Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 17819. Отображено 100.
05-04-2017 дата публикации

Вкладыш для эндопротеза

Номер: RU0000169887U1

Полезная модель относится к медицине, а именно к антифрикционным вкладышам модифицированного политетрафторэтилена для искусственных эндопротезов суставов, и может использоваться в узлах трения эндопротезов тазобедренного, коленного, плечевого, локтевого суставов, а также межпозвоночных дисков. Технический результат заявленной полезной модели заключается в повышении срока службы деталей эндопротеза за счет изменения молекулярной структуры политетрафторэтилена, из которого изготовлен антифрикционный вкладыш, обеспечивающего снижение интенсивности износа вкладыша. Полимерный вкладыш для эндопротеза, характеризующийся тем, что выполнен в виде детали с криволинейной поверхностью из радиационно-модифицированного политетрафторэтилена со сферолитной структурой, полученной посредством облучения заготовки из политетрафторэтилена ионизирующим излучением до поглощенной дозы 60-800 кГр со скоростью облучения более 1 Гр/сек при понижении температуры заготовки в процессе облучения на 0,9-2 град/10 кГр с поддержанием температуры ниже температуры плавления политетрафторэтилена и выше температуры его кристаллизации. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 169 887 U1 (51) МПК C08J 3/28 (2006.01) C08F 2/46 (2006.01) A61F 2/30 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016146254, 25.11.2016 (24) Дата начала отсчета срока действия патента: 25.11.2016 (72) Автор(ы): Коробков Александр Олегович (RU), Слесаренко Сергей Витальевич (RU) 05.04.2017 Приоритет(ы): (22) Дата подачи заявки: 25.11.2016 (56) Список документов, цитированных в отчете о поиске: RU 2567540 C2, 10.11.2015. RU Адрес для переписки: 109456, Москва, Рязанский пр-кт, 75, корп. 4, 1-я башня, 7 этаж, КГ "Вайзэдвайс", ООО "ФПБ "Гардиум", пат. пов. Купцова Е.В., рег. N 1264 1 6 9 8 8 7 (57) Формула полезной модели 1. Полимерный вкладыш для эндопротеза, характеризующийся тем, что выполнен в виде детали с криволинейной поверхностью из ...

Подробнее
14-06-2017 дата публикации

Устройство предварительной активации полимеров

Номер: RU0000171740U1

Полезная модель относится к устройствам обработки полимерных материалов для улучшения адгезионных свойств лакокрасочных и клеевых покрытий к поверхности изделий без изменения физико-механических свойств материала и может быть использована в легкой и автомобильной промышленности. В устройстве предварительной активации полимеров, содержащем корпус, включающий изолированные друг от друга два электрода для создания между ними электрического поля, штуцера в верхней части корпуса, согласно полезной модели, электроды изготовлены в виде пластин, одна из граней которых выполнена в виде дуги, установлены в корпусе зеркально, при этом корпус выполнен из двух зеркальных смыкающихся половинок с открытым дном. Техническим результатом полезной модели является активация полимерных материалов при атмосферном давлении без предварительной подготовки, снижение энергетических и экономических затрат. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 171 740 U1 (51) МПК C08J 7/18 (2006.01) B29C 71/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2017111690, 06.04.2017 (24) Дата начала отсчета срока действия патента: 06.04.2017 Приоритет(ы): (22) Дата подачи заявки: 06.04.2017 (45) Опубликовано: 14.06.2017 Бюл. № 17 Адрес для переписки: 153000, г. Иваново, пр. Шереметевский, 7, ИГХТУ, отдел патентной и изобретательской работы (56) Список документов, цитированных в отчете о поиске: RU 2180617 C2, 20.03.2002. RU 2027810 C1, 27.01.1995. JPS 6228812 B2, 23.06.1987. EA 8013 B1, 27.02.2007. 1 7 1 7 4 0 (73) Патентообладатель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный химико-технологический университет" (ИГХТУ) (RU) 14.06.2017 R U Дата регистрации: (72) Автор(ы): Богданов Павел Владимирович (RU), Шутов Дмитрий Александрович (RU), Иванов Александр Николаевич (RU) 1 7 1 7 4 0 R U (57) Формула полезной модели Устройство предварительной ...

Подробнее
02-02-2012 дата публикации

Sequentially cross-linked polyethylene

Номер: US20120029160A1
Принадлежит: Howmedica Osteonics Corp

A method of producing an improved polyethylene, especially an ultra-high molecular weight polyethylene utilizes a sequential irradiation and annealing process to form a highly cross-linked polyethylene material. The use of sequential irradiation followed by sequential annealing after each irradiation allows each dose of irradiation in the series of doses to be relatively low while achieving a total dose which is sufficiently high to cross-link the material. The process may either be applied to a preformed material such as a rod or bar or sheet made from polyethylene resin or may be applied to a finished polyethylene part.

Подробнее
09-02-2012 дата публикации

Method to disperse nanoparticles into elastomer and articles produced therefrom

Номер: US20120035309A1
Автор: JIANG Zhu, Lillian Guo
Принадлежит: Baker Hughes Inc

Methods of making elastomeric nanocomposites with improved nanoparticle dispersion in the elastomer are described. The method includes the use of liquid form additives such as oils, plasticizers and/or solvents as dispersing agents to disperse nanoparticles into elastomers. Also described are articles such as downhole elements including the elastomeric nanocomposites made by the methods described herein.

Подробнее
19-04-2012 дата публикации

Hydrous water absorbent polymer dispersed ultraviolet curable resin composition, insulated electric wire using the same, method for producing the wire, and coaxial cable

Номер: US20120090871A1

A hydrous water absorbent polymer dispersed ultraviolet curable resin composition includes an ultraviolet curable resin composition, and a hydrous water absorbent polymer swollen by water beforehand, and dispersed in the ultraviolet curable resin composition so that the hydrous water absorbent polymer dispersed ultraviolet curable resin composition has a moisture content of not less than 50 percent. The water absorption rate of the ultraviolet curable resin composition is not more than 2 percent.

Подробнее
03-05-2012 дата публикации

Thermoplastic Composition

Номер: US20120108722A1
Автор: Dean Thetford
Принадлежит: Lubrizol Advanced Materials Inc

The invention relates to a composition containing a particulate solid, a plastic material and a compound obtained/obtainable by a process comprising (i) reacting at a temperature of 120° C. or less, or 100° C. or less a hydroxycarboxylic acid and a lactone; and (ii) optionally reacting the product of (i) with a C 1-50 carboxylic acid. The invention further relates to novel compounds, and the use of the compound as a dispersant in a plastic material.

Подробнее
10-05-2012 дата публикации

Polyurethane materials comprising carbon nanotubes

Номер: US20120112133A1
Принадлежит: BAYER MATERIALSCIENCE AG

The invention relates to semicrystalline polyurethane (PU) compositions which have been filled with carbon nanotubes (CNTs) and have improved electrical properties, and which are obtainable on the basis of water-based polyurethane-CNT mixtures. The invention further relates to a process for producing the polyurethane compositions, in which water-based polyurethane latices are mixed with carbon nanotubes dispersed in water. The invention further relates to films produced by pressurized injection moulding processes or processing of casting solutions.

Подробнее
07-06-2012 дата публикации

Conductive masterbatches and conductive monofilaments

Номер: US20120141762A1
Автор: Sheng-Shan Chang
Принадлежит: TAIWAN TEXTILE RESEARCH INSTITUTE

The present invention relates to a polyester matrix powder comprising a polybutylene terephthalate, a homogeneously dispersed carbon nanotube powder, a dispersant and a chain extender; to a conductive masterbatch with homogeneous and smooth surface; to a process for the preparation of the conductive masterbatch; to a conductive monofilament prepared from the conductive masterbatch; to a process for the preparation of the conductive monofilament; and to a fabric article prepared from the monofilament. The present invention is characterized in the preparation of carbon nanotube-containing fiber materials with higher conductivity and the improvement of the spinning property of the conductive masterbatches to avoid blocking and yarn breakage during the spinning process.

Подробнее
28-06-2012 дата публикации

Method for producing composite and the composite

Номер: US20120164352A1
Принадлежит: KEIO UNIVERSITY

The present invention is a method for producing a composite including a matrix and a dispersed material dispersed in the matrix. The method includes introducing a raw material for dispersed material which constitutes a dispersed material into a fluid including a melt of a raw material for matrix which constitutes a matrix or a solution containing a raw material for matrix by a vapor deposition method, to obtain a composite.

Подробнее
19-07-2012 дата публикации

Polyolefin dispersion technology used for resin coated sand

Номер: US20120183705A1
Принадлежит: Dow Global Technologies LLC

A polymer-coated particulate material having: a particulate substrate; and an applied compound, wherein the applied compound coats at least 50% of the surface of the particulate substrate, and wherein, at the time of application, the applied compound includes a dispersion including: a thermoplastic polymer; and a stabilizing compound. In another aspect, embodiments disclosed herein relate to a method of forming a polymer-coated particulate material, the method including the steps of: incorporating a particulate substrate and a dispersion, the dispersion comprising: a thermoplastic polymer; a stabilizing compound; and a dispersion medium selected from the group consisting of an organic solvent, water, and combinations thereof; removing at least a portion of the dispersion medium.

Подробнее
09-08-2012 дата публикации

Low molecular weight phosphorus-containing polyacrylic acids and use thereof as dispersants

Номер: US20120202937A1
Принадлежит: BASF SE

An aqueous solution of acrylic acid polymers having a total phosphorus content of organically and possibly inorganically bound phosphorus, wherein (a) a first portion of the phosphorus is present in the form of phosphinate groups bound within the polymer chain, (b) a second portion of the phosphorus is present in the form of phosphinate and/or phosphonate groups bound at the polymer chain end, (c) possibly a third portion of the phosphorus is present in the form of dissolved inorganic salts of phosphorus, wherein at least 76% of the total phosphorus content is present in the form of phosphinate groups bound within the polymer chain.

Подробнее
16-08-2012 дата публикации

Functionalized vinyl polymer nanoparticles

Номер: US20120208948A1

Nanoparticles of functionalised, cross-linked vinyl polymer, usable as reinforcing filler in a polymeric matrix. The vinyl polymer is a copolymer of at least the following monomers, which are all copolymerisable by free-radical polymerisation: a non-aromatic vinyl monomer “A”; a monomer “B” bearing a function Z of formula ≡Si—X, where X represents a hydroxyl or hydrolysable group; and a cross-linking monomer “C” which is at least bifunctional from the point of view of the polymerisation. The vinyl polymer is preferably a polymethacrylate, in particular a copolymer of methyl methacrylate (monomer A), trimethoxysilyipropyl methacrylate (monomer B) and ethylene glycol dimethacrylate (monomer C), being in the form of nanobeads the diameter of which is of between 10 and 100 nm.

Подробнее
01-11-2012 дата публикации

EPDM foam and adhesive sealing material

Номер: US20120277337A1
Принадлежит: Nitto Denko Corp

An EPDM foam contains an ethylene-propylene-diene rubber, in which the EPDM foam has water stopping performance lasting for 1 hour or more according to 50% waterstop test and metal corrosion is not observed according to metal corrosion test.

Подробнее
15-11-2012 дата публикации

Preparation method of clay/polymer composite using supercritical fluid-organic solvent system

Номер: US20120289618A1

The present invention relates to a method for preparing a clay/polymer composite having a predetermined form such as powder or porous foam with an enhanced thermal and mechanical stability using a simple, economical and eco-friendly supercritical fluid-organic solvent system, and more particularly, to a method for preparing a clay/biodegradable polymer stereoisomeric nanocomposite and a clay/polymer composite prepared by the method thereof. The method of preparing a clay/polymer composite according to the present invention may include (a) introducing a clay, a biodegradable single-phase D-type/L-type stereoisomeric polymer and an organic solvent into a reactor, (b) introducing a supercritical fluid into the reactor to form a stereoisomeric composite, and forming a clay/polymer composite dispersed with the clay on the stereoisomeric composite, and (c) collecting the clay/polymer composite, and the clay/polymer composite of the present invention is a clay/polymer composite prepared by the preparation method.

Подробнее
29-11-2012 дата публикации

Method for preparing organic-inorganic composite materials

Номер: US20120302682A1
Принадлежит: NANJING TECH UNIVERSITY

A method for preparing organic-inorganic composite materials is provided. It is a dispersion method that the inorganic phase is introduced into the polymer matrix uniformly. The core-shell structure, in which the inorganic materials are core and the organic materials are shell, is formed by first wrapping the inorganic materials with the organic materials in the same reactor. Therefore, the match between the polarity of inorganic phase and the polarity of polymer phase is increased.

Подробнее
10-01-2013 дата публикации

Technique for stabilizing solutions of titanium dioxide nanoparticles in acrylate polymers by means of short-pulsed uv laser irradiation

Номер: US20130012650A1

A method for preparing a colloid solution of titanium dioxide nanoparticles in a solution of acrylic resin in organic solvent includes mixing titanium dioxide nanoparticles with a solution of acrylic resin in organic solvent, so as to obtain the colloid solution. The colloid solution is subjected to a stabilization treatment suitable for preventing or reducing nanoparticle aggregation, the treatment includes irradiating the colloid solution with pulsed coherent light having a wavelength substantially comprised in the ultraviolet absorption band of the titanium dioxide nanoparticles.

Подробнее
21-02-2013 дата публикации

Sequentially cross-linked polyethylene

Номер: US20130046042A1
Принадлежит: Howmedica Osteonics Corp

A method of producing an improved polyethylene, especially an ultra-high molecular weight polyethylene utilizes a sequential irradiation and annealing process to form a highly cross-linked polyethylene material. The use of sequential irradiation followed by sequential annealing after each irradiation allows each dose of irradiation in the series of doses to be relatively low while achieving a total dose which is sufficiently high to cross-link the material. The process may either be applied to a preformed material such as a rod or bar or sheet made from polyethylene resin or may be applied to a finished polyethylene part.

Подробнее
14-03-2013 дата публикации

Photoactivatable paint curing device and method

Номер: US20130062533A1
Принадлежит: Honda Motor Co Ltd

Disclosed herein is a device for curing photoactivatable paint coatings. The device comprises a curing radiation source configured to emit radiation sufficient to cure a photoactivatable paint coating at a target location. The radiation source is located at a source location operably spaced from the target location where the photoactivatable paint coating is to be cured thereon. A motorized support for supporting the curing radiation source at the source location is provided where the motorized support is configured to advance the curing radiation source along a travel path. The motorized support is further configured to cycle the curing radiation source along the travel path between a first position and a second position in order to vary over time the angle of attack of the radiation emitted from the curing radiation source toward the target location.

Подробнее
14-03-2013 дата публикации

POLYETHYLENE CROSS-LINKED WITH AN ANTHOCYANIN

Номер: US20130064711A1
Принадлежит: HOWMEDICA OSTEONICS CORP.

A method for manufacturing of ultrahigh molecular weight polyethylene (UHMWPE) for implants, where the implants have been machined out of UHMWPE blocks or extruded rods, has anthocyanin dispersely imbedded in the polyethylene. The implant is then exposed to γ ray or electron beam irradiation in an amount of at least 2.5 Mrad followed by a heat treatment to prevent the implant from becoming brittle in the long term as well as to improve strength and wear. The method includes mixing a powder or granulate resin of UHMWPE with an aqueous liquid that contains anthocyanin in a predetermined amount. The water is then evaporated to deposit the anthocyanin in a predetermined concentration on the polyethylene particles. The doped UHMWPE particles are compressed into blocks at temperatures in a range of approximately 135° C.-250° C. and pressures in a range of approximately 2-70 MPa. Medical implants are made from the blocks. 1. A method of making cross-linked ultra-high molecular weight polyethylene material comprising:combining a solution of anthocyanin material and ultra-high molecular weight polyethylene (UHMWPE) powder to form a doped ultra-high-molecular weight polyethylene wherein the anthocyanin is uniformly blended with the UHMWPE powder after drying; andconsolidating the doped powder to form a material having a color from light pink to deep red.2. The method as set forth in wherein the concentration of anthocyanin is between 0.005 and 5% by weight.3. The method as set forth in wherein a pink color is produced by a concentration of 0.005 by weight.4. The method as set forth in wherein the anthocyanin and the UHMWPE powder is blended in a blender prior to drying.5. The method as set forth in wherein the blend is dryed under nitrogen.6. The method of further comprising the step of irradiating the consolidated doped UHMWPE and heating the doped UHMWPE after irradiating.7. The method of further comprising the step of forming the irradiated and heated doped ultra-high ...

Подробнее
21-03-2013 дата публикации

FIBER-BASED ADSORBENTS HAVING HIGH ADSORPTION CAPACITIES FOR RECOVERING DISSOLVED METALS AND METHODS THEREOF

Номер: US20130071659A1
Принадлежит: UT-BATTELLE, LLC

A fiber-based adsorbent and a related method of manufacture are provided. The fiber-based adsorbent includes polymer fibers with grafted side chains and an increased surface area per unit weight over known fibers to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. The polymer fibers include a circular morphology in some embodiments, having a mean diameter of less than 15 microns, optionally less than about 1 micron. In other embodiments, the polymer fibers include a non-circular morphology, optionally defining multiple gear-shaped, winged-shaped or lobe-shaped projections along the length of the polymer fibers. A method for forming the fiber-based adsorbents includes irradiating high surface area polymer fibers, grafting with polymerizable reactive monomers, reacting the grafted fibers with hydroxylamine, and conditioning with an alkaline solution. High surface area fiber-based adsorbents formed according to the present method demonstrated a significantly improved uranium adsorption capacity per unit weight over existing adsorbents. 1. A method comprising:providing a polymer fiber including a substantially circular cross-section and defining a mean diameter of less than 15 microns;exposing the polymer fiber to ionizing radiation to generate a reaction initiating a radical on the polymer fiber;co-grafting polymerizable monomers containing nitrile and hydrophilic groups onto the polymer fiber to form grafted side chains;reacting the nitrile groups in the grafted side chains with a reagent to convert the nitrile groups into compounds adapted to complex metal ions; andconditioning the grafted polymer fiber with an alkaline solution to obtain a fiber-based adsorbent capable of complexing metal ions from an aqueous solution.2. The method according to wherein the polymer fiber cross-section defines a mean diameter less than or equal to about 1 micron.3. The method according to wherein co-grafting polymerizable monomers is performed ...

Подробнее
11-04-2013 дата публикации

HYDROPHILIC GELS FROM POLYALKYLETHER-BASED PHOTOINITIATORS

Номер: US20130090406A1
Принадлежит: COLOPLAST A/S

The invention provides a method for the manufacture of a catheter comprising a hydrophilic gel. The method comprising the steps of combining a polymeric photoinitiator of the general formula (I): 2. The method according to claim 1 , wherein A claim 1 , A claim 1 , Aand Aare linked to R claim 1 , R claim 1 , R claim 1 , and R claim 1 , respectively claim 1 , via a spacer group.3. The method according to claim 2 , wherein the spacer group is selected from the group consisting of alkylene claim 2 , cycloalkylene claim 2 , aryl claim 2 , and alkylene ether groups.4. The method according to claim 1 , wherein R=—CHCH— claim 1 , in which one or more H atoms may be replaced by A.5. The method according to claim 1 , wherein R=—CHCH— claim 1 , in which one or more H atoms may be replaced by A.6. The method according to wherein Rand R=—CHCH— claim 1 , in which one or more H atoms may be replaced by Aor A claim 1 , respectively.7. The method according to claim 1 , wherein R=OH.8. The method according to claim 1 , wherein R=H.9. The method according to claim 1 , wherein A claim 1 , A claim 1 , Aand Aare identical or different photoinitiator moieties selected from the group consisting of benzoin ethers claim 1 , phenyl hydroxyalkyl ketones claim 1 , phenyl aminoalkyl ketones claim 1 , benzophenones claim 1 , thioxanthones claim 1 , xanthones claim 1 , acridones claim 1 , anthraquinones claim 1 , fluorenones claim 1 , dibenzosuberones claim 1 , benzils claim 1 , benzil ketals claim 1 , α-dialkoxy-acetophenones claim 1 , α-hydroxy-alkyl-phenones claim 1 , α-amino-alkyl-phenones claim 1 , acyl-phosphine oxides claim 1 , phenyl ketocoumarins claim 1 , silane claim 1 , maleimides claim 1 , and derivatives thereof.10. The method according to claim 9 , wherein A claim 9 , A claim 9 , Aand Aare identical or different photoinitiator moieties selected from the group consisting of 2-hydroxy-2-methyl-propiophenone claim 9 , benzophenone claim 9 , thioxanthone claim 9 , benzil claim 9 , ...

Подробнее
11-04-2013 дата публикации

COMPOSITE MATERIALS

Номер: US20130090414A1
Автор: Mortimer Steve
Принадлежит: Hexcel Composites Limited

A process for the manufacture of a cured composite material, the process comprising the steps of blending together a liquid curable resin and a curing agent having a melting point greater than 100° C. to form a liquid blend of curable resin and curing agent, at least partially impregnating a structural fibre arrangement with the blended curable resin and curing agent to form a curable composite material, followed by curing the composite material by exposure to elevated temperature and at a pressure of no greater than 3 bar absolute to form a cured composite material. 1. A process for preparing a reinforcement resin comprising the steps of:a. providing a liquid curable resin;b. providing a curing agent as a solid;c. continuous blending of said curing agent with said liquid curable resin to dissolve the curing agent within said liquid curable resin to form a liquid blend, wherein said continuous blending comprises passing said curable resin and said curing agent through a blender that comprises an entrance, a blending zone and an exit and wherein said liquid blend that flows from said exit is at a temperature of from 70° C. to 150° C.; andd. cooling said liquid blend 7 said liquid blend flows from the exit of said blender to form the reinforcement resin.2. The process of claim 1 , wherein the residence time of said curing agent and liquid curable resin as they pass through said blender ranges from 1 second to 10 minutes.3. The process of claim 1 , wherein said cooling is conducted by increasing the surface area of said liquid blend that is exposed to a cooling medium.4. The process of claim 1 , wherein said liquid blend is cooled by casting of the liquid blend or by impregnation of a structural fibre component with said liquid blend.5. The process according to claim 1 , wherein said liquid curable resin comprises a toughener.6. The process of which includes the additional step of partially impregnating a structural fibre arrangement with said reinforcement resin to ...

Подробнее
18-04-2013 дата публикации

HYDROPHILIC GELS DERIVED FROM GRAFTED PHOTOINITIATORS

Номер: US20130096221A1
Принадлежит: COLOPLAST A/S

The invention provides a method for the manufacture of a gel, said method comprising the steps of: providing a matrix composition comprising a polymeric photoinitiator of the general formula (I): Polymer-[CR—CHR-Spacer(PI)](I) curing the matrix composition by exposing it to UV radiation and exposing the matrix composition to a swelling medium. The invention also relates to gels obtainable via the above method. The invention provides a hydrophilic gel precursor manufactured from the polymeric photoinitiator of Formula (I). Medical devices comprising the gels and hydrophilic gel precursors of the invention are provided. The invention also provides the use of a polymeric photoinitiator in the manufacture of a gel. 2. (canceled)3. The method according to claim 1 , wherein the matrix composition additionally comprises one or more hydrophilic gel-forming polymers and/or hydrophilic gel-forming monomers.4. The method according to claim 1 , wherein the gel-forming polymer is selected from the group consisting of polyacrylates claim 1 , polyalkylethers claim 1 , polyurethanes claim 1 , polyethylene vinyl acetates claim 1 , polyvinylpyrrolidone and co-polymers and blends thereof.5. The method according to claim 3 , wherein the gel-forming monomer is selected from the group consisting of acrylate monomers claim 3 , N-vinylpyrrolidone claim 3 , and epoxide monomers.6. The method according to claim 1 , wherein the polymer in formula I is selected from the group consisting of polyolefines claim 1 , polyacrylates claim 1 , polyesters claim 1 , polyurethanes claim 1 , polyamides claim 1 , polyalkyloxides claim 1 , polydialkylsiloxanes or various copolymers comprising blocks or repeatable units of these polymers.7. The method according to claim 6 , wherein the polymer in formula I is selected from the group consisting of polyolefines claim 6 , polyacrylates claim 6 , polyesters claim 6 , polyurethanes claim 6 , polyamides claim 6 , polyalkyloxides and polydialkylsiloxanes.8. The ...

Подробнее
18-04-2013 дата публикации

POLYURETHANE BASED PHOTOINITIATORS

Номер: US20130096224A1
Принадлежит:

A photoinitiator of the general formula (I): (—(R(A))—(R(A)-0)—(R3(A)-0)))-C(0)NH—R(A)-NHC(0))- wherein R(R, R, Rand Rand m, n, o, p, q, r, s, t, u and v are as defined herein and A, A, A, Aand Aare identical or different photoinitiator moieties. 1. A polymeric photoinitiator of the general formula I:{'br': None, 'sub': 1', '1', 'm', 'u', '2', '2', 'n', 'o', '3', '3', 'p', 'q', '4', '4', 'r', 'v', '5', '5', 's', 't, '(—(R(A))-(R(A)-O)—(R(A)-O)—(R(A))-C(O)NH—R(A)-NHC(O))—\u2003\u2003(I)'}{'sub': 2', '3', '5, 'wherein R, Rand Rcan each independently be selected from C1-C25 linear alkyl, C3-C25 branched alkyl, C3-C25 cycloalkyl, aryl and heteroaryl groups such as any aromatic hydrocarbon with up to 20 carbon atoms;'}{'sub': 1', '4', '1', '4, 'Rand Rare each independently selected from C1-C25 linear alkyl, C3-C25 branched alkyl, C3-C25 cycloalkyl, aryl, heteroaryl, hydrogen, —OH, —CN, halogens, amines, amides, alcohols, ethers, thioethers, sulfones and derivatives thereof, sulfonic acid and derivatives thereof, sulfoxides and derivatives thereof, carbonates, nitrates, acrylates, hydrazine, azines, hydrazides, polyethylenes, polypropylenes, polyesters, polyamides, polyacrylates, polystyrenes, and polyurethanes; and when Rand Rare alkyl and aryl groups, they may be substituted with one or more substituents selected from CN; OH; azides; esters;'}{'sub': 2', '2', '1', '8', '3', '8, 'ethers; amides; halogen atoms; sulfones; sulfonic derivatives; NHor Nalk, where alk is any C-Cstraight chain alkyl group, C-Cbranched or cyclic alkyl group;'}m, n, p, and r are independently real numbers from 0 to 10 and s is a real number greater than or equal to 1;o and q are independently real numbers from 0 to 10000, provided that both o and q are not zero;u and v are independently real numbers from 0 to 1;t is an integer from 1 to 10000; and{'sub': 1', '2', '3', '4', '5, 'A, A, A, Aand Aare identical or different photoinitiator moieties.'}2. The polymeric photoinitiator according to claim 1 ...

Подробнее
18-04-2013 дата публикации

METHOD FOR OBTAINING A RUBBER COMPOSITION INCLUDING A THERMOPLASTIC FILLER

Номер: US20130096230A1
Принадлежит:

A process for the preparation of a rubber composition for the manufacture of tyres is presented. The composition is based on one or more diene elastomers, one or more reinforcing fillers, and a crosslinking system. The composition includes particles of one or more thermoplastic materials chosen from amorphous thermoplastic materials and semicrystalline thermoplastic materials, with the glass transition temperature of the amorphous thermoplastic material or materials and the melting point of the semicrystalline thermoplastic material or materials varying from 80° C. to 300° C. The particles exhibit a volume-average diameter of less than or equal to 200 μm. 111-. (canceled)12. A process for preparing a rubber composition usable in manufacturing tyres , the composition being based on one or more diene elastomers , one or more reinforcing fillers , and a crosslinking system , the composition including particles of one or more thermoplastic materials chosen from amorphous thermoplastic materials and semicrystalline thermoplastic materials , with a glass transition temperature of the one or more amorphous thermoplastic materials and a melting point of the one or more semicrystalline thermoplastic materials varying from 80° C. to 300° C. , and with the particles exhibiting a volume-average diameter of less than or equal to 200 μm , the process comprising:incorporating in at least one diene elastomer, during a non-productive stage, at least one reinforcing filler to form a first mixture, and thermomechanically kneading the first mixture in one or more goes until a maximum temperature of between 130° C. and 200° C. is reached;cooling the first mixture to a temperature of less than 60° C.;subsequently incorporating in the first mixture, during a productive stage, a crosslinking system, particles of at least one amorphous thermoplastic material having a glass transition temperature of less than 200° C., and particles of at least one semicrystalline thermoplastic material ...

Подробнее
09-05-2013 дата публикации

MIXING OF TELECHELIC RUBBER FORMULATIONS

Номер: US20130116360A1
Принадлежит: BRIDGESTONE CORPORATION

The present disclosure is directed to methods for preparing rubber compositions where those rubber compositions comprise at least one telechelic polymer and at least one filler. The methods make use of a mixer that includes a mixing chamber and at least one rotor with wings of specified configuration. Use of the disclosed methods yields a rubber composition with improved properties including an improved dispersion index after master batch mixing as compared to the same rubber composition mixed using standard 4 wing mixers. 1. A method for preparing a rubber composition , the method comprising: wherein the at least one rotor includes three long wings that have origins at a first end of a mixing section of the rotor and terminate beyond a center point of the mixing section of the at least one rotor,', 'wherein each long wing has three segments, including a first segment having a first clearance to the mixing chamber, a second segment having a second clearance to the mixing chamber different from the first clearance, and a third segment having a third clearance to the mixing chamber different from the first clearance and different from the second clearance,', 'wherein the rotor further includes three short wings that have origins at a second end of the mixing section of the rotor and terminate before the center point of the mixing section of the rotor, and', 'wherein the three short wings include a first short wing having the first clearance, a second short wing having the second clearance, and a third short wing having the third clearance;, '(a) providing a mixer having a mixing chamber and at least one rotor,'} at least one filler, and', {'sub': n', '4-n, 'at least one telechelic polymer having a cyclic amino alkyl functionality at its head and an RMXfunctionality at its terminus where R is an organic group, M is silicon or tin, X is a halogen atom, and n is a numeral from 0 to 3; and'}], '(b) adding to the mixing chamber, ingredients comprising(c) using the mixer to ...

Подробнее
16-05-2013 дата публикации

METHOD TO PREVENT STENT DAMAGE CAUSED BY LASER CUTTING

Номер: US20130119586A1
Принадлежит: Abbott Cardiovascular Systems Inc.

Apparatus, method and system for cutting a polymeric stent including the use of a polymeric mandrel as a laser shielding device. The polymeric mandrel is allowed to roll freely within a polymeric tube that is cut into a polymeric stent. 1. A method of producing a polymeric stent , comprising:positioning a polymeric mandrel and polymeric tube relative to the other such that the polymeric mandrel is within the polymeric tube and in contact with the polymeric tube inside surface, forming a tubing-mandrel assembly,wherein the polymeric tube has a first end and a second end;cutting the polymeric tube while the polymeric mandrel is positioned within the polymeric tube with a laser to form a stent,wherein during the cutting the polymeric tube rotates and the polymeric mandrel rolls in response to an angular force from the rotation of the polymeric tube,wherein the polymeric mandrel rolls on the inside surface of the polymeric tube; andremoving the stent from the mandrel.2. The method of claim 1 , wherein the polymeric tube is only supported at the first end.3. The method of claim 1 , wherein the polymeric tube is supported at the first end and the second end.4. The method of claim 1 , further comprising dispensing pressurized gas through a nozzle near the laser cutting point claim 1 , thereby forming a jet of pressurized gas to force debris toward the second end of the polymeric tube.5. The method of claim 4 , wherein the nozzle dispenses the pressurized gas at an angle between 0 and 90 degrees relative to a working outer tube surface.6. The method of claim 4 , wherein the gas is an inert gas.7. The method of claim 1 , wherein the polymeric mandrel is hollow.8. The method of claim 1 , wherein the polymeric mandrel is a solid rod that is not hollow.9. The method of claim 1 , wherein the polymeric mandrel is moved longitudinally along the inside surface of the polymeric tube toward the first or second end.10. The method of claim 4 , wherein the gas temperature is less than ...

Подробнее
16-05-2013 дата публикации

METHOD OF PRODUCING ABSORBENT RESIN

Номер: US20130123435A1
Принадлежит: NIPPON SHOKUBAI CO., LTD.

Provided is a method which does not require alteration of the raw materials or high capital investment, and improves and stabilizes the physical property (for example, liquid permeability) of a water absorbent resin by means of a simple technique. A method for producing a water absorbent resin is disclosed, which method includes a polymerization step of polymerizing an aqueous solution of acrylic acid (salt) to obtain a water-containing gel-like crosslinked polymer; a drying step of drying the water-containing gel-like crosslinked polymer to obtain a water absorbent resin powder; a classification step of classifying the water absorbent resin powder; and a surface crosslinking step of surface crosslinking the water absorbent resin powder, wherein in the classification steps that are carried before the surface crosslinking step and/or after the surface crosslinking step, the stretch tension (tension) of the metal sieve mesh used in the classification step is from 35 [N/cm] to 100 [N/cm]. 129-. (canceled)30. A method for producing a water absorbent resin comprising:a polymerization step of polymerizing an aqueous solution of acrylic acid (salt) to obtain a water-containing gel-like crosslinked polymer;a drying step of drying the water-containing gel-like crosslinked polymer to obtain a water absorbent resin powder;a classification step of classifying the water absorbent resin powder; anda surface crosslinking step of surface crosslinking the water absorbent resin powder,wherein in the classification step that is carried before the surface crosslinking step and/or after the surface crosslinking step, the tension (tension) of a metal sieve mesh used in the classification step is from 35 [N/cm] to 100 [N/cm].31. A method for producing a water absorbent resin comprising:a polymerization step of polymerizing an aqueous solution of acrylic acid (salt) to obtain a water-containing gel-like crosslinked polymer;a drying step of drying the water-containing gel-like crosslinked ...

Подробнее
30-05-2013 дата публикации

PROCESS FOR MANUFACTURING AN ADHESIVE BY MEANS OF EXTRUSION

Номер: US20130137794A1
Принадлежит: Henkel AG & Co. KGaa

The present invention relates to a process for manufacturing an adhesive by extrusion, wherein the adhesive comprises at least one degraded polypropylene(co)polymer and at least one additional additive. 2. The process according to wherein the adhesive is a hot melt adhesive.3. The process according to wherein the thermomechanical degradation in step b) is carried out in the presence of at least one radical donor.4. The process according to wherein the radical donor is a peroxide.5. The process according to wherein the content of radical donor in the degraded polypropylene(co)polymer on entry into the second extrusion section is less than 0.01 wt %.6. The process according to wherein the additive is added in an amount such that the total amount of additive in the adhesive ranges from 10 to 90 wt %.7. The process according to wherein the additive is selected from the group consisting tackifying resins claim 1 , waxes claim 1 , stabilizers claim 1 , crosslinking agents claim 1 , fillers claim 1 , nucleating agents claim 1 , antioxidants claim 1 , adhesion promoters claim 1 , oils claim 1 , plasticizers claim 1 , elastomers claim 1 , polymers and any of their mixtures.8. The process according to wherein the additive is a tackifying resin.9. The process according to wherein the melt viscosity of the polypropylene(co)polymer is at least 300000 mPa·s and the melt viscosity of the degraded polypropylene(co)polymer is from 500 mPa·s to 1000000 mPa·s claim 1 , wherein the melt viscosities are each determined at a temperature of 200° C.10. The process according to wherein the ratio of the highest temperature of the first extrusion section to the highest temperature of the second extrusion section is in a range of 1.05 to 1.55.11. The process according to wherein the adhesive is transformed into a bulk material after leaving the second extrusion section.12. The process according to wherein the melt viscosity of the adhesive is from 100 mPa·s to 200000 mPa·s and wherein the melt ...

Подробнее
13-06-2013 дата публикации

PROCESS FOR DISPERSING CELLULOSE ESTERS INTO ELASTOMERIC COMPOSITIONS

Номер: US20130150492A1
Принадлежит: EASTMAN CHEMICAL COMPANY

A process to produce an elastomeric composition is provided. The process comprising: 1. A process to produce an elastomeric composition , said process comprising:(a) mixing at least one cellulose ester with one or more carrier elastomers to form a cellulose ester concentrate;(b) blending said cellulose ester concentrate with at least one primary elastomer to produce said elastomeric composition,wherein at least a portion of said mixing of step (a) occurs at a temperature that is at least 10° C. greater than the temperature of said blending of step (b).2. The process according to wherein the melt viscosity ratio of the cellulose ester to the carrier elastomer is at least 0.1 and/or not more than 2.0 as measured at 170° C. and a shear rate of 400 s.3. The process according to wherein the melt viscosity ratio of the cellulose ester concentrate to the primary elastomer is at least 0.1 and/or not more than 2.0 as measured at 160° C. and a shear rate of 200 s.4. The process according to wherein at least a portion of said mixing and/or at least a portion of said blending operates at a shear rate of at least 50 sand/or not more than 1 claim 1 ,000 s.5. The process according to wherein at least a portion of said mixing occurs at a temperature of at least 150° C. and/or not more than 260° C.6. The process according to wherein at least a portion of said mixing occurs a temperature that exceeds the Tg of said cellulose ester.7. The process according to wherein at least a portion of said blending of step (b) occurs at a temperature not more than 180° C.8. The process according to wherein at least a portion of said mixing of step (a) occurs at a temperature that is at least 15° C. greater than the temperature of said blending of step (b).9. The process according to wherein said cellulose ester concentrate comprises at least 10 and/or not more than 90 weight percent of said cellulose ester.10. The process according to wherein said cellulose ester concentrate comprises at least 10 ...

Подробнее
20-06-2013 дата публикации

Tire tread base containing syndiotactic-1,2-polybutadiene with diverse carbon blacks

Номер: US20130153099A1
Принадлежит: Goodyear Tire and Rubber Co

The invention relates to a pneumatic tire having a cap/base configuration comprised of an outer tread cap rubber layer, with a tread running surface, and an underlying tread base rubber layer, where the base rubber layer contains syndiotactic polybutadiene with a diverse blend of carbon blacks.

Подробнее
20-06-2013 дата публикации

PLASMONIC ASSISTED SYSTEMS AND METHODS FOR INTERIOR ENERGY-ACTIVATION FROM AN EXTERIOR SOURCE

Номер: US20130156905A1
Принадлежит: Immunolight, LLC

A method and a system for producing a change in a medium disposed in an artificial container. The method places in a vicinity of the medium at least one of a plasmonics agent and an energy modulation agent. The method applies an initiation energy through the artificial container to the medium. The initiation energy interacts with the plasmonics agent or the energy modulation agent to directly or indirectly produce the change in the medium. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the plasmonics agent or the energy modulation agent. 1. A method for producing a change in a medium , comprising:(1) placing inside the medium to be treated an energy modulation agent and a photoactivatable agent, said energy modulation agent comprising a photon emitter which emits at least one of ultraviolet and visible light into the medium to be treated upon interaction with an initiation energy;(2) applying the initiation energy from an energy source including at least one of x-rays, gamma rays, or an electron beam to the medium in order to provide said at least one of ultraviolet and visible light at one or more positions displaced from the energy modulation agent inside the medium to be treated; and(3) inducing from the light emitted into the medium a photoreactive change to the photoactivatable agent displaced from the energy modulation agent inside the medium to be treated.2. The method of claim 1 , wherein inducing a photoreactive change includes at least one or more of:photocuring the medium to be treated;photocuring an adhesive as the medium to be treated;sterilizing the medium to be treated;pasteurizing the medium to be treated;deactivating fermentation in the medium to be treated;reducing contaminants in waste water comprising said medium to be treated;activating a photoreactive drug in the medium to be treated; oractivating in vivo a photoreactive drug in the medium to be treated.3. The method of claim 1 ...

Подробнее
20-06-2013 дата публикации

METHOD FOR MANUFACTURING RUBBER COMPOSITION, RUBBER COMPOSITION, AND TIRE USING SAME

Номер: US20130158163A1
Автор: Fujiki Kumi, Yagi Reiko
Принадлежит: BRIDGESTONE CORPORATION

The present invention is a method for manufacturing a rubber composition containing a rubber component, a resin, a reinforcing filler and a crosslinking agent, and the method contains: a first step of adding the resin to the rubber component to produce a master batch; a second step of kneading the master batch with the reinforcing filler to produce a filled master batch; and a third step of kneading the filled master batch with the crosslinking agent, thereby providing a rubber composition having higher elasticity and large breaking elongation. 1. A method for manufacturing a rubber composition containing a rubber component , a resin , a reinforcing filler and a crosslinking agent , the method comprising: a first step of adding the resin to the rubber component to produce a master batch; a second step of kneading the master batch with the reinforcing filler to produce a filled master batch; and a third step of kneading the filled master batch with the crosslinking agent.2. The method for manufacturing a rubber composition according to claim 1 , wherein the first step is a step of producing a dry master batch.3. The method for manufacturing a rubber composition according to claim 1 , wherein the resin is a thermosetting resin.4. The method for manufacturing a rubber composition according to claim 3 , wherein the thermosetting resin is a phenolic thermosetting resin.5. The method for manufacturing a rubber composition according to claim 4 , wherein the phenolic thermosetting resin is at least one selected from a novolak type phenol resin claim 4 , a novolak type cresol resin claim 4 , a novolak type xylenol resin claim 4 , a novolak type resorcinol resin claim 4 , resins formed by modifying these resins with an oil claim 4 , and a resin composition containing a novolak type resorcin resin and a resole type phenol resin.6. The method for manufacturing a rubber composition according to claim 4 , wherein the phenolic thermosetting resin contains a methylene donor in an ...

Подробнее
27-06-2013 дата публикации

POLYCARBONATE NANOCOMPOSITES

Номер: US20130165547A1
Принадлежит: SABIC INNOVATIVE PLASTICS IP BV

Polycarbonate nanocomposites comprising a polycarbonate matrix having non-oxidized metal nanoparticles dispersed therein are disclosed. The polycarbonate nanocomposite is produced by a process comprising forming a reaction mixture comprising a dihydroxy compound, an activated carbonate, a metal precursor, and a solvent; and in-situ polymerizing the reaction mixture to form a nanocomposite comprising a polycarbonate matrix and metal nanoparticles dispersed therein. The metal precursor comprises a metal selected from a specified group. The nanocomposites have improved mechanical, optical, electrical and/or magnetic properties. Also disclosed are articles formed from such polycarbonate nanocomposites. 1. A method for producing a polycarbonate nanocomposite comprising:forming a reaction mixture comprising a dihydroxy compound, an activated carbonate, a metal precursor, and a solvent; andin-situ polymerizing the reaction mixture to form a polycarbonate nanocomposite comprising metal nanoparticles dispersed within a polycarbonate matrix;wherein the metal precursor is a salt comprising a metal selected from the group consisting of cobalt, rhodium, iridium, copper, silver, gold, platinum, palladium, iron, nickel, manganese, samarium, neodymium, praseodymium, gadolinium, titanium, zirconium, silicon, indium, scandium, yttrium, lanthanum, cerium, promethium, europium, terbium, holmium, erbium, thulium, ytterbium, and lutetium; andwherein the in-situ polymerizing step comprises maintaining the reaction mixture at a first temperature for a first period of time, and maintaining the reaction mixture at a second temperature for a second period of time, the first temperature being lower than the second temperature.2. The method of claim 1 , wherein the metal precursor comprises a metal selected from the group consisting of cobalt claim 1 , rhodium claim 1 , iridium claim 1 , copper claim 1 , silver claim 1 , gold claim 1 , platinum claim 1 , and palladium.3. The method of claim 1 , ...

Подробнее
04-07-2013 дата публикации

POROUS MEMBRANES HAVING A POLYMERIC COATING AND METHODS FOR THEIR PREPARATION AND USE

Номер: US20130171368A1
Принадлежит: GENERAL ELECTRIC COMPANY

A modified porous membrane comprising a polymer coating grafted to a porous membrane is described. The polymer coatings grafted to the porous membranes generally comprise a polymer of variable length of an electron beam (e-beam) reactive moiety, designated “poly-(A),” a linkage group that forms a bond between the between the poly-(A), and a functional B group available to react with a chemical group on a biomolecule, wherein the polymer coating on the porous membrane facilitates the immobilization of a biomolecule, such as DNA, RNA, a protein, and an antibody, on the porous membrane. The compositions find use in immunoassays, in vitro diagnostic tests, point of care tests, techniques for the isolation of a biomolecule from a biological sample, and other methods that require the immobilization of a biomolecule on a porous membrane. Methods of making these modified porous membranes are also disclosed. 1. A method for preparing a modified porous membrane comprising:a) providing an unmodified porous membrane;{'sub': 'x', 'b) immersing the porous membrane in a solution of a poly (A)-linkage-B;'}{'sub': x', 'x', 'x, 'c) wherein A is an electron beam (e-beam) reactive moiety, wherein poly (A)is a polymer of the e-beam reactive moiety and x is a number of A monomers present in the poly (A)polymer; and wherein the linkage forms a bond between the poly (A)polymer and a B group;'}d) exposing the porous membrane to e-beam radiation;e) drying the porous membrane, and thereby preparing a modified porous membrane.2. The method of claim 1 , wherein the membrane is selected from the group consisting of a nitrocellulose membrane claim 1 , a cellulose membrane claim 1 , a cellulose acetate membrane claim 1 , a regenerated cellulose membrane claim 1 , a nitrocellulose mixed ester membranes claim 1 , a polyethersulfone membrane claim 1 , a nylon membrane claim 1 , a polyolefin membrane claim 1 , a polyester membrane claim 1 , a polycarbonate membrane claim 1 , a polypropylene membrane ...

Подробнее
04-07-2013 дата публикации

INTERMESHING MIXING OF FILLER AND POLYMER SOLUTION MASTERBATCH

Номер: US20130172446A1
Принадлежит: BRIDGESTONE CORPORATION

A method includes: mixing a polymer cement and a filler to form a solution masterbatch; optionally drying the solution masterbatch to form a crumb polymer composition; mixing a low viscosity polymeric or oligomeric liquid into the solution masterbatch or crumb polymer composition; and intermeshing mixing the solution masterbatch or crumb polymer composition. 1. A method comprising:a) mixing a polymer cement and a filler to form a solution masterbatch;b) optionally, at least partially drying the solution masterbatch to form a crumb polymer composition;c) mixing a low viscosity polymeric or oligomeric liquid into the solution masterbatch or crumb polymer composition; andd) intermeshing mixing the solution masterbatch or crumb polymer composition.2. The method of claim 1 , comprising at least partially drying the solution masterbatch to form the crumb polymer composition.3. The method of claim 2 , further comprising dry mixing the crumb polymer composition prior to intermeshing mixing.4. The method of claim 1 , wherein the intermeshing mixing is performed in a twin-screw extruder or a tandem mixer.5. The method of claim 3 , wherein the low viscosity polymeric or oligomeric liquid is mixed into the crumb rubber at the dry mixing step.6. The method of claim 1 , wherein the low viscosity polymeric or oligomeric liquid is mixed into the solution masterbatch.7. The method of claim 2 , wherein the dry mixing is performed in a tangential mixer.8. The method of claim 1 , wherein the filler comprises silica.9. The method of claim 1 , wherein the silica is functionalized with a functional group that will interact with the polymer.10. The method of claim 1 , wherein the low viscosity polymeric or oligomeric liquid is a process oil selected from aromatic claim 1 , naphthenic claim 1 , or low PCA oil.11. The method of claim 1 , wherein the polymer is a diene elastomer.12. The method of claim 11 , wherein the diene elastomer is functionalized with a functional group that interacts ...

Подробнее
01-08-2013 дата публикации

Processes for Making Silane, Hydrophobated Silica, Silica Masterbatch and Rubber Products

Номер: US20130192746A1
Принадлежит:

The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide. Rubber products, particularly tires, compounded with the inventive silica masterbatch can be processed for a long time before scorching because the silica masterbatch provides a long scorch time. 1. A process for the preparation of silica masterbatch , comprising the steps of: (i) dissolving a trimethoxy silane coupling agent in a mixture of alcohol, acid and water to provide a trimethoxy silane coupling agent solution, wherein the amount of alcohol and water is at least 70% water by weight, and', '(ii) mixing the trimethoxy silane coupling agent solution with silica and adding a base to increase the pH to form a compatibilized silica slurry;, '(a) hydrophobtaining silica by(b) making a polymer latex and mixing the compatibilized silica slurry with the polymer latex;(c) coagulating the polymer latex from step (b) with a calcium salt to form a crumb, wherein carbon black is an optional ingredient but is not required for coagulating the polymer latex;(d) dewatering the coagulated crumb; and(e) drying the dewatered crumb.2. A silica masterbatch made according to the process of claim 1 , wherein the silica masterbatch contains calcium ...

Подробнее
01-08-2013 дата публикации

Plastics Colouration

Номер: US20130196176A1
Принадлежит: DATALASE LTD.

A method of imparting colour to a plastic substrate comprising applying to the substrate, or incorporating within the substrate, a diacetylene compound of general formula (I) wherein n=1 to 20; R=an optionally substituted Calkyl group which may contain heteroatoms; T=H, an optionally substituted Calkyl group which may contain heteroatoms or —(CH)—C(═O)-QR; Q=NH, CO, NHCONH, OCONH, COS, NHCSNH or NR, wherein m, Qand Rare independently selected from the same groups as n, Qand Rrespectively; Ris an optionally substituted Calkyl group which may contain heteroatoms; and irradiating the substrate to impart colour to the substrate. 2. The method according to claim 1 , wherein Qand Q(if present) are NH.3. The method according to claim 1 , wherein Rand R(if present) claim 1 , are saturated claim 1 , aliphatic hydrocarbon groups.4. The method according to claim 1 , wherein T=(CH)—C(═O)-QR.5. The method according to claim 1 , wherein n=8.6. The method according to claim 1 , wherein the diacetylene compound is initially applied to the plastic substrate or incorporated within the plastic substrate in an inactive form claim 1 , and is subsequently activated by an activating stimulus claim 1 , prior to being irradiated to impart colour to the plastic substrate.7. The method according to wherein the activating stimulus is heat or light.8. The method according to claim 1 , wherein the substrate is irradiated with light in the wavelength range 200 to 450 nm to impart colour to the substrate.9. The method according to claim 1 , wherein the plastic substrate further comprises a light absorbing agent.10. The method according to claim 1 , wherein the plastic substrate is polyethylene terephalate or a polyolefin claim 1 , or a mixture thereof.11. The method according to claim 1 , wherein the diacetylene compound is incorporated into the plastic substrate when the plastic substrate is in molten form.12. A coloured plastic substrate obtainable by a method according to .13. A compound ...

Подробнее
01-08-2013 дата публикации

HIGHLY CRYSTALLINE POLYETHYLENE

Номер: US20130197120A1
Принадлежит: The General Hospital Corporation

The present invention relates to methods for making highly crystalline polymeric material, for example, highly crystalline cross-linked and not cross-linked ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making additive-doped highly crystalline polymeric material using high pressure and high temperature crystallization processes, medical implants made thereof, and materials used therein. 1. A method of making a cross-linked and interlocked hybrid material for a medical device or implant , wherein the method comprises:a) mixing a polymeric material with an antioxidant to form a polymeric blend;b) compression molding of the polymeric blend to the counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material; andc) irradiating the interlocked hybrid material by electron beam radiation at an elevated temperature that is between about 80° C. and below the melting point of the polymeric blend, thereby forming cross-links in the polymeric blend and yielding a cross-linked and interlocked hybrid material for a medical device or implant, wherein: (i) the cross-linking strengthens the polymeric blend to minimize separation at the interface, (ii) the antioxidant provides resistance to post-irradiation oxidation, and (iii) the irradiation sterilizes the interface.2. The method according to claim 1 , wherein the second material is porous so as to permit bony in-growth into the medical device or implant.3. The method according to claim 2 , wherein the second material is metallic.4. The method according to claim 2 , wherein the second material is non-metallic.5. The method according to claim 1 , wherein the polymeric material is ultrahigh molecular weight polyethylene.6. The method according to claim 1 , wherein the anti-oxidant is an α-tocopherol.7. A method of making a medical device or implant comprising a cross-linked and interlocked hybrid ...

Подробнее
01-08-2013 дата публикации

METHOD OF MAKING CROSSLINKED POLYMERIC MATERIAL FOR ORTHOPAEDIC IMPLANTS

Номер: US20130197121A1
Принадлежит:

A method for making a crosslinked polymeric material for use in an orthopaedic device is described. The method may include the use of one or more crosslinking enhancers to enhance the crosslinking process. 1. A method of making crosslinked UHMWPE , comprising:contacting UHMWPE with a crosslinking enhancer; and crosslinking the UHMWPE by exposing the UHMWPE to a radiation dose from about 1 Mrad to about 50 Mrad.2. The method of claim 1 , wherein:the crosslinking enhancer includes at least one of the following, acrylic, methacrylic, ethacrylic, citraconic, maleic, malonic, mesaconic acids and ester and amide derivatives thereof.3. The method of claim 1 , wherein:the crosslinking enhancer includes at least one of the following, hydroxyethyl methacrylate, allyl acrylate, allyl methacrylate, diallyl fumarate, ethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, butanedioldimethacrylate, 1,6-hexanediol dimethacrylate, 1,4-butylene glycol dimethacrylate, trimethylolpropane-trimethacrylate, pentaerythritol tetramethacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate, tetraethylene glycol diacrylate, trimethylol propane triacrylate, trimethylol propane ethoxylate triacrylate, pentaerythritol tetraacrylate, diallyl phthalate, triallyl cyanurate, divinyl benzene, triallyl isocyanurate, diacetylene(2,4-hexadiyn-1,6-bis(n-butyl urethane), 2,4-hexadiyn-1,6-bis(ethyl urethane).4. The method of claim 1 , wherein: {'br': None, 'sub': 2', '2', 'n', '2, 'HC═CH—(CH)—CH═CH'}, 'the crosslinking enhancer includes a compound having the formula'}wherein n is from 10 to 26.6. The method of claim 1 , wherein:the crosslinking enhancer includes at least one vinyl ester having one or more non-terminal double bond.7. The method of claim 1 , wherein: {'br': None, 'sub': 2', 'n, 'HS—(CH)—SH'}, 'the crosslinking enhancer includes a compound having the formula'}wherein n is from 6 to 30.8. The method of claim 7 , wherein:the crosslinking enhancer includes at least ...

Подробнее
22-08-2013 дата публикации

METHOD FOR MANUFACTURING RUBBER COMPOSITION

Номер: US20130217802A1
Принадлежит: BRIDGESTONE CORPORATION

A method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers, a filler containing an inorganic filler (B), and a silane coupling agent (C) of a compound having a mercapto group, wherein the rubber composition is kneaded in multiple stages, in the first stage of kneading, the rubber component (A), all or a part of the inorganic filler (B), and all or a part of the silane coupling agent (C) are kneaded, then in the first stage or in the subsequent kneading stage, at least one compound selected from an acidic compound (D) and a basic compound (E) is added, and the highest temperature of the rubber composition in the final stage of kneading is from 60 to 120° C. 1. A method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers , a filler containing an inorganic filler (B) , and a silane coupling agent (C) of a compound having a mercapto group , wherein the rubber composition is kneaded in multiple stages , in the first stage of kneading , the rubber component (A) , all or a part of the inorganic filler (B) , and all or a part of the silane coupling agent (C) are kneaded , then in the first stage or in the subsequent kneading stage , at least one compound selected from an acidic compound (D) and a basic compound (E) is added , and the highest temperature of the rubber composition in the final stage of kneading is from 60 to 120° C.3. The method for producing a rubber composition according to claim 1 , wherein the acidic compound (D) is added in the kneading stage after the first stage of kneading.4. The method for producing a rubber composition according to claim 1 , wherein the basic compound (E) is added in the kneading stage after the first stage of kneading.5. The method for producing a rubber composition according to claim 1 , wherein the acidic compound (D) and the basic compound (E) ...

Подробнее
12-09-2013 дата публикации

LOW-EXTRACTABLE THIOXANTHONES

Номер: US20130237628A1
Принадлежит:

3-Esters and 3-amides of thioxanthone bearing alkyl chains of appropriate length and can be used as photoinitiators or sensitizers in photopolymerizable systems, in particular for the preparation of coatings compatible with the food use. 112.-. (canceled)14. The photopolymerizable composition of in which the derivatives of thioxanthone are compounds of formula I wherein R is ORor NRR.15. The photopolymerizable composition of wherein the derivatives of thioxanthone are compounds of formula I wherein R′ is hydrogen or R′ is in position 7 and is a methyl group.16. The photopolymerizable composition of wherein the derivatives of thioxanthone are compounds of formula I wherein R is ORand Ris a Clinear alkyl chain.17. The photopolymerizable composition of wherein the derivatives of thioxanthone are compounds of formula I wherein R is ORand Ris a Clinear alkyl chain.18. The photopolymerizable composition of wherein the derivatives of thioxanthone are compounds of formula I wherein R is NRRand Rand Rare isobutyl groups.19. The photopolymerizable composition of wherein the derivatives of thioxanthone are compounds of formula I wherein R is NRRand Rand Rare isobutyl groups.20. The photopolymerizable composition of further comprising at least one coinitiator.21. The photopolymerizable composition of wherein the coinitiator is (bis-N claim 20 ,N-[4-dimethylaminobenzoyl)oxyethylen-1-yl]-methylamine).22. The photopolymerizable composition of comprising from 70 to 98.9% by weight of at least one photopolymerizable compound claim 13 , from 0.1 to 5% by weight of at least one thioxanthone derivative of formula I and from 1 to 10% by weight at least one sensitizable photoinitiator.23. The photopolymerizable composition of wherein the sensitizable photoinitiator is 1-[4-[(4-benzoyl-phenyl)-thio]-phenyl] claim 22 , 2-methyl claim 22 , 2-[(4-methyl-phenyl)-sulfonyl]-propan-1-one.26. The method of wherein the derivatives of thioxanthone are compounds of formula I wherein R is ORor NRR.27 ...

Подробнее
19-09-2013 дата публикации

PROCESSES FOR MANUFACTURING ELECTRET FINE PARTICLES OR COARSE POWDER

Номер: US20130245151A1
Принадлежит: SAKURA COLOR PRODUCTS CORPORATION

The present invention provides a process for producing electret fine particles or coarse powder that can be uniformly electrified and exhibits excellent electrophoretic properties. 1. A process for producing electret fine particles , comprising emulsifying a fluorine-containing material that contains a vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene terpolymer in a liquid that is incompatible with the fluorine-containing material to obtain emulsified particles; and subjecting the emulsified particles to electron ray irradiation , radial ray irradiation , or corona discharge treatment.2. The process according to claim 1 , wherein the emulsified particles are processed into microcapsule particles claim 1 , and the microcapsule particles are subjected to electron ray irradiation claim 1 , radial ray irradiation claim 1 , or corona discharge treatment.3. The process according to claim 2 , wherein the microcapsule particles are dispersed in an electrophoretic medium to be subjected to electron ray irradiation claim 2 , radial ray irradiation claim 2 , or corona discharge treatment.4. The process according to claim 1 , wherein the emulsified particles contain a pigment.5. The process according to claim 1 , wherein the liquid that is incompatible with the fluorine-containing material serves as the electrophoretic medium.6. The process according to claim 1 , wherein the electret fine particles have a mean particle diameter of 0.02 to 20 μm.7. A process for producing electret coarse powder claim 1 , comprising subjecting a resin sheet containing a vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene terpolymer to electron ray irradiation claim 1 , radial ray irradiation claim 1 , or corona discharge treatment to process the resin sheet into an electret resin sheet; and pulverizing the electret resin sheet.8. The process according to claim 7 , wherein the electret coarse powder has a mean particle diameter of 0.02 to 3 mm.9. The process according to claim 7 ...

Подробнее
26-09-2013 дата публикации

METHOD FOR MANUFACTURING RUBBER COMPOSITION

Номер: US20130253090A1
Принадлежит: BRIDGESTONE CORPORATION

The present invention provides a method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers, a filler containing an inorganic filler (B), a silane coupling agent (C) and at least one vulcanization promoter (D) selected from thiurams, dithiocarbamate salts, thioureas and xanthate salts, wherein the rubber composition is kneaded in multiple stages, and in the first stage of kneading, the rubber component (A), all or a part of the inorganic filler (B), all or apart of the silane coupling agent (C) and the vulcanization promoter (D) are kneaded. The production method enables production of a rubber composition having a low-heat-generation property while successfully enhancing the coupling function activity of the silane coupling agent. 1. A method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers , a filler containing an inorganic filler (B) , a silane coupling agent (C) and at least one vulcanization promoter (D) selected from thiurams , dithiocarbamate salts , thioureas and xanthate salts , wherein the rubber composition is kneaded in multiple stages , and in the first stage of kneading , the rubber component (A) , all or a part of the inorganic filler (B) , all or a part of the silane coupling agent (C) and the vulcanization promoter (D) are kneaded.2. The method for producing a rubber composition according to claim 1 , wherein an organic acid compound (E) is further kneaded in the first stage of kneading claim 1 , and the number of molecules X of the organic acid compound (E) in the rubber composition in the first stage satisfies the following relational formula [1] relative to the number of molecules Y of the vulcanization promoter (D):{'br': None, 'i': X≦', 'Y, '0≦1.5×\u2003\u2003[1]'}3. The method for producing a rubber composition according to claim 1 , wherein the highest ...

Подробнее
10-10-2013 дата публикации

Method for Curing Resin with Ultrasound

Номер: US20130264189A1
Принадлежит:

A method for curing a resin includes the steps of placing the resin into a reaction vessel, drawing a vacuum in the reaction vessel, positioning the reaction vessel in a gaseous coupling fluid, and applying ultrasonic energy to the coupling fluid. 19-. (canceled)10. A method for processing resin , comprising:acoustically coupling resin to a source of ultrasonic energy; andapplying ultrasonic energy to the resin at ambient temperature and pressure.11. The method of wherein said coupling further comprises disposing the resin in a coupling fluid.12. The method of wherein said disposing further comprises disposing the resin in a gaseous coupling fluid.13. The method of wherein said disposing further comprises disposing the resin in a gaseous coupling fluid including ambient air.14. The method of wherein said coupling further comprises coupling resin including a substrate to the source of ultrasonic energy claim 10 , said applying further comprising applying the ultrasonic energy such that composite material is formed from the resin.15. The method of further comprising prior to said applying:disposing the resin in a reaction vessel with a mold; anddrawing a vacuum in the reaction vessel such that the resin is urged into the mold.16. The method of further comprising facilitating curing of the resin.17. The method of wherein said coupling further comprises coupling resin including a catalyst to the source of ultrasonic energy.18. Apparatus for curing resin claim 16 , comprising:a vessel for holding a coupling fluid at ambient temperature and pressure; anda source of ultrasonic energy disposed such that when resin is disposed in the coupling fluid, the resin is acoustically coupled with the source of ultrasonic energy.19. The apparatus of further comprising a reaction vessel for receiving resin therein and being capable of transmitting ultrasonic energy from the coupling fluid to the resin.20. The apparatus of further comprising a mold positionable in the reaction vessel ...

Подробнее
17-10-2013 дата публикации

Continuous Process For Esterifying Polymers Bearing Acid Groups

Номер: US20130274368A1
Принадлежит: CLARIANT FINANCE (BVI) LIMITED

The invention accordingly provides a continuous process for reacting synthetic poly(carboxylic acid)s (A) containing, per polymer chain, at least 10 structural repeat units of formula (I) 2. The process as claimed in claim 1 , in which the at least one poly(carboxylic acid) (A) is a homopolymer of acrylic acid claim 1 , methacrylic acid claim 1 , maleic acid or itaconic acid or a copolymer of two or more of these monomers.3. The process as claimed in claim 1 , in which the at least one poly(carboxylic acid) (A) is a copolymer of acrylic acid claim 1 , methacrylic acid claim 1 , maleic acid and/or itaconic acid claim 1 , and at least one further ethylenically unsaturated monomer.4. The process as claimed in claim 2 , in which the copolymers contain the structural units of the formula (I) derived from ethylenically unsaturated carboxylic acids in block claim 2 , alternating or random sequence.5. The process as claimed in claim 1 , in which the at least one poly(carboxylic acid) has a mean molecular weight of at least 700 g/mol claim 1 , determined by means of gel permeation chromatography against poly(styrenesulfonic acid) standards.6. The process as claimed in claim 1 , in which Rcontains 2 to 50 carbon atoms.7. The process as claimed in claim 1 , in which Ris an aliphatic radical.8. The process as claimed in claim 1 , in which Ris an aromatic radical claim 1 , and contains at least 6 carbon atoms.9. The process as claimed in claim 1 , in which the reaction mixture used for conversion contains 10 to 99% by weight of a mixture of water and a water-miscible organic solvent.10. The process as claimed in claim 1 , in which a solvent mixture of 1 to 60% by weight of a water-miscible organic solvent with water ad 100% by weight is used.11. The process as claimed in claim 1 , in which the water-miscible solvent is a polar protic organic liquid.12. The process as claimed in claim 11 , in which the water-miscible solvent is an alcohol.13. The process as claimed in claim 1 , ...

Подробнее
17-10-2013 дата публикации

METHOD FOR PRODUCING FLAME-PROOFED THERMOPLASTIC MOLDING COMPOUNDS

Номер: US20130274378A1
Принадлежит: BASF SE

The invention relates to a method for producing thermoplastic molding compounds, comprising: A) 40 to 99 wt % of at least one thermoplastic polymer, B) 1 to 60 wt % of a flame-proofing agent component containing an expandable graphite, and C) 0 to 60 wt % of further additives, by melt-mixing components A), B) and C) in a screw-type extruder, wherein the screw-type extruder, along the feed direction, comprises, in the following order, at least one dosing zone, a plastifying zone, a homogenizing zone, a second dosing zone, and a discharge zone, in that the dosing takes place into the screw-type extruder having the length L, wherein the length L is defined as the section starting with the first dosing unit for adding components A, B and/or C and ending, in the feed direction, at the discharge opening, a melt is generated after adding components A, B and C in the range of 0 liter to 0.15 liter in a first method step in the presence of component B1), and in a second method step, after the addition of component B1) in the range of 0.5 liter to 0.95 liter, component B1) is mixed into said melt, wherein said method offers technical advantages. 2. The process for the preparation of thermoplastic molding materials according to claim 1 , wherein claim 1 , in a second process step claim 1 , after addition of the component B1) in the region from 0.6 L to 0.9 L the mixing of component B1) into this melt is carried out.3. The process for the preparation of thermoplastic molding materials according to claim 1 , wherein claim 1 , in a second process step claim 1 , after addition of the component B1) in the region from 0.7 L to 0.85 L the mixing of component B1) into this melt is carried out.6. The process for the preparation of thermoplastic molding materials according to claim 1 , wherein the molding material comprises claim 1 , as component A) claim 1 , an ABS copolymer and/or an SAN copolymer and/or an ethylene-methacrylate copolymer.7. The process for the preparation of ...

Подробнее
24-10-2013 дата публикации

Methods For Water-Borne Thiol-Ene Polymerization

Номер: US20130281565A1
Принадлежит: CLARKSON UNIVERSITY

A method for suspension polymerization of thiol-ene particles comprising combining a plurality of thiol-ene precursor monomers with or without a solvent to create a first mixture, combining an emulsifier and water to create a second mixture, adding an initiator to either the first or second mixture, adding the first mixture and the second mixture to create a third mixture, agitating the third mixture to create a heterogeneous dispersion, and initiating polymerization of thiol-ene particles from the thiol-ene precursor monomers in the third mixture which is simultaneously agitated. 1. A method for suspension polymerization of thiol-ene particles , the method comprising the steps of:combining a plurality of thiol-ene precursor monomers to create a first mixture;combining an emulsifier and water to create a second mixture;adding an initiator to the first or second mixture;combining the first mixture and the second mixture to create a third mixture;agitating the third mixture to create a heterogeneous dispersion; andinitiating polymerization of thiol-ene particles from the thiol-ene precursor monomers in said third mixture, wherein said third mixture is simultaneously agitated.2. The method of claim 1 , wherein said first or second mixture comprises a solvent.3. The method of claim 1 , wherein said initiator comprises a solvent.4. The method of claim 1 , wherein said thiol-ene precursor monomers are selected from the group consisting of: a thiol compound claim 1 , an alkene claim 1 , an aklyne claim 1 , and combinations thereof.5. The method of claim 4 , wherein said thiol compound comprises one or more thiol groups.6. The method of claim 4 , wherein said claim 4 , wherein said alkene comprises one or more alkene groups.7. The method of claim 4 , wherein said claim 4 , wherein said alkyne comprises one or more alkyne groups.8. The method of claim 1 , wherein said second mixture further comprises a stabilizer.9. The method of claim 1 , wherein said polymerization is ...

Подробнее
31-10-2013 дата публикации

RESIN COMPOSITION FOR PHOTOIMPRINTING, PATTERN FORMING PROCESS AND ETCHING MASK

Номер: US20130288021A1
Принадлежит: MARUZEN PETROCHEMICAL CO., LTD.

A resin composition for photoimprinting, a cured product of the resin composition which is excellent in etching and heat resistance, and a pattern forming process using the resin composition are provided. The resin composition contains photocurable monomer (A) containing at least one carbazole compound of formula (I): 2. The resin composition according to claim 1 , further comprising:a viscosity-adjusting agent (D) in an amount of from 0.1 to 100 parts by weight per 100 parts by weight of a total weight of the photocurable monomer (A) and the photocurable monomer (B).3. The resin composition according to claim 2 , wherein the viscosity-adjusting agent (D) is a polymer comprising a carbazole skeleton.4. The resin composition according to claim 1 , further comprising a solvent (G) in an amount of from 0.5 to 30 claim 1 ,000 parts by weight per 100 parts by weight of a total weight of the photocurable monomer (A) and the photocurable monomer (B).5. A resin thin film for photoimprinting claim 1 , comprising a cured product having a film thickness of from 10 nm to 40 μm claim 1 , wherein the cured product comprises the resin composition according to .6. A pattern forming process claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'applying the resin composition according to to a substrate to form a coating film;'}bringing a pattern surface of a mold having a desired pattern into contact with a surface of the coating film and pressurizing them so that spaces in the desired pattern are filled with the resin composition;curing the resin composition by light irradiation, thereby obtaining a cured resin; andseparating the mold from the cured resin.7. The pattern forming process according to claim 6 , further comprising:etching the substrate using the cured resin as a mask.8. A fine structure obtained by a process comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'bringing a pattern surface of a mold having a desired pattern into contact with a ...

Подробнее
07-11-2013 дата публикации

METHOD OF MAKING CHARGE DISSIPATIVE SURFACES OF POLYMERIC MATERIALS WITH LOW TEMPERATURE DEPENDENCE OF SURFACE RESISTIVITY AND LOW RF LOSS

Номер: US20130295413A1
Принадлежит:

A method of making a charge dissipative surface of a dielectric polymeric material with tunable (selectable) surface resistivity, comprises the step of controllably carbonizing the surface of the polymeric material in a vacuum environment by bombarding the polymeric surface with an ion beam of rare gas ions, the energy level of the ion source being from 2.5 to 30 keV, in the fluence range 1E16-5E17 ion/cmso as to reach a surface resistivity in the static dissipative range of 1E6 to 1E9 ohm/square at room temperature, with a temperature dependence of less than three orders of magnitude between −150° C. and +150° C., while having no impact on the RF performance of the material, with high RF power handling capability, and with tunable thermo-optical properties of the surface, including negligible impact on the thermo-optical properties and RF performance of the material, if required by applications.

Подробнее
07-11-2013 дата публикации

Method For Modifying Polymers Comprising Hydroxyl Groups

Номер: US20130296457A1
Принадлежит: CLARIANT FINANCE (BVI) LIMITED

The invention relates to a method for reacting polymers (A) comprising hydroxyl groups and which have repetitive structural units of general formula (I), wherein D represents a direct bond between the polymer backbone and a hydroxyl group, a C- to C-alkene group, a C- to C-arylene group, an oxyalkylene group of formula —O—R—, an ester group of formula —C(O)—O—R— or an amide group of formula —C(O)—N(R)R—, Rrepresents a C- to C-alkene group, Rrepresents hydrogen or an optionally substituted C- to C-alkyl group and n represents a number between 3 and 5000, with carboxylic acids B1) of formula (II) or carboxylic acid esters B2) of formula (III) R—COOH (II) R—COOR(III), wherein Rrepresents a hydrocarbon group having 2 to 50 C atoms, and Rrepresents a CC-alkyl group, in which the polymers (A); comprising the hydroxyl groups are exposed to microwaves in the presence of carboxylic acids of formula (II) or carboxylic acid esters of formula (III) and in the presence of water. The reaction mixture is heated to temperatures over 100° C. by microwave rays. 2. The process as claimed in claim 1 , in which the hydroxyl-bearing polymer comprises claim 1 , as well as the structural units of the formula (I) claim 1 , additional structural units derived from further ethylenically unsaturated monomers.3. The process as claimed in claim 1 , in which the structural units of the formula (I) derive from vinyl alcohol.4. The process as claimed in claim 1 , wherein the hydroxyl-bearing polymer also comprises claim 1 , as well as the structural units of the formula (I) claim 1 , structural units derived from vinyl acetate.5. The process as claimed in claim 1 , in which Ris an alkyl radical.6. The process as claimed in claim 1 , in which the carboxylic acid B1) or the carboxylic ester B2) is a mixture of at least one carboxylic acid and at least one dicarboxylic acid or a mixture of at least one carboxylic ester and at least one dicarboxylic ester.7. The process as claimed in claim 1 , in which ...

Подробнее
07-11-2013 дата публикации

Continuous Method For Reacting Polymers Carrying Acid Groups, With Amines

Номер: US20130296458A1
Принадлежит: CLARIANT FINANCE (BVI) LIMITED

The invention relates to a method for reacting synthetic poly(carboxylic acids) (A), containing at least 10 repetitive structural units of formula (I), wherein Rrepresents hydrogen, a Cto C-alkyl group or a group of formula —CH—COOH, Rrepresents hydrogen or a Cto C-alkyl group, Rrepresents hydrogen, a Cto Calkyl group or —COOH or with amines (B) of general formula (II) HNRR(II), wherein Rrepresents a hydrocarbon group having 3 to 50 C atoms, which can be substituted or can contain heteroatoms, and Rrepresents hydrogen or a hydrocarbon group having 1 to 50 C atoms, which can be substituted or can contain heteroatoms, or Rand Rtogether form a ring with the nitrogen atom to which they are bound. According to the invention, a reaction mixture containing at least one synthetic poly(carboxylic acid) (A) and at least one amine of formula (II) in a solvent mixture which contains water, and with respect to the weight of the solvent mixture, 0.1-75 wt.-% of at least one organic solvent which can be mixed with water, said organic solvent having a dielectric constant of at least 10 when measured at 25° C., is introduced into a reaction path and is exposed to microwave radiation when it flows through the reaction path. Said reaction mixture is heated to temperatures over 100° C. by the microwave radiation in the reaction path. 2. The process as claimed in claim 1 , in which the poly(carboxylic acid) (A) is a homopolymer of acrylic acid claim 1 , methacrylic acid claim 1 , crotonic acid claim 1 , maleic acid claim 1 , fumaric acid or itaconic acid or a copolymer of two or more of these monomers.3. The process as claimed in claim 1 , in which the poly(carboxylic acid) (A) is a copolymer of acrylic acid claim 1 , methacrylic acid claim 1 , crotonic acid claim 1 , maleic acid claim 1 , fumaric acid and/or itaconic acid claim 1 , and at least one further ethylenically unsaturated monomer.4. The process as claimed in one or more of to claim 1 , in which the poly(carboxylic acid) has a ...

Подробнее
07-11-2013 дата публикации

METHOD OF PRODUCING A RUBBER MIX WITH LARGE-AREA REINFORCING FILLERS

Номер: US20130296482A1
Принадлежит: BRIDGESTONE CORPORATION

A method of producing rubber mixes, including a step of mixing a reinforcing filler, having a surface area of over 220 m/g and a particle size of less than 0.1 μm, with a cross-linkable, unsaturated-chain polymer base. The mixing step is performed in the aqueous phase, in the presence of a surface-active agent of molecular formula (I) (RCONRCHRCOO)nX (I) where: Ris an aliphatic group C-CRis H or an aliphatic group C-CRis H or an aliphatic or aromatic group C-CX is a metal cation n is an integer of 1 to 3. 111-. (canceled)12. A method of producing rubber mixes , comprising a step of mixing a reinforcing filler with a cross-linkable , unsaturated-chain polymer base; said method being characterized in that said mixing step is performed in the aqueous phase , and said reinforcing filler has a surface area of over 220 m/g , and a particle size of less than 0.1 μm; said aqueous phase comprising curing agents and a surface-active agent of molecular formula (I){'br': None, 'sub': 1', '2', '3, 'sup': −', 'n+, 'i': 'n', '(RCONRCHRCOO)X'}where:{'sub': 1', '4', '20, 'Ris an aliphatic group C-C'}{'sub': 2', '1', '8, 'Ris H or an aliphatic group C-C'}{'sub': 3', '1', '8, 'Ris H or an aliphatic or aromatic group C-C'}X is a metal cationn is an integer of 1 to 3.13. A method of producing rubber mixes claim 12 , as claimed in claim 12 , characterized in that said mixing step comprises adding an aqueous suspension of reinforcing filler to a latex of the cross-linkable claim 12 , unsaturated-chain polymer base.14. A method of producing rubber mixes claim 12 , as claimed in claim 12 , characterized in that the reinforcing filler is silica.15. A method of producing rubber mixes claim 12 , as claimed in claim 12 , characterized in that the aliphatic group Rcomprises a double bond.16. A method of producing rubber mixes claim 15 , as claimed in claim 15 , characterized in that the surface-active agent of molecular formula (I) is the compound CH(CH)CHCH(CH)CONHCHCOOX or the compound CHCH(CH ...

Подробнее
14-11-2013 дата публикации

Fluoropolymer Dispersion Treatment Employing Light and Oxygen Source in Presence of Photocatalyst to Reduce Fluoropolymer Resin Discoloration

Номер: US20130303652A1
Принадлежит: E I DU PONT DE NEMOURS AND COMPANY

Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises: 1. Process for reducing thermally induced discoloration of fluoropolymer resin , said fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin , said process comprising:exposing the aqueous fluoropolymer dispersion to light having a wavelength of 10 nm to 760 nm in the presence of an oxygen source and photocatalyst.2. The process of wherein said process reduces thermally induced discoloration by at least about 10% as measured by % change in L* on the CIELAB color scale.3. The process of wherein said aqueous fluoropolymer dispersion contains hydrocarbon surfactant which causes said thermally induced discoloration.4. The process of wherein said fluoropolymer dispersion is polymerized in the presence of hydrocarbon surfactant.5. The process of wherein said photocatalyst is heterogeneous photocatalyst.6. The process of wherein said heterogeneous photocatalyst is selected from form the group consisting of titanium dioxide and zinc oxide.7. The process of wherein said oxygen source is selected from the group consisting of air claim 1 , oxygen rich gas claim 1 , ozone containing gas and hydrogen peroxide.8. The process of wherein said oxygen source comprises ozone containing gas.9. The process of wherein said oxygen source is hydrogen peroxide.10. The process of wherein the solids content of said dispersion during said exposing to light is about 2 weight % to about 30 weight %.11. The process of wherein said exposing the aqueous fluoropolymer dispersion to light is carried out at a temperature of about 5° C. ...

Подробнее
12-12-2013 дата публикации

Carbon black-containing polyamide masterbatch composition and functional nylon fabric with filaments made therefrom

Номер: US20130330535A1
Принадлежит: TAIWAN TEXTILE RESEARCH INSTITUTE

A carbon black-containing polyamide masterbatch composition is provided. The carbon black-containing polyamide masterbatch composition includes a polyamide compounded with an admixture of carbon black and a water-soluble polyamide. The water-soluble polyamide is a copolymer of caprolactam, ethylene glycol bis(2-aminoethyl)ether or ethylene glycol bis(3-aminopropyl)ether, and 5-sulfoisophthalic acid monosodium salt.

Подробнее
19-12-2013 дата публикации

THERMOPLASTIC POLYMER POWDER

Номер: US20130337265A1
Автор: FARMER Benjamin
Принадлежит:

A method of modifying a thermoplastic polymer powder. A suspension of thermoplastic polymer powder and reinforcement elements in a liquid is heated within a reaction chamber so that the thermoplastic polymer powder becomes softened and the reinforcement elements migrate into the softened thermoplastic polymer powder to form modified thermoplastic polymer powder. The modified thermoplastic polymer powder is then separated from the liquid. The reinforcement elements have an electromagnetic moment and are subjected to an electromagnetic field as the suspension is heated. The interaction of the electromagnetic field with the electromagnetic moment of the reinforcement elements causes the reinforcement elements to become aligned with the electromagnetic field before they migrate into the powder. 1. A method of modifying a thermoplastic polymer powder , the method comprising:providing a suspension of thermoplastic polymer powder and reinforcement elements in a liquid,heating the suspension within a reaction chamber so that the thermoplastic polymer powder becomes softened and the reinforcement elements migrate into the softened thermoplastic polymer powder to form modified thermoplastic polymer powder; andseparating the modified thermoplastic polymer powder from the liquid,wherein the reinforcement elements have an electromagnetic moment and the method further comprises applying an electromagnetic field to the suspension within the reaction chamber as it is heated, the interaction of the electromagnetic field with the electromagnetic moment of the reinforcement elements causing the reinforcement elements to become aligned with the electromagnetic field before they migrate into the powder.2. The method of wherein the reaction chamber has an inlet and an outlet claim 1 , and the method is a continuous process in which material is simultaneously fed into the reaction chamber via the inlet and out of the reaction chamber via the outlet as the suspension within the chamber is ...

Подробнее
19-12-2013 дата публикации

Polymeric materials

Номер: US20130338308A1
Принадлежит: Colomatrix Holdings Inc

A method of introducing an additive, for example a dye, into a polymeric material comprises using a liquid formulation comprising the additive, a vehicle and an active compound added to increase the melt viscosity of the polymeric material. The active compound may be a multi-functional anhydride. The liquid formulation is suitably contacted with the polymeric material in a melt processing apparatus and suitably a cavity transfer mixer is used in the process. A fibre is suitably subsequently produced.

Подробнее
26-12-2013 дата публикации

PROCESS FOR PREPARING A MASTERBATCH IN THE LIQUID PHASE

Номер: US20130345348A1

The invention relates to a process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomer latexes and on one or more fillers, comprising the following successive stages: 1. A process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomer latexes and on one or more fillers , comprising:preparing a stable and homogeneous aqueous dispersion by mixingone or more diene elastomer latexes withone or more stable aqueous dispersions of one or more fillers,homogenizing the aqueous dispersion,coagulating within the aqueous dispersion the said diene elastomer latex or latexes with the filler or fillers by supplying mechanical energy,recovering the coagulum,drying the recovered coagulum in order to obtain the masterbatch.2. The process according to claim 1 , wherein the recovering the coagulum is carried out by a filtering operation.3. The process according to claim 1 , wherein the recovering the coagulum is carried out by a centrifuging operation.4. The process according to wherein the diene elastomer latex is a natural rubber latex.5. The process according to claim 4 , wherein the diene elastomer latex is a concentrated natural rubber latex.6. The process Process according to claim 1 , wherein the filler coagulates spontaneously with the said diene elastomer latex or latexes.7. The process according to claim 6 , wherein the filler is carbon black.8. The process according to claim 6 , wherein the filler is hydrophobized silica.9. The process according to claim 6 , wherein the aqueous dispersion comprises one or more surfactants.10. The process according to claim 9 , wherein the surfactant is an anionic surfactant.11. The process according to claim 10 , wherein the surfactant is sodium dodecyl sulphate.12. The process according to claim 9 , wherein the concentration of surfactant in the aqueous dispersion is strictly greater than 0.01% by weight claim 9 , with respect to the total weight of the aqueous ...

Подробнее
02-01-2014 дата публикации

POLYMERIC MATERIALS

Номер: US20140005312A1
Принадлежит: Colormatrix Holdings, Inc.

A method of introducing an additive into a polymeric material comprises using a liquid formulation comprising an additive, for example a colourant, and a vehicle comprising an aliphatic or aromatic tri- or di-carboxylic acid covalently linked by ester bonds to two or more chains. The method involves contacting the liquid formulation with the polymeric material in a melt processing apparatus. The cavity transfer mixer may be used in the process. A fibre is suitably subsequently produced. 1. A method of introducing an additive into a polymeric material comprising:a) selecting a liquid formulation comprising an additive and a vehicle comprising an aliphatic or aromatic tri- or di-carboxylic acid covalently linked by ester bonds to two or more chains;b) contacting the liquid formulation with said polymeric material in a melt processing apparatus.2. A method according to claim 1 , wherein said chains comprise optionally-substituted linear or branched alkyl groups3. A method according to claim 1 , wherein said chains comprise linear or branched alkyl groups with between 5 and 15 carbon atoms claim 1 , which are unsubstituted; or said chains comprise polyalkoxylated fatty alcohol chains; or said chains comprise citric acid esters.7. A method according to claim 6 , wherein said vehicle comprises a trimellitate.8. A method according to claim 1 , wherein said vehicle has a boiling point of greater than 285° C. claim 1 , and a molecular weight in the range 500 to 4200 g/mol.9. A method according to claim 1 , wherein said liquid formulation is dosed into said polymeric material when the polymeric material is in a molten state claim 1 , and said liquid formulation is injected at a pressure in the range 5 to 120 bar into the polymeric material claim 1 , wherein a mixing means is provided for facilitating mixing of the liquid formulation and polymeric material.10. A method according to claim 9 , wherein said mixing means comprises a cavity transfer mixer.11. A method according to ...

Подробнее
30-01-2014 дата публикации

HIGH PERMEABILITY SUPERABSORBENT POLYMER COMPOSITIONS

Номер: US20140031498A1
Принадлежит: Evonik Stockhausen, LLC

The invention relates to absorptive, crosslinked polymeric composition that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive crosslinked polymer may be coated with a polymeric coating, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which have a high capacity and a high gel bed permeability. 161-. (canceled)62. A process of treating superabsorbent polymer particles with finely-divided , water-insoluble inorganic metal salt comprising the steps of:supplying superabsorbent polymer particles comprisinga) from about 55% to about 99.9% by weight of polymerizable unsaturated acid group containing monomer, based on the superabsorbent polymer; andb) from about 0.001% to about 5% by weight of internal crosslinking agent based on the polymerizable unsaturated acid group containing monomer; wherein the superabsorbent polymer has a degree of neutralization of greater than about 25%; wherein elements a) and b) are polymerized and prepared into superabsorbent polymer particles and further comprising the following surface additives to form surface treated superabsorbent polymer particlesi) from about 0.001% to about 5% by weight of surface crosslinking agent based on the superabsorbent polymer composition;preparing a first solution of a first inorganic metal salt comprising aluminum sulfate;adding to and mixing with the first solution of b) a second solution of a second inorganic metal salt comprising trisodium phosphate, wherein the first solution and second solution react on mixing to precipitate a third water-insoluble metal salt form a water-insoluble metal salt slurry;optionally oxidizing the metal of the water-insoluble metal salt slurry to a higher valence state; andapplying the water-insoluble metal salt slurry to the superabsorbent polymer particles without isolation and drying of the water-insoluble metal salt slurry, and ...

Подробнее
06-02-2014 дата публикации

Preparation of Polyphosphazene Microspheres

Номер: US20140039121A1
Принадлежит:

Methods of producing polyphosphazene microspheres comprising admixing aqueous solutions of a water-soluble polyphosphazene and an organic amine, or salt thereof, are disclosed. 1. A method of producing polyphosphazene microspheres comprising: contacting an aqueous solution containing a water-soluble polyphosphazene with an aqueous solution containing an organic amine or salt thereof , said organic amine crosslinking said polyphosphazene to produce polyphosphazene microspheres.2. The method of claim 1 , wherein said aqueous solution containing a water-soluble polyphosphazene is admixed with said aqueous solution containing an organic amine or salt thereof claim 1 , over an extended period of time.3. The method of claim 1 , further comprising adding water or aqueous buffer solution to stabilize the microspheres.4. The method of claim 1 , further comprising recovering said polyphosphazene microspheres.5. The method of wherein said organic amine is spermine.6. The method of wherein said polyphosphazene is poly[di(carboxylatophenoxy)phosphazene].7. The method of wherein said microspheres have diameters of from about 1 μm to about 10 μm. This application is a continuation of U.S. application Ser. No. 11/982,028, filed Oct. 31, 2007; which is a continuation of U.S. application Ser. No. 10/715,787, filed Nov. 18, 2003; which claims priority to U.S. Provisional Application Ser. No. 60/428,310, filed Nov. 22, 2002; the disclosures of each of which are hereby incorporated by reference in their entireties.Polymer microspheres find numerous uses both in the life sciences and in industrial applications. Kawaguchi, H., 25, pp. 1171-1210, 2000. Medical and biochemical applications include their use as pharmaceutical carriers for a variety of prophylactic and/or therapeutic agents; their use in biospecific separation, immunoassay and affinity diagnosis; and their use as immunoadjuvants. Microspheres also attract attention as materials for optical, opto-electrical, and rheological ...

Подробнее
13-02-2014 дата публикации

OLEFIN METATHESIS FOR EFFECTIVE POLYMER HEALING VIA DYNAMIC EXCHANGE OF STRONG CARBON-CARBON BONDS

Номер: US20140045997A1
Автор: Guan Zhibin, Lu Yixuan
Принадлежит:

A method of preparing a malleable and/or self-healing polymeric or composite material is provided. The method includes providing a polymeric or composite material comprising at least one alkene-containing polymer, combining the polymer with at least one homogeneous or heterogeneous transition metal olefin metathesis catalyst to form a polymeric or composite material, and performing an olefin metathesis reaction on the polymer so as to form reversible carbon-carbon double bonds in the polymer. Also provided is a method of healing a fractured surface of a polymeric material. The method includes bringing a fractured surface of a first polymeric material into contact with a second polymeric material, and performing an olefin metathesis reaction in the presence of a transition metal olefin metathesis catalyst such that the first polymeric material forms reversible carbon-carbon double bonds with the second polymeric material. Compositions comprising malleable and/or self-healing polymeric or composite material are also provided. 1. A method of preparing a malleable and/or self-healing polymeric or composite material , comprisingproviding at least one alkene-containing polymer,combining the polymer with at least one homogeneous or heterogeneous transition metal olefin metathesis catalyst to form a polymeric or composite material, andperforming an olefin metathesis reaction on the polymer so as to form reversible carbon-carbon double bonds in the polymer.2. The method of claim 1 , wherein the polymer is polybutadiene claim 1 , polyisoprene claim 1 , butyl rubber claim 1 , polynorbornene claim 1 , polycyclooctene claim 1 , polycyclooctadiene claim 1 , unsaturated polyester claim 1 , polystyrene-b-polybutadiene claim 1 , polystyrene-b-polybutadiene-b-polystyrene claim 1 , a random/block/graft copolymer containing alkene functionality on either polymer backbone or side chain claim 1 , a modification thereof claim 1 , or a combination thereof.3. The method of claim 1 , wherein ...

Подробнее
06-03-2014 дата публикации

ANTISTATIC FOAM AGENT AND ANTISTATIC MASTER BATCH FOR PRODUCING FOAMED PLASTIC ITEMS

Номер: US20140066558A1
Автор: Keilert Jürgen
Принадлежит:

A foaming agent or a master batch comprising a foaming agent for producing hollow-shaped foamed plastics using a blow-molding process containing an antistatic agent. The antistatic agent can comprise a fatty acid ester, an ethoxylated amine, or an alkyl sulfonate. In addition, the invention comprises a method for producing hollow-shaped, foamed plastics using the antistatic agent/master batch. The use of the antistatic agent results in a reproducible, stable production of hollow foamed plastic products such as bottles or yogurt cups with a better cellular structure, which produces a soft, rough surface of the products with a better feel. 1. A foaming agent for producing foamed plastic items using a blow-molding process , comprising an antistatic agent.3. The foaming agent for producing foamed plastic items of claim 1 , wherein the foaming agent comprises at least one of the following:a. a sodium hydrogen carbonate;b. a carboxylic acid; orc. a solid acting as a nucleation agent.4. A master batch comprising a foaming agent for producing foamed plastic items and an antistatic agent.5. The master batch of claim 4 , wherein the master batch comprises at least one of the following:a. a styrene-based carrier; orb. a polyolefin-based carrier.6. The master batch of claim 4 , wherein the master batch comprises a fatty acid ester at 0.2 percent to 0.8 percent.7. A method for producing foamed plastic items claim 5 , wherein a thermoplastic material is mixed in an extruder with the master batch of claim 5 , and the mixture is molded in a shaping mold.8. A method for producing foamed plastic items claim 6 , wherein a thermoplastic material is mixed in an extruder with the master batch of claim 6 , and the mixture is molded in a shaping mold.9. A plastic container formed by using the foaming agent for producing foamed plastic items of .10. A plastic container formed by using the master batch for producing foamed plastic items of .11. A plastic container formed by using the method ...

Подробнее
20-03-2014 дата публикации

FLUORORESIN COMPOSITE MATERIAL, COOKING UTENSIL, COOKER, ROLLER FOR OA APPARATUS, BELT FOR OA APPARATUS, AND PROCESSES FOR PRODUCING THESE

Номер: US20140077419A1
Принадлежит: SUMITOMO ELECTRIC FINE POLYMER, INC.

A fluorocarbon resin composite includes a fluorocarbon resin layer on a base, in which a fluorocarbon resin constituting the fluorocarbon resin layer is crosslinked by electron beam irradiation, and the base has a desired shape obtained by machining. The fluorocarbon resin is composed of a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer, polytetrafluoroethylene, or a mixture of the tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer and polytetrafluoroethylene. A fluorocarbon resin composite, cookware, and a roller and a belt for use in office automation equipment are each produced by applying an uncrosslinked fluorocarbon resin on a base, subjecting the fluorocarbon resin to electron beam irradiation in a low-oxygen atmosphere to crosslink the fluorocarbon resin while the temperature of the fluorocarbon resin is maintained at a temperature equal to or higher than the melting point of the fluorocarbon resin, and machining the base into a desired shape. There is also provided methods for producing them. 119-. (canceled)20. A method for producing a roller or a belt for use in office automation equipment , comprising the steps of placing a die (outlet) of an extruder in a low-oxygen atmosphere; extruding an uncrosslinked fluorocarbon resin from the die of the extruder onto a circular base; and subjecting the fluorocarbon resin to electron beam irradiation in the low-oxygen atmosphere to crosslink the fluorocarbon resin before the temperature of the fluorocarbon resin is decreased to a temperature equal to or lower than the melting point of the fluorocarbon resin.21. (canceled)22. The method for producing a roller or a belt for use in office automation equipment according to claim 20 , further comprising after the uncrosslinked fluorocarbon resin is heated to a temperature equal to or higher than the melting point of the fluorocarbon resin and then subjected to electron beam irradiation in a low-oxygen atmosphere to crosslink the fluorocarbon resin ...

Подробнее
20-03-2014 дата публикации

Flame-retardant polyamides with pale color

Номер: US20140080949A1
Принадлежит: BASF SE

Thermoplastic molding compositions comprising A) from 10 to 99.8% by weight of a thermoplastic polyamide, B) from 0.1 to 60% by weight of red phosphorus, C) from 0.01 to 4% by weight of a Cu(I) salt or Ag(I) oxide or Cu(I) complex or Ag(I) salt or Cu(I) oxide or Ag(I) complex, or a mixture of these, D) from 0 to 40% by weight of an impact modifier, and E) from 0 to 60% by weight of further additional substances, where the total of the percentages by weight of A) to E) is 100%.

Подробнее
27-03-2014 дата публикации

Processes for Making Silane, Hydrophobated Silica, Silica Masterbatch and Rubber Products

Номер: US20140083598A9
Принадлежит:

The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide. Rubber products, particularly tires, compounded with the inventive silica masterbatch can be processed for a long time before scorching because the silica masterbatch provides a long scorch time. 1. A process for the preparation of silica masterbatch , comprising the steps of: (i) dissolving a trimethoxy silane coupling agent in a mixture of alcohol, acid and water to provide a trimethoxy silane coupling agent solution, wherein the amount of alcohol and water is at least 70% water by weight, and', '(ii) mixing the trimethoxy silane coupling agent solution with silica and adding a base to increase the pH to form a compatibilized silica slurry;, '(a) hydrophobating silica by(b) making a polymer latex and mixing the compatibilized silica slurry with the polymer latex;(c) coagulating the polymer latex from step (b) with a calcium salt to form a crumb, wherein carbon black is an optional ingredient but is not required for coagulating the polymer latex;(d) dewatering the coagulated crumb; and(e) drying the dewatered crumb.2. A silica masterbatch made according to the process of claim 1 , wherein the silica masterbatch contains calcium ...

Подробнее
10-04-2014 дата публикации

SUGAR CHAIN-CAPTURING SUBSTANCE AND USE THEREOF

Номер: US20140099507A1
Принадлежит:

The present invention provides a method for preparing a sample characterized by binding a substance A containing a hydrazide group to a sugar chain and/or a sugar derivative via hydrazone formation between the hydrazide group of the substance A and the reducing end of the sugar chain and/or the sugar derivative thereby to enable the separation and purification of the sugar chain and/or the sugar derivative for an analytical sample from a biological sample containing the sugar chain and/or the sugar derivative by a simple operation. 154-. (canceled)58. The particle according to claim 55 , wherein the particle has an average particle diameter of equal to or more than 0.1 and equal to or less than 500 μm.59. The particle according to claim 55 , wherein the particle has a hydrazide group of a dry weight of not less than 100 nmol per 1 mg.60. The particle according to claim 55 , wherein the particle is stable at a pH of 3 to 8.61. The particle according to claim 55 , wherein the particle is stable under pressure of not more than 1 MPa.66. A method for preparing a sample claim 55 , wherein the particle according to is bonded to a sugar chain and/or a sugar derivative via a hydrazone bond between the hydrazide group of the particle and the reducing end of the sugar chain and/or the sugar derivative.67. A method for preparing a sample claim 55 , wherein a hydrazone bond is dissociated and a sugar chain and/or a sugar derivative is released by treating the particle according to bonded to the sugar chain and/or the sugar derivative under acidic conditions. The present invention relates to a method for preparing a sample using a prescribed sugar chain-capturing substance, and an analytical sample obtained by the method. The present invention relates to a method for preparing a sugar chain-capturing substance, a compound used for the method and a polymer obtained by polymerizing the compound. Further, the present invention relates to the use of the sugar chain-capturing ...

Подробнее
07-01-2016 дата публикации

HALOGENATED POLYMER COMPOSITE COMPOSITION, ITS MANUFACTURING PROCESS AND ITS USE

Номер: US20160002434A1
Принадлежит:

The present invention relates to a halogenated polymer composite composition that encapsulates a mineral filler. In particular the present invention relates to a polymer composite composition comprising at least one halogen containing polymer and at least one mineral filler, characterized that the halogen containing polymer and the mineral filler are both in form of a dispersion in aqueous phase during the mixing of the halogen containing polymer and the mineral filler. More particularly the present invention relates to a manufacturing method for a polymer composite composition comprising the steps of mixing of at least one halogen containing polymer with at least one mineral filler and drying the mixture of previous step wherein the halogen containing polymer and the mineral filler in step are in form of a dispersion in aqueous phase. 1. A polymer composite composition comprising:a) at least one halogen containing polymer,b) at least one mineral filler,wherein the halogen containing polymer and the mineral filler are both in form of a dispersion in aqueous phase during the mixing of the halogen containing polymer and the mineral filler.2. The polymer composite composition according to wherein the composition is a dry powder comprising less than 3 wt % humidity.3. The polymer composite composition according to wherein the halogen containing polymer is a thermoplastic polymer having a glass transition temperature as measured by differential scanning calorimetry of at least 40° C.4. The polymer composite composition according to wherein the halogen containing polymer was synthesized by suspension polymerization claim 1 , micro-suspension polymerization or emulsion polymerization in aqueous phase.5. The polymer composite composition according to wherein the halogen is chlorine or fluorine.6. The polymer composite composition according to wherein the halogen is chlorine.7. The polymer composite composition according to wherein the halogen containing polymer is a homo- ...

Подробнее
05-01-2017 дата публикации

MELT POLYMERIZATION POLYCARBONATE QUENCHING

Номер: US20170002139A1
Автор: Fernandez Ignacio Vic
Принадлежит: Sabic Global Technologies B.V.

In an embodiment, a melt polymerization process comprises melt polymerizing reactants in at least two polymerization units, in the presence of a catalyst composition to form polymerized polycarbonate; adding a quencher composition comprising one or both of a liquid quencher composition and a solid quencher composition; mixing the quencher composition with the polymerized polycarbonate for a period of time of greater than or equal to 5 seconds prior to the addition to the polymerized polycarbonate of any additives having a reactive OH group or reactive ester group; directing the polymerized polycarbonate to an extruder; and directing an additive to the extruder. 1. A melt polymerization process comprising:melt polymerizing reactants in at least two polymerization units, in the presence of a catalyst composition to form polymerized polycarbonate, wherein the catalyst composition comprises a catalyst comprising a source of one or both of alkali and alkaline earth metal ions; combining a liquid carrier and the quencher in a quencher vessel to form the liquid quencher composition or melting the quencher in the quencher vessel to form the liquid quencher composition, and adding the liquid quencher composition to the polymerized polycarbonate at a pressure of greater than or equal to 2 bars; and', 'adding the solid quencher composition comprising the quencher to the polymerized polycarbonate in an extruder;, 'adding a quencher composition comprising one or both of a liquid quencher composition and a solid quencher composition by a method comprising one or both of'}mixing the quencher composition with the polymerized polycarbonate for a period of time of greater than or equal to 5 seconds prior to the addition to the polymerized polycarbonate of any additives having a reactive OH group or reactive ester group;filtering the polymerized polycarbonate;directing the polymerized polycarbonate to an extruder;directing an anthraquinone colorant, a phenolic antioxidant, a UV ...

Подробнее
05-01-2017 дата публикации

Nanocellular foam with solid flame retardant

Номер: US20170002162A1
Принадлежит: Dow Global Technologies LLC

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.

Подробнее
05-01-2017 дата публикации

SURFACE TREATMENT OF PARTICLES AND THEIR USE

Номер: US20170002181A1
Принадлежит: EVONIK DEGUSSA GmbH

Surface treatment of titanium dioxide, barium sulfate, zinc sulfide, and/or lithopone particles, and mixtures of said particles with specific alkoxylated siloxanes for the improvement of dispersion in plastics. 2. The particle as claimed in claim 1 , wherein{'sup': 1', '3, 'sub': 2', 'p', 'x', 'y', 'z, 'Ridentically or differently is —(CH)—O-EO—PO—BO—R,'}{'sup': '1', 'with the proviso that in Rthe total number of carbon atoms and oxygen atoms is at least 70,'}EO is oxyethylene,PO is oxypropylene,BO is oxybutylene,x is from 0 to 20,y is from 5 to 100,z is from 0 to 20,p is from 2 to 4.3. The particle as claimed in claim 1 , wherein a numeric ratio of a to b is from 8:1 to 18:1.4. The particle as claimed in claim 2 , index wherein x is between 0.05 and 1.2 times a sum of y and z.5. The particle as claimed in claim 2 , whereinR is methyl,A is from 80 to 95,B is from 5 to 8,{'sup': '3', 'Ris hydrogen,'}x is from 3 to 5,y is from 10 to 25,z is 0.6. The particle as claimed in claim 1 , which is a surface-treated is TiOparticle.7. The particle as claimed in claim 1 , which has a dust value of at most 80 mg per 100 g of surface-treated particles.9. A process for producing a polymer composition claim 1 , comprising mixing the particle of with a polymer.10. The process as claimed in claim 9 , wherein the polymer composition is processed to give a plastic molding or a plastic film.11. A composition claim 1 , comprising a polymer claim 1 , which comprises a particle as claimed in .12. The composition as claimed in claim 11 , wherein the polymer is a thermoset or thermoplastic.13. The composition as claimed in claim 11 , which is a masterbatch claim 11 , a plastic molding claim 11 , or a plastic film.14. The particle of claim 2 , which is a surface-treated TiOparticle.15. The particle of claim 1 , whereinZ is a branched alkylene moiety or an unbranched alkylene moiety comprising 3 carbon atoms,m is 3,n is 1 or 2,o is 0,a is from 30 to 170, andb is from 2 to 30,where 0.05 to 1% ...

Подробнее
02-01-2020 дата публикации

Degradable sulfur-containing hyperbranched epoxy resin and preparation method thereof

Номер: US20200002463A1

Degradable sulfur-containing hyperbranched epoxy resin and a preparation method thereof. The preparation method comprises initiating a reaction of a mercaptocyclotriazine compound and a binary olefin by ultraviolet light to prepare a mercapto hyperbranched polymer; then reacting with glycidyl methacrylate to obtain a degradable sulfur-containing hyperbranched epoxy resin of which the molecular weight is about 3,000-35,400 g/mol. After the degradable sulfur-containing hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 1.5 h in a phosphoric acid solution at the temperature of 80 DEG C, thus realizing the recycle of the epoxy resin. The invention is simple in process, low in reaction temperature, rapid in reaction and high in yield, the sulfur-containing structure lowers curing temperature and realizes rapid curing, and cyclotriazine structure has a degradation function, and is expected to be used in the fields of strengthening and toughening of the epoxy resins, solvent-free coatings, electronic packaging.

Подробнее
04-01-2018 дата публикации

METHOD FOR PRODUCING RUBBER COMPOSITION AND RUBBER COMPOSITION

Номер: US20180002494A1
Принадлежит:

A method for producing a rubber composition include a mixing step, a drying step, and a dispersion step. In the mixing step, an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers is mixed with rubber latex to obtain a first mixture. In the drying step, the first mixture is dried to obtain a second mixture. In the dispersion step, the second mixture is tight-milled using an open roll to obtain a rubber composition. The rubber composition does not include an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers, and has a diameter of 0.1 mm or more. 1. A rubber composition , comprising:at least one of oxycellulose fibers and cellulose nanofibers that are dispersed in the rubber composition in an untangled state,the rubber composition obtained by a method comprising:a mixing step that mixes an aqueous solution that includes the at least one of oxycellulose fibers and cellulose nanofibers with rubber latex to obtain a first mixture;a drying step that dries the first mixture to obtain a second mixture; anda dispersion step that tight-mills the second mixture using an open roll to obtain the rubber composition.2. A rubber composition comprising rubber , and at least one of oxycellulose fibers and cellulose nanofibers that are dispersed in the rubber in an untangled state , the rubber composition not including an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers , and has a diameter of 0.1 mm or more.3. The rubber composition as defined in claim 2 , comprising at least one of the oxycellulose fibers and the cellulose nanofibers in an amount of 0.1 to 60 parts by mass based on 100 parts by mass of the rubber. This is a divisional application of U.S. Patent Application Publication No. 2015/0111998, filed on Oct. 16, 2014, which in turn claims priority to Japanese Patent Application No. 2013-216804 filed on Oct. 17, 2013, and Japanese Patent Application ...

Подробнее
04-01-2018 дата публикации

Barrier additives

Номер: US20180002496A1
Автор: Mark Rule

The present invention relates to processes for making compatibilized high aspect ratio barrier additives and polymer compositions that comprise compatibilized high aspect ratio barrier additives. The invention also relates to compositions produced by these processes, and articles formed from polymer compositions of this invention. The barrier additives provide passive barriers to gas molecules such as oxygen and carbon dioxide minimizing transit of such molecules through sidewalls of polymer articles containing the barrier additives.

Подробнее
04-01-2018 дата публикации

ELASTOMERIC COMPOSITIONS COMPRISING VINYL ACETAL POLYMERS

Номер: US20180002497A1
Принадлежит: EASTMAN CHEMICAL COMPANY

An elastomeric composition is provided comprising at least one vulcanizable unsaturated hydrocarbon elastomeric compound, at least one non-fibril, water insoluble vinyl acetal polymer, at least one filler, and optionally at least one coupling agent. A process of making the elastomeric composition is also provided as well as articles comprising the elastomeric composition. In particular, tires comprising the elastomeric composition are provided wherein the handling and processing characteristics are improved while other performance characteristics are retained. 1. A process for producing an elastomeric composition , said process comprising mixing at least one vulcanizable unsaturated hydrocarbon elastomer , at least one non-fibril , water insoluble vinyl acetal polymer , at least one filler , and optionally at least one coupling agent.2. The process according to wherein said elastomer is selected from the group consisting of natural rubber (NR) claim 1 , styrene-butadiene rubber (SBR) claim 1 , butadiene rubber (BR) claim 1 , nitrile rubber (NBR) claim 1 , 1 claim 1 ,4-cis polybutadiene claim 1 , polychloroprene claim 1 , 1 claim 1 ,4-cis polyisoprene claim 1 , halogenated or non-halogenated isoprene-isobutene copolymers claim 1 , butadiene-acrylonitrile claim 1 , styrene-butadiene-isoprene terpolymers and derivatives and mixtures thereof.4. The process according to wherein said non-fibril claim 3 , water insoluble vinyl acetal polymer has about 25 wt % to about 95 wt % of vinyl acetal monomer units claim 3 , from about 2 wt % to about 40 wt % vinyl alcohol monomer units claim 3 , and 0 wt % to 40 wt % vinyl acetate monomer units.5. The process according to wherein said non-fibril claim 1 , water insoluble vinyl acetal polymer is polyvinyl formal and wherein said polyvinyl formal has about 25 wt % to about 95 wt % of vinyl acetal monomer units claim 1 , from about 2 wt % to about 40 wt % vinyl alcohol monomer units claim 1 , and 0 wt % to 40 wt % vinyl acetate ...

Подробнее
02-01-2020 дата публикации

POLYIMIDE RESIN COMPOSITION, METHOD FOR PRODUCING SAME, AND POLYIMIDE FILM

Номер: US20200002477A1
Принадлежит: MITSUBISHI GAS CHEMICAL COMPANY, INC.

Provided is a polyimide resin composition and a production method thereof, wherein the polyimide resin composition contains an alicyclic polyimide resin having a structural unit represented by the following general formula (1) and inorganic particles of at least one selected from the group consisting of titanium dioxide, barium titanate, and zirconium oxide, wherein the alicyclic polyimide resin has a glass transition temperature of 260° C. or higher, 2. The polyimide resin composition according to claim 1 ,wherein a polyimide film with a thickness of 1 μm of the polyimide resin composition has a total light transmittance of 75% or greater.3. The polyimide resin composition according to claim 1 ,wherein a tetracarboxylic acid component of the alicyclic polyimide resin is derived from a tetracarboxylic acid selected from the group consisting of 1,2,3,4-cyclobutanetetracarboxylic acid, 1,2,4,5-cyclopentanetetracarboxylic acid, 1,2,4,5-cyclohexanetetracarboxylic acid, bicyclo[2.2.2]octa-7-en-2,3,5,6-tetracarboxylic acid, dicyclohexyltetracarboxylic acid, and regioisomers thereof.5. The polyimide resin composition according to claim 1 ,wherein a diamine component of the alicyclic polyimide resin is derived from a diamine selected from the group consisting of 1,4-bis(4-amino-α,α-dimethylbenzyl)benzene, 4,4′-bis(4-aminophenoxy)biphenyl, 5-amino-1,3,3-trimethyl-1-(4-aminophenyl)-indane, 6-amino-1,3,3-trimethyl-1-(4-aminophenyl)-indane, 2,2′-dimethylbenzidine, and 2,2′-bis(trifluoromethyl)benzidine.7. The method for producing a polyimide resin composition according to claim 6 ,wherein a solvent of the polyimide resin solution is one or more selected from the group consisting of N-methyl-2-pyrrolidone, N,N-dimethylacetamide, γ-butyrolactone, N,N-dimethylformamide, dimethyl sulfoxide, hexamethylphosphoramide, tetramethylene sulfone, p-chlorophenol, m-cresol, 2-chloro-4-hydroxytoluene, and 1,3-dioxolane.8. The method for producing a polyimide resin composition according to ...

Подробнее
03-01-2019 дата публикации

HIGH IMPACT STRENGTH POLYPROPYLENE COMPOSITES

Номер: US20190002648A1
Принадлежит:

A method of making a HIPP composite comprising blending polypropylene-coated functionalized multiwall carbon nanotubes (PP/f-MWNT) with a first PP to produce a PP and PP/f-MWNT mixture, wherein PP/f-MWNT comprise f-MWNT coated with a second PP via non-covalent interactions, wherein PP and PP/f-MWNT mixture comprises 0.0005 to 5 wt. % f-MWNT, based on the weight of PP and PP/f-MWNT mixture, wherein the first PP and the second PP are the same or different; melt blending the PP and PP/f-MWNT mixture to form a molten PP and PP/f-MWNT mixture; and shaping the molten PP and PP/f-MWNT mixture to form the HIPP composite. A HIPP composite comprising a continuous polymeric phase having dispersed therein a plurality of PP/f-MWNT, wherein the continuous polymeric phase comprises a first PP, wherein PP/f-MWNT comprise f-MWNT coated with a second PP via non-covalent interactions, wherein HIPP composite comprises 0.0005 to 5 wt. % f-MWNT, based on the weight of HIPP. 1. A method of making a high impact strength polypropylene (HIPP) composite , the method comprising:(a) blending polypropylene-coated functionalized multiwall carbon nanotubes (PP/f-MWNT) with a first polypropylene (PP) to produce a PP and PP/f-MWNT mixture, wherein the PP/f-MWNT comprise functionalized multiwall carbon nanotubes (f-MWNT) coated with a second PP via non-covalent interactions, wherein the PP and PP/f-MWNT mixture comprises PP/f-MWNT in an amount of from about 0.0005 wt. % to about 5 wt. % f-MWNT, based on the total weight of the PP and PP/f-MWNT mixture, and wherein the first PP and the second PP are the same or different;(b) melt blending at least a portion of the PP and PP/f-MWNT mixture to form a molten PP and PP/f-MWNT mixture; and(c) shaping at least a portion of the molten PP and PP/f-MWNT mixture to form the HIPP composite.2. The method of claim 1 , further comprising drying the first PP and/or the PP/f-MWNT at a temperature of from about 50 C to about 100 C claim 1 , a pressure of from about 50 ...

Подробнее
03-01-2019 дата публикации

METHOD AND DEVICE FOR PRODUCING A RUBBER MIXTURE IN A LIQUID PHASE

Номер: US20190002650A1
Принадлежит:

A process and device continuously prepare a filled rubber masterbatch. The process comprises bringing into contact, in a mixing zone, a first liquid-phase flow and a second liquid-phase flow, the first flow being an elastomer emulsion, the second flow being an aqueous suspension of filler particles, such that one of the two flows emerges inside the other flow and that the two flows are transported at low pressure before they are brought into contact. 125.-. (canceled)26. A process for continuously preparing a filled rubber masterbatch , said process comprising a step of bringing into contact , in a mixing zone , a first liquid-phase flow and a second liquid-phase flow , the first flow being an elastomer emulsion , and the second flow being an aqueous suspension of filler particles ,wherein one of the two flows emerges inside the other flow, andwherein the two flows are transported at low pressure before being brought into contact.27. The process according to claim 26 , wherein claim 26 , upstream of the mixing zone claim 26 , the first flow having a first flow area claim 26 , the second flow has a second flow area greater than the first flow area in a ratio of between 5 and 8.28. The process according to claim 26 , wherein claim 26 , upstream of the mixing zone claim 26 , the first flow having a first flow rate claim 26 , the second flow has a second flow rate greater than the first flow rate in a ratio of between 4 and 15.29. The process according to claim 26 , wherein the first flow emerges inside the second flow.30. The process according to claim 26 , wherein claim 26 , upstream of the mixing zone claim 26 , the first and second flows are transported under a pressure of less than 2 bar.31. The process according to claim 30 , wherein claim 30 , upstream of the mixing zone claim 30 , the first and second flows are transported under a pressure of less than 1.5 bar.32. The process according to claim 26 , wherein the mixture of the two flows emerges into the open air. ...

Подробнее
01-01-2015 дата публикации

COMPOSITION AND METHOD OF MAKING SHAPE MEMORY POLYMER FOR BIOMEDICAL APPLICATIONS

Номер: US20150005407A1
Принадлежит:

Shape memory polymers (SMP) based on poly vinyl alcohol (PVA) in the presence of 2-carboxyethyl acrylate oligomers (CEA), multi-wall carbon nanotubes (MWCNTs) and cross linked by ionizing radiation were investigated. Chemical crosslinking by glutaraldehyde for PVA in the presence of CEA and MWCNTs was also studied. Radiation cross linked SMP exhibits good temperature responsive shape memory behavior as demonstrated by thermal properties of radiation investigated by dynamic mechanical analysis. Transition temperature at Tan δ of radiation cross linked SMP decreased significantly by 6 and 13° C. due to addition of MWCNTs. The developed SMP exhibited promising shape memory behavior of radiation cross linked SMP for biomedical applications between temperatures range of Tan δ. Results on the gel fraction revealed significant reduction in swelling and increase in gelation due to chemical cross linking with glutaraldehyde. The radiation cross linked SMP reached 100% gelation at an irradiation dose of 50 kGy. 1. A method of making a shape memory polymer , comprising:mixing a poly vinyl alcohol solution and a 2-carboxyethyl acrylate oligomer at a specific ratio to make solution 1;adding a carbon nano tube having a specific measurement dispersed in a specific concentration with a sodium dodecyl sulfate surfactant to the solution 1 to make solution 2; andirradiating the solution 2 using a gamma ray source in the range of 5-100 kGy to make the shape memory polymer.2. The method of making the shape memory polymer of claim 1 , further comprising:mixing a chemical crosslinking agent to solution 2 before irradiation at a certain concentration.3. The method of making the shape memory polymer of claim 2 , wherein the chemical crosslinking agent is glutaraldehyde.4. The method of making the shape memory polymer of claim 2 , wherein the certain concentration is 4 ml (25%) crosslinking agent was added to 100 ml aqueous PVA solution.5. The method of making the shape memory polymer of ...

Подробнее
07-01-2021 дата публикации

Structured nanoporous materials, manufacture of structured nanoporous materials and applications of structured nanoporous materials

Номер: US20210003915A1
Принадлежит:

A method is disclosed for manufacturing a structured polymeric material. In the method, a body is provided comprising a substantially homogenous precursor polymeric material. An interference pattern of electromagnetic radiation is set up within the body to form a partially cross-linked polymeric material, the interference pattern comprising maxima and minima of intensity of the electromagnetic radiation, the interference pattern thereby causing spatially differential cross linking of the precursor polymeric material to form crosslinked regions having relatively high cross linking density and non-crosslinked regions having relatively low cross linking density, the crosslinked regions and non-crosslinked regions corresponding to the maxima and minima of intensity of the electromagnetic radiation, respectively. The partially cross-linked polymeric material is then contacted with a solvent to cause expansion and crazing of at least some of the non-crosslinked regions to form a structured polymeric material containing pores. 132-. (canceled)33. A polymeric structure having a plurality of lamellae , adjacent lamellae being spaced apart by an intervening spacing layer wherein the spacing layer comprises an array of spacing elements integrally formed with and extending between the adjacent lamellae , the spacing layer having interconnected porosity extending within the spacing layer.34. The polymeric structure according to wherein the lamellae are substantially non-porous.35. The polymeric structure according to and having a first region and a second region claim 33 , adjacent the first region claim 33 , wherein the first region differs from the second region in that the first region is a nanoporous material having the plurality of lamellae claim 33 , adjacent lamellae being spaced apart by the intervening spacing layer.36. The polymeric structure according to and having a first region and a second region claim 33 , each having the plurality of lamellae claim 33 , adjacent ...

Подробнее
12-01-2017 дата публикации

Salt Byproduct Separation During Formation of Polyarylene Sulfide

Номер: US20170009018A1
Принадлежит:

Methods of forming a polyarylene sulfide and systems as may be utilized in carrying out the methods are described. Included in the formation method is a filtration process for treatment of a mixture, the mixture including a polyarylene sulfide, a salt byproduct of the polyarylene sulfide formation reaction, and a solvent. The filtration process includes maintaining the downstream side of the filter medium at an increased pressure. The downstream pressure can such that the boiling temperature of the mixture at the downstream pressure can be higher than the temperature at which the polyarylene sulfide is insoluble in the solvent. 1. A method for forming a polyarylene sulfide comprising:reacting a dihaloaromatic compound with an alkali metal sulfide or an alkali metal hydrosulfide in an organic amide solvent to form a polyarylene sulfide and a salt;subjecting a mixture including the polyarylene sulfide, the salt, and the organic amide solvent to a filtration process in which the mixture flows to a filter medium from upstream of the filter medium and in which a filtrate flows away from the filter medium in a downstream direction, the salt being retained on the filter medium during the filtration process and forming a filter cake, the filtration process having a downstream pressure, the downstream pressure being elevated above atmospheric pressure, the boiling temperature of the mixture at the downstream pressure being greater than the minimum temperature at which the polyarylene sulfide is fully soluble in the solvent, the filtration having an upstream pressure, the upstream pressure being greater than the downstream pressure for at least a portion of the filtration process, the filtration being carried out in a temperature range that is less than the boiling temperature of the mixture at the downstream pressure and that is greater than the minimum temperature at which the polyarylene sulfide is fully soluble in the solvent.2. The method of claim 1 , further comprising ...

Подробнее
14-01-2016 дата публикации

DEPOLYMERISATION OF ALGINIC ACID

Номер: US20160009829A1
Принадлежит:

Depolymerisation of alginic acid by microwave treatment. 1. A method of depolymerisation of alginic acid , said method comprising the steps of:a) providing alginic acid as a starting material for step b, wherein the alginic acid starting material has a pH in the range of 0-4.4 and wherein the dry matter content of the alginic acid starting material is in the range of 5-100% w/w, andb) treating said alginic acid starting material with microwave irradiation to obtain a depolymerised alginic acid material.2. The method according to claim 1 , wherein the microwave frequency is between 300 MHz and 300 GHz claim 1 , such as 300 MHz to 30 GHz claim 1 , preferably 300 MHz to 3 GHz.3. The method according to claim 1 , wherein the concentration of alginic acid in the alginic acid starting material is in the range of 7.5-100% w/w based on dry matter claim 1 , such as in the range of 80-100% w/w based on dry matter claim 1 , preferably in the range of 90-100% w/w based on dry matter.4. The method according to claim 1 , wherein the alginic acid starting material has a pH in the range of 0-3.5.5. The method according to claim 1 , wherein the dry matter content of the alginic acid starting material is in the range of 5-90% w/w.6. The method according to claim 1 , wherein the starting alginic acid material has a weight average molecular weight of 1 claim 1 ,500 claim 1 ,000-50 claim 1 ,000 Da.7. The method according to claim 1 , wherein the alginic acid starting material comprises alginic acid in a mixture with one or more selected solvents from the group consisting of water claim 1 , methanol claim 1 , ethanol claim 1 , and isopropanol.8. The method according to claim 1 , wherein the alginic acid starting material comprises alginic acid in water.9. The method according to claim 1 , wherein the alginic acid starting material further comprises a reducing and/or oxidizing agent.10. The method according to claim 1 , wherein the alginic acid starting material is drained and/or pressed ...

Подробнее
14-01-2016 дата публикации

METHOD FOR THE PRODUCTION OF ABS COMPOSITIONS HAVING AN IMPROVED SURFACE

Номер: US20160009870A1
Принадлежит: BAYER MATERIAL SCIENCE AG

The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the granulates have been moistened by bringing same in contact with liquid water and have been stored in said water, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time. 2. The process as claimed in claim 1 , wherein component B1 contains B1.1.1) 65% to 85% by weight, based on B1.1, of at least one monomer selected from the group consisting of styrene, α-methylstyrene and methyl methacrylate, and', 'B1.1.2) 15% to 35% by weight, based on B1.1, of at least one monomer selected from the group consisting of acrylonitrile, maleic anhydride and methyl methacrylate,, 'B1.1) 5% to 95% by weight, based on component B1, of a mixture of'}andB1.2) 95% to 5% by weight, based on component B1, of at least one elastomeric graft base, optionally selected from the group consisting of polybutadiene rubber and styrene-butadiene block copolymer rubber.3. The process as claimed in claim 1 , wherein component B1 contains the inorganic salt as a production-related impurity.4. The process as claimed in claim 1 , wherein rakes claim 1 , paddles and/or other kind of mechanical stirrer have been installed in the dip tank.5. The process as claimed in claim 1 , wherein the contacting with liquid water is effected within the temperature range from 5 to 95° C. claim 1 , optionally from 10 to 90° C. claim 1 , optionally from 20 to 85° C.6. The process as claimed in claim 1 , wherein the process is conducted continuously.7. The process as claimed in claim 1 , wherein the process is conducted batchwise.8. The process as claimed in claim 1 , wherein the transport of pellets from tanks can be implemented with the aid of a jet pump.9. The process as claimed in ...

Подробнее
14-01-2016 дата публикации

GRAFTING FUNCTIONAL SPECIES TO RUBBER

Номер: US20160009874A1
Автор: BOHN, JR. Clayton C
Принадлежит:

A method for producing a functionalized rubber that includes adding a diene rubber selected from natural rubber, a synthetic polyisoprene rubber or combinations thereof and an organic peroxide to a mixer, the organic peroxide may be represented by the formula R—O—O—R, wherein Ris selected from hydrogen or an organic moiety of between 4 and 15 carbon atoms and Rcomprises a functional moiety. The mix composition may be mixed until the mix composition reaches a target temperature of between 120° C. and 190° C. and decomposing the organic peroxide to provide a decomposition product comprising the functional moiety and reacting at least a portion of the decomposition product with at least a portion of the diene rubber to produce the functionalized rubber. 1. A method for producing a functionalized rubber , the method comprising:{'sub': 1', '2', '1', '2, 'adding a diene rubber selected from natural rubber, a synthetic polyisoprene rubber or combinations thereof and an organic peroxide to a mixer, the organic peroxide represented by the formula R—O—O—R, wherein Ris selected from hydrogen or an organic moiety of between 4 and 15 carbon atoms and Rcomprises a functional moiety selected from an amino, an amide, a hydroxyl, a sulfide, an epoxy, a tin-containing, an alkoxysilyl, a silanol, a carbonyl, a carboxyl, a thiocarbonyl, an ammonium, a nitrile, an imine functional moiety or combinations thereof;'}mixing a mix composition comprising the diene rubber and the organic peroxide until the mix composition reaches a target temperature of between 120° C. and 190° C.;decomposing the organic peroxide to provide a decomposition product comprising the carboxyl functional moiety;reacting at least a portion of the decomposition product with at least a portion of the diene rubber to produce the functionalized rubber;dropping the mix composition from the internal mixer; andcooling the mix composition.2. The method of claim 1 , wherein Ris the carboxyl functional moiety.3. The method of ...

Подробнее
27-01-2022 дата публикации

FOAM AND METHOD FOR PRODUCING SAME

Номер: US20220025142A1
Принадлежит:

[Problem] An object of the present invention is to provide a foam including a thermoplastic resin and rubber as a main component, in which a micronized product of a cellulose fiber is uniformly dispersed, and uniformity and mechanical properties are excellent. [Solution] A foam includes a modified cellulose fiber (A) covalently bonded with a diene-based polymer, a thermoplastic resin and/or rubber (B), and a diene-based polymer (C) having a functional group capable of covalently bonding with a cellulose fiber, in which the fiber (A) is micronized, the fiber (A) has a content of 0.05 to 20% by mass, and the thermoplastic resin and/or rubber (B) has a glass transition point of −130° C. to 120° C. 1. A foam comprising:a modified cellulose fiber (A) covalently bonded with a diene-based polymer;a thermoplastic resin and/or rubber (B); anda diene-based polymer (C) having a functional group capable of covalently bonding with a cellulose fiber, whereinthe fiber (A) is micronized,the fiber (A) has a content of 0.05 to 20% by mass, andthe thermoplastic resin and/or rubber (B) has a glass transition point of −130° C. to 120° C.2. The foam according to claim 1 , wherein the thermoplastic resin and/or rubber (B) is crosslinked.3. The foam according to claim 1 ,wherein a mass ratio is (A)/(B)/(C)=1/1.5 to 2000/0.001 to 0.5.4. A production method of a foam claim 1 , comprising the following steps:(step 1)a step of adjusting a concentration by diluting a masterbatch containing:a micronized modified cellulose fiber (A) covalently bonded with a diene-based polymer,a thermoplastic resin and/or rubber (B) having a glass transition point of −130° C. to 120° C., anda diene-based polymer (C) having a functional group capable of covalently bonding with a cellulose fiber,with the (B);(step 2)a step of adding a foaming agent and, as necessary, a crosslinking agent after (step 1); and(step 3)a step of performing foam molding or crosslinking foam molding after (step 2).5. The production method ...

Подробнее
14-01-2016 дата публикации

MODIFIED CONJUGATED DIENE POLYMER AND METHOD FOR PRODUCING SAME, POLYMER COMPOSITION, CROSSLINKED POLYMER, AND TIRE

Номер: US20160009903A1
Принадлежит: JSR Corporation

The invention provides a rubber composition which can improve low fuel consumption performance, workability, and abrasion resistance at the same time in uses of automobile tires and the like. A modified conjugated diene polymer is produced by a method comprising: a polymerization step of polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound to obtain a conjugated diene polymer having an active end in the presence of a metal amide compound obtained by mixing an alkali metal compound or an alkaline earth metal compound with a secondary amine compound and a first modification step of reacting the active end with a compound (C1) having a functional group (a) that interacts with silica, having one or more linear structures where three or more groups or atoms in total derived from at least either of a methylene group and a divalent atom are linearly connected, and capable of binding to a plurality of the active ends. 1. A method for producing a modified conjugated diene polymer , comprising:a polymerization step of polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound to obtain a conjugated diene polymer having an active end, in the presence of a metal amide compound obtained by mixing an alkali metal compound or an alkaline earth metal compound with a secondary amine compound anda first modification step of reacting the active end with the following compound (C1):(C1) a compound having a functional group (a) that interacts with silica, having one or more linear structures where three or more groups or atoms in total derived from at least either of a methylene group and a divalent atom are linearly connected, and capable of binding to a plurality of the active ends.2. The method for producing a modified conjugated diene polymer according to claim 1 , wherein (C1) is the following compound (C1′):(C1′) a compound having a functional group (a) that ...

Подробнее
08-01-2015 дата публикации

RUBBER COMPOSITION AND METHOD FOR PRODUCING SAME

Номер: US20150011677A1
Автор: KIMURA Takayoshi
Принадлежит: TOYO TIRE & RUBBER CO., LTD.

A rubber composition obtained by dry-mixing a natural rubber wet master batch yielded by mixing at least a natural rubber latex and a carbon-black-containing slurry solution with each other in a liquid phase and drying the resultant mixture, a dry rubber made mainly of a polybutadiene rubber, and an oil, wherein when the total amount of rubber components in the rubber composition is regarded as 100 parts by mass, the natural rubber is contained in an amount of 50 parts or more by mass, and the polybutadiene rubber is contained in an amount of 20 to 50 parts by mass, and the oil has a pour point of −10 C or lower, and an aniline point of 90 C or higher, and the blend amount of the oil is from 15 to 40 parts by mass for 100 parts by mass of the rubber components. 115.-. (canceled)16. A rubber composition obtained by dry-mixing a natural rubber wet master batch yielded by mixing at least a natural rubber latex and a carbon-black-containing slurry solution with each other in a liquid phase and drying the resultant mixture , a dry rubber made mainly of a polybutadiene rubber , and an oil ,wherein when the total amount of rubber components in the rubber composition is regarded as 100 parts by mass, the natural rubber is contained in an amount of 50 parts or more by mass, and the polybutadiene rubber is contained in an amount of 20 to 50 parts by mass, and the oil has a pour point of −10° C. or lower, and an aniline point of 90° C. or higher, and the blend amount of the oil is from 15 to 40 parts by mass for 100 parts by mass of the rubber components.17. The rubber composition according to claim 16 , wherein the natural rubber wet master batch is a master batch produced through the following steps:step (I) in which when a carbon black is dispersed into a dispersing solvent to prepare the carbon-black-containing slurry solution, at least one portion of the natural rubber latex is added thereto, thereby producing a slurry solution containing the carbon black to which natural ...

Подробнее
08-01-2015 дата публикации

Process for Forming Thermoplastic Vulcanizates

Номер: US20150011679A1
Принадлежит:

Provided are methods for producing a thermoplastic vulcanizate. One method includes charging vulcanizable rubber to a reactor; charging a masterbatch of thermoplastic resin and a catalyst for a phenolic resin curative to the reactor; charging a phenolic resin curative to the reactor; and dynamically vulcanizing the rubber with the phenolic resin curative in the presence of the catalyst. Also provided are thermoplastic vulcanizates made by the methods of the invention. 116-. (canceled)17. A method for making a thermoplastic vulcanizate , the method comprising the steps of:introducing rubber and first thermoplastic resin to an extruder;introducing stannous chloride masterbatch and second thermoplastic resin to the extruder;mixing the rubber, first thermoplastic resin, stannous chloride masterbatch, and second thermoplastic resin within the extruder to form a molten blend;introducing a curative to the molten blend in the extruder to form a vulcanizable blend;dynamically vulcanizing the vulcanizable blend to form the thermoplastic vulcanizate.18. The method of claim 17 , where the stannous chloride masterbatch includes ≧10 wt % and ≦70 wt % stannous chloride based on the total weight of the masterbatch.19. The method of claim 17 , where the stannous chloride masterbatch is charged to the reactor in the form of pellets.20. The method of claim 17 , where the second thermoplastic resin comprises polypropylene.21. The method of claim 17 , where the stannous chloride masterbatch comprises anhydrous stannous chloride.22. The method of claim 17 , further comprising introducing oil to the extruder prior to the introduction of the curative.23. The method claim 17 , further comprising introducing oil to the extruder after the introduction of the curative.24. The method of claim 17 , wherein the stannous chloride masterbatch and second thermoplastic resin are introduced to the extruder through a pellet feeder that is different from the feeder used to introduce the rubber and first ...

Подробнее
08-01-2015 дата публикации

METHOD FOR PROCESSING POLYETHYLENE

Номер: US20150011696A1
Принадлежит:

A method can include consecutively batch processing at least two different polyethylene grades in pellet form in a pellet handling unit. A ratio of a melt flow index (MI) of a first polyethylene in pellet form (MI) to a MI of a later processed polyethylene in pellet form (MI) can be smaller than 0.30. The method can include processing an intermediate polyethylene grade in pellet form. An amount of intermediate polyethylene grade processed can be at most 1/100of a handling capacity of the pellet handling unit. The intermediate polyethylene grade can have the same MI as the later processed polyethylene in pellet form. 17-. (canceled)8. A method of processing different polyethylene grades comprising: a first polyethylene in pellet form in a pellet handling unit;', 'an intermediate polyethylene grade in pellet form in the pellet handling unit; and', 'a later processed polyethylene in pellet form in the pellet handling unit;, 'consecutively batch processing{'sub': f', 'l, 'wherein a ratio of a melt flow index (MI) of the first polyethylene in pellet form (MI) to a MI of the later processed polyethylene in pellet form (MI) is smaller than 0.30; and'}wherein the intermediate polyethylene grade has the same MI as the later processed polyethylene in pellet form.9. The method according to claim 8 , wherein the consecutively batch processed polyethylene pellets are obtained from polyethylene resins produced in the presence of a metallocene catalyst.10. The method according to claim 8 , wherein the pellet handling unit comprises one or more transfer lines claim 8 , one or more homogenization silos claim 8 , one or more storage silos claim 8 , or combinations thereof.11. The method according to claim 8 , wherein at least one of the first polyethylene and the later process polyethylene has a monomodal molecular weight distribution.12. The method according to claim 8 , wherein the first polyethylene and the later process polyethylene have monomodal molecular weight distributions. ...

Подробнее
14-01-2021 дата публикации

THERMOPLASTIC COMPOSITION

Номер: US20210009768A1
Принадлежит:

This disclosure relates to a shaped article made from thermoplastic material which may be a thermoplastic elastomeric material containing a masterbatch of a stick-slip modifier having one or more thermoplastic silicone vulcanisates, an assembly comprising the article and a process for making the shaped article. 2. A shaped article in accordance with comprising component (B2) and optionally component (B3).3. A shaped article in accordance with wherein uncured organopolysiloxane (B3) is present in an amount of from 0.1 to 25% by weight of masterbatch (B).4. A shaped article in accordance with wherein Silicone elastomer (B2) claim 1 , when present claim 1 , is prepared by dynamic vulcanisation of: a radical initiator (B2a4); or', 'a silanol terminated diorganopolysiloxane (B2b1),', 'a condensation catalyst (B2b3).', 'organopolysiloxane having at least two Si-bonded hydrogen atoms, alternatively at least three Si-bonded hydrogen atoms per molecule (B2a2) and'}], '(i) an organopolysiloxane having at least two Si-bonded hydrogen atoms, alternatively at least three Si-bonded hydrogen atoms per molecule (B2a2) and a hydrosilylation catalyst (B2a3) and optionally a catalyst inhibitor (B2a5); or'}, 'diorganopolysiloxane (B2a1) having an average of at least two alkenyl groups per molecule and either'}5. A shaped article in accordance with wherein diorganopolysiloxane (B2a1) or diorganopolysiloxane (B2b1) is a gum having a Williams plasticity value of at least 100mm/100 as measured by ASTM D-926-08.6. A shaped article in accordance with wherein the one or more thermoplastic organic materials (A) and (B1) may be the same or different and are selected from polycarbonates (PC); blends of polycarbonates with other polymers; polyamides and blends of polyamides with other polymers; polyesters; polyphenylene ether (PPE) and polyphenyleneoxide (PPO) claim 1 , and blends of PPE or PPO with styrenics; polyphenylene sulphide (PPS) claim 1 , polyether sulphone (PES) claim 1 , polyaramids ...

Подробнее
14-01-2021 дата публикации

Manufacturing method for low molecular weight polytetrafluoroethylene, and powder

Номер: US20210009769A1
Принадлежит: Daikin Industries Ltd

Provided is a method for producing low molecular weight polytetrafluoroethylene less likely to generate C6-C14 perfluorocarboxylic acids and salts thereof. The method for producing low molecular weight polytetrafluoroethylene includes: (1) feeding into an airtight container: high molecular weight polytetrafluoroethylene: and a gas mixture containing an inert gas and oxygen and having an oxygen content relative to the total of the inert gas and oxygen of 1 to 10 vol %; and (2) irradiating the high molecular weight polytetrafluoroethylene to provide low molecular weight polytetrafluoroethylene having a melt viscosity at 380° C. of 1.0×102 to 7.0×105 Pa·s.

Подробнее
14-01-2021 дата публикации

THERMALLY CONDUCTIVE THERMOPLASTIC COMPOSITIONS WITH GOOD DIELECTRIC PROPERTY AND THE SHAPED ARTICLE THEREFORE

Номер: US20210009886A1
Принадлежит:

A polymer composition includes: from about 20 wt. % to about 80 wt. % of a polymer base resin; from about 10 wt. % to about 60 wt. % of a thermally conductive filler; and from about 5 wt. % to about 60 wt. % of a dielectric ceramic filler having a Dk of at least 20 when measured at 1.1 GHz or greater. The polymer composition exhibits a dielectric constant greater than 3.0 at 1.1 GHz when tested using a split post dielectric resonator and network analyzer on a sample size of 120 mm by 120 mm and 6 mm thickness according to ASTM D150. The polymer composition exhibits a dissipation factor of less than 0.002 at 1.1 GHz when tested using a split post dielectric resonator and network analyzer on a sample size of 120 mm by 120 mm and 6 mm thickness according to ASTM D150. 1. A polymer composition comprising:from about 20 wt. % to about 80 wt. % of a polymer base resin;from about 10 wt. % to about 60 wt. % of a thermally conductive filler; andfrom about 5 wt. % to about 60 wt. % of a dielectric ceramic filler having a Dk of at least 20 when measured at 1.1 GHz or greater,wherein the polymer composition exhibits a dielectric constant greater than 3.0 at 1.1 GHz when tested using a split post dielectric resonator and network analyzer on a sample size of 120 mm by 120 mm and 6 mm thickness according to ASTM D150,wherein the polymer composition exhibits a dissipation factor of less than 0.002 at 1.1 GHz when tested using a split post dielectric resonator and network analyzer on a sample size of 120 mm by 120 mm and 6 mm thickness according to ASTM D150, andwherein the combined weight percent value of all components does not exceed about 100 wt. %, and all weight percent values are based on the total weight of the composition.2. The polymer composition of claim 1 , wherein the polymer base resin comprises a polyarylene ether claim 1 , a polypropylene claim 1 , a polystyrene or a combination thereof.3. A polymer composition comprising:from about 20 wt. % to about 80 wt. % of a ...

Подробнее
14-01-2016 дата публикации

HYDROGEN SULFIDE SENSOR AND METHOD

Номер: US20160011142A1
Принадлежит:

A hydrogen sulfide sensor is disclosed. The hydrogen sulfide sensor includes a substrate, a pair of interdigitated electrodes supported by the substrate, and a nanocomposite based sensing layer deposited on the interdigitated electrodes and configured to interact with hydrogen sulfide. 1. A hydrogen sulfide sensor , comprising:a substrate;a pair of interdigitated electrodes supported by the substrate; anda nanocomposite based sensing layer in electrical contact with the interdigitated electrodes and configured to interact with hydrogen sulfide.2. The hydrogen sulfide sensor of claim 1 , wherein the substrate includes at least one of silicon dioxide claim 1 , silicon claim 1 , glass claim 1 , and quartz.3. The hydrogen sulfide sensor of claim 1 , wherein the nanocomposite based composite includes polyaniline and a silver (I) salt or a copper (I) salt.4. The hydrogen sulfide sensor of claim 3 , wherein the nanocomposite based composite includes silver acetate.5. The hydrogen sulfide sensor of claim 3 , wherein the nanocomposite based composite includes copper (I) acetate.6. The hydrogen sulfide sensor of claim 1 , wherein the nanocomposite includes an isolator polymer or a clay.7. The hydrogen sulfide sensor of claim 1 , wherein the nanocomposite includes at least one of polystyrene claim 1 , polyvinyl acetate claim 1 , and polyvinyl chloride.8. The hydrogen sulfide sensor of claim 1 , wherein the nanocomposite includes at least one of muscovite claim 1 , kaolinite claim 1 , montmorilonite claim 1 , bentonite claim 1 , and dickite.9. The hydrogen sulfide sensor of claim 1 , wherein the hydrogen sulfide sensor is configured to sense hydrogen sulfide from about 150° C. to about 250° C.10. A method of forming a hydrogen sulfide sensor claim 1 , comprising:dispersing an isolator polymer or a clay in distilled water to form a first dispersion;dispersing, by sonication, synthesized polyaniline nanofibers within the first dispersion to form a second dispersion;suspending, by ...

Подробнее
09-01-2020 дата публикации

Method and Composition for Preparing Polyamide Powders

Номер: US20200010626A1

A method of preparing polyamide (PA) powders includes the steps of: heating a composition including PA granules, a nucleating agent and an organic solvent under normal pressure to Tnot lower than melting point (T) of PA granules and maintaining at Tto dissolve PA granules; cooling the heated composition to Tto nucleate the dissolved PA granules and maintaining at Tto crystallize, where 15° C.≤T−T≤33° C.; cooling the crystallization product to precipitate PA; and washing the precipitated product to remove the organic solvent. The weight ratio of PA granules to the nucleating agent is 100:1, and the weight ratio of PA granules to the organic solvent ranges from 0.11 to saturation solubility of PA granules in the organic solvent. 1. A method of preparing polyamide powders , comprising the steps of:{'sub': 1', 'm, '(a) heating a composition including polyamide granules, a nucleating agent and an organic solvent under normal pressure to a first temperature (T) equal to or higher than the melting point (T) of the polyamide granules, followed by maintaining at the first temperature for a first time period to dissolve the polyamide granules in the organic solvent;'}{'sub': 2', '2', 'm', '2, '(b) cooling the heated composition to a second temperature (T) to nucleate the dissolved polyamide granules, followed by maintaining at the second temperature (T) to crystallize, so as to form a crystallization product, in which 15° C.≤T−T≤33° C.;'}(c) cooling the crystallization product to precipitate polyamide, so as to form a precipitated product; and(d) washing the precipitated product to remove the organic solvent,wherein the weight ratio of the polyamide granules to the organic solvent ranges from 0.11 to saturation solubility of the polyamide granules in the organic solvent, and the weight ratio of the polyamide granules to the nucleating agent is 100:1.2. The method as claimed in claim 1 , wherein the organic solvent has a boiling point ranging from 190° C. to 209° C.3. The ...

Подробнее
09-01-2020 дата публикации

RIGID MONOLAYER CONTAINER

Номер: US20200010637A1
Принадлежит:

A new light protective rigid monolayer package which includes TiOparticles, at least one color pigment selected from black and yellow, and a polymer. The light protective rigid monolayer package can have an LPF value of at least about 20. 1. A rigid , monolayer package comprising:a) titanium dioxide particles;b) at least one color pigment selected from the group consisting of black and yellow; andc) a polymer material, wherein the titanium dioxide particles and the at least one color pigment are dispersed in the polymer material and the package has an LPF value of at least about 20.2. The package of claim 1 , wherein the titanium dioxide particles comprise at least about 1 wt % of the total weight of the package.3. The package of claim 2 , wherein the at least one color pigment comprise about 0.01 wt % or less of the total weight of the package.4. The package of claim 3 , wherein the titanium dioxide particles comprise from about 0.01 wt % to about 8 wt % of the total weight of the package.5. The package of claim 4 , wherein the package has a light protection value of at least about 30.6. The package of claim 5 , wherein the package has a light protection value of at least about 40.7. The package of claim 6 , wherein the package has a light protection value of at least about 50.8. The package of claim 1 , wherein the TiOis coated with a metal oxide and an organic material.9. The package of claim 8 , wherein the metal oxide is selected from the group consisting of silica claim 8 , alumina claim 8 , zirconia claim 8 , or combinations thereof.10. The package of claim 9 , wherein the metal oxide is alumina.11. The package of claim 8 , wherein the organic material is selected from the group consisting of an organo-silane claim 8 , an organo-siloxane claim 8 , a fluoro-silane claim 8 , an organo-phosphonate claim 8 , an organo-acid phosphate claim 8 , an organo-pyrophosphate claim 8 , an organo-polyphosphate claim 8 , an organo-metaphosphate claim 8 , an organo- ...

Подробнее
09-01-2020 дата публикации

Flame-Retardant, Moisture-Cured Wire and Cable Constructions with Improved Glancing Impact Performance

Номер: US20200010682A1
Принадлежит: Dow Global Technologies LLC

Articles made from a moisture-curable, polymeric composition comprising in weight percent based on the weight of the composition: (A) 2 to less than 80 weight percent (wt %) of an ethylenic polymer with (1) a crystallinity at room temperature of 34% to 55%, or 65% to 80%, and (2) a melt index (I 2 ) of 0.1 to 50 decigrams per minute (dg/min); (B) 3 to 30 wt % of a halogenated flame retardant; (C) 3 to 30 wt % an inorganic antimony flame retardant; and (D) 0 to 10 wt % of at least one of an inorganic flame retardant other than the inorganic antimony flame retardant, e.g., zinc oxide exhibit enhanced ACBD properties in comparison to articles alike in all respects except made from a composition comprising an ethylenic polymer without the requisite crystallinity at room temperature.

Подробнее
09-01-2020 дата публикации

CORE-FREE THERMOPLASTIC POLYURETHANE YARN WITH ADDED NANOSILICA

Номер: US20200010981A1
Автор: PARK Heedae
Принадлежит:

The present invention provides a resin for thermoplastic polyurethane (TPU) yarn using nanosilica and a method for manufacturing the same, where nanosilica having a particle size of 100 nm or less is added as a thickening agent for improving productivity in the production of and glossiness of TPU yarns, such as mono-filament TPU yarns having a denier count of 50 to 350 or multi-filament TPU yarns having a denier count of 50 or less without applying a coating of TPU to the surface of polyester or nylon yarns, thereby securing desired workability and properties and realizing continuous drawing of TPU yarns without thread breakage. The content of nanosilica from 0.3 to 7 phr in TPU resin is optimal for productivity of mono- or multi-filament yarns, whereas the content of nanosilica from 0.5 to 1.5 phr is optimum for both productivity and cost reduction. 1. A core-free thermoplastic polyurethane (TPU) yarn formed with a resin , wherein the resin comprises a thermoplastic polyurethane and nanosilica mixed with the thermoplastic polyurethane by melt extrusion , wherein the core-free TPU yarn comprises the nanosilica in a range between 0.3 and 7 parts per hundreds resin (phr) and having a nanosilica particle diameter of 100 nm or less , which provides drawing of the core-free TPU continuously and without thread breaking.2. The core-free TPU yarn of claim 1 , wherein the resin is prepared using liquid base materials of a polyol claim 1 , an isocyanate and a glycol chain extender claim 1 , wherein one of the liquid base materials is initially mixed with the nanosilica.3. The core-free TPU yarn of claim 1 , wherein the core-free TPU is a multi-filament yarn formed with a plurality of single filament yarns claim 1 , each of the single filament yarns having a denier count of 50 or less.4. The core-free TPU of claim 1 , wherein the core-free TPU is a mono-filament yarn having a denier count of 50 to 350.5. The core-free TPU yarn of claim 1 , wherein the thermoplastic ...

Подробнее
14-01-2021 дата публикации

METHOD FOR FORMING POLYMER COMPOSITE MATERIAL ONTO CAPACITOR ELEMENT

Номер: US20210012971A1
Автор: Chang Hao-Pu, LIN CHIEH
Принадлежит:

A method for forming the polymer composite material onto the capacitor element is provided. The method includes a preparing step, a resting step, an immersing step, and a polymerization step. The preparing step includes forming a homogeneous reaction solution containing 3,4-ethylenedioxythiophene, an emulsifier, polystyrene sulfonic acid or salts thereof, an oxidant, and a solvent. The resting step includes resting the homogeneous reaction solution to generate microparticles so that a nonhomogeneous reaction solution containing the microparticles is formed. The immersing step includes immersing the capacitor element into the nonhomogeneous reaction solution so that the nonhomogeneous reaction solution is coated onto the capacitor element and a reaction layer is formed on the capacitor element. The polymerization step includes heating the reaction layer to form a polymer composite layer containing the polymer composite material, and the polymer composite material is polymerized from 3,4-ethylenedioxythiophene and polystyrene sulfonic acid and salts thereof. 1. A method for forming a polymer composite material onto a capacitor element , comprising:a preparing step: forming a homogeneous reaction solution containing 3,4-ethylenedioxythiophene, an emulsifier, polystyrene sulfonic acid or salts thereof, an oxidant, and a solvent;a resting step: resting the homogeneous reaction solution to generate microparticles so that a nonhomogeneous reaction solution containing the microparticles is formed;an immersing step: immersing the capacitor element into the nonhomogeneous reaction solution so that the nonhomogeneous reaction solution is coated onto the capacitor element and a reaction layer is formed on the capacitor element; anda polymerization step: heating the reaction layer to form a polymer composite layer containing the polymer composite material; wherein the polymer composite material is polymerized from 3,4-ethylenedioxythiophene and polystyrene sulfonic acid and ...

Подробнее
03-02-2022 дата публикации

CROSS-LINKED PLASTOMERS AS A REPLACEMENT FOR RUBBER

Номер: US20220033588A1
Принадлежит:

Articles comprising a polymer composition, wherein the polymer composition is obtainable by grafting an ethylene copolymer with comonomer units comprising hydrolysable silane groups, wherein the polymer composition shows high gel content and low compression set at −25° C. These articles have applications in automotive weather-stripping, such as sealing systems for doors, trunks and hoods. 1: An article comprising:a polymer composition,wherein the polymer composition is obtainable by grafting an ethylene copolymer with comonomer units comprising hydrolysable silane groups, andwherein, the polymer composition has an amount of more than 0.5 wt. % of the comonomer units comprising hydrolysable silane groups, based on the total weight amount of monomer units in the polymer composition,wherein the said ethylene copolymer comprises alpha-olefin comonomer units having from 6-12 carbon atoms, and [{'sup': '3', 'a density of from 840 to 890 kg/m,'}, {'sub': 'n', 'a total unsaturation of from 20 to 100 unsaturated bonds per 100,000 CHgroups.'}], 'wherein the said ethylene copolymer is characterized as having2: The article according to claim 1 , wherein the ethylene copolymer comprises from 10 wt. % to 50 wt. % of alpha olefin comonomer units having from 6 to 12 carbon atoms based on the total amount of monomer units in the ethylene copolymer (as determined using NMR).3: The article according to claim 1 , wherein the alpha olefin comonomer units are selected from 1-octene or 1-hexene.4: The article according to claim 1 , wherein the ratio of vinyl groups to total unsaturated groups in the ethylene copolymer is less than 0.6.5: The article according to claim 1 , wherein the ratio of cis to trans groups in the ethylene copolymer is greater than 1.6: The article according to claim 1 , wherein the ethylene copolymer has a crystallinity between 5 and 8% when measured by DSC using 50° C./min cooling and heating rates.7: The article according to claim 1 , wherein the polymer ...

Подробнее
03-02-2022 дата публикации

CROSSLINKED POLYSACCHARIDES AND RELATED METHODS

Номер: US20220033592A1
Принадлежит:

Methods of forming cross-linked polysaccharides are disclosed in which one or more polysaccharides are dissolved in solution, gelled, modified to have a desired concentration, and subsequently irradiated. The irradiation of the gel crosslinks the polysaccharide(s) present. The disclosed techniques may be applied to various polysaccharides, including but not limited to agarose and/or hyaluronic acid. 1. A method comprising:forming a solution containing agarose and hyaluronic acid;gelling the solution containing agarose and hyaluronic acid to form a gel; andirradiating the gel to form a crosslinked gel.2. The method of claim 1 , further comprising at least partially dehydrating the gel prior to irradiating the gel.3. The method of claim 1 , wherein the solution containing agarose and hyaluronic acid has an agarose concentration of between 1% and 2%.4. The method of claim 1 , further comprising degrading the hyaluronic acid of the crosslinked gel by exposing the crosslinked gel to a hyaluronidase enzyme. This application is a divisional of and claims priority to U.S. patent application Ser. No. 16/723,206 filed Dec. 20, 2019, which claims the benefit of U.S. provisional application Ser. No. 62/783,630, filed Dec. 21, 2018, the contents of each of which are incorporated by reference herein.Crosslinking is the process of chemically joining two or more polymer chains together through a covalent or ionic bond. Various mechanical properties of a polymer can be modified by crosslinking. For example, crosslinking a material to a low crosslink density can decrease the viscosity of polymer melts, while crosslinking to an intermediate crosslink density can transform a gummy polymer into a material with elastomeric properties and potentially high strength. In some cases, very high crosslink densities can cause a material to become rigid or glassy. Numerous crosslinking techniques are known, including processes that rely on heat, pressure, change in pH, or radiation to initiate ...

Подробнее