding the foamable melt through a die to a lower pressure to cause foaming, cooling of the foam, and solidification of the foam. These foam structures can be used for fabrication of medical products. 1. A foam composition comprising poly-4-hydroxybutyrate and copolymers thereof , wherein the foam contains closed cells.2. The structure of wherein the foam has an open cell content of less than 50%.3. The structure of wherein the foam has a density of less than 0.75 g/cm.4. The structure of wherein the cells of the foam have a maximum diameter of less than 5 mm.5. The structure of wherein the weight average molecular weight of the poly-4-hydroxybutyrate or copolymer thereof decreases less than 25% during the processing of the polymer or copolymer into the substantially closed cell foam.6. The structure of further comprising one or more of the following: nucleating agent claim 1 , plasticizing agent claim 1 , surfactant claim 1 , thermoplastic elastomer claim 1 , foaming aid claim 1 , dye claim 1 , compatibilizer claim 1 , bioactive agent claim 1 , contrast agent claim 1 , radiopaque agent claim 1 , radioactive marker claim 1 , radioactive substance claim 1 , resorbable polymer claim 1 , and non-degradable polymer.7. The structure of wherein the foam comprises one or more of the following ...

RESIN COMPOSITION FOAM AND METHOD FOR PRODUCING THE SAME

The present invention relates to a method for producing a resin composition foam comprising dissolving a supercritical fluid in a resin composition containing polytetrafluoroethylene and another resin other than polytetrafluoroethylene at a temperature equal to or higher than a glass transition point of the other resin, then foaming the resin composition by removing the supercritical fluid at a temperature lower than a temperature obtained by adding 15° C. to a thermal deformation starting temperature of the other resin, and subsequently cooling. In addition, the present invention relates to a resin composition foam, wherein the resin composition foam has a pore size of less than 50 μm, and the resin composition foam is any one of an open cell, a closed cell and a monolith type. 1. A method for producing a resin composition foam comprising:dissolving a supercritical fluid in a resin composition comprising polytetrafluoroethylene and another resin other than polytetrafluoroethylene at a temperature equal to or higher than a glass transition point of the other resin, thenfoaming the resin composition by removing the supercritical fluid at a temperature lower than a temperature obtained by adding 15° C. to a thermal deformation starting temperature of the other resin, and subsequentlycooling the resin composition.2. A method for producing a resin composition foam comprising:dissolving a supercritical fluid in a resin composition comprising polytetrafluoroethylene and another resin other than polytetrafluoroethylene at a temperature lower than a glass transition point of the other resin over a time longer than 30 minutes, thenfoaming the resin composition by removing the supercritical fluid at a temperature lower than a temperature obtained by adding 15° C. to a thermal deformation starting temperature of the other resin, and subsequentlycooling the resin composition.3. The method of claim 1 , wherein the resin composition comprises a foam regulator (C).4. The method of ...

Polar Polystyrene Copolymers for Enhanced Foaming

A method of making a foamable polystyrene composition includes combining a styrenic monomer and a co-monomer containing a polar functional group to obtain a mixture, subjecting the mixture to polymerization to obtain a styrenic co-polymer, and combining the styrenic co-polymer with a blowing agent in a foaming process to obtain foamed articles. 121-. (canceled)22. A polystyrene composition comprising:a styrenic co-polymer resulting from polymerization of a reaction mixture comprising a styrenic monomer and polyvinyl acetate; anda blowing agent.23. The foamable polystyrene composition of claim 22 , wherein the blowing agent comprises CO.24. The foamable polystyrene composition of claim 22 , wherein the blowing agent is present in the styrenic co-polymer in a weight proportion ranging from 1 to 30 parts per 100 parts of styrenic material.25. The foamable polystyrene composition of claim 22 , wherein the polyvinyl acetate is present in an amount ranging from 0.5 to 20 wt % of the styrenic co-polymer.26. A polystyrene foam obtained from the foamable polystyrene composition of .27. An article made from the polystyrene foam of .28. A method comprising:combining a styrene monomer and polyvinyl acetate to obtain a reaction mixturesubjecting the reaction mixture to polymerization conditions to obtain a styrenic co-polymer; andcombining the styrenic co-polymer with a blowing agent to obtain a foamable blend.29. A polystyrene composition comprising:a styrenic co-polymer resulting from polymerization of a reaction mixture comprising a styrenic monomer and from 0.5 to 20 wt % of a co-monomer having a polar functional group, wherein the co-monomer having the polar functional group is selected from a group consisting of fluorinated(meth)acrylate, glycidyl(meth)acrylate, and hexafluorobutyl acrylate; and{'sub': 2', '2, 'a blowing agent comprising CO, wherein the styrenic co-polymer exhibits increased solubility of COin comparison to a styrene polymer that is not modified with a co- ...

Particle foams consisting of an aromatic polyester-polyurethane multi-block copolymer

Foamed pellets contain a block copolymer. The block copolymer is obtained or obtainable by a process involving the reaction of an aromatic polyester (PE-1) with an isocyanate composition (IC), containing at least one diisocyanate, and with a polyol composition (PC). The polyol composition (PC) contains at least one aliphatic polyol (P1) having a number-average molecular weight ≥500 g/mol. A process can be used for the production of such foamed pellets. The foamed pellets can be used for the production of a molded body. 117-. (canceled)18. Foamed pellets comprising a block copolymer , wherein the block copolymer is obtained or obtainable by a process comprising:(a) providing an aromatic polyester (PE-1); and(b) reacting the aromatic polyester (PE-1) with an isocyanate composition (IC) comprising at least one diisocyanate, and with a polyol composition (PC),wherein the polyol composition (PC) comprises at least one aliphatic polyol (P1) having a number-average molecular weight ≥500 g/mol and a diol (D1) having a number-average molecular weight <500 g/mol,wherein the aromatic polyester (PE-1) is obtainable or obtained by reacting at least one aromatic polyester haying a melting point in the range from 160 to 350° C. and at least one diol (D2), at a temperature of greater than 200° C., andwherein an average diameter of beads of the foamed pellets is between 0.2 to 20 mm.19. The foamed pellets according to claim 18 , wherein the reaction to obtain the aromatic polyester (PE-1) is continuous.20. The foamed pellets according to claim 18 , wherein the reaction to obtain the aromatic polyester (PE-1) is effected in an extruder.21. The foamed pellets according to claim 18 , wherein the at least one aromatic polyester is selected from the group consisting of polybutylene terephthalate (PBT) claim 18 , polyethylene terephthalate (PET) claim 18 , and polyethylene naphthalate (PEN).22. The foamed pellets according to claim 18 , wherein the diol (D1) is selected from the group ...

FOAM

The invention relates to a foam comprising thermoplastic copolyester elastomer in an amount of at least 60 wt % with respect to the total weight of the foam, wherein the thermoplastic copolyester elastomer has a number average molecular weight (Mn) of at least 34000 g/mol and a shore D hardness measured at 3 s of between 28 to 50. The invention further relates to a process for preparing the foam and articles comprising the foam. 1. Foam comprising thermoplastic copolyester elastomer in an amount of at least 60 wt % with respect to the total weight of the foam , wherein the thermoplastic copolyester elastomer has a number average molecular weight (Mn) of at least 34000 g/mol and a shore D hardness measured at 3 s of between 28 to 50.2. Foam according to claim 1 , wherein the thermoplastic copolyester elastomer has a Mw/Mn of less than 2.7.3. Foam according to claim 1 , wherein the shore D hardness is between 30 and 45.4. Foam according to claim 1 , wherein the thermoplastic copolyester elastomer comprises hard segments chosen from ethylene terephthalate (PET) claim 1 , propylene terephthalate (PPT) claim 1 , butylene terephthalate (PBT) claim 1 , polybutylene isophthalate (PBI) claim 1 , polyethylene isophthalate (PEI) claim 1 , polyethelyene naphthalate (PEN) claim 1 , polybutylene naphthalate (PBN) claim 1 , and polypropylene naphthalate (PPN) and combinations thereof.5. Foam according to claim 4 , wherein the thermoplastic copolyester elastomer comprises hard segments being PBT optionally in combination with PBI.6. Foam according to claim 1 , wherein the thermoplastic copolyester elastomer comprises soft segments being polytetramethylene oxide (PTMO) claim 1 , polyethylene oxide (PEO) claim 1 , polypropylene oxide (PPO) claim 1 , block copolymers of poly(ethylene oxide) and poly(propylene oxide) claim 1 , linear aliphatic polycarbonates claim 1 , polybutylene adipate (PB A) and derivates of dimer fatty acids or dimer fatty acid diols claim 1 , linear aliphatic ...

FOAMED COMPOSITION

The invention relates to a foamed composition comprising a thermoplastic copolyester elastomer, wherein the foamed composition has a relative solution viscosity of at least 4.1 as measured according to ISO 1628-5:2015 and wherein the thermoplastic copolyester elastomer comprises hard segments built up from polyester repeating units derived from at least one aliphatic diol and at least one aromatic dicarboxylic acid or an ester thereof and soft segments being polytetramethylene oxide. The invention also relates to a process for preparing the foamed composition. 1. Foamed composition comprising a thermoplastic copolyester elastomer , wherein the foamed composition has a relative solution viscosity of at least 4.1 as measured according to ISO 1628-5:2015 and wherein the thermoplastic copolyester elastomer comprises hard segments built up from polyester repeating units derived from at least one aliphatic diol and at least one aromatic dicarboxylic acid or an ester thereof and soft segments being polytetramethylene oxide.2. Foamed composition according to claim 1 , wherein the hard segments are chosen from the group consisting of ethylene terephthalate (PET) claim 1 , propylene terephthalate (PPT) claim 1 , butylene terephthalate (PBT) claim 1 , polyethylene bibenzoate claim 1 , polyethelyene naphatalate (PEN) claim 1 , polybutylene bibenzoate claim 1 , polybutylene naphatalate claim 1 , polypropylene bibenzoate and polypropylene naphatalate and combinations thereof.3. Foamed composition according to claim 1 , wherein the hard segment is chosen from PBT or PET.4. Foamed composition according to claim 1 , wherein the thermoplastic copolyester elastomer is present in an amount of at least 70 wt % claim 1 , wherein wt % is with respect to the total weight of the composition.5. Foamed composition according to claim 1 , wherein the foamed composition further comprises a plasticizer in an amount of at most 30 wt % with respect to the total weight of foamed composition claim 1 ...

BIODEGRADABLE FOAMED MATERIAL

A biodegradable foamed material is formed from corn meal, corn flour and distillers grains, especially dried distillers grains with solubles (DDGS). The foamed material has a low density and is cheaper to produce, has a more pleasing color and may be formed faster and into larger pellets than packaging material formed from corn meal without corn flour and distillers grains. The foamed material is useful in packaging, as insulation and the like. 1. A biodegradable foamed material formed from corn meal , corn flour and distillers grains.2. The material according to claim 1 , wherein the distillers grains comprises dried distillers grains with solubles (DDGS).3. The material according to claim 2 , formed with 25-75 wt % corn meal claim 2 , 0.5-15 wt % corn flour and 10-45 wt % DDGS claim 2 , all weights based on total weight of corn meal claim 2 , corn flour and DDGS.4. The material according to claim 2 , formed with 40-60 wt % corn meal claim 2 , 7-15 wt % corn flour and 30-45 wt % DDGS claim 2 , all weights based on total weight of corn meal claim 2 , corn flour and DDGS.5. The material according to claim 2 , formed with 50 wt % corn meal claim 2 , 10 wt % corn flour and 40 wt % DDGS claim 2 , all weights based on total weight of corn meal claim 2 , corn flour and DDGS.6. The material according to having a density 1.05 times or more less than density of a material formed from corn meal without corn flour and distillers grains.7. The material according to which is a biodegradable foamed pellet.8. The material according to having a moisture content in a range of 1-5 wt % based on weight of the material.9. A process for producing biodegradable foamed material claim 2 , comprising extruding a mixture of corn meal claim 2 , corn flour and distillers grains in an extruder at a temperature in a range of 125° C. to 165° C. to produce an extruded foamed material.10. The material according to claim 9 , wherein the distillers grains comprises dried distillers grains with ...

Polypropylene foams and processes of making

The present disclosure provides a linear polypropylene foam with, for example, low density and/or high expansion ratio, said linear polypropylene foam comprising at least one polypropylene, at least one alpha nucleating agent, and at least one beta nucleating agent. The present disclosure also provides compositions and processes for making said linear polypropylene foam.

Antistatic non-crosslinked foamed polyethylene resin particles and molded non-crosslinked foamed polyethylene resin body

Provided are non-crosslinked foamed polyethylene resin particles that have a bulk density BD of 10 g/L or more and 100 g/L or less and are obtained by foaming polyethylene resin particles containing an antistatic agent in an amount of 0.1 part by weight or more and 3 parts by weight or less with respect to 100 parts by weight of a polyethylene resin and having a density of 0.920 g/cm 3 or more and less than 0.940 g/cm 3 , and the non-crosslinked foamed polyethylene resin particles have a shrinkage ratio of 3% or more and 30% or less determined in accordance with Formula (1). The non-crosslinked foamed polyethylene resin particles can simply afford an antistatic molded non-crosslinked foamed polyethylene resin body that has a small shrinkage ratio with respect to mold dimension, is deformed in a small degree, and has good surface stretch.

Modified starch compositions, starch composite foam materials and method for preparing the starch composite foam material

The present disclosure provides a modified starch composition. The modified starch composition includes starch with a terminal siloxane having 100 parts by weight, water having 30-70 parts by weight, and a polyol having 5-35 parts by weight. The present disclosure also provides a starch composite foam material and method for preparing the same.

MICROWAVE MOLDED ARTICLE AND METHOD THEREOF

The present invention disclosures microwave molded articles, including molded articles having portions with different hardness; molded articles having sharp flanges; molded articles having portions with different colors; molded articles with designed pattern; molded articles made of plastic particles with hollow tubes; molded articles made of plastic and rubber particles composition; molded articles made of plastic particles in combination of pre-molded rubber blocks; a molded article made of plastic particles in combination of textile; and a molded article made of non-spherical type plastic particles. The manufacturing methods for the above molded articles are also provided. 1. A microwave molded article , comprising a plurality of particles bonded by microwave irradiation , the plurality of particles being foamed thermoplastic polyurethane , the plurality of particles including a plurality of first foamed particles and a plurality of second foamed particles having a different hardness from that of the first foamed particles.2. The microwave molded article according to claim 1 , wherein the microwave molded article comprises a first section formed from the plurality of first foamed particles bonded by microwave irradiation and a second section formed from the plurality of second foamed particles bonded by microwave irradiation.3. The microwave molded article according to claim 1 , wherein the microwave molded article is formed from the plurality of first foamed particles and the plurality of second foamed particles that are randomly dispersed claim 1 , mixed claim 1 , and bonded by microwave irradiation.4. The microwave molded article according to claim 1 , wherein the microwave molded article further comprises an outline on an outer surface of the microwave molded article claim 1 , and the outline keeps a portion of the shape of the particles as shown before the microwave irradiation.5. The microwave molded article according to claim 1 , wherein the microwave ...

Method of microcellular foam molding

A method of microcellular foam molding an article is provided with filling a mold with a polyolefin compound; forming crosslinks in the mold to obtain a crosslinked mold; dissolving a supercritical fluid into the crosslinked mold under a predetermined pressure and at a predetermined temperature for a predetermined period of time to obtain a second mold configured to allow the supercritical fluid to effuse through; and heating the second mold at a second predetermine temperature for a predetermined foaming time until a foamed article is finished in the second mold. A second embodiment involves using elastomers as foaming materials is also provided.

METHOD OF PRODUCING POLYURETHANE FOAM FOR COSMETIC APPLICATION AND POLYURETHANE FOAM FOR COSMETIC APPLICATION

A method of producing a polyurethane foam for cosmetic application by machine foaming using a polyol component, a polyisocyanate component, a catalyst, a foam stabilizer and an inert gas is disclosed. The polyol component used contains 30 mass % or more of bifunctional polyol with a ratio of primary hydroxyl groups to terminal hydroxyl groups of 70% or more and a number average molecular weight of 1000 to 3000 and has an average ratio of primary hydroxyl groups to terminal hydroxyl groups in the whole polyol component of 50% or more. The polyisocyanate component is used at an isocyanate index ranging from 85 to 130. A supply of the inert gas in terms of a volume at 0° C. and 1 atm is adjusted to two to ten times a total supply of liquid materials of the polyol component, polyisocyanate component, catalyst and foam stabilizer. 1. A method of producing a polyurethane foam for cosmetic application by machine foaming using a polyol component , a polyisocyanate component , a catalyst , a foam stabilizer and an inert gas , wherein:the polyol component used contains 30 mass % or more of bifunctional polyol with a ratio of primary hydroxyl groups to terminal hydroxyl groups of 70% or more and a number average molecular weight of 1000 to 3000 and has an average ratio of primary hydroxyl groups to terminal hydroxyl groups in the whole polyol component of 50% or more;the polyisocyanate component is used at an isocyanate index ranging from 85 to 130; anda supply of the inert gas in terms of a volume at 0° C. and 1 atm is adjusted to two to ten times a total supply of liquid materials of the polyol component, polyisocyanate component, catalyst and foam stabilizer.2. The method according to claim 1 , wherein addition-polymerization of polypropylene oxide to an initiator in presence of an acid catalyst prepares a bifunctional polypropylene glycol with a ratio of primary hydroxyl groups to terminal hydroxyl groups of 40% or more claim 1 , and further addition of ethylene oxide ...

TO ENHANCE THE THERMAL INSULATION OF POLYMERIC FOAM BY REDUCING CELL ANISOTROPIC RATIO AND THE METHOD FOR PRODUCTION THEREOF

This invention relates to foam insulating products, particularly extruded polystyrene foam, with increasing the cell orientation and reducing cell anisotropic ratio, as well as the process method for making the products thereof for improving the insulating properties and for reducing the manufacturing cost of the foam products. Alternatively, foam insulating products having increased cell compressive strength may be made by decreasing the cell orientation and increasing the cell anisotropic ratio. 119-. (canceled)20. A method of manipulating the cell orientation ratio in the x/z direction of a rigid polymer foam material , the method comprising:providing a device capable of producing a rigid polymer foam material;introducing a thermoplastic polymer resin to said device;incorporating one or more blowing agents into said thermoplastic polymer resin to form a gel; andextruding the gel through a die gap of the device to form a rigid polymer foam material having rigid foam cells;wherein said rigid foam cells have a cell orientation ratio in the x/z direction of from about 1.03 to about 2.0, wherein the x-direction is defined as the extruded direction of the polymer foam material and wherein said z-direction is defined as the vertical thickness direction of the polymer foam material.21. The method of claim 20 , wherein said device comprises an extruder claim 20 , a mixer claim 20 , or a blender.22. The method of claim 20 , wherein said thermoplastic polymer resin comprises an alkenyl aromatic polymer resin.23. The method of claim 20 , wherein the step of incorporating one or more blowing agents comprises incorporating one or more blowing agents into said thermoplastic polymer resin at a first pressure claim 20 , said first pressure sufficient to prevent prefoaming of the gel.24. The method of claim 23 , wherein said first pressure is from about 40 bars to about 70 bars.25. The method of claim 23 , wherein the extrusion step includes extruding the gel to a region of lower ...

Foam molded body

An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.

PROCESS FOR PRODUCING FOAMS BASED ON THERMOPLASTIC POLYURETHANES

A process for producing foamed thermoplastic polyurethane particles comprises the steps of a) melting a thermoplastic polyurethane in a first extruder (E), b) injecting a gaseous blowing agent in a second extruder (E), c) impregnating the gaseous blowing agent homogeneously into the thermoplastic polyurethane melt in a third extruder (E), d) extruding the impregnated thermoplastic polyurethane melt through a die plate and granulating the melt in an underwater granulation device under temperature and pressure conditions to form foamed thermoplastic polyurethane particles. 1. A process for producing foamed thermoplastic polyurethane particles , the process comprising:{'b': '1', 'a) melting a thermoplastic polyurethane in a first extruder E,'}{'b': '2', 'b) injecting a gaseous blowing agent in a second extruder E,'}{'b': '3', 'c) impregnating the gaseous blowing agent homogeneously into the thermoplastic pol-yurethane melt in a third extruder E, and'}d) extruding the impregnated thermoplastic polyurethane melt through a die plate and granulating the melt in an underwater granulation device under temperature and pressure conditions to form foamed thermoplastic polyurethane particles.2. The process according to claim 1 , wherein a bulk density of the foamed thermoplastic polyurethane particles formed in step d) ranges from 30 to 250 kg/m3.3. The process according to claim 1 , wherein the gaseous blowing agent comprises CO2 claim 1 , N2 claim 1 , or a combination of CO2 and N2.4132. The process according to claim 1 , wherein a single screw extruder is used as the first extruder E and the third extruder E claim 1 , and a twin extruder is used as the second Extruder E.5. The process according to claim 1 , wherein the water in the underwater granulation device has a pressure in the range from 1 to 20 bar and a temperature in the range from 10 to 50° C. This invention relates to a process for production of expanded pellets from a polymer melt comprising a blowing agent. ...

PROCESS FOR DYEING AND FOAMING THERMOPLASTIC POLYURETHANE

A process for the preparation of coloured and expanded thermoplastic polyurethane (coloured ETPU) material which comprises the following steps: 1. A process for the preparation of coloured and expanded thermoplastic polyurethane material which comprises the following steps:a) providing thermoplastic polyurethane material and at least one gaseous fluid wherein the melting temperature of the thermoplastic polyurethane material is above the supercritical temperature of the at least one gaseous fluid;b) placing the thermoplastic polyurethane material in an autoclave together with a colorant and/or a fluorescent whitening agent, wherein the colorant is selected from at least one of a disperse dye, an acid dye and a pigment;c) increasing the pressure in the autoclave by introducing the at least one gaseous fluid at a temperature below the melting point of the thermoplastic polyurethane material and at least above the supercritical temperature of the at least one gaseous fluid at the applied pressure;d) allowing the non-expanded thermoplastic polyurethane material to saturate; ande) decreasing the pressure in the autoclave down to ambient pressure at a temperature between the melting temperature and the glass transition temperature of the thermoplastic polyurethane material at such a rate that the thermoplastic polyurethane material expands to obtain the coloured expanded thermoplastic polyurethane material; andf) removing the coloured expanded thermoplastic polyurethane material from the autoclave.2. The process according to claim 1 , wherein the at least one gaseous fluid comprises CO.3. The process according to claim 1 , wherein the at least one gaseous fluid is selected from COand the saturation step is performed at a pressure in the range of 73-500 bar and at a temperature below the melting point of the thermoplastic polyurethane material and at least above the supercritical temperature of supercritical CO(SC CO) at the applied pressure.4. The process according to ...

Copolymer Foam With Polyamide Blocks And Polyether Blocks

The invention relates to a non-cross-linked copolymer foam with polyamide blocks and polyether blocks, wherein: the polyamide blocks of the copolymer have an average molar mass of from 200 to 1,500 g/mol; the polyether blocks of the copolymer have an average molar mass of from 800 to 2,500 g/mol; and the weight ratio of the polyamide blocks to the polyether blocks of the copolymer is from 0.1 to 0.9. The invention also relates to a method for manufacturing said foam and items manufactured from said foam. 112.-. (canceled)13. A non-crosslinked polyamide polyether block copolymer foam , comprising:polyamide blocks having a number average molecular weight of from 200 to 1500 g/mol; andpolyether blocks having a number average molecular weight of from 800 to 2500 g/mol,wherein a mass ratio of the polyamide blocks relative to the polyether blocks of the copolymer is from 0.1 to 0.9.14. The foam of claim 13 , wherein:the polyamide blocks have a number average molecular weight of from 400 to 1000 g/mol; andthe polyether blocks have a number average molecular weight of 1000 to 2000 g/mol,wherein the mass ratio of the polyamide blocks relative to the polyether blocks of the copolymer is from 0.3 to 0.6.15. The foam of claim 13 , wherein:the polyamide blocks have a number average molecular weight of from 600 to 850 g/mol; andthe polyether blocks have a number average molecular weight of 1000 to 2000 g/mol,wherein the mass ratio of the polyamide blocks relative to the polyether blocks of the copolymer is from 0.3 to 0.6.16. The foam of claim 13 , wherein the polyamide blocks of the copolymer include at least one member selected from the group consisting of polyamide 6 claim 13 , polyamide 11 claim 13 , polyamide 12 claim 13 , polyamide 6.10 claim 13 , polyamide 10.10 claim 13 , and polyamide 10.12.17. The foam of claim 14 , wherein the polyamide blocks of the copolymer include at least one member selected from the group consisting of polyamide 6 claim 14 , polyamide 11 claim 14 ...

FOAMED THERMOPLASTIC POLYURETHANE AND MICROWAVE MOLDED ARTICLE THEREOF

A foamable composition for preparing foamed thermoplastic polyurethane, and microwave molded articles thereof are provided. The foamable composition comprises non-foamed thermoplastic polyurethane particles and a foaming agent, wherein the non-foamed thermoplastic polyurethane particles have a viscosity between 10,000 poise and 40,000 poise measured at 170° C. according to JISK 7311 test method. 1. A foamable composition for preparing foamed thermoplastic polyurethane , comprising non-foamed thermoplastic polyurethane particles and a foaming agent , wherein the non-foamed thermoplastic polyurethane particles have a viscosity between 10 ,000 poise and 40 ,000 poise measured at 170° C. according to JISK 7311 test method.2. The foamable composition of claim 1 , wherein the viscosity of the non-foamed thermoplastic polyurethane particles is between 15 claim 1 ,000 poise and 35 claim 1 ,000 poise.3. The foamable composition of claim 1 , wherein the non-foamed thermoplastic polyurethane particles have a particle size between 2.5 mm and 4.5 mm.4. The foamable composition of claim 1 , wherein the non-foamed thermoplastic polyurethane particles have a hardness of 40 Shore A scale to 64 Shore D scale.5. The foamable composition of claim 1 , wherein the non-foamed thermoplastic polyurethane particles have a density between 1.0 g/cmand 1.25 g/cm.6. The foamable composition of claim 1 , comprising 100 parts by weight of the non-foamed thermoplastic polyurethane particles and 5 to 25 parts by weight of the foaming agent.7. The foamable composition of claim 1 , comprising 100 parts by weight of the non-foamed thermoplastic polyurethane particles and 5 to 20 parts by weight of the foaming agent.8. The foamable composition of claim 1 , wherein the foaming agent is composed of expandable microspheres claim 1 , carbon dioxide (CO) or hydrocarbons having 4 to 10 carbon atoms.9. The foamable composition of claim 1 , further comprising 0.1 to 5 parts by weight of talc powder.10. The ...

Process for preparing a porous material

The present invention is directed to a process for preparing a porous material, at least comprising the steps of providing a gel comprising a solvent (S), wherein the solvent (S) has a volume (V1), pressurizing the gel with carbon dioxide at a temperature and a pressure at which carbon dioxide solubilizes in the solvent (S) forming gas-expanded liquid (EL), wherein the gas-expanded liquid (EL) has a volume (V2) and (V2) is greater than (V1); removing supernatant liquid, and drying the gel. The present invention further is directed to the porous material obtained or obtainable according to the process as such as the use of the porous material according to the invention in particular for medical, biomedical and pharmaceutical applications or for thermal insulation.

FOAM COMPOSITIONS AND USES THEREOF

Components for articles of footwear and athletic equipment including a foam are provided. The foam portion of the components and articles include a composition which includes a thermoplastic copolyester, the composition having a foam structure. A polymer layer is provided on at least on surface of the foam portion. The polymer layer can control or reduce the water uptake of the foam portion. Methods of making the compositions, foams, and components are provided, as well as methods of making an article of footwear including one of the foam components. In some aspects, the foams and foam components can be made by injection molding, or injection molding followed by compression molding. 1. A cushioning element for an article of footwear , the cushioning element comprising:a first foam, wherein the first foam is a thermoplastic multicellular foam having an open cell foam microstructure, an average cell size of from about 50 micrometers to about 500 micrometers, and a specific gravity of about 0.15 to about 0.25;wherein the first foam compositionally comprises a first thermoplastic composition comprising one or more copolyesters;wherein the first foam is the physically foamed product of a single-phase solution of a supercritical fluid and the first thermoplastic composition in a molten state; andwherein the first thermoplastic composition of the first foam is free or essentially free of nucleating agents, or is free or essentially free of fillers, or is free or essentially free of both nucleating agents and fillers.2. The cushioning element of claim 1 , wherein the cushioning element is produced by the method comprising:forming a single-phase solution of the first thermoplastic composition comprising the one or more thermoplastic copolyesters and the supercritical fluid, wherein the first thermoplastic composition is molten in the single-phase solution;injecting the single-phase solution into a mold cavity, the single-phase solution having an injection temperature during ...

Foam compositions and uses thereof

Components for articles of footwear and athletic equipment including a foam are provided. The foam portion of the components and articles include a composition which includes a thermoplastic copolyester, the composition having a foam structure. A polymer layer is provided on at least on surface of the foam portion. The polymer layer can control or reduce the water uptake of the foam portion. Methods of making the compositions, foams, and components are provided, as well as methods of making an article of footwear including one of the foam components. In some aspects, the foams and foam components can be made by injection molding, or injection molding followed by compression molding.

METHOD FOR MAKING A THERMOPLASTIC FOAM ARTICLE

A variety of foams and foam components are provided, including foam components for articles of footwear and athletic equipment. The articles include a composition having a foam structure, wherein the composition includes a thermoplastic copolyester elastomer comprising: (a) a plurality of first segments, each first segment derived from a dihydroxy-terminated polydiol; (b) a plurality of second segments, each second segment derived from a diol; and (c) a plurality of third segments, each third segment derived from an aromatic dicarboxylic acid. Methods of making the compositions and foams are provided, as well as methods of making an article of footwear including at least one of the foam components. In some aspects, the foams and foam components can be made by extrusion or injection molding to foam the polymeric composition, or extrusion or injection molding to foam the polymeric composition followed by compression molding of the foam. 1. A method for making a thermoplastic foam article having a density of from 0.1 to 0.35 g/cm , the method comprising:forming a mixture of molten polymeric material comprising a thermoplastic copolyester elastomer, and a physical blowing agent;injecting the mixture into a mold cavity;foaming the molten polymeric material, thereby forming a foamed molten polymeric material;solidifying the foamed molten polymeric material, thereby forming a thermoplastic foam article having a multicellular foam structure; andremoving the thermoplastic foam article from the mold cavity;wherein the foaming is conducted at a foaming temperature; and the foaming temperature is from the melting temperature of the thermoplastic copolyester elastomer to 50 degrees C. above the tail temperature of the thermoplastic copolyester elastomer;and wherein the forming of the mixture of the molten polymeric material and the physical blowing agent comprises adding the physical blowing agent to the molten polymer material and forming a single phase solution of the physical ...

FOAM COMPOSITIONS AND USES THEREOF

Components for articles of footwear and athletic equipment including a foam are provided. The foam portion of the components and articles include a composition which includes a thermoplastic copolyester, the composition having a foam structure. A polymer layer is provided on at least on surface of the foam portion. The polymer layer can control or reduce the water uptake of the foam portion. Methods of making the compositions, foams, and components are provided, as well as methods of making an article of footwear including one of the foam components. In some aspects, the foams and foam components can be made by injection molding, or injection molding followed by compression molding. 1. A method for making a foam midsole for an article of footwear , the method comprising:forming a mixture of a molten thermoplastic copolyester composition comprising at least one thermoplastic copolyester elastomer and a physical blowing agent;injecting the mixture into a mold cavity;foaming the molten thermoplastic copolyester composition in the mold cavity, thereby forming a foamed molten thermoplastic copolyester composition;solidifying the foamed molten thermoplastic copolyester composition, thereby forming a molded foam midsole having an open cell foam structure and compositionally comprising a thermoplastic copolyester composition; andremoving the molded foam midsole from the mold cavity; (a) a plurality of first segments, each first segment derived from a dihydroxy-terminated polydiol;', '(b) a plurality of second segments, each second segment derived from a diol; and', '(c) a plurality of third segments, each third segment derived from an aromatic dicarboxylic acid., 'wherein the thermoplastic copolyester composition comprises a thermoplastic copolyester elastomer including'}4. The method of claim 3 , wherein y is an integer having a value of 1 claim 3 , 2 claim 3 , 3 claim 3 , 4 claim 3 , or 5.5. The method of claim 3 , wherein R is hydrogen; wherein R is methyl; wherein R is ...

Advanced Thermal Insulation by Pore Morphology Control in Foaming

A foam extrusion slot die is provided, comprising a plurality of parallel dividers extending transversely across the slot, wherein the plurality of dividers define a plurality of adjacent rectangular slit openings, each having a length extending perpendicularly across the lateral length of the slot die. An article of manufacture is provided, comprising a polymer material system with at least 95% porosity comprising greater than 10%>asymmetrical pores. A method for an article of manufacture is provided comprising: extruding polymer material through an extruder die opening having an output orifice partitioned by a plurality of parallel dividers defining a plurality of adjacent slit openings each having a vertical height greater than a lateral width.

METHODS OF MANUFACTURING EXTRUDED POLYSTYRENE FOAMS USING CARBON DIOXIDE AS A MAJOR BLOWING AGENT

A composition and method for making extruded polystyrene (XPS) foam is provided. The composition includes carbon dioxide as a major blowing agent to achieve an XPS foam having an improved thermal insulation performance. 1. A foamed insulation product comprising: polystyrene;', 'a blowing agent composition comprising at least 50 molar % carbon dioxide and at least one co-blowing agent selected from the group consisting of hydrofluorocarbons, HFO-1234ze, HFO-1336mzz, and combinations thereof, and', 'at least one infrared attenuating agent;, 'a polymeric foam composition comprisingwherein the foamed insulation product has an insulation R-value per inch of between 4 and 7.2. The foamed insulation product of claim 1 , wherein the foamed insulation product has an insulation R-value per inch of 5.3. The foamed insulation product of claim 2 , wherein the foamed insulation product has an insulation R-value per inch of 5 after 60 days aging.4. The foamed insulation product of claim 1 , wherein the foamed insulation product has the same insulation R-value per inch after 60 days aging as at the time of manufacture.5. The foamed insulation product of claim 1 , wherein the foamed insulation product is closed cell.6. The foamed insulation product of claim 1 , wherein the foamed insulation product is monomodal.7. The foamed insulation product of claim 1 , wherein the foamed insulation product has a density of less than 5 lbs/ft.8. The foamed insulation product of claim 1 , wherein the foamed insulation product has a density of from 1.3 to 4.5 lbs/ft.9. The foamed insulation product of claim 1 , wherein the foamed insulation product has a compressive strength between 6 and 120 psi.10. A closed cell claim 1 , extruded polystyrene foamed insulation product comprising: polystyrene;', 'a blowing agent composition comprising at least 50 molar % carbon dioxide and at least one co-blowing agent selected from the group consisting of hydrofluorocarbons, HFO-1234ze, HFO-1336mzz, and ...

Superabsorbent polymer production using certain carriers

A process is described for production of superabsorbents, comprising conveying steps for transporting the particulate material obtained, with use of a conveying machine from the group of the mechanical continuous conveyors with traction means in at least one of the conveying steps. Conveying machines used with preference are tubular drag conveyors and/or bucket conveyors.

Method and device for directly preparing foamed polylactic acid (pla) product from pla melt

A method for directly preparing a foamed polylactic acid (PLA) product from a PLA melt includes PLA melt preparation, feeding, and two-stage extrusion. In the two-stage extrusion, a pressure at an outlet of a first-stage twin-screw extruder is 15 MPa to 17 MPa, a PLA melt is fed at a rate of 250 kg/h, a foaming additive is fed at a rate of 7.5 kg/h to 10 kg/h, and a foaming gas is fed at a rate of 2.8 L/h to 7.5 L/h. The method can ensure both foamability and quality of a material and reduce more than ⅓ of energy consumption; and an obtained product has an adjustable foaming rate of 3 to 25, a crystallinity of 40.3% to 48.5%, a tensile strength of 8.7 MPa to 19.6 MPa, and an apparent density of 0.05 g/cm3 to 0.4 g/cm3.

Porous carbon-containing compounds as water carriers and cell size controlling agents for polymeric foams

Polymeric foam and polymeric foam products that contain a foamable polymer material, at least one blowing agent, activated carbon, and water are provided. The activated carbon acts as both a water absorbent and carrier for the water. The activated carbon is able to control and increase cell size even in the presence of carbon dioxide, HFCs, and/or infrared attenuating agents. Additionally, the activated carbon permits a desired amount of water to be introduced into the polymer melt. By controlling the amount of activated carbon and its water content during an extrusion process, a broad range of cell sizes can be obtained in the extruded product. In exemplary embodiments, the activated carbon is added to a primacy extruder and water is directly injected into a secondary extruder. Alternatively, the activated carbon is compounded with a polymer resin, pre-hydrated by conditioning or steam impregnation, and added to a primary or secondary extruder.

PROCESS FOR PRODUCING POROUS ALGINATE-BASED AEROGELS

The present invention relates to a process for preparing a porous material, at least comprising the steps of providing a mixture (I) comprising a water soluble polysaccharide, at least one compound suitable to react as cross-linker for the polysaccharide or to release a cross-linker for the polysaccharide, and water, and preparing a gel (A) comprising exposing mixture (I) to carbon dioxide at a pressure in the range of from 20 to 100 bar for a time sufficient to form a gel (A), and depressurizing the gel (A). Gel (A) subsequently is exposed to a water miscible solvent (L) to obtain a gel (B), which is dried. The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material, for cosmetic applications, for biomedical applications or for pharmaceutical applications. 1: A process for preparing a porous material , comprising: (i) a water soluble polysaccharide,', '(ii) a compound suitable to react as cross-linker for the polysaccharide or to release a cross-linker for the polysaccharide, and', '(iii) water;, 'a) providing a mixture (I) comprising'} b1) exposing the mixture (I) to carbon dioxide at a pressure in a range of from 20 to 100 bar for a time sufficient to form a gel (A), and', 'b2) depressurizing the gel (A);, 'b) preparing a gel (A) by a process comprising'}c) exposing the gel (A) to a water miscible solvent (L) to obtain a gel (B); andd) drying of the gel (B).2: The process according to claim 1 , wherein the water soluble polysaccharide is selected from the group consisting of agar claim 1 , alginate claim 1 , carrageenan claim 1 , cellulose claim 1 , hyaluronic acid claim 1 , pectin claim 1 , starch claim 1 , xanthan gum claim 1 , modified cellulose claim 1 , chitin claim 1 , chitosan claim 1 , and a mixture thereof.3: The process according to claim 1 , wherein the water soluble polysaccharide is an alginate.4: The process according to claim 1 , wherein the preparing in ...

THERMOPLASTIC ELASTOMER COMPOSITION, FOAMED MATERIAL AND MANUFACTURING METHOD THEREOF

The present invention provides a thermoplastic elastomer composition for foaming. The thermoplastic elastomer composition comprises: (A) an ethylene-based copolymer; (B) an olefin block copolymer; (C) an unsaturated aliphatic rubber; and (D) a crosslinking agent. The olefin block copolymer is different from the ethylene-based copolymer. The weight ratio of the unsaturated aliphatic rubber (C) to the olefin block copolymer (B) is 1:1.5 to 1:5. 1. A thermoplastic elastomer composition for foaming , comprising:(A) an ethylene-based copolymer;(B) an olefin block copolymer, the olefin block copolymer being different from the ethylene-based copolymer;(C) an unsaturated aliphatic rubber; and(D) a crosslinking agent; wherein a weight ratio of the unsaturated aliphatic rubber (C) to the olefin block copolymer (B) is 1:1.5 to 1:5.2. The thermoplastic elastomer composition of claim 1 , comprising 20-45 wt % of the ethylene-based copolymer (A) claim 1 , 30-50 wt % of the olefin block copolymer (B) and 10-25 wt % of the unsaturated aliphatic rubber (C) claim 1 , based on a total weight of the thermoplastic elastomer composition.3. The thermoplastic elastomer composition of claim 1 , wherein the ethylene-based copolymer (A) is selected from an ethylene-based copolymer with a carbonyl group claim 1 , an ethylene-α-olefin random copolymer and a combination thereof.4. The thermoplastic elastomer composition of claim 3 , wherein the ethylene-based copolymer with a carbonyl group is ethylene/vinyl acetate copolymer claim 3 , ethylene/methyl methacrylate copolymer claim 3 , ethylene/butyl methacrylate copolymer claim 3 , ethylene/butyl acrylate copolymer claim 3 , ethylene/ethyl acrylate copolymer claim 3 , ethylene/acrylic acid copolymer claim 3 , ethylene/acrylic acid ionomer or a mixture thereof.5. The thermoplastic elastomer composition of claim 3 , wherein the ethylene-α-olefin random copolymer is ethylene-propylene random copolymer claim 3 , ethylene-1-butene random copolymer ...

THERMOFORMED POLYMERIC FOAM ARTICLES AND METHODS

Thermoformed polymeric foam articles are described herein In some embodiments, the articles are made by a manufacturing method (e.g., a continuous process) which involves the extrusion and subsequent thermoforming of a blowing agent containing thermoplastic sheet. The thermoformed polymeric foam articles may have a lower density than the precursor sheet from which they are formed. In some but not all embodiments, the precursor sheet is a multi-layer sheet which includes at least one foam layer. In such embodiments, the thermoformed articles also include multiple layers and at least one foam layer. 1. A thermoformed polymeric foam article produced by a method comprising:a) conveying a mixture of polymeric material and blowing agent downstream in an extruder;b) extruding the mixture in the form of a precursor sheet; andc) heating and forming the precursor sheet into a shape to form a thermoformed article including at least one foam layer,wherein the time between step (b) and step (c) is less than one hour and the density of the thermoformed article is lower than the density of the precursor sheet.2. A method for making a thermoformed polymeric foam article by a continuous process , the method comprising:a) conveying a mixture of polymeric material and blowing agent downstream in an extruder;b) extruding the mixture in the form of a precursor sheet; andc) heating and forming the precursor sheet into a shape to form a thermoformed article including at least one foam layer,wherein the time between step (b) and step (c) is less than one hour and the density of the thermoformed article is lower than the density of the precursor sheet.3. A thermoformed polymeric foam article according to claim 1 , wherein the article has a greater than 4:1 draw ratio claim 1 , a maximum wall thickness of less than 3 mm and a density reduction of less than 35%. The present invention relates to thermoformed polymeric foam articles. In some embodiments, the articles are made by a continuous ...

METHOD FOR MAKING SHAPEABLE MICROCELLULAR POLY LACTIC ACID ARTICLES

A method for making a shapeable article from poly(lactic acid) includes treating solid poly(lactic acid) that results in the solid poly(lactic acid) having a crystallinity of at least 20% by weight based on the weight of the solid poly(lactic acid) and a gas concentration of 6% to 16% by weight based on the weight of the solid poly(lactic acid); and heating the solid poly(lactic acid) having said minimum crystallinity and gas concentration to produce a cellular poly(lactic acid) article that is shapeable. The shapeable cellular poly(lactic acid) article is advantageous in that the article can be further shaped by heat and/or pressure (or vacuum), such as via thermoforming, into a variety of useful products. 1. Poly(lactic acid) having cells less than 100 microns , a maximum density relative to the density of solid poly(lactic acid) of 40% , a percent tensile elongation before break of 10% to 50% , and a minimum crystallinity of 20%.2. The poly(lactic acid) of claim 1 , having the form of a sheet or rod.3. The poly(lactic acid) of claim 1 , wherein the poly(lactic acid) has a cellular poly(lactic acid) structure within the interior and a noncellular poly(lactic acid) layer at the surface.4. The poly(lactic acid) of claim 1 , wherein the density is greater than 5% to 40% relative to the density of solid poly(lactic acid).5. The poly(lactic acid) of claim 1 , which has been treated with heat while being shaped.6. The poly(lactic acid) of claim 5 , which has a milky white color. This application is a division of U.S. patent application Ser. No. 12/673161, filed Aug. 4, 2010, which is the national stage of International Patent Application No. PCT/US2008/073360, filed Aug. 15, 2008, which claims the benefit of U.S. Provisional Application No. 60/956,092, filed Aug. 15, 2007, the disclosures of all of which are incorporated herein expressly by reference.A solid-state foaming process is illustrated in wherein foaming occurs while the polymer remains in the solid state ...

INJECTABLE HEAT SINK

A heat sink arrangement includes a housing associated with an electronic heat source. The housing has a cavity adjacent to the heat source. A thermally conductive, electrically insulating foam heat sink is disposed in the cavity and draws heat out of the heat source. The foam heat sink may be formed of a two-part epoxy. 1. A heat sink arrangement , comprising:an electronic heat source;a housing associated with the heat source, the housing having a cavity adjacent to the heat source; anda foam heat sink disposed in the cavity and configured to draw heat out of the heat source.2. The heat sink arrangement of wherein the housing contains the heat source.3. The heat sink arrangement of wherein the electronic heat source comprises a transistor claim 1 , a power amplifier claim 1 , and/or an integrated circuit.4. The heat sink arrangement of wherein the heat sink is thermally conductive and electrically insulating claim 1 , and substantially fills the cavity.5. The heat sink arrangement of wherein the heat sink is formed out of a two-part epoxy.6. The heat sink arrangement of wherein the heat sink is configured to have been expanded within the cavity by carbon dioxide.7. The heat sink arrangement of wherein gaseous carbon dioxide is trapped within the heat sink.8. A method of removing heat from an electronic heat source that is associated with a housing having a cavity claim 1 , the method comprising:blowing a liquid foam into the cavity;waiting for the liquid foam to cure into a solid or semi-solid foam inside the cavity;operating the electronic heat source; andusing the solid or semi-solid foam in the cavity to draw heat out of the electronic heat source.9. The method of wherein the cavity is adjacent to the heat source.10. The method of further comprising:providing a first container containing a first epoxy part and a first blowing agent part;providing a second container containing a second epoxy part and a second blowing agent part; andmixing contents of the first ...

Method of Making Foam

A method of making a foam from a polymerizable resin includes the following steps. A thermally-activated initiator having a temperature below the initiation temperature is combined with an elevated-temperature solution having the polymerizable resin and carbon dioxide at a temperature above a promoted temperature to create a resulting mixture having a temperature above the promoted temperature. The resulting mixture is expanded by decreasing the pressure of the mixture to create a froth having a plurality of cells formed by carbon dioxide that expanded out of solution. The polymerizable resin within the froth is cured to create a foam. 1. A method of making a foam from a polymerizable resin , the method comprising:(i) providing a thermally-activated initiator having a given initiation temperature and a given promoted temperature, wherein the temperature of the initiator is below the initiation temperature;(ii) providing an elevated-temperature solution comprising a given amount of the polymerizable resin and carbon dioxide, and optionally promoter, wherein the temperature of the elevated-temperature solution is above the promoted temperature;(iii) combining at a mixing pressure the initiator of step (i) with the solution of step (ii) to form a mixture having a temperature above the promoted temperature;(iv) expanding the mixture by decreasing the pressure of the mixture to below the mixing pressure to create a froth comprising a plurality of cells formed by carbon dioxide that expanded out of solution; and(v) curing the polymerizable resin within the froth to create a solidified matrix encasing the plurality of cells.2. The method of wherein the elevated-temperature solution of step (ii) further comprises co-reactant.3. The method of wherein the mixing pressure is at least 100 psig.4. The method of wherein the temperature of the initiator of step (i) is at most 45° C. and the temperature of the elevated-temperature solution of step (ii) is at least 25° C.5. The ...

PROCESS FOR PREPARING THERMOPLASTIC ELASTOMER FOAM AND FOAMED ARTICLE

A thermoplastic elastomer foam is made by incorporating a gaseous or supercritical blowing agent under pressure into a molten thermoplastic elastomer comprising polymeric polymeric crystalline domains, then releasing the pressure to foam the thermoplastic elastomer. 128.-. (canceled)29. A polymeric mixture made by a method comprising:providing a polymer melt comprising a molten thermoplastic elastomer and a molten semi-crystalline polymer that is miscible in the molten thermoplastic elastomer; andcooling the polymer melt to a temperature below a crystallization temperature, wherein the crystallization temperature is a temperature at which regions of the semi-crystalline polymer become immiscible with the thermoplastic elastomer and phase-separate from the thermoplastic elastomer, thereby forming a polymeric mixture comprising the regions of the semi-crystalline polymer distributed in the thermoplastic elastomer;wherein the semi-crystalline polymer comprises from 0.1 weight percent to 20 weight percent of total polymer weight of the polymeric mixture; andwherein the semi-crystalline polymer comprises a polymer chosen from nylon 11, nylon 12, or a copolymer of ethylene with at least one vinyl monomer.30. The polymeric mixture of claim 29 , wherein the thermoplastic elastomer comprises a thermoplastic polyurethane elastomer.31. The polymeric mixture of claim 30 , wherein polymeric diol segments of the thermoplastic polyurethane elastomer comprise from 35 weight percent to 65 weight percent of the thermoplastic polyurethane polymer.32. The polymeric mixture of claim 30 , wherein the thermoplastic polyurethane elastomer is chosen from a thermoplastic polyester-polyurethane elastomer claim 30 , a thermoplastic polyether-polyurethane elastomer claim 30 , a thermoplastic polycarbonate-polyurethane elastomer claim 30 , or a thermoplastic polyurethane elastomer comprising polyolefinic segments.33. The polymeric mixture of claim 29 , wherein the thermoplastic elastomer ...