КРАСКА

Изобретение относится к области строительных материалов и может быть использовано для отделки строительных изделий и элементов зданий и сооружений. Краска содержит латекс акрилового каучука 5 - 60%, поверхностно-активное вещество ОП-7 или ОР-10 0,1 - 1,5%, дисперсант 0,1 - 1,5%, коалесцент 0, 05 - 3,0%, антифриз 0,5 - 5,0, загуститель 0,05 - 1,5%, биоцидную добавку 0,01 - 1,0%, пеногаситель 0,01 - 1,0%, пластификатор 0,05 - 5,0%, щелочь 0,05 - 5,0%, двуокись титана 0,01 - 50,0%, мел 0 - 50%, тальк 0 - 20%, пигмент 0, 01 - 50%, каолин 0 - 20%, слюду 0 - 20%, трехокись сурьмы 3 - 5%, воду - остальное. Технический результат: повышение адгезии к обрабатываемой поверхности, эластичности, светостойкости, жизнеспособности, укрывистости, стойкости к статическому действию воды. 1 табл.

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

METHOD FOR PREPARING COATING AGENT FOR PRESERVED FLOWER OR DRIED FLOWER AND COATING AGENT PREPARED BY SAME METHOD

The present invention relates to: a method for preparing a coating agent for preserved flower or dried flower, the method comprising the step for mixing an aqueous resin adhesive mixed with an alcohol, an alcohol in which natural wax is dissolved, talc, and aroma essence, followed by stirring; and a coating agent for preserved flower or dried flower, prepared by the method. The coating agent of the present invention can prevent discoloration or decoloration, has a waterproofing effect, prevents the breakage of the flower due to the increased hardness of the coated flower, gives a natural luster and a smooth texture, and maintains the intrinsic color and state for a longer period of time. COPYRIGHT KIPO 2016 (A1,A2) Non-treament (B1,B2) Fondue once (C1,C2) Fondue twice (D1,D2) Spray ...

КОМПОЗИЦИЯ ДЛЯ ЗАЩИТНОГО ПОКРЫТИЯ

Композиция для защитного покрытия, включающая латекс, наполнитель, пигмент, 10-50%-ный водный раствор щелочи и воду, отличающаяся тем, что она дополнительно содержит карбамид, причем в качестве латекса использована смесь акрилатного, бутадиен-стирольного мягкого и бутадиен-стирольного жесткого латексов при следующем соотношении компонентов, мас.%: Акрилатный латекс 30,0-38,0 Бутадиен-стирольный мягкий латекс 10,0-19,0 Бутадиен-стирольный жесткий латекс 5,0-9,0 Наполнитель 12,0-21,0 Пигмент 0,5-6,5 Карбамид 0,5-2,0 10-50-ный водный раствор щелочи 0,1-2,0 Вода Остальное.

Method of making a polymer article and resulting article

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

LATEX POLYMER FOR IMPROVED PAINT WASHABILITY

The present invention is directed to a coating composition or paint comprising a polymer system including one or more latex polymers, wherein the acid content and molecular weight of the latex polymers are balanced to provide a coating composition that demonstrates optimal performance characteristics of washability or stain resistance, especially when used in a flat finish paint.

COMPOSITION FOR COVERING REDUTÍVEL IN WATER; E LATEX THAT IS USEFUL IN THE COVERING MANUFACTURE REDUTÍVEIS IN WATER AUTO-RETICULÁVEIS

SELF-CROSS-LINKING COATING FORMULATION

PROBLEM TO BE SOLVED: To provide a water-dolutive self-cross-linking coating compsn. having an excellent solvent resistance, a short drying time, and an improve adhesiveness. SOLUTION: The compsn., such as a paint, contains noor extremely low levels of volatile org. compds, and comprises water (1), a resin (2) comprising repeating units derived from about 30wt.% to about 75wt.% arom. vinyl mponomers (a), about 20wt.% to about 65wt.% alkyl acrylate monomers (b), about 1wt.% to about 8wt.% alkyl propenoic acid monomers (c), and about 0.5wt.% to about 5wt.% acryloyloxyalkenyltrialkoxysilane monomers (d), a wetting agent (3), and a defoamer (4). COPYRIGHT: (C)1998,JPO ...

POLYESTER/ACRYL HYBRIDLATEX MIT EINER KLEINEN TEILCHENGRÖSSE

Method of making a polymer article and resulting article

КОМПОЗИЦИЯ ДЛЯ ЗАЩИТНОГО ПОКРЫТИЯ

Изобретение относится к составам на основе латекса для получения защитных покрытий на полимерных материалах, металле, дереве, древесно-стружечных и древесно-волокнистых плитах, бетоне, керамике, картоне, бумаге и других материалах. Композиция включает, мас%: акрилатный латекс 30,0-38,0; бутадиен-стирольный мягкий латекс 10,0-19,0; бутадиен-стирольный жесткий латекс 5,0-9,0; наполнитель 12,0-21,0; пигмент 0,5-6, 5; карбамид 0,5-2,0; 10-50%-ный водный раствор щелочи 0,1-2,0 и воду - остальное. Технический результат - получение покрытия, которое обладает высокой стойкостью в атмосферных условиях, под воздействием климатических факторов и влажного истирания, его можно наносить на материалы посредством предварительного нанесения композиции пленочным слоем на подложку и последующего термопереноса этого слоя с подложки на покрываемую поверхность. 2 табл.

СИНТЕТИЧЕСКИЙ ЛАТЕКС И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретения относятся к области химии, в частности к синтетическим латексам на основе полимеров, предназначенным для наружного покрытия строительных конструкций. Синтетический латекс на основе полимера, диспергированного в воде, включающий эмульгатор, с содержанием дисперсных частиц 40-60% к общей массе, где в качестве основы содержится дисперсия полисульфидного полимера, полученная поликонденсацией полисульфида натрия с шихтой органических мономеров, представляющих собой смесь: или 1,2-дихлорэтана и 1,2-дихлорпропана; или 1,2-дихлорэтана и 2,2'-дихлордиэтилформаля; или 2,2'-дихлордиэтилформаля и 1,2,3-трихлорпропана при мольном соотношении полисульфида натрия и шихты мономеров 1,07:1,00 соответственно. Способ получения синтетического латекса. Изобретение обеспечивает увеличение срока службы строительных конструкций. 2 н. и 4 з.п. ф-лы, 4 пр.

СИНТЕТИЧЕСКИЙ ЛАТЕКС И СПОСОБ ЕГО ПОЛУЧЕНИЯ

... 1. Синтетический латекс для защитных покрытий строительных конструкций на основе полимера, диспергированного в воде, включающий эмульгатор, отличающийся тем, что в качестве основы используется дисперсия полисульфидного полимера, полученная поликонденсацией полисульфида натрия с органическими хлорсодержащими мономерами при мольном соотношении 1,07:1,00, соответственно, в присутствии эмульгатора, содержащий:дисперсных частиц - 40-60%,вода - остальное.2. Синтетический латекс по п.1, отличающийся тем, что в качестве органических хлорсодержащих мономеров используется шихта, содержащая либо смесь 1,2-дихлорэтанаи 1,2-дихлорпропана в соотношении мас.ч. 1:1;или смесь 1,2-дихлорэтана и 2,2'-дихлордиэтилформаля в соотношении мас.ч. 1,0:2,5;или смесь 2,2'-дихлордиэтилформаля и 1,2,3-трихлорпропана в соотношении мас.ч. 100:1.3. Синтетический латекс по п.1, отличающийся тем, что в качестве эмульгатора используется, например, динатриевая соль нафталинсульфокислоты, в количестве 0,5% к общей массе мономеров ...

금속 파이프 코팅 조성물 및 이를 이용한 압출품의 제조방법

... 본 발명은 금속 파이프 코팅 조성물 및 이를 이용한 압출품의 제조방법에 관한 것으로, 피막 형성 공중합체, 백색 광차단제 및 망상 구조체의 조합으로 이루어진 금속 파이프 코팅 조성물을 제공함으로써 금속 파이프 기재 상에 별도의 프라이머 층을 필요로 하지 않고 우수한 부식방지, 내후성, 내약품성, 정전기 방지, 접촉감촉, 외관 등을 구현하는 효과를 제공한다.

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

КРОЮЩАЯ КРАСКА

Использование: кроющая краска для работы на бумаге, негативных и позитивных фотоматериалах, синтетических пленках и дереве. Сущность изобретения: кроющая краска содержит водную пасту техуглерода 12,8 - 18,5% смесь латекса БНК - 302 на основе нитрила акриловой кислоты с латексом бутилкаучука в массовом соотношении 1:1,5 12,8 - 20,0%, глицерин 1,8 - 2,5% метацид - гексаметиленгуанидингидрохлорид 0,05 - 0,07%, диамид угольной кислоты 8,8 - 10,0%, воду остальное. Компоненты смешивают в емкости с мешалкой в течение 1 ч. Характеристики свойств: адгезия к бумаге, дереву, к синтетической пленке 1 балл, укрывистость 25-45 г/см2, время высыхания 40 - 50 с. 2 табл.

Method of making a polymer article and resulting article

TEMPORARY VISUAL INDICATORS FOR PAINT AND OTHER COMPOSITIONS

The present invention concerns novel methods and compositions useful for providing a temporary visual indication of the location, concentration, and/or time period of treatment of an applied material. The subject invention provides compositions and methods that use a temporary visual indicator. In certain embodiments, the temporary visual indicator is a pH sensitive visual agent (i.e., dye) that can be added either alone or in combination with other visual agents and/or pH modifying agents. In related embodiments, compositions of the invention comprise a combination of at least one pH modifying agent and at least one pH-sensitive visual agent.

SELF-CROSSLINKING COATING FORMULATION

This invention relates to the synthesis of a latex which can be used in making water-reducible self-crosslinking coating compositions, such as paints, which contain no or extremely low levels of volatile organic compounds. Coatings which are formulated with the latex of this invention offer an environmental advantage as well as excellent solvent resistance, excellent flexibility and excellent ultra-violet light resistance. This invention more specifically discloses a water-reducible coating composition which is comprised of (1) water; (2) a resin having repeat units which are derived from (a) about 30 to about 75 weight percent vinyl aromatic monomers, (b) about 20 to about 65 weight percent of alkyl acrylate monomers, (c) about 1 to about 8 weight percent alkyl propenoic acid monomers and (d) about 0.5 to about 5 weight percent acryloxyalkenyltrialkoxysilane monomers, based on 100 weight percent monomers; (3) a wetting agent; and (4) a defoamer. Gamma-methacryloxypropyltrimethoxysilane ...

КОМПОЗИЦИЯ ДЛЯ ПОЛУЧЕНИЯ ГИДРОИЗОЛЯЦИОННЫХ ПОКРЫТИЙ

Изобретение относится к области строительных материалов и может быть использовано в качестве защитного и покрасочного покрытия строительных конструкций и сооружений из железобетона, кирпича, шифера, древесины и др. Предложена композиция для получения гидроизоляционных покрасочных покрытий строительных материалов, составленных на основе водных дисперсий полимеров (латексов). Композиция состоит из полиакрилатного или бутадиенстирольного латексов, эпоксидной диановой смолы, эмульгатора - поливинилового спирта, наполнителя - диоксида титана или диоксида цинка, отвердителя - полиэтиленполиамина и воды в качестве разбавителя. Композиции нетоксичны, негорючи, взрывобезопасны и характеризуются высокой адгезией к строительным материалам, низким водопоглощением и высокой укрывистостью, что позволяет рекомендовать их в качестве гидроизоляционного и покрасочного материала для строительных конструкций. Введение в состав композиций различных пигментов позволяет получать покрытия широкой гаммы цветов.

СПОСОБ ПРИГОТОВЛЕНИЯ ГРУНТОВКИ

Изобретение относится к строительным материалам и может быть использовано при производстве отделочных работ, а именно при изготовлении грунтовки для обработки поверхности строительных изделий перед нанесением декоративных и защитных покрытий. В способе приготовления грунтовки, включающем получение минеральной пасты и органического связующего и их последующее смешение, минеральную пасту получают перетиром предварительно изготовленных смесей мела, двуокиси титана и части водного раствора триполифосфата натрия и смеси пигмента и остальной части водного раствора триполифосфата натрия, а связующее получают смешением (мас.%), синтетического латекса 32 - 80, водных растворов поверхностно-активного вещества - оксиэтилированного алкилфенола - ОП-7 0,4 - 3, загустителя 0 - 3,0, триполифосфата натрия 1,0 - 5,0, метоцела 0 - 49, щелочи 0,5 - 10, пеногасителя 0,5 - 4,8, антифриза 0 - 5,0, коалесцента 0 - 14,0, трехокиси сурьмы в количестве 0,5 - 6,0. Причем при смешении минеральной пасты и органического ...

식품 및 음료 용기와 같은 패키징 물품을 위한 코팅 조성물

... 금속 기재(30, 32), 및 금속 기재(30, 32)의 적어도 일부분 상에 배치된 코팅(34)을 포함하는, 식품 또는 음료 용기(20), 또는 그의 일부분을 포함하는 물품. 코팅(34)은 바람직하게는 제1-단계 유화 중합된 공중합체 및 제2-단계 유화 중합된 공중합체를 갖는 유화 중합된 라텍스를 포함하는 코팅 조성물로부터 형성된다.

LATEX PHOSPHORUS ACID FUNCTIONALIZED PHOTOINITIATOR GROUPS

Method of making a polymer article and resulting article

A polymer article formed from a cured carboxylated nitrile latex, wherein a first compound containing carbodiimide groups; a second compound containing carboxylated groups; and a pH adjustor consisting of ammonium hydroxide; are reacted together to form a cured carboxylated nitrile latex being free of any one of a crosslinking agent containing sulphur; zinc oxide; stearic acid; and an accelerator; wherein the first compound comprises at least one of a mono-carbodiimide, di-carbodiimide, tri-carbodiimide, tetra-carbodiimide, oligo-carbodiimide and poly-carbodiimide; and wherein the second compound comprises at least one of modified natural rubber latex, synthetic polymers based on acrylonitrile, butadiene, isoprene, styrene, chloroprene, ethylene, vinyl chloride and copolymers, blends and mixtures thereof. The accelerator may comprise carbamates, thiazoles, thioureas, sulphenamides, xanthates, guanidines or their derivatives. Preferably, the latex polymer article may also comprise a pigment ...

FUNCTIONALIZED POLYMER COMPOSITIONS FOR LOW VOC COALESCENCE OF WATER BASED EMULSIONS

A coating composition is described that has good film forming and blocking properties in a composition that also has low or no VOCs. The coating compositions herein include functionalized urethane (meth)acrylate polymers that allow better film formation and particle coalescence while maintaining the low or no VOC levels. In one aspect, the coating compositions include functionalized polymers with a higher glass transition temperature (Tg) to aid in achieving good block resistance but a low minimum film forming temperature (MFFT) to achieve good particle coalescence and film formation all while being substantially free of co solvents, coalescent aid and/or plasticizers.

LATEX POLYMER FOR IMPROVED PAINT WASHABILITY

The present invention is directed to a coating composition or paint comprising a polymer system including one or more latex polymers, wherein the acid content and molecular weight of the latex polymers are balanced to provide a coating composition that demonstrates optimal performance characteristics of washability or stain resistance, especially when used in a flat finish paint.

SMALL PARTICLE SIZE POLYESTER/ACRYLIC HYBRID LATEXES

This invention provides the preparation of water-dispersible polyester/acrylic hybrids via a two-stage emulsion polymerization process. For example, methacrylic acid and/or 2-hydroxyethyl methacrylate are copolymerized with styrene/acrylic monomers to yield a relatively hydrophilic and hydroplasticized first stage. Subsequent additions of hydrophobic monomers to this first stage "seed" result in an inversion of the latex such that the more hydrophilic first stage is at the particle surface. This results not only in improved stability of the resulting latex without the use of additional surfactants, as evidenced by the production of reduced amounts of coagulum, while it also offers relatively low minimum filming temperatures due to the hydroplasticization of the shell of the particle. Furthermore, the use of the water-dispersible polyester results in extremely fine latex particle sizes which can significantly enhance coating properties such as film gloss and clarity.

POLYMER LATEX, COMPOSIOTION FOR METAL SURFACE COATING, METAL COMPLEX, PREPARATION METHOD OF COMPOSIOTION FOR METAL SURFACE COATING

Method of making a polymer article and resulting article

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

SMALL PARTICLE SIZE POLYESTER/ACRYLIC HYBRID LATEXES

This invention provides the preparation of water-dispersible polyester/acryl ic hybrids via a two-stage emulsion polymerization process. For example, methacrylic acid and/or 2-hydroxyethyl methacrylate are copolymerized with styrene/acrylic monomers to yield a relatively hydrophilic and hydro- plasticized first stage. Subsequent additions of hydrophobic monomers to thi s first stage "seed" result in an inversion of the latex such that the more hydrophilic first stage is at the particle surface. This results not only in improved stability of the resulting latex without the use of additional surfactants, as evidenced by the production of reduced amounts of coagulum, while it also offers relatively low minimum filming temperatures due to the hydroplasticization of the shell of the particle. Furthermore, the use of th e water-dispersible polyester results in extremely fine latex particle sizes which can significantly enhance coating properties such as film gloss and clarity.

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

SELF-CROSSLINKING TYPE POLYMER LATEX COMPOSITION

PURPOSE: To obtain a latex excellently suppressing stain by simultaneously subjecting a hydrolyzable silane and a radically polymerizable monomer. CONSTITUTION: (a) A polymer latex prepared by subjecting a hydrolyzable silane, an aldo group- or keto group-containing monomer and another ordinary monomer to emulsion polymerization is blended with (b) a hydrazine derivative to give a cold self-crosslinking type latex composition. Since a coating film having excellent luster retention and stain suppression, glossy appearance can be maintained even in long-term exposure. COPYRIGHT: (C)1992,JPO&Japio ...

POLYMER LATEX HAVING EXCELLENT CORROSION RESISTANCE AND MOLDABILITY, A COMPOSITION FOR COATING METAL SURFACE, A METAL COMPLEX, AND A MANUFACTURING METHOD OF THE COMPOSITION

PURPOSE: Polymer latex is provided to provide coating material for metal surface by simple process not using organic solvent or surfactant. CONSTITUTION: Polymer latex comprises repeating units in chemical formula 1, chemical formula 2, chemical formula 3, and chemical formula 4. In chemical formula 1, R1 is a C3-20 alkyl group, and m is an integer from 1-4,000. In chemical formula 2, n is an integer from 1-4,000. In chemical formula 3, l is an integer from 1-4,000. In chemical formula 4, R2 and R3 are same or different each other, is respectively a C1-3 alkyl group, or phenyl group, and k is an integer form 1-4,000. The metal-surface coating composition comprises the polymer latex, a crosslinking agent, and water. COPYRIGHT KIPO 2012 ...

RFL film or adhesive dip coating comprising carbon nanotubes and yarn comprising such a coating

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

FLAME RETARDANT VAPOR RETARDING MEMBRANES

The present disclosure relates generally to flame retarding building materials and methods for making them. More particularly, the present disclosure relates to flame retarding building materials that have both flame retardant character and desirable water vapor permeability values. In one embodiment, the disclosure provides a flame retardant vapor retarding membranes comprising: a building material substrate sheet having a melt viscosity of about 1 Pa·s to about 100,000 Pa·s at about 300° C. at 1 rad/s; and a polymeric coating layer disposed on the building material substrate layer, wherein the coating layer has a melt viscosity of about 1 Pa·s to about 100,000 Pa·s at about 300° C. at 1 rad/s. 1. A flame retardant vapor retarding membrane , comprisinga building material substrate sheet having a melt viscosity of about 1 Pa·s to about 100,000 Pa·s at measured at 300° C. and 1 rad/s; anda polymeric coating layer coated on the substrate sheet, the polymeric coating layer having a melt viscosity of about 1 Pa·s to about 100,000 Pa·s measured at 300° C. and 1 rad/s.2. The flame retardant vapor retarding membrane of claim 1 , configured to have a water vapor permeance of no more than about 2.5 Perm at 25% relative humidity claim 1 , as tested by ASTM E96 at 23° C. claim 1 , and having a thickness in the range of 5 microns to 1000 microns.3. The flame retardant vapor retarding membrane of claim 1 , configured to have a water vapor permeance of at least about 5 Perms at 95% relative humidity claim 1 , as tested by ASTM E96 at 23° C.4. The flame retardant vapor retarding membrane of claim 1 , wherein the building material substrate sheet is a non-woven fabric or a perforated sheet comprising polypropylene claim 1 , nylon claim 1 , poly(ethylene terephthalate) claim 1 , another polyester or copolyester claim 1 , polystyrene claim 1 , acrylonitrile/butadiene/styrene copolymer claim 1 , or polyethylene.5. The flame retardant vapor retarding membrane of claim 1 , wherein the ...

Method of making a polymer article and resulting article

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

COATED BALLOON WITH COLOR AND SHIMMERING EFFECTS AND PROCESS OF MAKING THE SAME

A coated balloon with color and shimmering effects and process of making the same. A balloon may be placed on a mould apparatus. A balloon having a rubber ink solution applied to the surface by a dipping process allowing the entire surface of the latex balloon to be coated by the rubber ink solution. The balloon having specific amount of glitter rotationally applied to the entire surface. The latex balloon coated, treated and cured to allow for the ink and glitter to remain affixed to the entire balloon surface in a deflated and expanded state.

Method of making a polymer article and resulting article

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

Method of making a polymer article and resulting article

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

METHOD OF MAKING A POLYMER PRODUCT AND THE RESULTING PRODUCT

SUBSTITUTED CATECHOL MONOMERS, COPOLYMERS AND METHODS FOR USE

Disclosed are novel substituted catechol monomers, polymers made with the substituted catechol monomers, pH responsive polymers made with the substituted catechol monomers, and related methods. Also provided is a method of preparing an aqueous coating composition such as a latex paint including the above components.

POLYESTER/ACRYL HYBRIDLATEX MIT EINER KLEINEN TEILCHENGRÖSSE

METHODS AND SYSTEMS FOR IMPROVING OPEN TIME AND DRYING TIME OF LATEX BINDERS AND AQUEOUS COATINGS

SMALL PARTICLE SIZE POLYESTER/ACRYLIC HYBRID LATEXES

This invention provides the preparation of water-dispersible polyester/acrylic hybrids via a two-stage emulsion polymerization process. For example, methacrylic acid and/or 2-hydroxyethyl methacrylate are copolymerized with styrene/acrylic monomers to yield a relatively hydrophilic and hydro-plasticized first stage. Subsequent additions of hydrophobic monomers to this first stage "seed" result in an inversion of the latex such that the more hydrophilic first stage is at the particle surface. This results not only in improved stability of the resulting latex without the use of additional surfactants, as evidenced by the production of reduced amounts of coagulum, while it also offers relatively low minimum filming temperatures due to the hydroplasticization of the shell of the particle. Furthermore, the use of the water-dispersible polyester results in extremely fine latex particle sizes which can significantly enhance coating properties such as film gloss and clarity.

SMALL PARTICLE SIZE POLYESTER/ACRYLIC HYBRID LATEXES

SPRAYING FAST-SETTING RUBBER ASPHALT WATERPROOF MATERIAL SPECIAL FOR EXTERIOR WALL AND PREPARATION METHOD THEREOF

A spraying fast-setting rubber asphalt waterproof material special for exterior wall and a preparation method thereof belong to the field of waterproof coatings. Said waterproof material comprises a component A and a component B. The component B is a coagulant solution formulated by adding water to calcium chloride, sodium chloride and a composite aluminum-iron polymer. The component A comprises 30 to 50 parts of a polymer latex, 50 to 70 parts of an emulsified asphalt, 5 to 30 parts of a reinforcing aid, and 0.3 to 1.5 parts of other aid. The reinforcing aid is a nano silica sol. The other aid is one or more of an antioxidant, a light stabilizer, a mildew preventive and a defoamer. The polymer latex is selected from latexes having a high gel content, and a nano silica sol is added into the component A. After film formation, the tensile strength is ≥ 1.2 MPa, the elongation is ≥ 1000%, and the bonding strength is ≥ 0.8 Mpa. The waterproofing material has good high and low-temperature performance ...

폴리머 물품의 제조 방법 및 제조된 물품

... 폴리머 물품의 제조 방법은 카르보디이미드 기를 함유한 제1 화합물을 카르복시화된 기를 함유한 제2 화합물과 혼합하여 폴리머 용액을 제조하는 단계, 상기 폴리머 용액을 형성틀에 적용하는 단계 및 상기 폴리머 용액을 경화하는 단계를 포함하며, 상기 적용 단계는 폴리머 용액을 제조한 지 2시간 이내에 이루어진다. 폴리머 용액은 암모늄 하이드록사이드로 구성된 pH 조절제를 포함할 수 있다.

SMALL PARTICLE SIZE POLYESTER/ACRYLIC HYBRID LATEXES

This invention provides the preparation of water-dispersible polyester/acrylic hybrids via a two-stage emulsion polymerization process. For example, methacrylic acid and/or 2-hydroxyethyl methacrylate are copolymerized with styrene/acrylic monomers to yield a relatively hydrophilic and hydro-plasticized first stage. Subsequent additions of hydrophobic monomers to this first stage "seed" result in an inversion of the latex such that the more hydrophilic first stage is at the particle surface. This results not only in improved stability of the resulting latex without the use of additional surfactants, as evidenced by the production of reduced amounts of coagulum, while it also offers relatively low minimum filming temperatures due to the hydroplasticization of the shell of the particle. Furthermore, the use of the water-dispersible polyester results in extremely fine latex particle sizes which can significantly enhance coating properties such as film gloss and clarity.

LATEX POLYMER FOR IMPROVED PAINT WASHABILITY

The present invention is directed to a coating composition or paint comprising a polymer system including one or more latex polymers, wherein the acid content and molecular weight of the latex polymers are balanced to provide a coating composition that demonstrates optimal performance characteristics of washability or stain resistance, especially when used in a flat finish paint.

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

Composição para revestimento redutível em água e látex que é útil na fabricação de revestimentos redutíveis em água auto-reticuláveis

LATEX POLYMER FOR IMPROVED PAINT WASHABILITY

For improved coating can be in the shape of the latex polymer

Flame retardant vapor retarding membranes

The present disclosure relates generally to flame retarding building materials and methods for making them. More particularly, the present disclosure relates to flame retarding building materials that have both flame retardant character and desirable water vapor permeability values. In one embodiment, the disclosure provides a flame retardant vapor retarding membranes comprising: a building material substrate sheet having a melt viscosity of about 1 Pa·s to about 100,000 Pa·s at about 300° C. at 1 rad/s; and a polymeric coating layer disposed on the building material substrate layer, wherein the coating layer has a melt viscosity of about 1 Pa·s to about 100,000 Pa·s at about 300° C. at 1 rad/s.

látex funcionalizado com ácido de fósforo e grupos fotoiniciadores

FLAME RETARDANT VAPOR RETARDING MEMBRANES

The present disclosure relates generally to flame retarding building materials and methods for making them. More particularly, the present disclosure relates to flame retarding building materials that have both flame retardant character and desirable water vapor permeability values. In one embodiment, the disclosure provides a flame retardant vapor retarding membranes comprising: a building material substrate sheet having a melt viscosity of about 1 Pa·s to about 100,000 Pa·s at about 300° C. at 1 rad/s; and a polymeric coating layer disposed on the building material substrate layer, wherein the coating layer has a melt viscosity of about 1 Pa·s to about 100,000 Pa·s at about 300° C. at 1 rad/s.

COATING COMPOSITION

PROBLEM TO BE SOLVED: To obtain a coating composition for providing an inorganic material molding with excellent waterproofness and sufficient adhesiveness to mortar, etc. SOLUTION: The coating composition comprises at least one kind of rubber latex selected from an SBR latex and an EPDM latex and at least one kind of an organosilane emulsion selected from an alkylalkoxysilane emulsion and an alkylalkoxysiloxane emulsion. Preferably the amount of the organosilane component of the organosilane emulsion is normally 5-1,000 parts wt. based on 100 parts wt. of the rubber component of the rubber latex. Preferably the average particle diameter of the rubber component of the rubber latex is normally ≤10μm and that of the organosilane component of the organosilane emulsion is normally ≤10μm. COPYRIGHT: (C)2006,JPO&NCIPI ...

NEW REACTIVE SURFACTANTS FOR FREEZE-THAW STABLE EMULSION POLYMERS AND COATINGS THEREOF

The invention provides aqueous coating composition having freeze thaw stability, comprising: (a) at least one latex polymer derived from at least one monomer and at least one reactive surfactant of the formula R1O(CH2CHR2O)x(CH2CH2O)y(CH2CHR3O)zR4 where R1 is either alkyl, aryl, alkylaryl, or aralkylaryl of 8-30 carbon atoms, R2 is CH2OCH2CHCH2 (AGE); R3 is either H, CH3, or CH2CH3; R4 is H or SO3M or PO3M where M is H or K, Na, NH4, NR4, alkanolamine, or other cationic species and x=2-100; y=4-200 and z=0-50.

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

método de fabricação de um produto polimérico e o produto resultante

SUBSTITUTED CATECHOL MONOMERS, COPOLYMERS AND METHODS FOR USE

METHOD OF MAKING A POLYMER ARTICLE AND RESULTING ARTICLE

Small particle size polyester/acrylic hybrid latexes

This invention provides the preparation of water-dispersible polyester/acrylic hybrids via a two-stage emulsion polymerization process. For example, methacrylic acid and/or 2-hydroxyethyl methacrylate are copolymerized with styrene/acrylic monomers to yield a relatively hydrophilic and hydro-plasticized first stage. Subsequent additions of hydrophobic monomers to this first stage "seed" results in an inversion of the latex such that the more hydrophilic first stage is at the particle surface. This results not only in improved stability of the resulting latex without the use of additional surfactants, as evidenced by the production of reduced amounts of coagulum, while it also offers relatively low minimum filming temperatures due to the hydroplasticization of the shell of the particle. Furthermore, the use of the water-dispersible polyester results in extremely fine latex particle sizes which can significantly enhance coating properties such as film gloss and clarity.

Method of making a polymer article and resulting article

A method of making a polymer article comprises the steps of making a polymer solution by mixing a first compound containing carbodiimide groups with a second compound containing carboxylated groups, applying the polymer solution to a former, wherein the step of applying occurs within 2 hours of the making of the polymer solution, and curing the polymer solution. The polymer solution can have a pH adjuster consisting of ammonium hydroxide.

Small particle size polyester/acrylic hybrid latexes

This invention provides the preparation of water-dispersible polyester/acrylic hybrids via a two-stage emulsion polymerization process. For example, methacrylic acid and/or 2-hydroxyethyl methacrylate are copolymerized with styrene/acrylic monomers to yield a relatively hydrophilic and hydro-plasticized first stage. Subsequent additions of hydrophobic monomers to this first stage "seed" results in an inversion of the latex such that the more hydrophilic first stage is at the particle surface. This results not only in improved stability of the resulting latex without the use of additional surfactants, as evidenced by the production of reduced amounts of coagulum, while it also offers relatively low minimum filming temperatures due to the hydroplasticization of the shell of the particle. Furthermore, the use of the water-dispersible polyester results in extremely fine latex particle sizes which can significantly enhance coating properties such as film gloss and clarity.

VINYLIDENE CHLORIDE COPOLYMER LATEX

PROBLEM TO BE SOLVED: To obtain a vinylidene chloride copolymer latex which forms, even in a high-humidity atmosphere, a film which is excellent in adhesiveness to a silicone release agent and does not exhibit separation with time by copolymerizing specified amounts of vinylidene chloride and a hydroxyl- containing radical-polymerizable monomer, which gives an OH value to the resultant copolymer, in the presence of a reactive emulsifier. SOLUTION: This copolymer latex is obtained by using 80-93 wt.% (based on the copolymer) vinylidene chloride, a hydroxyl-containing radical- polymerizable monomer in such an amount as to give a hydroxyl value of 5-50 mg/g and 0.5-3.0 wt.% (based on the total amount of monomers) reactive monomer (e.g. sodium alkylallylsulfosuccinate) and can form a film having a water vapor permeability (in terms of a film with a wt. of 5 g/m2) of 100 g/m2.24 hr or lower. The latex is applied to a slightly coated paper in a coating wt. of 25 g/m2 and dried at 80-190°C, and ...

LATEX POLYMER FOR IMPROVED PAINT WASHABILITY

The present invention is directed to a coating composition or paint comprising a polymer system including one or more latex polymers, wherein the acid content and molecular weight of the latex polymers are balanced to provide a coating composition that demonstrates optimal performance characteristics of washability or stain resistance, especially when used in a flat finish paint.

CROSS-LINKING AGENTS CONTAINING ISOCYANATE GROUPS FOR NITRILE RUBBERS

By the use of special cross-linkers that contain at least two isocyanate groups, hydroxyl group-containing optionally hydrogenated nitrile rubber polymers can be successfully cross-linked. Preferred cross-linkers contain allophanate, biuret, uretdione, uretonimine, bridged carbamate, carbodiimide, isocyanurate, iminooxadiazinedione or oxadiazinetrione structural elements. 2. Use according to claim 1 , characterized in that the compounds of the general formula (I) contain at least one allophanate claim 1 , biuret claim 1 , uretdione claim 1 , uretonimine claim 1 , bridged carbamate claim 1 , carbodiimide claim 1 , isocyanurate claim 1 , iminooxadiazinedione or oxadiazinetrione structure.4. Use according to one of to claim 1 , characterized in that the compound of the general formula (I) is a dimer or trimer of diisocyanates.5. Use according to one of to claim 1 , characterized in that the cross-linker is employed in the absence of tin-containing compounds.6. Use according to one of to claim 1 , characterized in that either no solvents at all or not more than 15% by weight of solvents claim 1 , preferably not more than 10% by weight claim 1 , particularly preferably not more than 5% by weight claim 1 , very particularly preferably not more than 2% by weight and especially preferably not more than 1% by weight of solvents are present in this claim 1 , in each case based on the hydroxyl group-containing (H)NBR rubber employed.7. Vulcanizable composition claim 1 , containing at least one hydroxyl group-containing (H)NBR rubber and at least one cross-linker claim 1 , as is defined in one of to .8. Vulcanizable composition according to claim 7 , characterized in that the (H)NBR rubber contains repeating units claim 7 , derived from at least one conjugated diene claim 7 , at least one α claim 7 ,β-unsaturated nitrile claim 7 , at least one copolymerizable hydroxyl group-containing monomer and optionally one or more other copolymerizable monomers and the C═C double bonds in ...

Latex Composition for Dip-Forming, Method for Preparing the Composition and Article Formed by the Composition

A latex composition for dip forming, and more particularly, to a latex composition for dip forming includes carboxylic acid-modified nitrile-based copolymer latex; and a phenolic emulsifier, wherein the phenolic emulsifier is included in an amount of 0.08 parts by weight to 6 parts by weight (based on a solid content) based on 100 parts by weight of the carboxylic acid-modified nitrile-based copolymer latex. A method for preparing the latex composition and a formed article produced using the latex composition are also provided. 1. A latex composition for dip forming , comprising:carboxylic acid-modified nitrile-based copolymer latex; anda phenolic emulsifier,wherein the phenolic emulsifier is included in an amount of 0.08 parts by weight to 6 parts by weight (based on a solid content) based on 100 parts by weight of the carboxylic acid-modified nitrile-based copolymer latex.3. The latex composition for dip forming of claim 2 , wherein R claim 2 , R claim 2 , and Rare each independently hydrogen claim 2 , or substituted or unsubstituted linear or branched alkyl having 1 to 10 carbon atoms; at least one of Rto Ris substituted or unsubstituted linear or branched alkyl having 1 to 30 carbon atoms; R is hydrogen claim 2 , a polymerizable functional group claim 2 , an alkoxy group having 1 to 10 carbon atoms claim 2 , an inorganic or organic salt claim 2 , a nonionic group claim 2 , or halogen; m is an integer of 1 to 5; and n is an integer of 8 to 25.4. The latex composition for dip forming of claim 2 , wherein a substituent substitutable for the linear or branched alkyl is one or more selected from the group consisting of linear or branched alkyl having 1 to 30 carbon atoms; cycloalkyl having 3 to 30 carbon atoms; aryl having 6 to 30 carbon atoms; and halogen.6. The latex composition for dip forming of claim 5 , wherein the polymerizable functional group is one or more selected from the group consisting of (meth)acrylate; alkyl (meth)acrylate having 1 to 30 carbon atoms ...

Antimicrobial examination gloves

A method of manufacturing nitrile rubber latex medical examination gloves during which (a) the glove formers are dipped into a coagulant solution containing divalent calcium cations and calcium nitrate particles, to which has been added a composition comprising Alcohol ethoxylate, Amine oxide, Ethylenediaminetetracetic acid, Glutaraldehyde, Chlorhexidine di-gluconate, Chlorhexidine di-hydrochloride, Salisept, Titanium Dioxide, nano particle silver; and during which (b) the coated glove formers are then dipped into a nitrile rubber latex dispersion to which has been added a composition comprising Alcohol ethoxylate, Amine oxide, Lactic acid, Ethylenedi-aminetetracetic acid, Glutaraldehyde, Salisept; and during which (c) the nitrile rubber latex gloves are finally placed in to packaging utilising a clear coat varnish that it is impregnated with a phenolic chlorine compound, micronised nanosilver colloid, and a quaternary compound. 1. A method of manufacturing nitrile rubber latex medical examination gloves during which (a) the glove formers are dipped into a coagulant solution containing divalent calcium cations and calcium nitrate particles , to which has been added a composition comprising 1% to 3% Alcohol ethoxylate , 0.1% to 0.5% Amine oxide , 0.1% to 0.5% Ethylenediaminetetracetic acid , 0.1% to 0.5% Glutaraldehyde , 0.5% to 1% Chlorhexidine di-gluconate , 0.5% and 1% Chlorhexidine di-hydrochloride , 0.1% to 0.25% Salisept , less than 0.2% Titanium Dioxide , less than 0.2% nano particle silver; and during which (b) the coated glove formers are then dipped into a nitrile rubber latex dispersion to which has been added a composition comprising 1% to 3% Alcohol ethoxylate , 0.1% to 0.5% Amine oxide , 0.1% to 0.3% Lactic acid , 0.1% to 0.5% Ethylenediaminetetracetic acid , 0.1% to 0.5% Glutaraldehyde , 0.1% to 0.25% Salisept; and during which (c) the nitrile rubber latex gloves are finally placed in to packaging utilising a clear coat varnish that it is impregnated ...

DIP-FORMED ARTICLE AND METHOD OF PRODUCTION OF DIP-FORMED ARTICLE

A dip-formed article obtained by dip forming a dip-forming composition containing a latex of a carboxyl group-containing nitrile rubber, wherein at least one surface is surface treated, a thickness is 0.02 to 0.2 mm, a coefficient of dynamic friction of the surface treated surface is 0.5 or less, and a tensile strength after surface treatment is 30 MPa or more is provided. 1. A dip-formed article obtained by dip forming a dip-forming composition containing a latex of a carboxyl group-containing nitrile rubber ,wherein at least one surface is surface treated, a thickness is 0.02 to 0.2 mm, a coefficient of dynamic friction of the surface treated surface is 0.5 or less, and a tensile strength after surface treatment is 30 MPa or more.2. The dip-formed article according to claim 1 , wherein an elongation at break after surface treatment is 500% or more.3. The dip-formed article according to claim 1 , wherein a rate of change of tensile strength before surface treatment and after surface treatment is less than 20%.4. The dip-formed article according to claim 1 , wherein the surface treatment is performed using an organohalogenating agent.5. The dip-formed article according to claim 1 , wherein the organohalogenating agent is trichloroisocyanuric acid.6. The dip-formed article according to claim 1 , which is a glove.7. A dip-formed article obtained by dip forming a dip-forming composition containing a latex of a carboxyl group-containing nitrile rubber claim 1 ,wherein at least one surface is surface treated using an organohalogenating agent.8. The dip-formed article according to claim 7 , wherein the organohalogenating agent is trichloroisocyanuric acid.9. A method of production of a dip-formed article comprising:dip-forming a dip-forming composition containing a latex of a carboxyl group-containing nitrile rubber so as to form a dip-formed layer; andsurface treating at least one surface of the dip-formed layer using an organohalogenating agent. The present invention ...

METHOD FOR GRAFTING A CARBOXYLIC ACID ESTER FUNCTION ONTO AN UNSATURATED POLYMER

A method for grafting a carboxylic acid ester function onto an unsaturated polymer, which comprises the reaction of a 1,3-dipolar compound with at least one unsaturation of the unsaturated polymer is provided. The 1,3-dipolar compound comprises a group Q and a group B connected to one another by a group A in which: 1. A method for synthesizing an unsaturated polymer comprising at least one carboxylic acid ester function along the polymer chain , which comprises the reaction of a 1 ,3-dipolar compound with at least one unsaturation of the unsaturated polymer , which 1 ,3-dipolar compound comprises a group Q and a group B connected to one another by a group A in which:Q comprises a dipole containing at least one nitrogen atom,B represents a carboxylic acid ester function, andA is an atom or a group of atoms connecting Q to B.3. A method according to claim 2 , in which the carbon-based group contains from 1 to 20 claim 2 , carbon atoms.4. A method according to claim 1 , in which A is a group containing up to 20 carbon atoms.5. A method according to claim 4 , in which A is an aliphatic group or an aromatic group.6. A method according to claim 5 , in which A is an alkylene group.7. A method according to claim 1 , in which the 1 claim 1 ,3-dipolar compound is selected from the group consisting of nitrile oxides claim 1 , nitrile imines and nitrones.9. A method according to claim 8 , in which R claim 8 , Rand Rare identical.10. A method according to claim 8 , in which R claim 8 , Rand Rare each an alkyl group of 1 to 6 carbon atoms.11. A method according to claim 10 , in which R claim 10 , Rand Rare each a methyl or ethyl.12. A method according to claim 8 , in which the fifth symbol denotes an indirect attachment to A.13. A method according to claim 12 , in which the fifth symbol represents a heteroatom.16. A method according to claim 1 , in which the 1 claim 1 ,3-dipolar compound is reacted according to a stoichiometry of between 0 and 5 molar equivalents of ester ...

Mixed Ionic Electronic Conductors for Improved Charge Transport in Electrotherapeutic Devices

This invention addresses the need for efficient dry skin electrodes. Robust, flexible Mixed Ionic Electronic Conductor (MIEC) electrodes were prepared by an aqueous solution route resulting in electrically conductive networks of carbon nanotubes (CNTs) and ionically conductive elastic matrix. The flexible electrode was characterized in terms of conductivity, ionic charge transfer resistance, and water uptake. The flexible electrode maintained low resistance even after multiple cycles of 50% extension and contraction. 17-. (canceled)8. An electrode , comprising:elastomer, CNTs, and a glycosaminoglycan;and characterizable by:a conductivity of at least 1000 mS/cm that changes by less than 10% after 5 strain cycles of extending the material by 50% and allowing to contract.9. The electrode of comprising a conductivity of at least 1000 mS/cm to about 3000 mS/cm that changes by less than 10% after 5 strain cycles of extending the material by 50% and allowing to contract.10. The electrode of wherein the ratio of partial conductivity of a charge carrier to the total conductivity claim 8 , transference number claim 8 , ti of the electrode is at least 0.10 claim 8 , preferably at least 0.13 claim 8 , in some embodiments in the range of 0.10 to about 0.20 or 0.15 to about 0.20.11. A method of making a flexible electrode suitable for neuromuscular electrical stimulation claim 8 , comprising:forming an aqueous dispersion of CNTs and a glycosaminoglycan;combining the aqueous dispersion with an aqueous emulsion of an elastomer to form a composite precursor;depositing the precursor onto a surface, removing water, and curing the elastomer to form the electrode.12. The method of further comprising treating the electrode with aqueous sodium chloride.1334-. (canceled)35. A method of administering a medicine through the skin claim 11 , comprising:applying the electrode of any of the previous claims onto the skin of an animal;wherein the electrode comprises a medicine;applying a potential ...

Latex Composition For Dip-Molding, And Molded Article Prepared From Same

The present invention relates to a latex composition for dip-molding and a molded article produced therefrom. More specifically, the above composition can be used to prepare the dip-molded articles having gentle syneresis, no stickiness, and excellent chemical resistance by using monoglyceride. 1. A latex composition for dip-molding characterized by comprising a carboxylic acid-modified nitrile based copolymer latex copolymerized from conjugated diene-based monomers , ethylenically unsaturated nitrile monomers and ethylenically unsaturated acid monomers; and monoglyceride.2. The latex composition for dip-molding according to claim 1 , characterized in that the latex composition for dip-molding contains 0.01 to 5 parts by weight of the monoglyceride based on 100 parts by weight of carboxylic acid-modified nitrile based copolymer.3. The latex composition for dip-molding according to claim 1 , characterized in that the monoglyceride is at least one selected from the group consisting of glycerol monolaurate claim 1 , glycerol monostearate claim 1 , glycerol monobehenate claim 1 , glycerol monocaprylate claim 1 , and glycerol monocaprate.4. The latex composition for dip-molding according to claim 1 , characterized in that the carboxylic acid-modified nitrile-based copolymer is copolymerized from 40 to 89 wt. % of the conjugated diene-based monomer claim 1 , 10 to 50 wt. % of ethylenically unsaturated nitrile monomer and 0.1 to 10 wt. % of ethylenically unsaturated acid monomer based on the total sum of 100% by weight of the monomers.5. The latex composition for dip-molding according to claim 1 , characterized in that the conjugated diene-based monomer is at least one selected from the group consisting of 1 claim 1 ,3-butadiene claim 1 , 2 claim 1 ,3-dimethyl-1 claim 1 ,3-butadiene claim 1 , 2-ethyl-1 claim 1 ,3-butadiene claim 1 , 1 claim 1 ,3-pentadiene and isoprene.6. The latex composition for dip-molding according to claim 1 , characterized in that the ethylenically ...

METHODS FOR PROMOTING PRODUCTION OF VIABLE SEEDS FROM APOMICTIC GUAYULE PLANTS

Described herein are methods for producing guayule seeds, guayule plants, and products generated therefrom. More specifically, the disclosure provides methods for the production of viable seeds from apomictic guayule plants, seeds produced by such methods, plants grown from such seeds, plant parts, biomass, and biomaterials derived therefrom. 1. A method for promoting the production of viable hybrid guayule seeds from an interploidy cross , said method comprising:selecting a female guayule plant and a pollinator plant, wherein said a female guayule plant is apomictic and said pollinator plant is capable of producing fertile pollen;pollinating said female guayule plant with pollen from said pollinator plant to produce seeds on said apomictic female guayule plant, wherein at least 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%. 45%, 55%, 60%, 70%, 80%, 90%, or 95% of said hybrid seeds are viable or wherein the percentage of viable hybrid seeds produced are within a range defined by any two of the aforementioned percentages.2. The method of claim 1 , wherein said pollinator plant is a tetraploid guayule plant.3. The method of claim 1 , wherein said female guayule plant is selected from a triploid guayule plant claim 1 , a pentaploid guayule plant claim 1 , or a heptaploid guayule plant.4Parthenium. The method of claim 1 , wherein said female guayule plant and said pollinator plant belong to the same species.5PartheniumParthenium argentatum.. The method of claim 4 , wherein said species is6Parthenium. The method of claim 1 , wherein said female guayule plant and said pollinator plant belong to two different species.7Parthenium argentatum. The method of claim 1 , wherein said female guayule plant is a plant.8P. alpinum, P. argentatum, P. cineraceum, P. confertum, P. fruticosum, P. hysterophorus, P. incanum, P. integrifolium, P. ligulatum, P. rollinsianum, P. schottiiP. tomentosum.. The method of claim 1 , wherein the pollinator plant is of a species selected from the group ...

RECYCLABLE CROSS-LINKED DIENE ELASTOMERS COMPRISING FURANYL GROUPS AND PRECURSORS THEREOF

Disclosed are new precursors of recyclable cross-linked diene elastomers including chain-end units with furanyl groups, their use in the preparation of the recyclable elastomers and their process of preparation. Also disclosed are new recyclable cross-linked diene elastomers, their preparation process and their uses. 115-. (canceled)20. The compound of claim 16 , wherein A consists of repeating units (U).22. The compound of claim 16 , wherein Ris H or a (C-C)alkyl group.23. The compound of claim 16 , wherein Z is —O— and W is —C(═O)—NH—Y′—.27. A polymer claim 16 , susceptible to be obtained by the reaction of a compound of formula (I) as defined in claim 16 , with a crosslinking agent comprising at least two maleimidyl groups.29. The polymer of claim 27 , wherein the polymer is an elastomer.30. The compound of claim 16 , wherein W and W′ are independently of each other selected from the group consisting of: —C(═O)—NH—Y′— claim 16 , —C(═O)—Y′— claim 16 , and —Y′— groups claim 16 , Y′ representing a (C-C)alkylene group.33. The compound of claim 18 , wherein the repeating units (V) are identical.34. The compound of claim 17 , wherein A consists of repeating units (U).35. The compound of claim 17 , wherein Ris H or a (C-C)alkyl group. The present invention concerns new precursors of recyclable cross-linked diene elastomers, their use in the preparation of said recyclable elastomers and their process of preparation. The invention also concerns new recyclable cross-linked diene elastomers, their preparation process and their uses.In 2015, the total rubber production was over 26 millions of tons. Natural and synthetic rubbers like polyisoprene, polyethylene/propylene/diene (EPDM) or polybutadiene (PB) are widely used in many areas like automotive, sport equipment, building materials or tires. Their elasticity, strength, high moduli or solvent resistance are the main properties expected for these materials. To reach these properties, the rubber has to be chemically cross- ...

LATEX FORMULATION FOR MAKING ELASTOMERIC PRODUCTS

A latex formulation for making elastomeric product, more particularly an elastomeric glove comprising a mixture of at least one base polymer, a cross-linker; and a pH adjustor, where the pH adjustor providing a pH range of 9.5 to 10.5. Still further, the present invention discloses a method for preparing a latex formulation for making elastomeric product, more particularly an elastomeric glove without using accelerators, zinc oxide and sulphur, which comprises the steps of mixing a base polymer with a pH adjuster, stirring the mixture for time period ranging from 20 minutes to 30 minutes, adding a cross-linker to the mixture, stirring said mixture for an hour, optionally adding at least one or more additive to said mixture, adding water to said mixture to achieve a total solid content (TSC) ranging in between 13% to 30% by w/w, allowing said mixture to mature. 1) A latex formulation for making elastomeric product comprising a mixture of:a) at least one base polymer; andb) a cross-linker; with a pH adjustor to provide a pH range of 9.5 to 10.5; a) trivalent metal or trivalent metal-based compound;', 'b) polyethylene glycol, wherein the polyethylene glycol have molecular weight ranging in between 200 Da to 200 000 Da ; and', 'c) hydroxide salt, wherein the hydroxide salt is selected from the group consisting of potassium hydroxide, sodium hydroxide, ammonium hydroxide or mixtures thereof., 'wherein in that the cross-linker is an admixture of2) The latex formulation as claimed in wherein the elastomeric product is an elastomeric glove.3) The latex formulation as claimed in wherein the base polymer is synthetic latex.4) The latex formulation as claimed in wherein the synthetic latex is selected from the group consisting of carboxylated acrylonitrile claim 3 , butadiene claim 3 , neoprene claim 3 , isoprene or mixtures thereof.5) The latex formulation as claimed in wherein the synthetic latex is carboxylated acrylonitrile.6) The latex formulation as claimed in wherein ...

NITRILE GROUP-CONTAINING COPOLYMER RUBBER

A nitrile group-containing copolymer rubber including 10 to 60 wt % of an α,β-ethylenically unsaturated nitrile monomer unit and 1 to 60 wt % of an α,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit, and having an iodine value of 120 or less, wherein a processability index Ipro (Ipro=CC×SA) is 0.0030 or less, where the processability index Ipro is the product of the carboxyl group content CC, which is the number of moles of carboxyl groups per 100 g of nitrile group-containing copolymer rubber, and the absorbance area SA of a carboxylic anhydride group determined by infrared spectroscopy. 1. A nitrile group-containing copolymer rubber comprising 10 to 60 wt % of an α ,β-ethylenically unsaturated nitrile monomer unit and 1 to 60 wt % of an α ,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit , and having an iodine value of 120 or less ,{'sub': pro', 'pro', 'C', 'A', 'pro', 'C', 'A, 'wherein a processability index I(I=C×S) is 0.0030 or less, where the processability index Iis the product of the carboxyl group content C, which is the number of moles of carboxyl groups per 100 g of nitrile group-containing copolymer rubber, and the absorbance area Sof a carboxylic anhydride group determined by infrared spectroscopy.'}2. The nitrile group-containing copolymer rubber according to claim 1 , wherein a conjugated diene monomer unit is contained in an amount of 20 to 89 wt %.3. The nitrile group-containing copolymer rubber according to claim 1 , wherein a content of the α claim 1 ,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit is 1 to 10 wt %.4. The nitrile group-containing copolymer rubber according to claim 1 , wherein the α claim 1 ,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit is at least one selected from the group consisting of a mono-n-butyl maleate unit claim 1 , a mono-n-butyl fumarate unit claim 1 , and a monocyclohexyl fumarate unit.5. A cross-linkable rubber composition comprising ...

BINARY PROCESS FOR MANUFACTURE OF DIPPED LATEX PRODUCTS

A binary process for manufacturing dipped latex product. The binary process disclosed herein eliminates the influence of any level of pre-vulcanization on the outcome of the dipping process whether using natural or synthetic latex. The binary process includes preparing a first latex mixture Formulation A including latex, one or accelerators, and one or more surfactants, and preparing a second latex mixture Formulation B including latex, one or more curing agents, and one or more surfactants. Further, dipping one or more formers into the Formulation A and B separately in order to form a plurality of coatings/layers of the Formulation A and B, and later on curing the plurality of coatings/layers on the formers to form the dipped latex products, which can be a condom, glove, balloon, catheter, finger cot, surgical tubing, baby bottle nipple or dental dam. 112-. (canceled)13. A binary process for manufacturing dipped latex product , the said process comprising:preparing a first latex mixture Formulation A comprising latex, one or accelerators, and one or more surfactants;preparing a second latex mixture Formulation B comprising latex, one or more curing agents, and one or more surfactants;dipping one or more formers into the Formulation A and B separately in order to form a plurality of coatings/layers of the Formulation A and B; andcuring the plurality of coatings/layers on the formers to form the dipped latex products.14. The binary process as claimed in claim 13 , wherein the latex used for preparing the Formulation A is natural latex claim 13 , synthetic latex or combinations thereof.15. The binary process as claimed in claim 13 , wherein the latex used for preparing the Formulation B is natural latex claim 13 , synthetic latex or combinations thereof.16. The binary process as claimed in claim 13 , wherein the one or more accelerators are selected from the group consisting zinc di-butyl dithiocarbamate claim 13 , zinc diethyl dithiocarbamate claim 13 , sodium ...

VULCANIZATION COMPOSITION HAVING REDUCED ALLERGENIC POTENTIAL, AND ELASTOMERIC ARTICLES FORMED THEREWITH

The present invention generally relates to vulcanization compositions used to vulcanize elastomeric articles, where the vulcanization compositions have reduced allergenic potential as compared to elastomeric articles formed using vulcanization compositions having non-fugitive accelerators. The present invention also relates to elastomeric articles formed using the vulcanization compositions. The invention further relates to methods for making a reduced-allergenicity vulcanization composition, and to methods for using the vulcanization compositions to vulcanize elastomeric articles. 1. A vulcanization composition comprising:a source of sulfur,a single fugitive xanthate accelerator, anda metal oxide,where the composition does not include any additional compounds that function as accelerators for vulcanizing elastomers.2. A vulcanization composition comprising:elemental sulfur,diisopropyl xanthogen polysulfide as the sole fugitive accelerator, anda metal oxide,where the composition does not include any additional compounds that function as accelerators for vulcanizing elastomers.3. A vulcanization composition consisting of:elemental sulfur,diisopropyl xanthogen polysulfide, anda metal oxide.4. The vulcanization composition of one of - , wherein the vulcanization composition exhibits reduced allergenicity as compared to conventional vulcanization compositions.5. The vulcanization composition of one of - , wherein the metal oxide is selected from the group consisting of zinc oxide , magnesium oxide , lead oxide , and combinations thereof.6. The vulcanization composition of claim 1 , wherein the source of sulfur is selected from the group consisting of elemental sulfur and sulfur donors that have a low allergenic potential claim 1 , and combinations thereof.7. The vulcanization composition of claim 1 , wherein the single fugitive xanthate accelerator is selected from the group consisting of diisopropyl xanthogen polysulfide claim 1 , dibutyl xanthogen disulfide claim 1 , ...

ELASTOMERIC FILM-FORMING COMPOSITIONS AND ARTICLES MADE FROM THE ELASTOMERIC FILM

The invention relates to an elastomeric film-forming composition comprising a carboxylic acid- or ester-grafted polychlorobutadiene, and one or more cross-linking agents. The invention also relates to dipped articles, gloves, methods of manufacture and uses involving the composition. 1. An elastomeric film-forming composition comprising:(a) a polymer component comprising a carboxylic acid- or ester-grafted polychlorobutadiene, and(b) one or more cross-linking agents,wherein the carboxylic acid or ester-grafted polychlorobutadiene contains carboxylic acid or ester grafting in an amount of from 0.01% to 8% by weight of chlorobutadiene units present in the carboxylic acid or ester-grafted polychlorobutadiene.2. The composition of claim 1 , wherein the polychlorobutadiene is selected from the group consisting of a polymer of 2-chloro-1 claim 1 ,3-butadiene claim 1 , a polymer of 2 claim 1 ,3-dichloro-1 claim 1 ,3-butadiene and copolymers comprising 2-chloro-1 claim 1 ,3-butadiene and 2 claim 1 ,3-dichloro-1 claim 1 ,3-butadiene.3. The composition of claim 1 , wherein the carboxylic acid or ester-grafted polychlorobutadiene comprises from 10 to 60% chlorine by weight of the chlorobutadiene units present in the carboxylic acid or ester-grafted polychlorobutadiene.4. The composition of claim 1 , wherein a concentration of total solids in the composition is between 5-60% by weight of the composition.5. The composition of claim 1 , wherein the cross-linking agent is selected from the group consisting of carbamates claim 1 , thiocarbamates claim 1 , thiurams claim 1 , thiourea claim 1 , thiazoles claim 1 , guanidines claim 1 , aldehyde/amine-based accelerators claim 1 , ionic cross-linking agents claim 1 , organic and inorganic metal oxides claim 1 , organic and inorganic metal hydroxides claim 1 , organic and inorganic peroxides claim 1 , covalent cross-linking agents claim 1 , sulphur claim 1 , crosslinking monomers claim 1 , reactive oligomers claim 1 , polyisocyanate ...

MOLDED ARTICLE AND METHOD FOR PRODUCING SAME

A molded article including a repeatedly-movable part that and a method for producing a molded article are disclosed. The molded article includes a repeatedly-movable part capable of being repeatedly bent or curved, and the repeatedly-movable part is made of a thermoplastic resin composition containing a polyolefin resin, a polyamide resin, and a modified elastomer having a reactive group that reacts with the polyamide resin. The method is a method for producing a molded article including a repeatedly-movable part capable of being repeatedly bent or curved, the method including using, as a molding material for the repeatedly-movable part, a thermoplastic resin composition containing a polyolefin resin, a polyamide resin, and a modified elastomer having a reactive group that reacts with the polyamide resin. 1. A molded article comprising a repeatedly-movable part capable of being repeatedly bent or curved , whereinthe repeatedly-movable part is made of a thermoplastic resin composition containing a polyolefin resin, a polyamide resin, and a modified elastomer having a reactive group that reacts with the polyamide resin.2. The molded article according to claim 1 , wherein the repeatedly-movable part is integrally molded with another part.3. The molded article according to claim 1 , wherein the repeatedly-movable part is a hinge part claim 1 , a bellows part claim 1 , or a leaf spring.4. The molded article according to claim 1 , wherein the polyamide resin has a structure in which a hydrocarbon group between adjacent amide bonds in a main chain has a linear chain of 6 or more carbon atoms.5. The molded article according to claim 1 , wherein the modified elastomer is an olefin-based thermoplastic elastomer having claim 1 , as a skeleton claim 1 , a copolymer of ethylene or propylene and an α-olefin having 3 to 8 carbon atoms or a styrene-based thermoplastic elastomer having a styrene skeleton.6. The molded article according to claim 1 , further comprising:a continuous ...

Production of shaped articles

Disclosed are electrically conducting shaped articles and also a process for producing same from granular and/or fibrous substrates.

ELASTOMERIC ARTICLES, COMPOSITIONS, AND METHODS FOR THEIR PRODUCTION

This application relates to synthetic elastomeric articles, such as gloves, comprising the cured product of a synthetic latex composition, the synthetic latex composition comprising a synthetic carboxylated polymer and a cross-linking composition, the cross-linking composition comprising an aqueous solution of a negatively charged multivalent metal complex ion having a pH of at least 9.0. Also described are compositions for forming the articles, and methods for making the articles, based on the use of the described cross-linking composition. The articles, compositions and methods contain an aqueous solution of a multimetal oxide of the multivalent metal, a hydroxide of the multivalent metal, or a salt of the multivalent metal, such as sodium aluminate, in an amount of less than 0.3 phr. The articles produced have a thickness of between 0.01-3 mm and an unaged tensile strength of at least 15 MPa. 1. A synthetic elastomeric article comprising the cured product of a synthetic latex composition , the synthetic latex composition comprising a synthetic carboxylated polymer and a cross-linking composition , the cross-linking composition comprising an aqueous solution of a multimetal oxide of a multivalent metal , a hydroxide of a multivalent metal , or a salt of a multivalent metal , producing an aqueous solution of negatively charged multivalent metal complex ion having a pH of at least 9.0 , in which the amount of the multimetal oxide of the multivalent metal , the hydroxide of the multivalent metal , or the salt of the multivalent metal is less than 0.3 phr , said article having a thickness of 0.01-3 mm and an unaged tensile strength of at least 15 MPa.2. The synthetic elastomeric article of claim 1 , wherein the cross-linking composition comprises 0.01-5.0 phr alkali.3. The synthetic elastomeric article of claim 1 , having a modulus at 500% of less than 7.0 MPa.4. The synthetic elastomeric article of claim 1 , wherein the article is a glove.5. The synthetic elastomeric ...

CROSS-LINKED RUBBER

A cross-linked rubber obtained by cross-linking a nitrile rubber composition, wherein the nitrile rubber composition contains a carboxyl group-containing nitrile rubber (a) with an iodine value of 120 or less and a diurethane compound (b) represented by a following general formula (1), a content of the diurethane compound (b) in the nitrile rubber composition is 5 to 15 parts by weight with respect to 100 parts by weight of the carboxyl group-containing nitrile rubber (a), and a tensile strength of the cross-linked rubber based on JIS K6251 is 15 MPa or more and an elongation at break of the cross-linked rubber based on JIS K6251 is 300% or more, is provided. 4. The cross-linked rubber according to claim 1 , wherein the carboxyl group-containing nitrile rubber (a) contains 10 to 60 wt % of α claim 1 ,β-ethylenically unsaturated nitrile monomer units claim 1 , 0.1 to 20 wt % of carboxyl group-containing monomer units claim 1 , and 20 to 89.9 wt % of conjugated diene monomer units (including also hydrogenated parts).5. The cross-linked rubber according to claim 4 , wherein the carboxyl group-containing monomer units are α claim 4 ,β-ethylenically unsaturated dicarboxylic acid monoester monomer units.6. The cross-linked rubber according to claim 1 , wherein a content of the carboxyl group in the carboxyl group-containing nitrile rubber (a) is 5×10to 5×10ephr.7. The cross-linked rubber according to claim 1 , wherein a content of the diurethane compound (b) in the nitrile rubber composition is 6.0 to 12 parts by weight with respect to 100 parts by weight of the carboxyl group-containing nitrile rubber (a).8. The cross-linked rubber according to claim 1 , wherein the nitrile rubber composition further contains a basic cross-linking accelerator (c).9. A hose comprising a cross-linked rubber according to . The present invention relates to a cross-linked rubber excellent in constant-elongation fatigue resistance and compression set resistance.Since the past, a nitrile rubber ...

PROCESS FOR PREPARING CURED POLYMERS

The present invention relates to curing of polymers, particularly to self curing of polymers. The present invention provides a process for curing of copolymers of isoolefins and olefinic monomers. The process includes the step of reacting the copolymer with an azidation reagent to form an azidated copolymer and then heating the azidated copolymer at a suitable temperature to cure the polymer. 1. A process for preparing a cured elastomer comprising the steps of:reacting a copolymer comprising repeating units derived from at least one isoolefin monomer and repeating units derived from at least one olefinic monomer with an azidation reagent to form an azidated copolymer; andheating the azidated copolymer at a suitable temperature;wherein the azidated copolymer has one or more of the repeating units having one or more azide groups attached through a C—N bond.2. The process according to claim 1 , wherein the azidated copolymer is heated at a temperature of from about 100° C. to about 250° C.3. The process according to claim 1 , wherein the azidated copolymer is heated at a temperature of from about 130° C. to about 220° C.4. The process according to claim 1 , wherein the azidated copolymer is heated at a temperature of from about 160° C. to about 200° C.5. The process according to or claim 1 , wherein the process is carried out in the absence of curatives.6. The process according to claim 1 , wherein the azidation reagent is an azide salt claim 1 , a covalent azide compound claim 1 , or mixtures thereof.7. The process according to claim 6 , wherein the azide salt is NaN claim 6 , KN claim 6 , NHNor TBAN.8. The process according to claim 6 , wherein the covalent azide compound is halogen azide claim 6 , MeSiNor HN9. The process of any one of to claim 6 , wherein said process comprises the step of functionalizing said copolymer with a leaving group or an oxygen containing functional group prior to reacting with said azidation reagent.10. The process according to claim 9 , ...

Mixed Ionic Electronic Conductors for Improved Charge Transport in Electrotherapeutic Devices

This invention addresses the need for efficient dry skin electrodes. Robust, flexible Mixed Ionic Electronic Conductor (MIEC) electrodes were prepared by an aqueous solution route resulting in electrically conductive networks of carbon nanotubes (CNTs) and ionically conductive elastic matrix. The flexible electrode was characterized in terms of conductivity, ionic charge transfer resistance, and water uptake. The flexible electrode maintained low resistance even after multiple cycles of 50% extension and contraction. 1. An electrode , comprising:coalesced elastomer particles, CNTs, and a glycosaminoglycan;wherein the CNTs and glycosaminoglycan are disposed on the exterior of the coalesced elastomer particles.2. (canceled)3. The electrode of comprising 0.4 to 4 wt %.4. The electrode of comprising 10 to 60 wt % water claim 1 , preferably 20 to 50 wt % claim 1 , in some embodiments 30 to 50 wt % water.5. The electrode of comprising a mass ratio of glycosaminoglycan to CNT in the range of 0.5 to 5 claim 1 , preferably 1 to 3 claim 1 , and in some embodiments 1.5 to 2.5.6. (canceled)7. The electrode of wherein the electrode has a thickness and two major surfaces; and wherein at least 30 wt % of the CNTs are disposed on a major surface or within the 10% of the thickness near a major surface.8. An electrode claim 1 , comprising:elastomer, CNTs, and a glycosaminoglycan;and characterizable by:a conductivity of at least 1000 mS/cm that changes by less than 10% after 5 strain cycles of extending the material by 50% and allowing to contract.9. The electrode of comprising a conductivity of at least 1000 mS/cm to about 3000 mS/cm that changes by less than 10% after 5 strain cycles of extending the material by 50% and allowing to contract.10. The electrode of wherein the ratio of partial conductivity of a charge carrier to the total conductivity claim 8 , transference number claim 8 , tof the electrode is at least 0.10 claim 8 , preferably at least 0.13 claim 8 , in some ...

VULCANIZATION SYSTEMS FOR CURING BLOCK COPOLYMER LATEX FILMS

A method for the curing of aqueous latexes comprising block copolymers is disclosed. The block copolymers have the general formula A-B-A or A-B-Y-(B-A). The curing is conducted using vulcanization systems that are free of guanidine and thiuram compounds. The cured latexes are useful in the manufacture of elastic films, surgical, examination and electrical insulation gloves, industrial gloves and condoms. 1. A method for curing a latex comprising water , a block copolymer , and a guanidine-free and thiuram-free vulcanization system such method comprising:a. forming a solid film from the latex,b. curing the film by heating to a temperature from 100° C. to less than 130° C.2. The method of claim 1 , where in the block copolymer comprises at least one mono-alkenyl arene block (A) and at least one conjugated diene block (B).3. The method of claim 2 , wherein the mono-alkenyl arene is styrene.4. The method of claim 2 , wherein the mono-alkenyl arene constitutes 8 to 15 wt. % of the total block copolymer.5. The method of claim 2 , wherein the conjugated diene is isoprene claim 2 , butadiene claim 2 , or mixtures thereof.6. The method of claim 5 , wherein the conjugated diene is isoprene.8. The method of claim 2 , wherein the molecular weight of the A block is from 9 claim 2 ,000 to 15 claim 2 ,000.9. The method of claim 2 , wherein the molecular weight of the B block is from 75 claim 2 ,000 to 150 claim 2 ,000.10. The method of claim 7 , wherein the coupling efficiency is at least 90%.11. The method of claim 7 , wherein the coupling agent is γ-glycidoxy-propyl-trimethoxy-silane.12. The method of claim 1 , wherein the vulcanization system comprises sulfur claim 1 , zinc-diethyldithio-carbamate claim 1 , and zinc-2-mercapto-benzo-thiazole.13. The method of claim 1 , wherein the curing temperature is from 110 to 125° C.14. The method of claim 1 , further comprising the step of increasing the pH of the latex to 10 or greater by addition of an aqueous base before curing the ...

METHOD FOR THE PRODUCTION OF SUPERABSORBERS

A process for producing superabsorbents, comprising the steps of i) classifying the superabsorbent particles by means of one or more sieves and ii) removing metallic impurities by means of one or more magnetic separators, wherein classification is accomplished using sieves made of a wire mesh, the wires of the wire mesh consist of a steel composed of at least 70% by weight of iron, at least 10% by weight of chromium and less than 2.5% by weight of nickel, and the throughput of superabsorbent particles in the magnetic separator is in the range from 2.0 to 6.5 g/s per cmof free cross-sectional area. 1. A process for producing superabsorbent particles by polymerizing a monomer solution or suspension comprisinga) at least one ethylenically unsaturated monomer which bears an acid group and optionally is at least partly neutralized,b) at least one crosslinker,c) at least one initiator,d) optionally one or more ethylenically unsaturated monomer copolymerizable with the monomer mentioned under a) ande) optionally one or more water-soluble polymer, comprisingi) classifying the superabsorbent particles by one or more sieves, andii) removing metallic impurities by one or more magnetic separators,{'sup': '2', 'wherein step i) is conducted before step ii), which comprises classifying using sieves made of a wire mesh, wherein the wires of the wire mesh consist of a steel composed of at least 70% by weight of iron, at least 10% by weight of chromium, and less than 2.5% by weight of nickel, and throughput of superabsorbent particles in the magnetic separator is in the range from 2.0 to 6.5 g/s per cmof free cross-sectional area.'}2. The process according to claim 1 , wherein the wires of the wire mesh consist of a steel composed of at least 75% by weight of iron claim 1 , at least 12% by weight of chromium claim 1 , and less than 1.0% by weight of nickel.3. The process according to claim 1 , wherein the wires of the wire mesh consist of a steel composed of at least 78% by weight of ...

HOLDING MATERIAL FOR POLLUTION CONTROL ELEMENT, PRODUCTION METHOD THEREOF, AND POLLUTION CONTROL APPARATUS

A holding material for a pollution control element which can sufficiently suppress scattering of inorganic fibers when the pollution control element is assembled in a casing, and which has a sufficiently high coefficient of friction. The holding material includes: a sheet-like main body made of first inorganic fibers having a minor axis in the range of from about 3 to 10 μm; and a surface layer which is provided on at least one surface of the main body and contains second inorganic fibers having a minor axis in the range of from about 1 to 15 nm. 1. A holding material comprising:a sheet-like main body made of first inorganic fibers having a minor axis in the range of from about 3 to 10 μm; anda surface layer which is provided on at least one surface of the main body and contains second inorganic fibers having a minor axis in the range of from about 1 to 15 nm.2. The holding material according to claim 1 , wherein an aspect ratio of the second inorganic fibers is in the range of from about 60 to 2 claim 1 ,000.3. The holding material according to claim 1 , wherein a material of the second inorganic fibers is alumina.4. The holding material according to claim 1 , wherein the surface layer further contains first inorganic fine particles or third inorganic fibers having a smaller aspect ratio than the aspect ratio of the second inorganic fibers.5. The holding material according to claim 4 , wherein an average particle size of the first inorganic fine particles is not greater than 1 μm.6. The holding material according to claim 4 , wherein a material of the first inorganic fine particles is alumina.7. The holding material according to claim 4 , wherein a ratio (W/(W+W)) of a mass (W) of the first inorganic fine particles to a total mass (W+W) of the second inorganic fibers and the first inorganic fine particles is in the range of from about 0.1 to 0.9.8. The holding material according to further comprising:second inorganic fine particles dispersed inside the main body; ...

Composition Including Multiple Terminally Functionalized Polymers

Vulcanizates with desirable properties such as reduced hysteresis and improved wear resistance can be obtained from a composition that includes particulate filler(s) and at least two types of terminally functionalized polymers. One type of polymer has a heterocyclic moiety at a terminus, while another type has at one of its termini an aryl group that includes at least two hydroxyl substituents. The functionalized polymers are provided by reacting terminally active polymers with, respectively, a heterocyclic nitrile and a compound that includes an aryl group having at least two directly bonded OGsubstituents, where Gis a protecting group, and a substituent that can react with the active terminus. The protecting groups can be removed so as to provide a terminal moiety that includes an aryl group having at least two directly bonded hydroxyl groups. 1. A process for providing terminally functionalized polymers , said process comprising: 1) ethylenically unsaturated monomers that comprise at least one type of polyene, and', '2) a catalyst composition;, 'a) providing a solution that comprises'}b) permitting said catalyst composition to polymerize at least a portion of said ethylenically unsaturated monomers so as to provide polymers having active termini; and 1) a heterocyclic nitrile and permitting said heterocyclic nitrile to functionalize the termini of some of said polymers, and', {'sub': p', 'p, '2) an aryl compound that comprises (1) at least two directly bonded OGsubstituents, where Gis a protecting group, and (2) a substituent that can react with an active polymer terminus, and permitting said aryl compound to functionalize the termini of some of said polymers,'}], 'c) introducing at least a portion of said polymers to'}thereby providing said terminally functionalized polymers.2. The process of wherein one of said heterocyclic nitrile and said aryl compound is introduced to said polymers after the other of said heterocyclic nitrile and said aryl compound has ...

Shock resistant poly(meth)acrylate moulding compound with high heat resistance

FIELD: chemistry. SUBSTANCE: invention relates to polymer mixtures for making shock resistant moulded articles. The disclosed polymer mixture for making moulded articles which contains (meth)acrylate (co)polymer components with different molecular weight and viscosity of solution in chloroform, and an impact viscosity modifier based on cross-linked poly(meth)acrylates, having a nucleus/shell/shell structure, whereby the test sample made from the polymer mixture simultaneously possess the following characteristics: Young's modulus of elasticity (ISO 527) of at least 2500 MPa, Vicat softening point VET (ISO 306-B50) of at least 110°C, impact viscosity (ISO 179-2D, perpendicular the layers) of at least 30 kJ/m 2 , flow melt index MVR (ISO 1133, 230°C/3.8 kg) of at least 1.0 cm 3 /10 min. The invention also discloses articles injection moulded from the said polymer mixture, use of the polymer mixture to obtain moulded articles and versions of using the obtained moulded articles. EFFECT: design of thermoplastic material with a balanced profile of characteristics. 14 cl, 1 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 397 998 (13) C2 (51) МПК C08L 33/10 (2006.01) C08F 265/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007131956/04, 15.12.2005 (24) Дата начала отсчета срока действия патента: 15.12.2005 (43) Дата публикации заявки: 27.02.2009 (56) Список документов, цитированных в отчете о поиске: WO 2004056892 А2, 08.07.2004. RU 2054009 C1, 10.02.1996. RU 2128671 C1, 10.04.1999. (73) Патентообладатель(и): Эвоник Рём ГмбХ (DE) (85) Дата перевода заявки PCT на национальную фазу: 24.08.2007 2 3 9 7 9 9 8 R U (87) Публикация PCT: WO 2006/079394 (03.08.2006) C 2 C 2 (86) Заявка PCT: EP 2005/013514 (15.12.2005) Адрес для переписки: 101000, Москва, М.Златоустинский пер., 10, кв.15, "ЕВРОМАРКПАТ", пат.пов. И.А.Веселицкой (54) УДАРОПРОЧНАЯ ПОЛИ(МЕТ)АКРИЛАТНАЯ ФОРМОВОЧНАЯ МАССА ...

High rigid carbon fiber and manufacturing method of carbon-carbon composite for friction material using same

본 발명은 고강성 탄소섬유 및 이를 이용한 마찰재용 탄소-탄소 복합재 제조 방법에 관한 것으로, 특히 탄소섬유에 일정농도의 붕산용액을 함침하고, 이 붕산용액이 함침된 탄소섬유를 열풍건조기에서 적당한 온도로 일정시간동안 건조시킨 후, 상기 건조된 탄소섬유를 열처리로에 넣고 일정온도로 열처리하여 고강성 저강도 탄소섬유를 제조하고, 이 탄소섬유를 일정한 길이로 절단하여 핏치와 함께 혼합하고, 이 혼합체를 탄소직물과 적층하여 프리폼을 만든 후, 이 프리폼을 몰드에 장입하고 나서 프레스로 가압성형하여 그린바디를 제조한 다음, 이 그린바디를 고온에서 열처리한 후 핏치로 함침시킴과 아울러 탄화공정 및 열처리공정을 거쳐 마찰재용 탄소-탄소 복합제를 제조한다. The present invention relates to a high rigid carbon fiber and a method for producing a carbon-carbon composite for friction materials using the same, in particular, impregnated carbon fiber with a certain concentration of boric acid solution, the carbon fiber impregnated with the boric acid solution at a suitable temperature in a hot air dryer After drying for a certain time, the dried carbon fiber is placed in a heat treatment furnace and heat-treated at a constant temperature to produce a high-strength low-strength carbon fiber, the carbon fiber is cut to a predetermined length and mixed with a pitch, and the mixture is mixed After laminating with a carbon fabric to form a preform, the preform is charged into a mold and press-molded into a press to produce a green body. The green body is heat-treated at high temperature, impregnated with a pitch, and carbonized and heat-treated. To prepare a carbon-carbon composite for friction materials. 이와 같은 방법으로 제조된 마찰재는 종래 고온에서 열처리하여 제조된 탄소 섬유를 이용하여 만든 마찰재보다 마모량이 적은 등 내마모성이 우수하면서도 제조 경비를 줄일 수 있다. The friction material produced in this manner is less wear than the friction material made by using a carbon fiber manufactured by heat treatment at a high temperature, such as excellent wear resistance and can reduce the manufacturing cost.

Modified rubber, process for producing the same, and composition

분자당 두 개 이상의 에폭시기를 갖는 화합물로써 변성되고, 특정 구조를 갖는 변성 고무; 및 용액 중합 방법에 의해 개시제로서 유기리튬을 사용하여 비닐방향족 탄화수소 및 공액 디엔을 공중합시키는 것 및 생성 공중합체를 분자당 두 개 이상의 에폭시기를 갖는 화합물로써 변성시키는 것을 포함하는 변성 고무의 제조 방법. 또한 변성 고무를 함유한 원고무 및 거기에 함께 혼합된 실리카를 함유하는 변성 고무 조성물; 및 양자 모두 상기 변성 고무 조성물로부터 수득된 방진 고무 및 신발이 제공된다. Modified rubbers modified with compounds having two or more epoxy groups per molecule and having a specific structure; And copolymerizing a vinylaromatic hydrocarbon and a conjugated diene using organolithium as an initiator by a solution polymerization method, and modifying the resulting copolymer with a compound having two or more epoxy groups per molecule. Furthermore, the modified rubber composition containing the original rubber containing the modified rubber and silica mixed together therewith; And both anti-vibration rubber and shoes obtained from the modified rubber composition.

Impact-resistant polymethacrylate moulding masses with high thermal stability

본 발명은 청구항 1에 따른 (메트)아크릴레이트 (공)중합체 성분 (a), (b), 및 (c) 및/또는 (d)로부터 제조된 중합체 혼합물에 관한 것이며, 이 중합체 혼합물로부터 제조된 시험편은 2,500 MPa 이상의 인장 모듈러스 (ISO 527), 110℃ 이상의 비캣(Vicat) 연화점 (VSP, ISO 306-B50), 30 kJ/m 2 이상의 내충격성(ISO 179-2D, 평면 방향) 및 1.0 cm 3 /10분 이상의 용융 지수(MVR, ISO 1133, 230℃/3.8kg)의 특성을 갖는다. 본 발명은 또한 사출 성형물 및 사출 성형물을 제조하기 위한 중합체 혼합물의 용도에 관한 것이다. The present invention relates to a polymer mixture prepared from (meth) acrylate (co) polymer components (a), (b) and (c) and / or (d) according to claim 1, Test specimens have a tensile modulus of at least 2,500 MPa (ISO 527), a Vicat softening point (VSP, ISO 306-B50) at 110 ° C. or higher, impact resistance of at least 30 kJ / m 2 (ISO 179-2D, planar orientation) and 1.0 cm 3 Melt index (MVR, ISO 1133, 230 ° C./3.8 kg) of at least 10 minutes. The present invention also relates to the use of injection moldings and polymer mixtures for the production of injection moldings. 사출 성형물, 내충격성, 폴리(메트)아크릴레이트, 메틸 메타크릴레이트, 스티렌, 말레산 무수물 Injection molding, impact resistance, poly (meth) acrylate, methyl methacrylate, styrene, maleic anhydride

Impact resistant poly(meth)acrylate moulding composition with high heat resistance

PAINTED PRIMER COMPOSITION

1. Дисперсия, включающая в себя термопластический целлюлозный полимер или его производное, фталатный сложный эфир C-C-алкилированного ароматического спирта, соль щелочно-земельного металла жирной C-C-алифатической кислоты, ПАВ и дополнительно включающая в себя один или более компонентов, выбранных из следующих:карбонат металла,белый оксид металла,растворитель,антикоррозийная присадка иполимерный низший алкилметакрилат.2. Дисперсия по п.1, включающая в себя полимерный низший алкилметакрилат.3. Дисперсия по п.2, где полимерный низший алкилметакрилат является полимерным этилметакрилатом.4. Дисперсия по п.1, включающая в себя карбонат металла, белый оксид металла, полимерный низший алкилметакрилат и растворитель.5. Дисперсия по п.1, включающая в себя карбонат металла, белый оксид металла, полимерный низший алкилметакрилат, растворитель и антикоррозийную присадку.6. Дисперсия по п.1 в твердой форме.7. Дисперсия по п.4 в твердой форме.8. Дисперсия по п.5 в твердой форме.9. Дисперсия по п.6 в гранулированной форме.10. Дисперсия по п.7 в гранулированной форме.11. Дисперсия по п.8 в гранулированной форме.12. Грунтовочная композиция, включающая в себя дисперсию по п.1 и растворитель для грунтования.13. Грунтовочная композиция по п.12, дополнительно включающая в себя один или более компонентов, выбранных из следующих: C-C-кетон, сложный C-C-эфир, полимерный пластификатор и галогенированный полиолефин.14. Грунтовочная композиция по п.13, дополнительно включающая в себя один или более компонентов, выбранных из следующих: спирт, производное силиката полигидроксимагния и порошок диоксида кремния.15. Грунтовочная композиция, включающая в себя раст� ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2006 134 651 (13) A (51) ÌÏÊ C08L 1/08 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2006134651/04, 02.03.2005 (71) Çà âèòåëü(è): ÏÎËÈ ÊÎÓÒ ÏÒÈ ËÒÄ. (AU) (30) Êîíâåíöèîííûé ïðèîðèòåò: 02.03.2004 AU 2004901038 (43) ...

Thin-walled natural rubber latex material substantially free of sulfur and nitrosamines, and method of making same

A thin walled rubber latex material is disclosed suitable for forming gloves, and the like. A thin walled material is formed using sulfur-free, oxygen-donating curing agents such as butyl peroxides, alkyl peroxides and peroxyesters so that the material is not chemically reactive with other substances that may be contacted by the material during subsequent use of same. The material is also formed using non-amine antioxidants so that it is substantially free of nitrosamines, and the material is also provided with a heat resistant and water resistant coating which blocks transfer of latex proteins from the material to persons who contact the materials over prolonged periods of time.

Thin-walled natural rubber latex material substantially free of sulfur and nitrosamines

A thin walled natural rubber latex material is disclosed suitable for forming thin walled products including gloves, dental dams and shields, catheter tubing, penrose surgical drains, finger cots, coverings for body parts, and the like. The thin walled material is formed from a latex emulsion containing natural rubber, sulphur-free, oxygen-donating curing agents, and a strength enhancing agent which may be an inorganic substance such as fumed silica and/or an organic substance such as monomers and polymers of families of acrylics and esters. The emulsion also preferably includes microcrystaline wax as an oxygen barrier, and the material is also provided with a heat resistant and water resistant coating which blocks transfer of latex proteins from the material and enhances slip of the material.

VULCANIZATION OF DUSKED RUBBER MATERIALS BY MEANS OF A MELTING BELT

Glove

Glove made of a covalently cross-linked elastomer film, where at least a filler is contained in the elastomer film, and the filler is a silicate layer, is claimed. An independent claim is included for making the glove, comprising dipping a glove-form in an immersion bath, in which a latex containing the filler is provided, where the filler is transferred in an aqueous dispersion before the addition to the latex.

Production of rubber articles

A binary process for manufacture of dipped latex products

本发明提供了一种用于制备浸渍胶乳制品的二元工艺。本发明所公开的二元工艺消除了任何级别的预硫化对浸渍工艺结果的影响，不管是使用天然的还是合成的胶乳。二元工艺包括制备第一胶乳混合物配方A，包含胶乳、一种或多种促进剂、以及一种或多种表面活性剂；制备第二胶乳混合物配方B，包含胶乳、一种或多种硫化剂、以及一种或多种表面活性剂；进一步地，一个或多个模具分别浸入到配方A和配方B中，以形成配方A和配方B的多层包衣/涂层；后来硫化模具上的多层包衣/涂层以形成所述浸渍胶乳制品，它可以是避孕套、手套、气球、导管、手指套、外科手术管、婴儿奶瓶奶嘴或牙科坝。

Dipped article on the base of natural rubber and method for its production

Использование: медицинские изделия, профилактические кондомы, медицинские и хирургические перчатки, а также другие пленочные латексные изделия. Сущность изобретения: изготавливают изделие на основе латекса натурального каучука NR методом макания. Композиция включает также латекс бутадиен-стирольного сополимера с содержанием звеньев стирола более 50 мас.% (возможно 75 - 85 мас.%). Количество латекса сополимера SBR 1 - 25 мас. ч. на 100 мас. ч. твердого вещества NR. Возможно 10 - 20 мас. ч. SBR на 100 мас. ч. NR. Изготавливают изделие погружением формы в коагулянт, затем в композицию на основе NR с добавлением SBR до получения непрерывной пленки на форме. Затем проводят сушку, вулканизацию при 100 o С 35 мин. Характеристика изделий: прочность на разрыв изделия из композиции на основе NR с добавлением 10% SB/100 мас. ч. NR 976 Н/см, удлинение при разрыве 871%. 2 с. и 6 з. п. ф-лы, 10 табл. с00190Сс ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ” 2061 002 ' 13) СЛ 5 МК” С 08 4 5/02//С 08 4 5/02, С 08 Г 7:02, 9:08 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4742945/04, 10.01.1990 (30) Приоритет: 11.01.1989 Ц$ 295679 (46) Дата публикации: 27.05.1996 (56) Ссылки: Патент США М 3286011, кл.264-306, опублик. 1966. (71) Заявитель: Орто Фармасьютикал (Канада) Лтд. (СА) (72) Изобретатель: Роберт Дж.Миллер[СА], Дункан Александр МакКиллоп[СА], Оскар Теодор Танкович[АТ] (73) Патентообладатель: Орто Фармасьютикал (Канада) Лтд. (СА) (54) МАКАНОЕ ИЗДЕЛИЕ НА ОСНОВЕ ЛАТЕКСА НАТУРАЛЬНОГО КАУЧУКА И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ (57) Реферат: Использование: медицинские изделия, профилактические кондомы, медицинские и хирургические перчатки, а также другие пленочные латексные изделия. Сущность изобретения: изготавливают изделие на основе латекса натурального каучука МК методом макания. Композиция включает также латекс бутадиен-стирольного сополимера с содержанием звеньев стирола более 50 мас.% (возможно 75 - 85 мас.%). Количество латекса сополимера ...

Dispersants and dispersant viscosity index improvers from selectively hydrogenated polymers: hydroformylation/reductive amination reaction products

本发明提供分散剂和分散剂粘度指数改进剂,包括已氢化、官能化、非必要地改性和后处理的共轭二烯烃聚合物。这些分散剂物质包括两种不同共轭二烯烃的共聚物。将这些聚合物选择性氢化生产具有高度控制量的不饱和度的聚合物,其中所述不饱和度允许高度选择性官能化。可通过加氢甲酰化接着还原胺化将这些聚合物官能化。还提供了已借助本发明分散剂物质对其分散性和/或粘度性能进行改进的润滑流体,如矿物油和合成油。还提供改进润滑流体如矿物和合成润滑油的分散性和/或粘度性能的方法。这些分散剂物质还可包括一种载体流体以提供分散剂浓缩物。

Waterborne polyurethane emulsion, nitrile rubber-polyurethane composite emulsion and application thereof

本发明公开了一种抗菌水性聚氨酯乳液、丁腈胶‑聚氨酯复合乳液及其应用。抗菌水性聚氨酯乳液通过如下方法制备得到：在真空脱水的聚合物多元醇中加入二异氰酸酯和催化剂，惰性气氛下预聚反应45～150分钟，加入羟基扩链剂在60～80℃下扩链反应60～180分钟，再加入双季铵盐封端剂封端反应30～60分钟，加入胺基中和剂中和，再搅拌加水进行乳化即得抗菌水性聚氨酯乳液。本发明的水性聚氨酯乳液将抗菌组分共价接枝到聚氨酯分子链上，与丁腈胶乳以特定比例复配使用制备得到丁腈胶‑聚氨酯复合乳液，解决了现有小分子抗菌剂物理混合易扩散，不仅残留余毒，而且抗菌时效短的问题，手套的拉伸强度为18～26MPa，断裂伸长率为600～800％，耐药品性好，抑菌率≥90％，符合GB15979‑2002要求。

Method of producing articles from polymer and obtained article

Изобретение относится к способам получения изделий из полимера для использования в медицине. Предлагаемый способ содержит стадии получения раствора полимера путем смешивания первого соединения, содержащего карбодиимидные группы, со вторым соединением, содержащим карбоксилированные группы, нанесения раствора полимера на формирователь, где стадию нанесения осуществляют в течение не более 2 часов после получения раствора полимера, и отверждения раствора полимера. Раствор полимера может содержать pH-регулятор, состоящий из гидроксида аммония. Техническим результатом изобретения является снижение затрат за счет сокращения времени, необходимого для производства. 3 н. и 14 з.п. ф-лы, 10 табл., 27 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C08L 13/00 C08L 15/00 C08L 9/00 C08K 5/16 (13) 2 599 761 C2 (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014138136/05, 29.02.2012 (24) Дата начала отсчета срока действия патента: 29.02.2012 (72) Автор(ы): ЧИЭНГ Диинг Яв (MY), МАР Хунг Тан (MY) (73) Патентообладатель(и): НОБЕЛЬ САЙЕНТИФИК СДН. БХД (MY) (43) Дата публикации заявки: 20.04.2016 Бюл. № 11 R U Приоритет(ы): (22) Дата подачи заявки: 29.02.2012 (45) Опубликовано: 10.10.2016 Бюл. № 28 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.09.2014 (86) Заявка PCT: 2 5 9 9 7 6 1 (56) Список документов, цитированных в отчете о поиске: EP 0121083 A1, 10.101984;JP 11060667 A1, 02.03.1999;WO 03076537 A1, 18.09.2003. WO 2011068394 A1, 09.06.2011. RU 2004110411 A1, 20.10.2005. 2 5 9 9 7 6 1 R U (87) Публикация заявки PCT: WO 2013/129905 (06.09.2013) Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", пат.пов. Осипову К.В., рег. N 1356 (54) СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЯ ИЗ ПОЛИМЕРА И ПОЛУЧЕННОЕ ИЗДЕЛИЕ (57) Реферат: Изобретение относится к способам получения более 2 часов после получения раствора изделий из полимера для использования в полимера, и отверждения ...

Polypropylene resin molded article and method for producing the same

本発明は、耐衝撃性に優れ、特にＩＺＯＤ衝撃強度が高い、結晶性ポリプロピレン系樹脂成形体及びその製造方法を提供する。ポリプロピレン系樹脂１００重量部に対して、アミド系化合物の少なくとも１種を０．０１〜０．１重量部の割合で配合して、これを該アミド系化合物の溶融ポリプロピレン系樹脂に対する溶解温度以上の温度で、該アミド系化合物が溶融ポリプロピレン系樹脂に溶解するまで混練し、且つ、該アミド系化合物が溶融ポリプロピレン系樹脂に溶解した状態で射出及び／又は押出することにより、ポリプロピレン系樹脂のβ晶結晶が無配向である耐衝撃性に優れたポリプロピレン系樹脂成形体を得る。

Mixed ionic electronic conductors for improved charge transport in electrotherapeutic devices

This invention addresses the need for efficient dry skin electrodes. Robust, flexible Mixed Ionic Electronic Conductor (MIEC) electrodes were prepared by an aqueous solution route resulting in electrically conductive networks of carbon nanotubes (CNTs) and ionically conductive elastic matrix. The flexible electrode was characterized in terms of conductivity, ionic charge transfer resistance, and water uptake. The flexible electrode maintained low resistance even after multiple cycles of 50% extension and contraction.

METHOD FOR PRODUCING A PRODUCT FROM A POLYMER AND A PRODUCT PRODUCED

1. Способ получения изделия из полимера, включающий комбинацию стадий:получение раствора полимера путем смешивания первого соединения, содержащего карбодиимидные группы, со вторым соединением, содержащим карбоксилированные группы;предварительное нанесение на формирователь предварительного покрытия, где предварительное покрытие содержит по меньшей мере поверхностно-активное вещество, антиадгезив и ионный раствор;нанесение раствора полимера на формирователь, где стадию нанесения осуществляют в течение 2 часов после получения раствора полимера;отверждение раствора полимера; иснятие изделия из полимера с формирователя.2. Способ по п. 1, где стадия нанесения раствора полимера на формирователь включает погружение формирователя в раствор полимера.3. Способ по п. 1, где раствор полимера дополнительно содержит деминерализованную воду.4. Способ по п. 1, где стадию получения раствора полимера осуществляют без использования серы, оксида цинка и/или ускорителя.5. Способ по п. 1, где стадию нанесения осуществляют в течение 1 часа после получения раствора полимера.6. Способ по п. 5, где стадию нанесения осуществляют в течение 30 минут после получения раствора полимера.7. Способ по п. 1, где стадия отверждения длится от 8 до 20 минут.8. Способ по п. 7, где стадия отверждения длится от 12 до 16 минут.9. Способ по п. 1, где на стадии отверждения отверждают раствор полимера с образованием твердого карбоксилированного нитрильного латекса, и дополнительно включающий стадию выщелачивания латекса в течение 50-120 секунд после стадии отверждения.10. Способ по п. 9, где стадию выщелачивания латекса осуществляют в течение 50-70 секунд после стадии отверждения.11. Способ по п. 1, где стадию отверждения о РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C09D 115/00 (13) 2014 138 136 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014138136, 29.02.2012 (71) Заявитель(и): НОБЕЛЬ САЙЕНТИФИК СДН. БХД (MY) Приоритет(ы): (22) Дата подачи заявки ...

Butyronitrile gloves with good wearability and no allergic component and preparation method thereof

本发明公开了一种穿戴性良好无过敏成份的丁腈手套以及制备方法，以重量份计，其原料包括100份丁腈乳胶、0.5～2.5份羧基交联剂、0.5～2.5份钛白粉、0.8～2.5份氧化锌、0.2～0.5份表面活性剂、1.0份～2份氢氧化钾、0.005～0.03份消泡剂、0.1～0.3份抗氧化剂和2.5‑4份水；所述丁腈手套是膜厚为0.04～0.13mm，拉伸强度为大于25Mpa，伸长率为500‑600％的手套。本发明制备的手套不易产生针孔，且保持良好的力学性能以及穿戴性，同时硫化温度100℃‑105℃，降低手套生产工艺中的能耗。

Method of modifying butadiene-nitrile rubber for increasing their frost-resistance

FIELD: technological processes. SUBSTANCE: present invention relates to a method of modifying butadiene-nitrile rubbers. This method involves combination of rubber and modifying agent. Modifying agent used is a mixture of oligodiene and chloroparaffin in weight ratio of 0.5:1.0 to 1.0:0.5. Amount of modifying agent is equal to 20-40 pts.wt. by 100 pts.wt. of the end product. EFFECT: technologically simple method of modifying butadiene-nitrile rubber, which enables to obtain an end product with high frost- and oil-and-petrol resistance and long service life. 3 cl, 2 tbl, 6 ex, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 745 289 C1 (51) МПК C08C 19/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C08C 19/22 (2020.08) (21)(22) Заявка: 2020124502, 14.07.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 23.03.2021 (56) Список документов, цитированных в отчете о поиске: RU 2 677 139 C1, 15.01.2019. RU 2 318 842 C1, 10.03.2008. CN 108976534 A, 11.12.2018. RU 2 400 497 C2, 27.09.2010. (54) СПОСОБ МОДИФИКАЦИИ БУТАДИЕН-НИТРИЛЬНЫХ КАУЧУКОВ ДЛЯ ПОВЫШЕНИЯ ИХ МОРОЗОСТОЙКОСТИ (57) Реферат: Настоящее изобретение относится к способу 100 мас.ч. целевого продукта. Технический модификации бутадиен-нитрильных каучуков. результат – разработка технологически простого Данный способ включает совмещение каучука и способа модификации бутадиен-нитрильных модифицирующего агента. В качестве каучуков, позволяющего получить целевой модифицирующего агента используют смесь продукт с повышенной морозои олигодиена и хлорпарафина в массовом маслобензостойкостью и длительным сроком соотношении от 0.5:1.0 до 1.0:0.5. Количество эксплуатации. 2 з.п. ф-лы, 2 табл., 6 пр., 1 ил. модифицирующего агента равно 20-40 мас.ч. на R U 2 7 4 5 2 8 9 Адрес для переписки: 198035, Санкт-Петербург, ул. Гапсальская, 1,Федеральное государственное унитарное предприятие "Ордена Ленина и ордена Трудового Красного Знамени ...

Modified PVC composite glove and preparation method thereof

本发明涉及一种改性PVC复合手套，包括如下质量份数的原料组成：PVC糊树脂100份，DOTP增塑剂30～50份，TBC10～15份，DOA 5～10份，混合弹性体，2～5份，液体丁腈橡胶10～30份，降粘剂D8028～33份，热稳定剂1～2份，色浆1～2份。本发明还提供了所述改性PVC复合手套的制备方法，利用上述配方和生产方法得到的改性PVC复合手套可以解决普通PVC手套制造过程中糊料流动性差，手套成品手感和弹性差等问题，得到的改性PVC复合手套具有生产成本低、手感及弹性俱佳的特点。

Polymerisable water-based compsns prepn - by dispersing incompletely polymsd resin-curing agent in aq soln of surfactant

Polymerisable water-based compsns prepn - by dispersing incompletely polymsd resin-curing agent in aq soln of surfactant

Aq. compsns. contg. an incompletely polymsd. resin, esp. a polyester, epoxy, or furan resin, for use in moulding, extrusion, spraying, etc. are prepd. by homogeneously dispersing (I) the resin, and (II) a curing agent in an aq. soln. of (III) a surface active agent. Process gives homogeneous stable dispersions, even with a high filler content. The prods. are easily converted into finished resin prods. with good mechanical properties, and can be easily detached from the shaping surface, e.g. a mould.

PROCESS FOR PRODUCING AMINE-CONTAINING POLYMERIC PRODUCTS HAVING A HYDROCARBON EDGE

Improvements in the manufacture of articles of rubber or the like

Method of manufacturing articles by immersion, using dispersions of organic materials

Improvements in the manufacture of articles of rubber or similar material

Patent FR2279813B1

Improvements in the manufacture of rubber articles

Process for the direct production of rubber objects from rubber milk

Patent FR2376884B1

Process of mixing materials with rubber latex

Process of manufacturing rubber articles

THERMOSENSITIVE RUBBER LATEX COMPOSITIONS FOR THE MANUFACTURE OF MOLDED OBJECTS

L'invention concerne des compositions de latex de caoutchouc sensibles à la chaleur, comprenant un latex de caoutchouc naturel et un thermo-sensibilisateur. Ces compositions sont caractérisées en ce qu'elles comprennent en outre un sel de calcium, de préférence le chlorure ou le nitrate de calcium, qui conserve à la composition sa thermo-sensibilité à des pH supérieurs à 8,5, par exemple de 10 et plus. Utilisation pour la fabrication d'articles caoutchouteux divers, par immersion d'une forme chaude dans le latex ou extrusion à travers une matrice chauffée. The invention relates to heat sensitive rubber latex compositions comprising a natural rubber latex and a heat sensitizer. These compositions are characterized in that they further comprise a calcium salt, preferably calcium chloride or nitrate, which retains the composition's thermosensitivity at pH greater than 8.5, for example 10 and more. Use in the manufacture of various rubbery articles, by immersion of a hot form in the latex or extrusion through a heated die.

Natural rubber latex film products with improved tear resistance

Process for manufacturing articles of rubber and the like

Improvements in the manufacture of rubber articles

Improvements in the manufacture of rubber articles from latex

Patent FR2198955A1

Improvements in or relating to the manufacture of goods of or containing rubber or similar material

Perforated sheets of rubber or similar material are obtained by applying an aqueous dispersion to a backing partially or completely setting the dispersion and then producing the perforations. In an example latex is applied to a backing as of lead, or zinc, a coagulant applied partially sets it, and the coated backing is then placed cold in a hot press and a hot patterned plate is pressed on it. Vulcanization may occur before, during or after pressing. Specifications 219,635, 290,313, 307,315, and 324,375, [all in Class 70, Indiarubber &c.], are referred to.

Natural rubber latex film products with improved tear strength

Method of forming rubber articles

Process for molding rubber articles and articles produced thereby

Manufacture of rubber films

Impact-resistant poly(meth)acrylate moulding masses with high thermal stability

本发明涉及根据权利要求1的基于(甲基)丙烯酸酯(共)聚合物组分a.)，b.)，c.)和/或d.)的聚合物混合物，其中从聚合物混合物制备的试件同时具有如下性能： 拉伸模量 (ISO 527)为至少2500MPa， 维卡软化温度 VET(ISO 306－B50)为至少110℃， 抗冲击性 (ISO 179－2D，平面方式)为至少30kJ/m 2 ，和 熔融指数 MVR(ISO 1133，230℃/3.8kg)为至少1.0cm 3 /10min。本发明进一步涉及注塑的模塑件和涉及聚合物混合物用于制备注塑部件的用途。

Patent NO752633L

Improvements in the manufacture of rubber articles

Dispersants and dispersant viscosity index improvers from selectively hydrogenated polymers: hydroformylation/reductive amination reaction products

The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated, functionalized, optionally modified and post treated. The dispersant substances include a copolymer of two different conjugated dienes. The polymers are selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective funtionalization. The polymers may be functionalized by hydroformylation followed by reductive amination. Also provided are lubricant fluids, such as mineral and synthetic oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. Also provided are methods of modifying the dispersancy and/or viscometric properties of lubricating fluids such as mineral and synthetic lubricating oils. The dispersant substances may also include a carrier fluid to provide dispersant concentrates.

Thermal activation of films

Weatherproof and UV-resistant films based on poly(meth)acrylates are increasingly used for laminating plastic profiles, particularly profiles mad e of thermoplastic materials, wood or wood materials that, due to the high gla ss transition temperature of the film polymers, are difficult to bond using conventional methods. The invention relates to a method according to which this film is thermally activated before bonding thus enabling a rapid and reliable bonding in laminating methods.

Process for the production of rubber articles from rubber milk

Improvements in the manufacture of articles of rubber or similar material

Process for manufacturing molded objects from aqueous dispersions of organic materials

Rubber latex compositions

Process for the direct production of rubber articles from latex

THERMAL ACTIVATION OF FILMS.

Procedimiento de revestimiento de películas superficiales mono- o multicapa a base de polímeros con una temperatura de transición vítrea superior a 50°C sobre artículos moldeados de cloruro de polivinilo (FVC), polipropileno, copolímeros acrilonitrilo- butadieno-estirol (ABS), madera o aluminio caracterizado por los siguientes pasos procedimentales esenciales: a) cuando resulte apropiado, pretratamiento de la superficie de la película con un limpiador, b) cuando resulte apropiado, seguido de un tratamiento corona, c) cuando resulte apropiado, seguido de la aplicación de una imprimación sobre la superficie de la película, e) aplicación de un adhesivo reactivo de fusión de poliuretano sobre la superficie de la película, f) cuando resulte apropiado, pretratamiento de las superficies de los artículos moldeados mediante aplicación de imprimación o tratamiento con un limpiador, cuando resulte apropiado, seguido de evaporación de los componentes volátiles cuando resulte apropiado, con suministro de calor, cuando resulte apropiado, seguido de un tratamiento corona o tratamiento a la llama de la superficie del artículo moldeado, g) montaje de la película sobre los artículos moldeados, cuando resulte apropiado, con presionado, llevándose a cabo una activación térmica de la película, o bien como d) activación térmica mediante calentamiento con radiación electromagnética, antes de la aplicación del adhesivo de fusión y/o como h) activación térmica mediante radiación por convección o radiación IR de onda larga o con radiación electromagnética tras el montaje de la película y el artículo moldeado. Coating procedure for single- or multi-layer surface films based on polymers with a glass transition temperature greater than 50 ° C on molded articles of polyvinyl chloride (FVC), polypropylene, acrylonitrile-butadiene-styrene copolymers (ABS), wood or Aluminum characterized by the following essential procedural steps: a) when appropriate, pretreatment of the surface of the film with a ...

Process for the production of rubber articles directly from latex

Novel 1,3-dipolar compounds comprising an aromatic heterocycle and an imidazole ring

The invention relates to a 1,3-dipolar compound comprising a heterocycle. The invention relates to a compound of formula (I), which is useful for functionalizing a polymer by grafting and to the method for preparing same (formula (I)), in which: - Q represents a dipole comprising at least one nitrogen atom; - A represents a divalent heteroaromatic ring optionally substituted by one or more hydrocarbon chains, which may be identical or different, aliphatic, linear or branched, optionally substituted or interrupted by one or more heteroatoms; - E represents a divalent hydrocarbon linking group which may optionally contain one or more heteroatoms; - R1 represents a hydrogen atom or a C1-C20 alkyl group; and - Y and Z, which may be identical or different, each represent a hydrogen atom or a hydrocarbon chain, Y and Z also being able to form together a ring, in particular an aromatic ring, with the carbon atoms of the imidazole ring to which they are attached.

Vulcanization of dip-molded rubber articles with molten media baths

Pore-free rubber articles are prepared by dip-molding in a dipping medium that includes a vulcanizing agent, then by immersing the dip former in a heated liquid bath that is chemically inert. A particularly effective liquid bath is molten inorganic salt. In addition, the tensile properties of an article of vulcanized rubber can be improved to an unusually effective degree by immersing the already vulcanized article in a solution of a vulcanizing agent to cause the rubber of the article to absorb or imbibe the vulcanizing agent from the solution, and then immersing the rubber and the imbibed vulcanizing agent in a heated liquid bath to increase the degree of vulcanization.

Improvements in the manufacture of articles formed exclusively or partially of rubber or similar material

Novel 1, 3-dipolar compounds comprising aromatic heterocycles and imidazole rings

本发明涉及包含杂环的1,3‑偶极化合物。本发明涉及式(I)的化合物以及用于制备该化合物(式(I))的方法，所述式(I)的化合物用于通过接枝使聚合物官能化，其中：‑Q表示包含至少一个氮原子的偶极；‑A表示二价杂芳环，其任选被一个或多个烃链取代，所述烃链可以相同或不同、可为脂族、线型或支化的，任选被一个或多个杂原子取代或中断；‑E表示二价烃连接基团，其可以任选包含一个或多个杂原子；‑R 1 表示氢原子或C 1 ‑C 20 烷基基团；‑Y和Z，可以相同或不同，各自表示氢原子或烃链，Y和Z还能够与它们附接至的咪唑环的碳原子一起形成环，特别是芳环。

Epoxy-microsilica-organically modified nano layered silicate mixed composite for insulation using electric field and product thereby

본 발명은 전기장 분산을 이용한 절연용 에폭시-마이크로 실리카-나노 유기화 층상 실리케이트 혼합 콤포지트 제조방법 및 이로부터 제조된 혼합 콤포지트에 관한 것으로, 액상 에폭시 수지에 나노화된 유기화 층상 실리케이트를 완전 분산(박리화)시키고, 마이크로 실리카 입자 사이로 완전 박리되고 나노화된 유기화 층상 실리케이트를 균질하게 분산시킨 것이다. The present invention relates to a method for preparing an epoxy-micro silica-nano organic layered silicate mixed composite for insulation using electric field dispersion, and to a mixed composite prepared therefrom, and to completely disperse (delamination) of the organicized layered silicate nano-ized in a liquid epoxy resin. And homogenously dispersed organically layered silicate completely peeled off between the micro silica particles.

Gloves constructed from neoprene copolymers and method of making same

本发明描述由氯丁二烯共聚物制得的极好的无粉医用手套及其制造方法。本发明的手套不需要戴手套用的粉状试剂就可容易地戴上,它经过氯化和辐照消毒的后加工之后仍可保持它的抗刺穿性、拉伸强度、伸长500%时的应力和断裂伸长率。另外,本发明的手套在辐照消毒后表现出极小的退色(由泛黄指数变化的百分率测得)、极小的自粘性和极小的与手套包装材料的粘性。

Glove

Die Erfindung betrifft einen Schutzhandschuh, der verschiedene Polymerschichten in einem mehrschichtigen Verbundmaterial aufweist. Erfindungsgemäß beeinhaltet der Schutzhandschuh Polyvinylalkohol sowie eine darüber angeordnete Schutzschicht umfassend ein fluoriertes Elastomer. Weiterhin betrifft die Erfindung ein Verfahren zur Herstellung eines solchen Schutzhandschuhs. Durch die Kombination verschiedener Polymere sowie deren Anordnung im polymeren Verbundmaterial wird eine hohe Schutzwirkung gegen eine Vielzahl von chemischen Verbindungsklassen bei gleichzeitigen vorteilhaften mechanischen Eigenschaften erzielt. The invention relates to a protective glove comprising various polymer layers in a multilayer composite material. According to the invention, the protective glove comprises polyvinyl alcohol and a protective layer disposed above comprising a fluorinated elastomer. Furthermore, the invention relates to a method for producing such a protective glove. The combination of different polymers and their arrangement in the polymeric composite material a high protection against a variety of chemical compound classes is achieved with simultaneous advantageous mechanical properties.

Composition for dip forming and molding obtained by dip forming

A composition for dip forming which comprises: a latex for dip forming which contains a copolymer obtained by copolymerizing 100 parts by weight of a monomer mixture comprising 70-85 parts by weight of a conjugated diene monomer, 10-28 parts by weight of an aromatic vinyl monomer, 2-5 parts by weight of an ethylenically unsaturated acid monomer, and 0-18 parts by weight of other monomer copolymerizable therewith, the copolymer having a toluene insoluble content of 30 wt.% or higher and a degree of swelling in toluene of 70 times or less; and a vulcanizing agent, a vulcanization accelerator, and zinc oxide which have been incorporated in the latex in amounts of 0.5-2 parts by weight, 0.25-1 part by weight, and 0.5-1 part by weight, respectively, per 100 parts by weight of the latex on a solid basis. The composition for dip forming can give a dip-formed molding which has excellent texture, has sufficient tensile strength and elongation at brake, and has excellent retention of tight adhesion.

PROCESS FOR THE PRODUCTION OF POLYMERIC PRODUCTS CONTAINING AN AMINE HAVING A HYDROCARBON AREA

L'INVENTION CONCERNE UN PROCEDE DE FORMATION DE PRODUITS POLYMERIQUES AYANT UN FORT DEGRE DE GROUPES ALCOYLENEAMINES SECONDAIRES OU TERTIAIRES PENDANTS. SELON L'INVENTION, ON MET EN CONTACT, DANS UN MILIEU LIQUIDE, UN POLYMERE D'HYDROCARBURE AYANT DES GROUPES OLEFINIQUES AVEC UNE AMINE SECONDAIRE OU PRIMAIRE, DE L'OXYDE DE CARBONE ET DE L'HYDROGENE EN PRESENCE D'UNE QUANTITE CATALYTIQUE D'UN COMPOSE D'UN METAL DU GROUPE VIII. L'INVENTION S'APPLIQUE NOTAMMENT A LA PREPARATION D'HYDROCARBURES POLYMERIQUES SUBSTITUES EN AMINE. THE INVENTION RELATES TO A PROCESS FOR FORMING POLYMERIC PRODUCTS HAVING A HIGH DEGREE OF PENDANT SECONDARY OR TERTIARY ALCOYLENEAMINE GROUPS. ACCORDING TO THE INVENTION, A HYDROCARBON POLYMER HAVING OLEFINIC GROUPS, A SECONDARY OR PRIMARY AMINE, CARBON OXIDE AND HYDROGEN IN THE PRESENCE OF A CATALYTIC QUANTITY, IS CONTACT IN A LIQUID MEDIUM. 'A COMPOUND OF A METAL FROM GROUP VIII. THE INVENTION APPLIES IN PARTICULAR TO THE PREPARATION OF POLYMERIC HYDROCARBONS SUBSTITUTED IN AMINE.

Antimicrobial glove and method of making same

The present invention provides a multiple, long-term use, antimicrobial glove. The glove is formed from one or more layers of material having a latex-based matrix with an antimicrobial agent, such as diiodomethyl-p-tolylsulfone, homogeneously incorporated therein. Optionally, the glove may also have additional antimicrobial agents incorporated therein. The glove of the present invention is capable of inhibiting molds and other microbes from proliferating on any surface of the glove, during both storage and use, which results in the prevention of malodor, discoloration, and degradation of the glove. Also, the glove of the present invention is believed to be capable of providing an antimicrobial effect to surfaces contacted by the antimicrobial glove.

Film molded body

Provided is a film molded body obtained by crosslinking a latex composition containing a polymer latex and sulfur. The content of unreacted sulfur that has not bonded with the polymer is at least 50% by weight relative to the total 100% by weight of sulfur contained in the film molded body. The average chain number for sulfur bonded with the polymer is 3.0–5.0.

Dip forming composition and dip formed article

　風合いが良好で、引張強度に優れ、かつ屈曲疲労性に優れるディップ成形品であり、それを着用して作業を継続しても成形品自体の着色が発生しにくいディップ成形品および該ディップ成形品を与え得るディップ成形用組成物を提供する。 　共役ジエンゴムラテックスおよび有機過酸化物からなるディップ成形用組成物であって、該有機過酸化物の１０時間半減期温度をＸ（°C）とし、該有機過酸化物のオクタノール−水分配係数をＹとした時、該有機過酸化物が下記式（１）および（２）を満足するディップ成形用組成物、ならびに該組成物より得られるディップ成形品である。 １１≧Ｙ≧２ （１） 　　　 １００−２Ｙ≧Ｘ≧７０−２Ｙ　（２） 

Improvements relating to the production of articles of rubber or containing it

Improvements in or relating to the production of goods of or containing rubber or similar material

535,403. Rubber goods. INTERNATIONAL LATEX PROCESSES, Ltd., TWISS, D. F., and AMPHLETT, P. H. Nov. 20, 1939, No. 30419. [Class 70] Goods are obtained from aqueous dispersions of rubber or similar material containing zinc oxide by incorporating in the dispersions without coagulation an ionizable zinc salt giving a greater concentration of zinc ions in water than does zinc oxide and coagulating by lowering the pH value by means of an acid or a substance capable of generating an acid in the dispersion. Examples of suitable salts are zinc ammonium phosphate and zinc sulphite. Ammonium persulphate or silicofluorides may be used to lower the pH value. Specifications 290,313 and 219,635, [both in Class 70], are referred to.

Method for producing moulded bodies

Alkenyl-co-maleimide/diene rubber composition

A process for forming a diene rubber-grafted centipede polymer includes reacting an amine with a copolymer including maleimide- and alkenyl-derived units. The amine includes at least one functional group capable of grafting to a diene rubber. The copolymer is co-cured with a diene rubber to form the grafted centipede polymer.

Production of rubber goods directly from latex

A mould coated with a colloidal dehydrant capable of absorbing a large amount of water, is dipped into latex, and removed to allow the latex film to become partially dehydrated; the process is repeated until the requisite thickness of rubber is obtained, each film being dehydrated by the colloid through the moist rubber layer already deposited. The mould may be porous or non-porous, aluminium being preferred, and it is coated by dusting or dipping in a solution or dispersion of a colloid such as gum karaya, gum arabic, gum acacia, starch, casein, ammonium alginate, carob bean gum, methyl cellulose, and colloidal clays such as bentonite, wilkenite, ardmorite. According to an example, a mould is dipped in a solution of karaya gum, dried, and dipped for two minutes into 60 per cent latex. The mould is slowly withdrawn and exposed to the air for several minutes, and the process is repeated.