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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2254. Отображено 100.
11-04-2013 дата публикации

ACRYLIC RUBBER COMPOSITION, VULCANIZATE, HOSE PART, AND SEALING PART

Номер: US20130090424A1
Автор: ABE Yasushi, Ikari Satoru, Miyauchi Toshiaki
Принадлежит: DENKI KAGAKU KOGYO KABUSHIKI KAISHA

Provided are an acrylic rubber composition higher in processing stability and giving a vulcanizate having sufficient mechanical properties and favorable compression set resistance after secondary vulcanization (heated air vulcanization) and the vulcanizate thereof. The acrylic rubber composition according to the present invention includes (A) an epoxy group-containing acrylic rubber, (B) an imidazole compound represented by General Formula (1) below, (C) silica, and (D) a silane-coupling agent represented by General Formula (2) below. Such an acrylic rubber composition is superior in mechanical properties such as compression set resistance and hardness. 2. The acrylic rubber composition according to claim 1 , wherein the silica is contained in an amount of 20 to 80 parts by mass with respect to 100 parts by mass of the epoxy group-containing acrylic rubber.3. The acrylic rubber composition according to claim 1 , wherein the silane-coupling agent is contained in an amount of 0.1 to 2 parts by mass with respect to 100 parts by mass of the epoxy group-containing acrylic rubber.4. The acrylic rubber composition according to claim 1 , wherein the imidazole compound is contained in an amount of 0.1 to 5 parts by mass with respect to 100 parts by mass of the epoxy group-containing acrylic rubber.5. The acrylic rubber composition according to claim 1 , wherein:the silane-coupling agent is one or more agents selected from the group consisting of diethoxyethyl group-containing silane-coupling agents, dimethoxyphenyl group-containing silane-coupling agents, dimethoxymethyl group-containing silane-coupling agents, and dimethoxybutyl group-containing silane-coupling agents; and the silane-coupling agent is contained in an amount of 0.1 to 2 parts by mass with respect to 100 parts by mass of the epoxy group-containing acrylic rubber.6. A vulcanizate claim 1 , prepared by vulcanizing the acrylic rubber composition according to .7. A hose part claim 6 , comprising the vulcanizate ...

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Номер записи: 1
27-06-2013 дата публикации

Thermoplastic Resin Composition with Flowability, Transparency, and Impact Strength

Номер: US20130165577A1
Автор: JANG Tae Woog, Jung Chang Do
Принадлежит: CHEIL INDUSTRIES INC.

A thermoplastic resin composition includes (A) a transparent rubber modified aromatic vinyl copolymer including (a1) a graft copolymer including a core of a rubber based polymer and a shell formed on a surface of the core by graft polymerization of alkyl ester monomer, unsaturated nitrile monomer, and aromatic vinyl monomer; and (a2) a non-graft copolymer including a unit derived from an alkyl ester monomer; and (B) a low molecular weight acrylic copolymer with a weight average molecular weight of about 1,000 to about 10,000 g/mol. The thermoplastic resin composition can have a melt flow index of about 13 to about 35 g/10 min, a haze of about 2 to about 5%, and a Notch Izod impact strength of about 11 to about 15 kgf·cm/cm. 1. A thermoplastic resin composition comprising:(A) transparent rubber modified aromatic vinyl copolymer comprising (al) a graft copolymer including a core of a rubber based polymer and a shell formed on a surface of said core by graft polymerization of alkyl ester monomer, unsaturated nitrile monomer, and aromatic vinyl monomer; and (a2) a non-graft copolymer including a unit derived from an alkyl ester monomer; and(B) a low molecular weight acrylic copolymer having a weight average molecular weights of about 1,000 to about 10,000 g/mol.2. The thermoplastic resin composition according to claim 1 , wherein said transparent rubber modified aromatic vinyl copolymer (A) comprises said graft copolymer (al) in an amount of about 5 to about 50% by weight claim 1 , and said non graft copolymer (a2) in an amount of about 50 to about 95% by weight.3. The thermoplastic resin composition according to claim 1 , wherein the average particle size of said rubber based polymer is in a range of about 0.10 to about 0.30 nm.4. The thermoplastic resin composition according to claim 1 , wherein said rubber based polymer comprises a butadiene rubber claim 1 , acrylic rubber claim 1 , ethylene-propylene copolymer rubber claim 1 , butadiene-styrene copolymer rubber ...

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Номер записи: 2
11-07-2013 дата публикации

Rubber mixtures

Номер: US20130178566A1
Автор: Anke Blume, Eugenie Karasewitsch
Принадлежит: Evonik Industries AG

The invention relates to rubber mixtures comprising (A) at least one polyacrylate rubber, (B) at least one silicatic or oxidic filler or carbon black and (C) at least one epoxysilane. The rubber mixtures can be used to produce mouldings.

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Номер записи: 3
08-08-2013 дата публикации

ELASTOMER RUBBER WHICH DOES NOT USE SULFUR AND VULCANIZATION ACCELERATOR AND ELASTOMER RUBBER PRODUCT

Номер: US20130198933A1
Автор: Enomoto Norihide, Khoo Siong Hui, Lee Seek Ping, Lim Lawrence Siau Tian, Ong Eng Long
Принадлежит:

An elastomer composition comprising, an emulsion which comprises 25-30 weight % of acrylonitrile, 62-71 weight % of butadiene and 4-8 weight % of unsaturated carboxylic acid (total 100 weight %), wherein crosslink is formed by a bond through at least a part of substituent which is possessed by said unsaturated carboxylic acid, and residual substituent of at least one part of substituent which is possessed by said unsaturated carboxylic acid is left in state of free, further Mooney viscosity (ML(100° C.)) of the crosslinked product is 100-220, wherein thin film gloves composed of said elastomer does not contain sulfur which is a crosslinking agent and sulfur composition which is a vulcanization accelerator, thickness is 0.05-0.15 mm, gloves swelling ratio at gloves formation is 240-320, tensile stress is 22-35 MPa, elongation to break is 480-620% and tensile stress at 500% elongation is 15-35 MPa. 1. An elastomer composition comprising , an emulsion which comprises 25-30 weight % of acrylonitrile , 62-71 weight % of butadiene and 4-8 weight % of unsaturated carboxylic acid (total 100 weight %) , wherein crosslink is formed by a bond through at least a part of substituent which is possessed by said unsaturated carboxylic acid , and residual substituent of at least one part of substituent which is possessed by said unsaturated carboxylic acid is left in state of free , further Mooney viscosity (ML(100° C.)) of the crosslinked product is 100-220 and film weight swelling ratio of the crosslinked product is 200-400%.2. The elastomer composition of claim 1 , wherein said 25-30 weight % of acrylonitrile claim 1 , 62-71 weight % of butadiene and 4-8 weight % of unsaturated carboxylic acid (total 100 weight %) is obtained by addition of unsaturated carboxylic acid to acrylonitrile-butadiene which possesses unsaturated carboxylic acid or does not possess unsaturated carboxylic acid.3. The elastomer composition of claim 1 , wherein an end group of unsaturated carboxylic acid ...

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Номер записи: 4
10-10-2013 дата публикации

ACRYLATE RUBBER RAW MATERIAL COMPOSITION FOR CRANKCASE VENTILATION HOSE

Номер: US20130267644A1
Автор: ZHANG LEI
Принадлежит:

The present invention makes public a type of acrylate rubber materials used in crankcase ventilation pipes, which belongs to the technological field of rubber and has the following characteristic qualities: acrylate rubber PA 402L, 40-70; acrylate rubber PA 402H, 30-60; stearic acid, 1-2; age resister Dusantox 86, 2-3; processing agent Vanfre VAM, 1-2; carbon black N330, 25-45; carbon black N550, 10-30; potassium stearate, 0.2-0.5; sodium stearate, 1-4; brimstone, 0.1-0.3. The oil resistance of this acrylate rubber made by the above mentioned materials is superior than the now commonly used acrylate rubber's, its heat resistance corresponds to ethylene acrylate rubber's and its cost is cheaper. 1. An acrylate rubber raw material composition for crankcase ventilation hose comprising the following characteristic qualities: acrylate rubber PA 402L , 40-70; acrylate rubber PA 402H , 30-60; stearic acid , 1-2; age resister Dusantox 86 , 2-3; processing agent Vanfre VAM , 1-2; carbon black N330 , 25-45; carbon black N550 , 10-30; potassium stearate , 0.2-0.5; sodium stearate , 1-4; brimstone , 0.1-0.3.2. The acrylate rubber raw material composition for crankcase ventilation systems according to claim 1 , comprising the following characteristic qualities: acrylate rubber PA 402L claim 1 , 45; acrylate rubber PA 402H claim 1 , 55; stearic acid claim 1 , 1.2; age resister Dusantox 86 claim 1 , 2.5; processing agent Vanfre VAM claim 1 , 1.6; carbon black N330 claim 1 , 30; carbon black N550 claim 1 , 25; potassium stearate claim 1 , 0.3; sodium stearate claim 1 , 3; brimstone claim 1 , 0.2.3. The acrylate rubber raw material composition for crankcase ventilation systems according to claim 1 , comprising the following characteristic qualities: acrylate rubber PA 402L claim 1 , 65; acrylate rubber PA 402H claim 1 , 35; stearic acid claim 1 , 1.7; age resister Dusantox 86 claim 1 , 2.8; processing agent Vanfre VAM claim 1 , 2; carbon black N330 claim 1 , 25; carbon black N550 ...

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Номер записи: 5
24-10-2013 дата публикации

RUBBER COMPOSITION AND CROSS-LINKED RUBBER

Номер: US20130280459A1
Автор: EMORI Nobuyoshi, MORI Kentarou, NAKASHIMA Tomonori, SAKAMOTO Masato
Принадлежит: ZEON CORPORATION

A nitrile rubber composition containing a carboxyl group-containing nitrile rubber and a reactive silicone oil and cross-linked rubber obtained by using that nitrile rubber composition are provided. Further, a rubber composition for sliding member use containing a carboxyl group-containing rubber which contains carboxyl group-containing monomer units in a ratio of 0.1 to 20 wt %, a content ratio of monomer units which have unsaturated carbon-carbon double bonds of 20 wt % or less, and a content ratio of monomer units which have halogen atoms of 5 wt % or less and a reactive silicone oil is provided. 1. A nitrile rubber composition containing a carboxyl group-containing nitrile rubber and a reactive silicone oil.2. The nitrile rubber composition as set forth in claim 1 , wherein said carboxyl group-containing nitrile rubber has an iodine value of 120 or less.3. The nitrile rubber composition as set forth in claim 1 , wherein said carboxyl group-containing nitrile rubber contains α claim 1 ,β-ethylenically unsaturated nitrile monomer units 5 to 60 wt % claim 1 , carboxyl group-containing monomer units 0.1 to 20 wt % claim 1 , and conjugated diene monomer units 15 to 94.9 wt %.4. The nitrile rubber composition as set forth in claim 1 , wherein said reactive silicone oil has at least one reactive group which is selected from the group consisting of a hydroxyl group claim 1 , amino group claim 1 , mercapto group claim 1 , epoxy group claim 1 , carboxyl group claim 1 , acrylic group claim 1 , and methacryl group.5. The nitrile rubber composition as set forth in further containing silica.6. A rubber composition for sliding member use containinga carboxyl group-containing rubber which has carboxyl group-containing monomer units in a ratio of 0.1 to 20 wt %, a content ratio of monomer units which have unsaturated carbon-carbon double bonds of 20 wt % or less, and a content ratio of monomer units which have halogen atoms of 5 wt % or less anda reactive silicone oil.7. The ...

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Номер записи: 6
21-11-2013 дата публикации

POLYMER MICROPARTICLE-DISPERSED RESIN COMPOSITION AND METHOD FOR PRODUCING SAME

Номер: US20130310484A1
Автор: FURUKAWA Yoshio
Принадлежит: KANEKA CORPORATION

The present invention provides a means for improving the elastic modulus (rigidity), heat resistance, toughness, and impact resistance of a resin to provide these properties in a good balance. The present invention provides a polymer microparticle-dispersed resin composition containing 100 parts by weight of a resin and 0.1 to 150 parts by weight of polymer microparticles each containing at least two layers: a crosslinked polymer layer and a coating polymer layer, the resin composition having a particle dispersity of the polymer microparticles in the resin of not lower than 50%, the crosslinked polymer layer including 50% by weight to 99% by weight of at least one monomer having a Tg, as determined as a homopolymer, of not lower than 0° C., and 50% by weight to 1% by weight of at least one monomer having a Tg, as determined as a homopolymer, of lower than 0° C. 1. A polymer microparticle-dispersed resin composition , comprising:100 parts by weight of a resin; and0.1 parts by weight to 150 parts by weight of polymer microparticles each comprising at least two layers including a crosslinked polymer layer and a coating polymer layer,the resin composition having a particle dispersity of the polymer microparticles in the resin of not lower than 50%,the crosslinked polymer layer comprising 50% by weight to 99% by weight of at least one monomer having a Tg, as determined as a homopolymer, of not lower than 0° C., and 50% by weight to 1% by weight of at least one monomer having a Tg, as determined as a homopolymer, of lower than 0° C.2. The polymer microparticle-dispersed resin composition according to claim 1 ,wherein the crosslinked polymer layer comprises at least a crosslinked polymer layer comprising not less than 60% by weight of the monomer having a Tg, as determined as a homopolymer, of not lower than 0° C., and a crosslinked polymer layer comprising not less than 60% by weight of the monomer having a Tg, as determined as a homopolymer, of lower than 0° C.3. The ...

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Номер записи: 7
02-01-2014 дата публикации

ACRYLIC RUBBER COMPOSITION

Номер: US20140005339A1
Автор: Koga Atsushi, Sano Hiroyuki
Принадлежит: NOK CORPORATION

Disclosed is an acrylic rubber composition comprising, based on 100 parts by weight of carboxyl group-containing acrylic rubber, 0.05 to 5 parts by weight of a diurethane compound represented by the general formula: R(SO)(CH)OCONHRNHCOO(CH)(SO)R(R: a divalent organic group; R: when it is in a carbamate structure form, a group that decomposes by the action of a basic vulcanization accelerator; n: 0, 1, or 2; and m: 0 or 1), 0.3 to 3 parts by weight of a diaminodiphenyl ether-based compound, and 0.08 to 1.2 parts by weight of an N-containing heterocyclic compound; the composition being free from 1,3-o-tolylguanidine. This acrylic rubber composition allows high-speed vulcanization, without using 1,3-di-o-tolylguanidine generating o-toluidine, and has excellent scorch stability. Furthermore, the vulcanization-molded product of the acrylic rubber composition can sufficiently satisfy compression set characteristics required for sealing parts. 2. The acrylic rubber composition according to claim 1 , wherein the carboxyl group-containing acrylic rubber is an aliphatic diamine vulcanizable-type carboxyl group-containing acrylic rubber.5. The acrylic rubber composition according to claim 1 , wherein the diurethane compound is used in an amount of 0.05 to 5 parts by weight based on 100 parts by weight of acrylic rubber.6. The acrylic rubber composition according to claim 1 , wherein the diaminodiphenyl ether-based compound is 2 claim 1 ,2-bis[4-(4-aminophenoxy)phenyl]propane.7. The acrylic rubber composition according to claim 1 , wherein the diaminodiphenyl ether-based compound is used in an amount of 0.3 to 3 parts by weight based on 100 parts by weight of acrylic rubber.8. The acrylic rubber composition according to claim 1 , wherein the N-containing compound it 1 claim 1 ,8-diazabicyclo[5 claim 1 ,4 claim 1 ,0]undecene-7 claim 1 , 1 claim 1 ,5-diazabicyclo[4 claim 1 ,3 claim 1 ,0]nonene-5 claim 1 , or a salt thereof.9. The acrylic rubber composition according to claim 1 , ...

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Номер записи: 8
07-01-2021 дата публикации

PRODUCTION METHOD FOR DIP-MOLDED ARTICLE

Номер: US20210001521A1
Автор: KITAGAWA Masaru
Принадлежит: ZEON CORPORATION

A method for producing a dip-molded article, including a dip-molding step of dip-molding a latex composition containing a latex of a carboxyl group-containing conjugated diene-based rubber (A) and a water-soluble metal compound (B) using a dip mold to form a dip-molded layer on the surface of the dip mold; a moisture content adjustment step of adjusting the moisture content of the dip-molded layer formed on the surface of the dip mold to 1 to 30 wt %; and a beading step of performing beading after the adjusting of the moisture content, the beading including peeling a portion of the dip-molded layer formed on the surface of the dip mold from the dip mold. 1. A method for producing a dip-molded article , comprising:a dip-molding step of dip-molding a latex composition containing a latex of a carboxyl group-containing conjugated diene-based rubber (A) and a water-soluble metal compound (B) using a dip mold to form a dip-molded layer on the surface of the dip mold;a moisture content adjustment step of adjusting the moisture content of the dip-molded layer formed on the surface of the dip mold to 1 to 30 wt %; anda beading step of performing beading after the adjusting of the moisture content, the beading including peeling a portion of the dip-molded layer formed on the surface of the dip mold from the dip mold.2. The method for producing a dip-molded article according to claim 1 , further comprising:a cross-linking step of cross-linking the dip-molded layer after the beading; anda demolding step of removing the cross-linked dip-molded layer from the dip mold.3. The method for producing a dip-molded article according to claim 1 ,wherein the moisture content adjustment step includes a step of heating the dip-molded layer formed on the surface of the dip mold at 20 to 100° C. for 1 to 20 minutes.4. The method for producing a dip-molded article according to claim 1 ,wherein the moisture content adjustment step includes a step of heating the dip-molded layer formed on the ...

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Номер записи: 9
07-01-2016 дата публикации

Acrylonitrile butadiene rubber composition, acrylonitrile butadiene rubber molded article, and method for producing same

Номер: US20160002447A1
Автор: Haruhisa Masuda, Tomihiko Yanagiguchi
Принадлежит: Daikin Industries Ltd

An object of the present invention is to provide an acrylonitrile-butadiene rubber composition that can provide an acrylonitrile-butadiene rubber molded article having excellent properties of non-stickiness, oil resistance, heat resistance, and low-friction properties. The acrylonitrile-butadiene rubber composition of the present invention includes: an acrylonitrile-butadiene rubber (A); and a fluororesin (B), the fluororesin (B) being a perhalopolymer, the composition formed from a co-coagulated composition obtainable by co-coagulating the acrylonitrile-butadiene rubber (A) and the fluororesin (B).

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Номер записи: 10
18-01-2018 дата публикации

ACCELERATOR FREE AND HIGH FILLER LOAD NITRILE GLOVE

Номер: US20180016409A1
Автор: LIOU DER-LIN
Принадлежит:

A formulation of nitrile glove made from carboxylated acrylonitrile butadiene elastomer comprising an aluminum and zinc oxide compound as a crosslinker and a metal ion stabilizer without sulfur and accelerator for decreasing type IV allergy risk and providing a cost down method of increasing filler loading ability of carboxylated acrylonitrile butadiene latex. 1. A nitrile glove made from a compounded carboxylated acrylonitrile butadiene latex mixture is not using sulfur and accelerators with a formulation comprising100.0 phr of carboxylated acrylonitrile butadiene elastomer,0.5-5.0 phr of an aluminate compound or a zinc oxide or their mixture acts as a metal ion crosslinker,0.2-2.5 phr of a chelating agent or a polyol compound or their mixture acts as a metal ion stabilizer,0.2-2.0 phr of an alkali salt compound acts as pH adjustor to adjust compounded carboxylated acrylonitrile butadiene latex mixture pH range to 9-11.2. A nitrile glove made from a compounded carboxylated acrylonitrile butadiene latex mixture is not using sulfur and accelerators with a formulation comprising100.0 phr of carboxylated acrylonitrile butadiene elastomer,0.5-5.0 phr of an aluminate compound or a zinc oxide or their mixture acts as a metal ion crosslinker,0.2-2.5 phr of a chelating agent or a polyol compound or their mixture acts as a metal ion stabilizer,0.2-2.0 phr of an alkali salt compound acts as pH adjustor to adjust compounded carboxylated acrylonitrile butadiene latex mixture pH range to 9-11.5.0-40.0 phr of a calcium carbonate or a silica or their mixture acts as a filler, 0.1-1.0 phr of a sodium arylsulfonic acid or a sodium polyacrylate or their mixture acts as a filler dispersing agent.3. According to claim 1 , wherein the carboxylated acrylonitrile butadiene elastomer comprising 20-40% acrylonitrile claim 1 , 52-76% butadiene claim 1 , 4-8% carboxylic acid by solid weight.4. According to claim 1 , where in the aluminum compound is aluminum oxide or aluminum hydroxide or ...

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Номер записи: 11
18-01-2018 дата публикации

CROSS-LINKED RUBBER PRODUCT

Номер: US20180016423A1
Автор: Tsukada Akira
Принадлежит: ZEON CORPORATION

A cross-linked rubber product for a fuel seal is obtained by cross-linking a nitrile rubber composition including a nitrile rubber (A) containing 25 to 80% by weight of α,β-ethylenically unsaturated nitrile monomer units (a1), 20 to 75% by weight of conjugated diene monomer units (a2), and 0 to 30% by weight of cationic monomer units and/or monomer units capable of forming a cation (a3), and having a compression set ratio of 20% or less after being compressed in an atmosphere of 100° C. for 70 hours, and an inorganic filler (B) having an aspect ratio of 30 to 2,000. The content of the inorganic filler (B) is from 1 to 200 parts by weight with respect to 100 parts by weight of the nitrile rubber (A). The cross-linked rubber product is obtained by subjecting the nitrile rubber composition to secondary vulcanization at 100 to 150° C. for 1 to 24 hours. 1. A cross-linked rubber product for a fuel seal ,obtained by cross-linking a nitrile rubber composition including:a nitrile rubber (A) containing 25 to 80% by weight of α,β-ethylenically unsaturated nitrile monomer units (a1), 20 to 75% by weight of conjugated diene monomer units (a2), and 0 to 30% by weight of cationic monomer units and/or monomer units capable of forming a cation (a3), and having a compression set ratio of 20% or less after being compressed in an atmosphere of 100° C. for 70 hours; andan inorganic filler (B) having an aspect ratio of 30 to 2,000,a content of the inorganic filler (B) being from 1 to 200 parts by weight with respect to 100 parts by weight of the nitrile rubber (A), andobtained by subjecting the nitrile rubber composition to secondary vulcanization at 100 to 150° C. for 1 to 24 hours.2. The cross-linked rubber product according to claim 1 , wherein the nitrile rubber (A) has been hydrogenated.3. The cross-linked rubber product according to claim 1 , whereinthe nitrile rubber composition further contains a vinyl chloride resin (C), anda content of the vinyl chloride resin (C) is from 10 ...

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Номер записи: 12
21-01-2021 дата публикации

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

Номер: US20210017362A1
Автор: Jung Yong Seok, Kim Ji Hyun, Kwon Won Sang, Oh Seung Whan
Принадлежит: LG CHEM, LTD.

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 ...

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Номер записи: 13
28-01-2021 дата публикации

Rubber Composition for Tire and Studless Tire

Номер: US20210023880A1
Автор: Hirokazu Kageyama, Kazushi Kimura, Satoshi Mihara, Yutaro YAMAMOTO
Принадлежит: Yokohama Rubber Co Ltd

A rubber composition for a tire according to an embodiment of the present technology includes: 100 parts by mass of a diene rubber and from 1 to 30 parts by mass of a thermally expandable microcapsule composite body, and the thermally expandable microcapsule composite body contains one or more thermally expandable microcapsules and an acrylonitrile butadiene copolymer and/or a crosslinked body thereof covering the one or more thermally expandable microcapsules.

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Номер записи: 14
24-04-2014 дата публикации

Fine-particle, stable suspensions of functionalized, completely or partially hydrogenated nitrile rubbers

Номер: US20140114011A1
Автор: Duff Daniel Gordon, KRUEGER Lars, Soddemann Matthias, STEIN Sigrun
Принадлежит: LANXESS DEUTSCHLAND GMBH

Novel stable aqueous suspensions of a functionalized, completely or partially hydrogenated nitrile rubber are provided with very low emulsifier content and small particle diameter, furtheron a process for production thereof and the use thereof for producing composite materials via coating of substrate materials with the suspension. 1. An aqueous suspension of a carboxylated , completely or partially hydrogenated nitrile rubber with an emulsifier content of at most 1 part by weight , based on 100 parts by weight of the carboxylated , completely or partially hydrogenated nitrile rubber , wherein the average particle diameter of the carboxylated , completely or partially hydrogenated nitrile rubber in the suspension is in the range from 0.01 to 0.9 micrometre , measured by means of dynamic light scattering.2. The aqueous suspension according to claim 1 , wherein the average particle diameter of the carboxylated claim 1 , completely or partially hydrogenated nitrile rubber in the suspension is in the range from 0.05 to 0.8 micrometre; measured by means of dynamic light scattering.3. The aqueous suspension according to claim 1 , wherein the particle diameter d claim 1 , determined via laser diffraction (intensity-weighted) is in the range from 0.01 micrometre to 0.9 micrometre.4. The aqueous suspension according to claim 1 , in which the solids concentration of the carboxylated claim 1 , completely or partially hydrogenated nitrile rubber is from 5% to 65% by weight.5. The aqueous suspension according to claim 1 , comprising at most 0.5 part by weight claim 1 , of emulsifier claim 1 , based on 100 parts by weight of the carboxylated claim 1 , completely or partially hydrogenated nitrile rubber.6. The aqueous suspension according to claim 1 , comprising less than 0.09 part by weight claim 1 , of emulsifier claim 1 , based on 100 parts by weight of the carboxylated claim 1 , completely or partially hydrogenated nitrile rubber.7. The aqueous suspension according to ...

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Номер записи: 15
05-02-2015 дата публикации

Acrylic rubber composition and sealing device including the same

Номер: US20150035235A1
Автор: Takeshi Tsuda
Принадлежит: JTEKT Corp

A sheet is made of ACM. A backbone monomer of ACM is a mixture of ethyl acrylate and butyl acrylate. The weight ratio of butyl acrylate to ethyl acrylate is 0.8 to 1.3. A crosslinking monomer of ACM has a carboxyl group.

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Номер записи: 16
24-02-2022 дата публикации

Latex Composition for Dip Molding, Molded Article Molded from Latex Composition for Dip Molding, and Method of Producing Molded Article

Номер: US20220055256A1
Автор: Kwon Won Sang, Oh Seung Whan, Yeu Seung Uk, Yoon Tae Shik
Принадлежит: LG CHEM, LTD.

A dip-molded article includes an external molded layer and internal molded layer. The external molded layer includes a content of an ethylenically unsaturated nitrile-based monomer-derived repeating unit is 35 wt % to 60 wt %, and the internal molded layer in which a content of an ethylenically unsaturated nitrile-based monomer-derived repeating unit is 10 wt % to 28 wt %. 1. A dip-molded article comprising:an external molded layer in which a content of an ethylenically unsaturated nitrile-based monomer-derived repeating unit is 35 wt % to 60 wt %; andan internal molded layer in which a content of an ethylenically unsaturated nitrile-based monomer-derived repeating unit is 10 wt % to 28 wt %.2. The dip-molded article of claim 1 , wherein each of the external molded layer and the internal molded layer further includes a conjugated diene-based monomer-derived repeating unit and an ethylenically unsaturated acid monomer-derived repeating unit.3. The dip-molded article of claim 2 , wherein a content of the conjugated diene-based monomer-derived repeating unit included in the external molded layer is 30 wt % to 65 wt % claim 2 , and a content of the ethylenically unsaturated acid monomer-derived repeating unit included in the external molded layer is 0.1 wt % to 10 wt %.4. The dip-molded article of claim 2 , wherein a content of the conjugated diene-based monomer-derived repeating unit included in the internal molded layer is 60 wt % to 90 wt % claim 2 , and a content of the ethylenically unsaturated acid monomer-derived repeating unit included in the internal molded layer is 0.1 wt % to 10 wt %.5. The dip-molded article of claim 1 , wherein a ratio of a thickness of the external molded layer and a thickness of the internal molded layer is 1:9 to 9:1.6. The dip-molded article of claim 1 , wherein a ratio of a thickness of the external molded layer and a thickness of the internal molded layer is 1.5:1 to 2.5:1.7. A method of producing a dip-molded article claim 1 , ...

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Номер записи: 17
24-02-2022 дата публикации

Method of Preparing Carboxylic Acid-Modified Nitrile-Based Copolymer Latex

Номер: US20220056247A1
Автор: Jang Myung Su, Kim Ji Hyun, KIM Jung Eun, Kwon Won Sang, Oh Seung Whan
Принадлежит: LG CHEM, LTD.

A method of preparing a carboxylic acid-modified nitrile-based copolymer latex is provided. The method of preparing a carboxylic acid-modified nitrile-based copolymer later includes emulsion-polymerizing a monomer mixture including a conjugated diene-based monomer, an ethylenically unsaturated nitrile-based monomer, and an ethylenically unsaturated acid monomer in the presence of a cross-linking agent including glyoxal. 1. A method of preparing a carboxylic acid-modified nitrile-based copolymer latex , comprising emulsion-polymerizing a monomer mixture including a conjugated diene-based monomer , an ethylenically unsaturated nitrile-based monomer , and an ethylenically unsaturated acid monomer in the presence of a cross-linking agent including glyoxal.2. The method of claim 1 , wherein the monomer mixture includes a water soluble monomer.3. The method of claim 2 , wherein the emulsion polymerization is performed in the presence of a persulfate-based polymerization initiator including sodium persulfate claim 2 , potassium persulfate claim 2 , or ammonium persulfate; and an initial activator including hydroperoxide claim 2 , ferrous sulfate claim 2 , or sodium metabisulfite.4. The method of claim 1 , wherein the conjugated diene-based monomer includes 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 claim 1 , and/or isoprene.5. The method of claim 1 , wherein the ethylenically unsaturated nitrile-based monomer includes acrylonitrile claim 1 , methacrylonitrile claim 1 , fumaronitrile claim 1 , α-chloronitrile claim 1 , or α-cyanoethylacrylonitrile.6. The method of claim 1 , wherein the ethylenically unsaturated acid monomer includes acrylic acid claim 1 , methacrylic acid claim 1 , itaconic acid claim 1 , maleic acid claim 1 , fumaric acid claim 1 , maleic anhydride claim 1 , citraconic anhydride claim 1 , styrenesulfonic acid claim 1 , monobutyl fumarate claim 1 , ...

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Номер записи: 18
25-02-2021 дата публикации

Carboxylic Acid-Modified Nitrile-Based Copolymer Latex Composition, Latex Composition for Dip Molding Including the Same, and Molded Article Therefrom

Номер: US20210054177A1
Автор: Kim Ji Hyun, KIM Jung Eun, Yeu Seung Uk
Принадлежит: LG CHEM, LTD.

Provided is a carboxylic acid-modified nitrile-based copolymer latex composition, and more particularly, a carboxylic acid-modified nitrile-based copolymer latex composition including a carboxylic acid-modified nitrile-based copolymer. The carboxylic acid-modified nitrile-based copolymer includes a carboxyalkyl (meth)acrylate monomer-derived repeating unit and a repeating unit derived from an ethylenic unsaturated sulfonic acid monomer including a sulfonate salt or a sulfonate ester. A latex composition for dip molding including the same, and a molded article therefrom are also provided. 1. A carboxylic acid-modified nitrile-based copolymer latex composition comprising a carboxylic acid-modified nitrile-based copolymer ,wherein the carboxylic acid-modified nitrile-based copolymer comprises a carboxyalkyl (meth)acrylate monomer-derived repeating unit and a repeating unit derived from an ethylenic unsaturated sulfonic acid monomer including a sulfonate salt or a sulfonate ester.2. The carboxylic acid-modified nitrile-based copolymer latex composition of claim 1 , wherein the carboxyalkyl (meth)acrylate monomer-derived repeating unit is one or more selected from the group consisting of carboxyethyl (meth)acrylate claim 1 , carboxypropyl (meth)acrylate claim 1 , and carboxypentyl (meth)acrylate.3. The carboxylic acid-modified nitrile-based copolymer latex composition of claim 1 , wherein the ethylenic unsaturated sulfonic acid monomer-derived repeating unit is one or more selected from the group consisting of sodium vinylsulfonate claim 1 , sodium (meth)allyl sulfonate claim 1 , a sodium 2-methyl-2-propen-1-sulfonate salt claim 1 , a sodium 2-acrylamido-2-methylpropane sulfonate salt claim 1 , 3-sulfopropyl (meth)acrylate claim 1 , sodium α-methylstyrene sulfonate claim 1 , sodium ethylstyrene sulfonate claim 1 , and sodium 1-allyloxy-2-hydroxypropyl sulfonate.4. The carboxylic acid-modified nitrile-based copolymer latex composition of claim 1 , wherein a content of the ...

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Номер записи: 19
22-02-2018 дата публикации

High efficiency diffusion lighting coverings

Номер: US20180052260A1
Автор: Florence Mehlmann, Gary A. Hall, Jiaxin Jason Ge, Michael T. Burchill
Принадлежит: Arkema France SA

The invention relates to high efficiency diffusion lighting coverings useful in LED lighting applications. The diffusing lighting coverings are made of organic diffusing particles homogeneously dispersed in a transparent polymer matrix. The primary organic diffusing particles are refractive index mis-matched to the matrix polymer. The refractive index contrast between the polymer matrix and diffusion particles, and particle size are selected to provide a high efficiency (minimized particle loading). The high efficiency diffusion coverings provides excellent light diffusion, high hiding properties and high light transmission. The secondary diffusion particles may optionally be added to further improve selected target properties of the covering. Nano-sized ZnO inorganic particles may also function as diffusion particles and optical brighteners as well UV stabilizers. Articles made of this translucent composition are useful in commercial and residential lighting, motor vehicle illumination (lights, panels), street lighting, displays and signs, desktop monitors, and LCD/LED TVs.

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Номер записи: 20
01-03-2018 дата публикации

NITRILE RUBBER COMPOSITION AND CROSS-LINKED RUBBER

Номер: US20180057628A1
Автор: INOUE Sayaka, MOSAKI Shiho
Принадлежит: ZEON CORPORATION

A nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber containing α,β-ethylenically unsaturated nitrile monomer units in a ratio of 5 to 60 wt % and having an iodine value of 120 or less, carbon black, and a polyamine-based cross-linking agent, wherein a content of the carbon black is 100 parts by weight or more and less than 200 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber. Accordingly a nitrile rubber composition able to give a cross-linked rubber with excellent in original state physical properties, compression set resistance, and sour gasoline resistance and small in tension set is provided. 1. A nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber (a) containing α ,β-ethylenically unsaturated nitrile monomer units in a ratio of 5 to 60 wt % and having an iodine value of 120 or less , carbon black (b) , and a polyamine-based cross-linking agent (c) , whereina content of the carbon black (b) is 100 parts by weight or more and less than 200 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber (a).2. The nitrile rubber composition according to claim 1 , wherein the content of the carbon black (b) is 120 to 190 parts by weight.3. The nitrile rubber composition according to claim 1 , wherein the carbon black (b) is thermal black.4. The nitrile rubber composition according to claim 1 , wherein the carboxyl group-containing highly saturated nitrile rubber (a) contains 5 to 60 wt % of α claim 1 ,β-ethylenically unsaturated nitrile monomer units claim 1 , 1 to 30 wt % of carboxyl group-containing monomer units claim 1 , 0 to 60 wt % of α claim 1 ,β-ethylenically unsaturated monocarboxylic acid ester monomer units claim 1 , and 10 to 80 wt % of conjugated diene monomer units.5. The nitrile rubber composition according to claim 4 , wherein the ...

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Номер записи: 21
15-03-2018 дата публикации

HIGH THERMAL RESISTANCE SYNTHETIC RUBBER AND HIGH SPECIFIC GRAVITY COMPOUND FOR WHEEL BALANCE WEIGHT USING THE SAME

Номер: US20180072875A1
Автор: KIM Hyung-Seok
Принадлежит: HYUNDAI MOTOR COMPANY

The present invention relates to high thermal resistance synthetic rubber and a compound for a wheel balance weight using the same. In some aspects, the high specific gravity compound for the wheel balance weight has excellent curve adhesive strength and is capable of being cut and used as needed. Provided herein is a method of forming a high thermal resistance elastic body synthetic rubber. The method includes blending acrylic rubber and fluoro rubber. A wheel balance weight having a high specific gravity elastic body can be formed by using the high thermal resistance synthetic rubber described herein as a base polymer and a metal powder. 1. High thermal resistance synthetic rubber having from about 0.3 phr to 99.7 phr of fluoro rubber and from about 99.7 phr to 0.3 phr of acrylic rubber directly mutually vulcanized and blended.2. The high thermal resistance synthetic rubber of claim 1 , wherein the fluoro rubber is a polymer of 6-fluorinated propylene claim 1 , or a copolymer of the 6-fluorinated propylene and one or more monomers selected from the group consisting of fluorinated vinylidene and 4-fluorinated ethylene.3. The high thermal resistance synthetic rubber of claim 2 , wherein the 6-fluorinated propylene in from about 50 phr to 100 phr.4. The high thermal resistance synthetic rubber of claim 2 , wherein the fluoro rubber further comprises from about 20 mol % to 40 mol % of a vinyl monomer.5. The high thermal resistance synthetic rubber of claim 1 , wherein the acrylic rubber comprises acrylic acid ester claim 1 , and further comprises a copolymerizable monomer comprising at least one crosslinking component selected from a crosslinking hydroxyl group and a crosslinking chlorine atom.6. The high thermal resistance synthetic rubber of claim 5 , wherein the acrylic rubber further comprises a vinyl monomer copolymerizable with the acrylic acid ester.7. A high specific gravity compound for a wheel balance weight employing a high thermal resistance synthetic ...

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Номер записи: 22
19-03-2015 дата публикации

DYNAMICALLY CROSSLINKED THERMOPLASTIC MATERIAL PROCESS

Номер: US20150080151A1
Автор: Chen John C.
Принадлежит: Nike, Inc.

A golf ball comprises a dynamically crosslinked thermoplastic material prepared by a method including: (a) partially crosslinking a rubber composition of a rubber polymer and two free radical initiators at a first crosslinking temperature to form a thermoplastic, partially crosslinked elastomer composition; (b) mixing a thermoplastic polymer composition with the thermoplastic, partially crosslinked rubber composition and heating the mixture to a second crosslinking temperature higher than the first crosslinking temperature and at which the thermoplastic polymer composition is liquid; and (c) continuously mixing the mixture while further crosslinking the rubber composition to form a thermoplastic material having a dispersed phase of crosslinked rubber composition in the thermoplastic polymer composition. 1. A golf ball , comprising a dynamically crosslinked thermoplastic material prepared by a method comprising:(a) partially crosslinking a rubber composition at a first crosslinking temperature to form a thermoplastic, partially crosslinked rubber composition, wherein the rubber composition comprises a rubber polymer, a first free radical initiator, a second free radical initiator, and a monomer;(b) mixing a thermoplastic polymer composition with the thermoplastic, partially crosslinked rubber composition and heating the mixture to a second crosslinking temperature higher than the first crosslinking temperature, wherein the thermoplastic polymer composition is liquid at the second crosslinking temperature; and(c) continuously mixing the mixture while further crosslinking the elastomer composition to form a dynamically crosslinked thermoplastic material having a dispersed phase of crosslinked rubber composition.2. A golf ball according to claim 1 , wherein the one-minute half-life of the first free radical initiator is at least about 30° C. lower than the one-minute half-life of the second free radical initiator.3. A golf ball according to claim 2 , wherein the first ...

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Номер записи: 23
14-03-2019 дата публикации

NITRILE RUBBER COMPOSITION AND RUBBER CROSS-LINKED PRODUCT

Номер: US20190077938A1
Автор: FUKUMINE Yoshio
Принадлежит: ZEON CORPORATION

A nitrile rubber composition including: a carboxyl group-containing nitrile rubber containing 5 to 30% by weight of an α,β-ethylenically unsaturated nitrile monomer unit, 0.1 to 10% by weight of a carboxyl group-containing monomer unit, 15 to 60% by weight of an α,β-ethylenically unsaturated monocarboxylic acid ester monomer unit, and 20 to 64.9% by weight of a conjugated diene monomer unit and having an iodine value of 120 or less; and a reactive silicone oil. 1. A nitrile rubber composition , comprising:a carboxyl group-containing nitrile rubber containing 5 to 30% by weight of an α,β-ethylenically unsaturated nitrile monomer unit, 0.1 to 10% by weight of a carboxyl group-containing monomer unit, 15 to 60% by weight of an α,β-ethylenically unsaturated monocarboxylic acid ester monomer unit, and 20 to 64.9% by weight of a conjugated diene monomer unit and having an iodine value of 120 or less; anda reactive silicone oil.2. The nitrile rubber composition according to claim 1 , wherein the reactive silicone oil has at least one reactive group selected from the group consisting of a hydroxyl group claim 1 , an amino group claim 1 , a mercapto group claim 1 , an epoxy group claim 1 , a carboxyl group claim 1 , an acryl group claim 1 , and a methacryl group.4. The nitrile rubber composition according to claim 1 , wherein the reactive silicone oil has a content ratio of 0.1 to 30 parts by weight with respect to 100 parts by weight of the carboxyl group-containing nitrile rubber.5. The nitrile rubber composition according to claim 1 , further comprising silica.6. The nitrile rubber composition according claim 1 , further comprising a polyamine cross-linking agent.7. A cross-linked rubber obtained by cross-linking the nitrile rubber composition according to .8. The cross-linked rubber according to which is a seal material claim 7 , a belt claim 7 , a hose claim 7 , or a gasket. The present invention relates to a nitrile rubber composition capable of giving a cross-linked ...

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Номер записи: 24
26-03-2015 дата публикации

RESIN COMPOSITION AND SEAL MEMBER

Номер: US20150087785A1
Автор: Ito Hiroshi, Oowada Akihiro
Принадлежит: Kabushiki Kaisha Riken

There are provided a resin composition that can maintain excellent elasticity even after use under high temperature and high pressure for a long period, and a seal member. One aspect of a resin composition according to the present invention is a resin composition comprising a rubber component; and a thermoplastic resin, wherein a maximum value of loss tangent (tan δ) in a temperature range of 20° C. to 150° C. is 0.2 or less. 1. A seal member using a resin composition , the resin composition comprising: an acrylic rubber and a thermoplastic resin , wherein a maximum value of loss tangent (tan δ) of the seal member in a temperature range of 20° C. to 150° C. is 0.2 or less.2. (canceled)3. The seal member according to claim 1 , wherein the thermoplastic resin is polyvinylidene fluoride.4. The seal member according to claim 1 , wherein a circle-equivalent diameter of the thermoplastic resin in the resin composition is 40 nm or more and 100 nm or less.57.-. (canceled)8. The seal member according to claim 3 , wherein a circle-equivalent diameter of the thermoplastic resin in the resin composition is 40 nm or more and 100 nm or less.916.-. (canceled) The present invention relates to a resin composition and a seal member, and more particularly to a resin composition containing a rubber component and a thermoplastic resin, and a seal member using the same.In recent years, the demand for resin materials excellent in heat resistance and having low Compression Set has increased in various fields including automobile use. Examples of the applications of such resin materials include seal members (seal rings) for hydraulic Continuously Variable Transmissions (hereinafter referred to as “CVTs”). In the hydraulic CVT, the gear is continuously changed by correlatively changing the groove width of a pair of pulleys by the hydraulic pressure of a hydraulic pressure chamber to change the diameter of the pulleys. Usually, a fixed pulley is integrally formed on a drive shaft, and a ...

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Номер записи: 25
31-03-2022 дата публикации

Self-healing water-swellable hydraulic seal

Номер: US20220098459A1
Автор: Aaron David CLARK, James Patrick Barnhouse, Kelly Ann Williams
Принадлежит: Danfoss Power Solutions II Technology AS

A self-healing hydraulic seal is provided. The self-healing hydraulic seal is prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide.

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Номер записи: 26
25-03-2021 дата публикации

Method for producing latex and method for producing hollow resin particles

Номер: US20210087349A1
Автор: Nozomi YABUKI, Takashi Iga, Takeshi Hirata
Принадлежит: Zeon Corp

Provided is a method for producing a latex comprising hollow resin particles each with a high void ratio and a method for producing hollow resin particles each with a higher void ratio. In the method for producing the latex: a suspension treatment of the mixture liquid which comprises a monomer, a crosslinkable monomer, an oil-soluble polymerization initiator, a fat/fatty oil, a hydrocarbon solvent, a suspension stabilizer and an aqueous medium is carried out to prepare a suspension comprising monomer drops; a polymerization reaction of the suspension is carried out to prepare a precursor composition which comprises precursor particles each having a hollow portion including the hydrocarbon solvent.

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Номер записи: 27
25-03-2021 дата публикации

Latex Composition for Dip Molding, a Method of Preparing the Same, and Molded Article Therefrom

Номер: US20210087371A1
Автор: Han Jung Su, Jung Yong Seok, Kwon Won Sang, Oh Seung Whan, Yeu Seung Uk
Принадлежит: LG CHEM, LTD.

Provided is a latex composition for dip molding. The latex composition for dip molding includes a carboxylic acid-modified nitrile-based copolymer latex and a hydrophobically modified alkali-soluble emulsion thickener, wherein the hydrophobically modified alkali-soluble emulsion thickener includes a copolymer including an associative portion and a non-associative portion, and the associative portion includes a monomer-derived repeating unit substituted by one or more first hydrophobic groups selected from the group consisting of alkyl, alkenyl, perfluoroalkyl, and carbosilyl having 8 to 15 carbon atoms, and aryl, arylalkyl, arylalkenyl, alicyclic alkyl, and polycyclic alkyl having 6 to 15 carbon atoms. A method of preparing the latex composition for dip molding, and a molded article manufactured therefrom are also provided. 1. A latex composition for dip molding , comprising:a carboxylic acid-modified nitrile-based copolymer latex, anda hydrophobically modified alkali-soluble emulsion thickener, whereinthe hydrophobically modified alkali-soluble emulsion thickener includes a copolymer including an associative portion and a non-associative portion, andthe associative portion includes a monomer-derived repeating unit substituted by one or more first hydrophobic groups selected from the group consisting of alkyl, alkenyl, perfluoroalkyl, and carbosilyl having 8 to 15 carbon atoms, and aryl, arylalkyl, arylalkenyl, alicyclic alkyl, and polycyclic alkyl having 6 to 15 carbon atoms.2. The latex composition for dip molding of claim 1 , wherein the associative portion includes a monomer-derived repeating unit substituted by one or more hydrophobic groups selected from the group consisting of alkyl claim 1 , alkenyl claim 1 , perfluoroalkyl claim 1 , and carbosilyl having 12 to 14 carbon atoms claim 1 , and aryl claim 1 , arylalkyl claim 1 , arylalkenyl claim 1 , alicyclic alkyl claim 1 , and polycyclic alkyl having 10 to 15 carbon atoms.3. The latex composition for dip ...

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Номер записи: 28
31-03-2016 дата публикации

RUTHENIUM-BASED COMPLEXES, THEIR PREPARATION AND USE AS CATALYSTS

Номер: US20160090396A1
Автор: DAHCHEH Fatme, Lund Clinton, Ong Christopher, Sgro Michael, STEPHAN DOUGLAS WADE
Принадлежит:

The present invention relates to novel Ruthenium-based complex compounds which represent viable catalysts, in particular for all sorts of metathesis reactions. Such complex compounds can be prepared by a novel, very favourable and cost efficient method which includes the introduction of an alkylidene ligand into the complex by using vinyl sulfides or vinyl ethers. 2. The ruthenium-based complex according to claim 1 , wherein Xis halide claim 1 , pseudohalide claim 1 , alkoxide claim 1 , amide claim 1 , triflate claim 1 , phosphate claim 1 , borate claim 1 , carboxylate claim 1 , acetate claim 1 , halogenated acetate claim 1 , halogenated alkylsulfonate claim 1 , tosylate claim 1 , any weakly coordinating anionic ligands claim 1 , straight-chain or branched C-C-alkyl or C-C-aryl.5. The ruthenium-based complex according to claim 1 , wherein Rrepresents represents unsubstituted C-C-aryl or C-C-aryl being substituted with 1 claim 1 , 2 claim 1 , 3 claim 1 , 4 claim 1 , 5 or more substituents selected from the group consisting of F claim 1 , Cl claim 1 , Br claim 1 , I claim 1 , NO claim 1 , and CH.6. The ruthenium-based complex according to claim 1 , wherein R represents straight chain or branched claim 1 , substituted or unsubstituted C-C-alkyl.9. A catalyst system comprising at least one ruthenium-based complex of the general formula (I) according to and at least one Lewis acid.11. A method of catalysing metathesis reactions claim 1 , the method comprising contacting C═C double bond containing substrates with at least one ruthenium-based complex according to for ring-closing metatheses (RCM) claim 1 , cross metatheses (CM) or ring-opening methatheses (ROMP).12. The method according to claim 11 , wherein:the substrates are nitrile rubbers being copolymers or terpolymers comprising repeating units of at least one conjugated diene, at least one α,β-unsaturated nitrile monomer, and none, one or more further copolymerizable monomers; and {'br': None, 'sup': '8', 'sub': '3 ...

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Номер записи: 29
09-04-2015 дата публикации

Heat-curing reactive systems

Номер: US20150096681A1
Автор: Mathias Müller, Peter Born, Ralf Sauer
Принадлежит: Henkel AG and Co KGaA

The present application provides heat-curing preparations containing (a) a triglyceride fraction, the fatty acid distribution of which has a proportion of at least 5 wt. %, in particular at least 60 wt. %, of one or more Ω-3 fatty acids and/or one or more Ω-6 fatty acids, (b) at least one vulcanizing agent selected from the group consisting of (b1) sulfur, (b2) peroxidic vulcanizing agents, (b3) quinones and/or quinone dioximes and/or (b4) dinitrosobenzenes, and (c) at least one inorganic filler.

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Номер записи: 30
01-04-2021 дата публикации

ELASTOMERIC ARTICLE

Номер: US20210095104A1
Автор: LIM KEUW WEI, MOK CHUN FAH, TEH CHEE YANG, Wong Chong Ban
Принадлежит: TOP GLOVE INTERNATIONAL SDN. BHD.

An elastomeric formulation comprising elastomers, accelerator, antifoaming agent, antioxidant, crosslinker, colouring agent, surfactant, filler, pH adjuster and dispersing medium, wherein the elastomeric formulation has a total solid content ranging between 5% by weight to 40% by weight. Further, the present invention discloses a method of preparing an elastomeric formulation to manufacture hybrid elastomeric glove, wherein the method comprises the steps of blending Elastomer A with Elastomer B to produce hybrid elastomer and stirring the hybrid elastomer, adding while stirring accelerator, antifoaming agent, antioxidant, crosslinker, colouring agent, surfactant and filler one after another with no particular order and followed by pH adjuster into the hybrid elastomer to produce elastomeric formulation and stirring the elastomeric formulation continuously and allowing the elastomeric formulation to mature, wherein total solid content of the elastomeric formulation is adjusted to be between 5% by weight to 40% by weight by way of addition of dispersing medium into the elastomeric formulation and wherein pH range of the elastomeric formulation is adjusted to be between 9 to 11. 1. Elastomeric formulation comprising elastomers , accelerator , antifoaming agent , antioxidant , crosslinker , colouring agent , surfactant , filler , pH adjuster and dispersing medium , wherein the elastomers are a mixture of Elastomer A and Elastomer B , wherein Elastomer A is any one selected from the group consisting of carboxylated acrylonitrile butadiene rubber (XNBR) , acrylonitrile butadiene rubber (NBR) or mixtures therefrom , wherein the Elastomer B is poly(vinyl acetate/ethylene) copolymer (VAE) , wherein the Elastomer A is used in an amount ranging between 1 phr to 99 phr and wherein the Elastomer B is used in an amount ranging between 1 phr to 99 phr to make up to 100 phr as total dry weight of the elastomers , wherein the accelerator is used in an amount ranging between 0.5 phr ...

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Номер записи: 31
28-03-2019 дата публикации

METHOD FOR MANUFACTURING GLOVES

Номер: US20190091898A1
Автор: KITAGAWA Masaru, YAMAMOTO Misa
Принадлежит: ZEON CORPORATION

A method for producing a glove includes a step of forming a dip-molded layer by dip-molding a latex composition containing a latex of a carboxyl group-containing conjugated diene rubber (A) that does not have an isoprene-derived monomer unit, and a metal compound (B) including a divalent or higher metal, and a step of irradiating the dip-molded layer with radiation. 1. A method for producing a glove , comprising:a step of forming a dip-molded layer by dip-molding a latex composition containing a latex of a carboxyl group-containing conjugated diene rubber (A) that does not have an isoprene-derived monomer unit, and a metal compound (B) including a divalent or higher metal; anda step of irradiating the dip-molded layer with radiation.2. The method for producing a glove according to claim 1 , wherein the carboxyl group-containing conjugated diene rubber (A) is at least one selected from a carboxyl group-containing nitrile rubber (a1) claim 1 , a carboxyl group-containing styrene-butadiene rubber (a2) claim 1 , and a carboxyl group-containing butadiene rubber (a3).3. The method for producing a glove according to claim 1 , wherein the metal compound (B) including a divalent or higher metal comprises a metal compound including a trivalent or higher metal.4. The method for producing a glove according to claim 1 , wherein as the metal compound (B) including a divalent or higher metal claim 1 , a metal compound including a trivalent or higher metal and a metal compound including a divalent metal are used in combination.5. The method for producing a glove according to claim 3 , wherein the metal compound including a trivalent or higher metal is an aluminum compound.6. The method for producing a glove according to claim 3 , wherein the latex composition further contains at least one alcoholic hydroxyl group-containing compound (D) selected from a saccharide (d1) claim 3 , a sugar alcohol (d2) claim 3 , a hydroxy acid (d3) claim 3 , and a hydroxy acid salt (d4).7. The method ...

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Номер записи: 32
28-03-2019 дата публикации

Method for producing a prophylactic article

Номер: US20190092879A1
Автор: Armin HOLZNER, Jakob Cornelius Manhart, Melahat SAHIN, Raimund Schaller, Sandra Schloegl, Wolfgang Kern
Принадлежит: Semperit AG Holding

According to a method for the manufacture of a prophylactic article, especially of a glove, from a (carboxylated) diene rubber, at least one layer of a (carboxylated) diene latex is applied on a former and the (carboxylated) diene latex is cross-linked with a cross-linking agent, wherein a mercapto-functional siloxane polymer is used as cross-linking agent.

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Номер записи: 33
13-04-2017 дата публикации

Sidewall rubber composition and pneumatic tire

Номер: US20170101526A1
Автор: Manabu Kato, Ryota Takahashi, Takahiro Okamatsu, Yoshiaki Kirino
Принадлежит: Yokohama Rubber Co Ltd

An object of the present invention is to provide a rubber composition for a sidewall having excellent low heat build-up and durability when formed into a tire, and a pneumatic tire using the rubber composition. The rubber composition for a sidewall according to the present invention comprises a diene rubber and carbon black; the diene rubber comprising: a modified polymer obtained by reacting a nitrone compound with double bonds of a conjugated diene polymer; and a natural rubber; a content of the modified polymer in the diene rubber being from 8 to 65 mass %; a nitrogen adsorption specific surface area of the carbon black being from 20 to 60 [×10 3 m 2 /kg]; and a content of the carbon black being from 30 to 67 parts by mass per 100 parts by mass of the diene rubber.

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Номер записи: 34
23-04-2015 дата публикации

METHOD FOR MAKING A PARTICULATE PRODUCT CONTAINING NONIONIC SYNTHETIC ASSOCIATIVE THICKENER AND DISSOLUTION PROMOTION WATER SOLUBLE ADDITIVE

Номер: US20150112000A1
Автор: Bhargava Prachur, Gillette Paul C., Nguyen Tuyen T.
Принадлежит:

The presently disclosed and claimed inventive concept(s) relates to a method for making a particular product comprising a nonionic synthetic associative (NSAT) rheology modifier and a dissolution promotion water soluble additive. The method comprising the steps of: (a) obtaining the NSAT theology modifier and the dissolution promotion water soluble additive; (b) melting the NSAT theology modifier and the dissolution promotion water soluble additive; (c) mixing the molten NSAT theology modifier and the dissolution promotion water soluble additive; and (d) producing the particulate product from step (c). The NSAT rheology modifier is selected from the group consisting of hydrophobically-modified ethoxylated urethane (HEUR), hydrophobically-modified polyethylene glycol (HMPEG), and hydrophobically-modified polyacetal-polyether (HMPAPE). The particulate product prepared from the method is incorporated into a waterborne paint formula. 1. A method for making a particulate product comprising a nonionic synthetic associative thickener (NSAT) rheology modifier and a dissolution promotion water soluble additive , comprising the steps of:a) obtaining the NSAT rheology modifier and the dissolution promotion water soluble additive;b) melting the NSAT rheology modifier and the dissolution promotion water soluble additive;c) mixing the molten NSAT rheology modifier and dissolution promotion water soluble additive; andd) producing the particulate product from step c).2. The method of claim 1 , wherein the step d) is conducted using spray dryers claim 1 , disc pastillators claim 1 , drum flakers claim 1 , or grinders.3. The method of claim 1 , further comprising step e) cryogenic grinding.4. The method of claim 1 , wherein the dissolution promotion water soluble additive is sugar.5. The method of claim 1 , wherein the NSAT rheology modifier is selected from the group consisting of hydrophobically-modified ethoxylated urethane (HEUR) claim 1 , hydrophobically-modified polyethylene ...

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Номер записи: 35
03-05-2018 дата публикации

DEGRADABLE RUBBER COMPOSITIONS

Номер: US20180118925A1
Автор: Clark Sanford W., Gozalo Francisco A.
Принадлежит:

This disclosure relates to degradable rubber compositions, such as those, for example, comprising at least one natural rubber; at least one polyurethane; at least one curing agent; and at least one complex using zinc chloride and a disulfide, wherein the degradable rubber composition is degradable in an aqueous composition. 2. The degradable rubber composition of further comprising:at least one carbon black;at least one zinc soap;at least one vulcanization accelerant;at least one polymerization accelerant;at least one stearic acid;or combinations thereof.3. The degradable rubber composition of claim 1 , wherein the aqueous composition is selected from the group consisting of water claim 1 , water solutions claim 1 , downhole water-based solutions claim 1 , aqueous-based solutions claim 1 , and at least one brine.4. The degradable rubber composition of claim 1 , wherein the degradable rubber composition degrades from about 25% to about 90% within a period of time claim 1 , the period of time selected from the group consisting of about 1 day claim 1 , about 3 days claim 1 , about 7 days claim 1 , about 14 days claim 1 , about 21 days claim 1 , and about 28 days.5. The degradable rubber composition of claim 1 , wherein the degradable rubber composition degrades from about 25% to about 90% at a temperature claim 1 , the temperature selected from the group consisting of about 50° F. (10° C.) claim 1 , about 75° F. (23.9° C.) claim 1 , about 100° F. (37.8° C.) claim 1 , about 125° F. (51.7° C.) claim 1 , about 150° F. (65.6° C.) claim 1 , about 175° F. (79.4° C.) claim 1 , about 200° F. (93.3° C.) claim 1 , about 225° F. (107.2° C.) claim 1 , about 250° F. (121.1° C.) claim 1 , about 275° F. (135° C.) claim 1 , and about 300° F. (148.9° C.).6. The degradable rubber composition of claim 1 , wherein the degradable rubber composition degrades from about 25% to about 90% within about 14 days at about 200° F. (93.3° C.).7. The degradable rubber composition of claim 1 , wherein ...

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Номер записи: 36
03-05-2018 дата публикации

ACRYLIC RUBBER COMPOSITION

Номер: US20180118927A1
Автор: NEGAMI Tetsuro
Принадлежит: NOK CORPORATION

An acrylic rubber composition comprising 5 to 80 parts by weight, preferably 10 to 60 parts by weight, more preferably 20 to 40 parts by weight, of a styrene-based resin, based on 100 parts by weight of acrylic rubber. A vibration insulation member having an excellent tan δ value at a high temperature and improved vibration insulation properties can be molded by adding a specific ratio of a styrene-based resin to acrylic rubber. This acrylic rubber composition can be effectively used as a molding material for a mount, a grommet, or the like in the vicinity of an automobile engine used in a high temperature environment. 1. An acrylic rubber composition comprising 5 to 80 parts by weight of a styrene-based resin , based on 100 parts by weight of acrylic rubber.2. A vibration insulation member obtained by vulcanizing molding of the acrylic rubber composition according to .3. The vibration insulation member according to claim 2 , which is used as a mount or a grommet in the vicinity of an automobile engine. The present invention relates to an acrylic rubber composition. More particularly, the present invention relates to an acrylic rubber composition that can form a member having excellent vibration insulation properties at a high temperature.Conventional rubber materials have a tendency that tan δ is likely to decrease at a high temperature and vibration insulation effects are impaired. Acrylic rubber is used as a molding material of a vibration insulation member for a mount, a grommet, or the like in the vicinity of an automobile engine used in a high temperature environment; however, the same tendency is also observed in this case. There is a demand for improving this tendency.Patent Document 1: JP-A-11-158343An object of the present invention is to provide an acrylic rubber composition that is effectively used, for example, as a molding material of a vibration insulation member having a high tan δ value at a high temperature and excellent vibration insulation ...

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Номер записи: 37
03-05-2018 дата публикации

ACRYLIC RUBBER COMPOSITION

Номер: US20180119765A1
Автор: NEGAMI Tetsuro
Принадлежит: NOK CORPORATION

An acrylic rubber composition comprising 5 to 80 parts by weight, preferably 10 to 60 parts by weight, more preferably 20 to 40 parts by weight, of a styrene acrylic-based resin containing a functional group other than a carboxyl group, based on 100 parts by weight of acrylic rubber. A vibration insulation member having an excellent tan δ value at a high temperature and improved vibration insulation properties can be molded by adding a specific ratio of a styrene acrylic-based resin to acrylic rubber. This acrylic rubber composition can be effectively used as a molding material for a mount, a grommet, or the like in the vicinity of an automobile engine used in a high temperature environment. 1. An acrylic rubber composition comprising 5 to 80 parts by weight of a styrene acrylic-based resin containing a functional group other than a carboxyl group , based on 100 parts by weight of acrylic rubber.2. The acrylic rubber composition according to claim 1 , wherein the styrene acrylic-based resin containing a functional group other than a carboxyl group is a styrene acrylic-based resin containing an epoxy group or a styrene acrylic-based resin containing a hydroxyl group.3. The acrylic rubber composition according to claim 1 , wherein 50 wt. % or less of the functional group-containing styrene acrylic-based resin is replaced by a styrene resin.4. The acrylic rubber composition according to claim 1 , wherein 2 to 40 parts by weight of an ester-based plasticizer is further added.5. A vibration insulation member obtained by vulcanizing molding of the acrylic rubber composition according to .6. The vibration insulation member according to claim 5 , which is used as a mount or a grommet in the vicinity of an automobile engine used in a high temperature environment.7. The acrylic rubber composition according to claim 2 , wherein 50 wt. % or less of the functional group-containing styrene acrylic-based resin is replaced by a styrene resin.8. The acrylic rubber composition ...

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Номер записи: 38
24-07-2014 дата публикации

MICROGEL-CONTAINING VULCANIZABLE COMPOSITION BASED ON HYDROGENATED NITRILE RUBBER

Номер: US20140205782A1
Автор: Obrecht Werner, WRANA Claus
Принадлежит: LANXESS DEUTSCHLAND GMBH

A novel vulcanizable composition is provided, based on at least one hydrogenated nitrile rubber, on at least one peroxide, on at least one unsaturated carboxylic acid and/or salts thereof, and also on specific microgels. These vulcanizable compositions can be used to obtain vulcanized products which can in particular be used for drive belts, roll coverings, hoses and cables. 1. A vulcanizable composition comprisinga) one or more hydrogenated nitrile rubbers,b) one or more unsaturated carboxylic acids and/or one or more salts thereof,c) at least one peroxide andd) at least one microgel whose glass transition temperature is below −20° C.2. The vulcanizable composition according to claim 1 , wherein the component a) used comprises one or more hydrogenated nitrile rubbers which are co- or terpolymers based on at least one conjugated diene and on at least one α claim 1 ,β-unsaturated nitrile monomer and also if appropriate on other copolymerizable monomers claim 1 , in which the diene units incorporated into the polymer have been entirely or to some extent hydrogenated.3. The vulcanizable composition according to or claim 1 , wherein the component a) used comprises one or more hydrogenated nitrile rubbers in which the Mooney viscosity (ML 1+4 @100° C.) is in the range from 10 to 120 MU claim 1 , where the Mooney viscosity is determined to ASTM standard D1646.4. The vulcanizable composition according to or claim 1 , wherein the component a) used comprises one or more hydrogenated nitrile rubbers in which the Mooney viscosity (ML 1+4 @100° C.) is in the range from 15 to 100 MU claim 1 , where the Mooney viscosity is determined to ASTM standard D1646.5. The vulcanizable composition according to or claim 1 , wherein the component b) used comprises one or more unsaturated carboxylic acids and/or one or more salts thereof and the unsaturated carboxylic acid can be an α claim 1 ,β-ethylenically unsaturated mono- or dicarboxylic acid having from 3 to 10 carbon atoms claim 1 ,6. ...

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Номер записи: 39
27-05-2021 дата публикации

CROSSLINKING AGENT, POLYMER COMPOSITION CONTAINING CROSSLINKING AGENT, AND CROSSLINKED PRODUCT OF SAME

Номер: US20210155772A1
Автор: KOIDE Kazuo
Принадлежит: YUGENKAISHA FOUR ROAD RESEARCH

A crosslinking agent which is based on an aluminate complex salt of a hydroxyl group-containing organic compound, which crosslinks a carboxy group and a nitrile group. When the crosslinking agent is added to a carboxy group-denatured NBR latex, gloves having flexibility and a strength comparable to those of natural rubber gloves can be manufactured. Furthermore, the excellent creep resistance is a big characteristic. Moreover, unlike normal sulfur vulcanization gloves, the gloves do not contain sulfur and a vulcanization accelerator, and do not necessarily require addition of zinc oxide. 1. A crosslinking agent comprising:a neutralized product of an aluminate complex salt of a hydroxyl group-containing organic compound;{'sup': 2+', '2+', '++, 'a divalent metal ion Ca, Mg, or Zn bound product of the aluminate complex salt of a hydroxyl group-containing organic compound; or'}a reaction product with a carboxylic acid of the aluminate complex salt of a hydroxyl group-containing organic compound.2. The crosslinking agent according to claim 1 ,wherein the hydroxyl group-containing organic compound is a monohydric or polyhydric alcohol; a polyether polyol; a polyester polyol; a polymer polyol; a hydroxyl group-containing polymer selected from polyvinyl alcohol, carboxymethylcellulose, hydroxyethylcellulose, starch, dextrin, cyclodextrin, oligosaccharide, guar gum, alginic acid, pectin, and xanthane gum; a carbohydrate; or a hydroxycarboxylic acid.3. A polymer composition claim 1 , comprising a polymer and a crosslinking agent comprising:a neutralized product of an aluminate complex salt of a hydroxyl group-containing organic compound;a divalent metal ion Ca2+, Mg2+, or Zn++ bound product of the aluminate complex salt of a hydroxyl group-containing organic compound; ora reaction product with a carboxylic acid of the aluminate complex salt of a hydroxyl group-containing organic compound.4. The polymer composition according to claim 3 , wherein the neutralized product of an ...

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Номер записи: 40
17-05-2018 дата публикации

SEMICONDUCTIVE ROLLER

Номер: US20180136581A1
Автор: SUZUKI Daijiro
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

A semiconductive roller is provided, which includes a roller body made of a crosslinked product of a rubber composition containing a rubber component including epichlorohydrin rubber and diene rubber, and a crosslinking component including: 2. The semiconductive roller according to claim 1 ,wherein the proportion R of 4,4′-dithiodimorpholine is not less than 0.3 parts by mass and not greater than 2 parts by mass based on 100 parts by mass of the overall rubber component, andwherein the proportion S of sulfur is not less than 0.2 parts by mass and not greater than 0.7 parts by mass based on 100 parts by mass of the overall rubber component.3. The semiconductive roller according to claim 2 ,wherein the epichlorohydrin rubber is present in a proportion of not less than 15 parts by mass and not greater than 80 parts by mass based on 100 parts by mass of the overall rubber component, andwherein the diene rubber is present in a proportion of not less than 20 parts by mass and not greater than 85 parts by mass based on 100 parts by mass of the overall rubber component.4. The semiconductive roller according to claim 1 ,wherein the crosslinking component further includes a guanidine accelerating agent and a sulfenamide accelerating agent.5. The semiconductive roller according to claim 1 ,wherein the roller body has an oxide film formed in an outer peripheral surface thereof.6. The semiconductive roller according to claim 1 , which is incorporated as a developing roller or a charging roller in an electrophotographic image forming apparatus. This application corresponds to Japanese Patent Application No. 2016-221881, filed in the Japan Patent Office on Nov. 14, 2016, the disclosure of which is incorporated herein by reference in its entirety.The present invention relates to a semiconductive roller.Advantageously used as a developing roller, a charging roller or the like to be incorporated in an electrophotographic image forming apparatus is a semiconductive roller which ...

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Номер записи: 41
26-05-2016 дата публикации

PROCESS FOR THE PRODUCTION OF WATER AND SOLVENT-FREE HYDROGENATED NITRILE RUBBERS

Номер: US20160145425A1
Автор: Feller Rolf, Kirchhoff Jörg, Koenig Thomas, Lovegrove John, MERSMANN Franz-Josef, Obrecht Werner, Paul Hanns-Ingolf, Soddemann Matthias, Wagner Paul
Принадлежит:

The present invention relates to a process for the production of water and solvent-free hydrogenated nitrile rubber polymers, to the hydrogenated nitrile rubbers and the use thereof. 1. A hydrogenated nitrile rubber comprising repeating units derived from at least one conjugated diene , at least one αxβunsaturated nitrile , and optionally one or more copolymerizable monomers , the hydrogenated Middle rubber having as viscosity of at maximum 20 ,000 Pa*s and comprising less than 1.25 wt % of volatile compounds.2. The hydrogenated nitrile rubber of claim 1 , having a viscosity of at maximum 10.000 Pa*s claim 1 , and comprising less than 0.75 wt % of volatile compounds.3. The hydrogenated nitrile rubber of claim 2 , having a viscosity of at maximum 5 claim 2 ,000 Pa*s and comprising less than 0.5 wt % of volatile compounds.4. The hydrogenated nitrile rubber of claim 3 , having a viscosity of at maximum 1 claim 3 ,000 Pa*s and comprising less than 0.2 wt % of volatile compounds.5. The hydrogenated nitrile rubber according to claim 1 , wherein the volatile compounds include both water and volatile organic compounds.6. The hydrogenated nitrile rubber according to claim 4 , wherein the volatile compounds include both water and volatile organic compounds. This application is a continuation of pending U.S. patent application Ser. No. 13/874,930, filed May 1, 2013, which is a continuation of U.S. application Ser. No. 13/635,946, now abandoned, filed Sep. 19, 2012, with the same title, which claims the right of priority under 35 U.S. C. §119 (a)-(d) and 35 U.S.C. §365 of International Application No. PCT/EP2011/054285 filed Mar. 22, 2011 which is entitled to the right of priority of European Patent Application No. 10157846.6 filed Mar. 25, 2010, the contents of which are hereby incorporated by reference in their entirety.The present invention relates to water and solvent-free hydrogenated nitrile rubbers, a process for the production thereof and the use thereof. ...

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Номер записи: 42
02-06-2016 дата публикации

ACRYLATE-STYRENE-ACRYLONITRILE POLYMER AND THERMOPLASTIC RESIN COMPOSITION

Номер: US20160152806A1
Автор: Hwang Yong Yeon, KANG Eun Soo, Kim Min Jung, Lee Sang Mi, LEE Yeong Min, PARK Chun Ho
Принадлежит:

The present invention relates to an acrylate-styrene-acrylonitrile polymer, a method for preparing the same, and a thermoplastic resin composition. More specifically, the present invention has an effect of providing an acrylate-styrene-acrylonitrile polymer, a method for preparing the same, and a thermoplastic resin composition, wherein an N-vinyl monomer is applied such that the polymerization can be initiated by a redox system under conditions in which a grafting agent is not used, thereby improving the grafting efficiency of the acrylate-styrene-acrylonitrile polymer and thus improving powder characteristics and impact resistance while maintaining dye-ability; the content of free shells is lowered to improve the coagulation and latex stability; the polymerization is performed by the redox system without an activation liquid of a shell layer, thereby reducing additives and thus improving pigment dye-ability and significantly improving weather resistance. 1. An acrylate-styrene-acrylonitrile polymer comprising an acrylic rubber core and a SAN based shell , wherein the acrylate-styrene-acrylonitrile polymer comprises an outer enveloping amine-based monomer layer , and the SAN based shell is an activating-solution-free graft shell.2. The acrylate-styrene-acrylonitrile polymer according to claim 1 , wherein the outer enveloping amine-based monomer layer envelops the acrylic rubber core.3. The acrylate-styrene-acrylonitrile polymer according to claim 1 , wherein the amine based monomer is at least one selected from N-vinylformamide claim 1 , N-vinylacetamide claim 1 , N-vinylpropionamide claim 1 , N-vinyl butyramide claim 1 , N-vinyl 2-methyl propionamide claim 1 , N-methyl acrylamide claim 1 , N-ethyl acrylamide claim 1 , N-n-propyl acrylamide claim 1 , N-n-butyl acrylamide claim 1 , N-isopropyl acrylamide claim 1 , O-benzyl-N-vinylcarbamate claim 1 , methyl N-vinylcarbamate and N-vinyl tert-butyl carbamate.4. The acrylate-styrene-acrylonitrile polymer according to ...

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Номер записи: 43
02-06-2016 дата публикации

Dielectric film, method for manufacturing the same, and transducer including the same

Номер: US20160155532A1
Автор: Atsushi Takahara, Ryosuke MATSUNO, Shigeaki Takamatsu, Yota Kokubo, Yuji Higaki
Принадлежит: Kyushu University NUC, Sumitomo Riko Co Ltd

A dielectric film includes an elastomer and nanoparticles dispersed in the elastomer while chemically bound to the elastomer. The nanoparticles have cyano groups and are manufactured by a sol-gel process using an organometallic compound. A method for manufacturing a dielectric film includes: producing a chelate compound of an organometallic compound; producing a sol of metallic oxide particles having cyano groups by adding a silane coupling agent having a cyano group, an organic solvent, and water to the chelate compound; preparing a mixed solution by mixing the sol of the metallic oxide particles having cyano groups and a polymer solution containing a rubber polymer having a functional group capable of reacting with a hydroxy group; and forming a dielectric film by applying the mixed solution to a substrate and by curing a coating film.

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Номер записи: 44
21-06-2018 дата публикации

Rubber composition that can be cross-linked by means of amine and that has a light-colored filler

Номер: US20180171105A1
Автор: Dörte Becker, Manfred Hensel, Volker Borger
Принадлежит: Schill and Seilacher Struktol GmbH

The invention relates to a vulcanizable rubber composition which comprises a) one or more rubbers cross-linkable by means of amine, b) one or more white fillers and c) one or more polyorganosiloxanes with at least two NH 2 groups per molecule. In the rubber compositions the total quantity of organosilane is limited. The rubber compositions after vulcanization result in a good compression set.

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Номер записи: 45
22-06-2017 дата публикации

LIQUID EPOXY RESIN COMPOSITION

Номер: US20170174879A1
Автор: KUSHIHARA Naoyuki, SUMITA Kazuaki, YAJIMA Akira
Принадлежит: SHIN-ETSU CHEMICAL CO., LTD.

Provided is a liquid epoxy resin composition superior in rubber particle dispersibility, and exhibiting a lower elastic modulus without impairing a high heat resistance and mechanical strength that are inherent to epoxy resins. The liquid epoxy resin composition contains: 1. A liquid epoxy resin composition comprising:(A) a liquid epoxy resin; (B-1) 50 to 90% by mass of a liquid epoxy resin in the component (B) and', '(B-2) 10 to 50% by mass of rubber particles in the component (B), the rubber particles having an average particle diameter of 10 to 10,000 nm;, '(B) a rubber particle-dispersed epoxy resin mixture in an amount of 20 to 200 parts by mass with respect to 100 parts by mass of the component (A), and containing'}(C) a curing agent in an amount at which groups in the component (C) that are reactive with epoxy groups are in an amount of 0.7 to 1.3 equivalents with respect to 1 equivalent of epoxy groups in the components (A) and (B-1);(D) an inorganic filler in an amount of 20 to 1,500 parts by mass with respect to a total of 100 parts by mass of the components (A) to (C); and(E) a curing accelerator in an amount of 0.05 to 10 parts by mass with respect to the total of 100 parts by mass of the components (A) to (C).2. A liquid epoxy resin composition comprising: (B-1) 50 to 90% by mass of a liquid epoxy resin in the component (B) and', '(B-2) 10 to 50% by mass of rubber particles in the component (B), the rubber particles having an average particle diameter of 10 to 10,000 nm;, '(B) a rubber particle-dispersed epoxy resin mixture containing'}(C) a curing agent in an amount at which groups in the component (C) that are reactive with epoxy groups are in an amount of 0.7 to 1.3 equivalents with respect to 1 equivalent of epoxy groups in the component (B-1);(D) an inorganic filler in an amount of 20 to 1,500 parts by mass with respect to a total of 100 parts by mass of the components (B) and (C); and(E) a curing accelerator in an amount of 0.1 to 10 parts by mass ...

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Номер записи: 46
13-06-2019 дата публикации

METHOD OF MANUFACTURING GLOVES, GLOVE, AND EMULSION COMPOSITION FOR GLOVES

Номер: US20190174848A1
Автор: Enomoto Norihide, Matsumoto Nobuyuki, OGAWA Taichi, YANAGISAWA Kenichi
Принадлежит:

Provided is a method of producing a glove, the method including: (1) the step of immersing a glove forming mold in a liquid coagulant containing calcium ions so as to allow the coagulant to adhere to the glove forming mold; (2) the step of adjusting the pH to be 9 or higher using an ammonium compound or an amine compound and leaving a glove emulsion composition to stand with stirring; (3) the dipping step of immersing the glove forming mold, to which the coagulant has thus adhered in the step (1), in the glove emulsion composition; (4) the gelling step of leaving the glove forming mold, to which the glove emulsion composition has thus adhered, to stand at a temperature for a period that satisfy specific conditions; (5) the leaching step of removing impurities from a cured film precursor thus formed on the glove forming mold; (6) the beading step of, after the leaching step, winding the cuff portion of the resulting glove; (7) the precuring step of heating and drying the cured film precursor that has been subjected to the beading step; and (8) the curing step of heating the cured film precursor at a specific temperature for a specific period to obtain a cured film. 1. A method of producing a glove , said method comprising:(1) the step of immersing a glove forming mold in a liquid coagulant containing calcium ions so as to allow said coagulant to adhere to said glove forming mold;(2) the step of adjusting the pH to be 9 or higher using an ammonium compound or an amine compound and leaving a glove emulsion composition, which has the below-described formulation, to stand with stirring;(3) the dipping step of immersing said glove forming mold, to which said coagulant has thus adhered in said step (1), in said glove emulsion composition;(4) the gelling step of leaving said glove forming mold, to which said glove emulsion composition has thus adhered, to stand at a temperature for a period that satisfy the following conditions:conditions: a temperature and a period that ...

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Номер записи: 47
13-06-2019 дата публикации

LATEX COMPOSITION AND FILM MOLDED BODY

Номер: US20190177517A1
Автор: IGARI Naohiro, KATO Shinji, KITAGAWA Masaru, YAMAMOTO Misa
Принадлежит: ZEON CORPORATION

A latex composition has a latex of a carboxyl group-containing conjugated diene rubber and a metal compound including a trivalent or higher metal, wherein a content of the metal compound is 0.1 to 1.5 parts by weight, based on 100 parts by weight of the carboxyl group-containing conjugated diene rubber. 1. A latex composition comprising a latex of a carboxyl group-containing conjugated diene rubber (A) and a metal compound (B) including a trivalent or higher metal , wherein a content of the metal compound (B) is 0.1 to 1.5 parts by weight , based on 100 parts by weight of the carboxyl group-containing conjugated diene rubber (A).2. The latex composition according to claim 1 , wherein the metal compound (B) is an aluminum compound.3. The latex composition according to claim 1 , further comprising at least one alcoholic hydroxyl group-containing compound (C) selected from a saccharide (c1) claim 1 , a sugar alcohol (c2) claim 1 , a hydroxy acid (c3) claim 1 , and a hydroxy acid salt (c4).4. The latex composition according to claim 3 , wherein a content of the metal compound (B) and a content of the alcoholic hydroxyl group-containing compound (C) are such that a weight ratio expressed as “metal compound (B):alcoholic hydroxyl group-containing compound (C)” is 1:0.1 to 1:50.5. The latex composition according to claim 3 , wherein the alcoholic hydroxyl group-containing compound (C) is at least one selected from the sugar alcohol (c2) and the hydroxy acid salt (c4).6. The latex composition according to claim 1 , wherein the carboxyl group-containing conjugated diene rubber (A) is a carboxyl group-containing nitrile rubber (a1) containing 56 to 78% by weight of a conjugated diene monomer unit claim 1 , 20 to 40% by weight of an ethylenically unsaturated nitrile monomer unit claim 1 , and 2 to 6.5% by weight of an ethylenically unsaturated carboxylic acid monomer.7. The latex composition according to claim 1 , wherein the carboxyl group-containing conjugated diene rubber ( ...

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Номер записи: 48
29-06-2017 дата публикации

IMPROVED HIGH TEMPERATURE MECHANICAL PROPERTIES OF ELASTOMERS WITH SEMI-CRYSTALLINE POLYMERS FOR DOWNHOLE APPLICATIONS

Номер: US20170183484A1
Автор: Liang Feng, Reddy B. Raghava
Принадлежит:

Compositions and methods for improving the mechanical properties of elastomers for downhole sealing applications are provided. An embodiment is a composition comprising: a base elastomer; a curative agent; and a semi-crystalline polymer. Another embodiment is a tool comprising: at least one component comprising a vulcanized elastomer, wherein the vulcanized elastomer comprises a base elastomer, a curative agent, and a semi-crystalline polymer. Another embodiment is a method comprising: blending a base elastomer, a curative agent, and a semi-crystalline polymer to form a mixture; placing the mixture in a mold; and vulcanizing the mixture. 1. A composition comprising:a base elastomer;a curative agent; anda semi-crystalline polymer.2. The composition of further comprising a filler selected from the group consisting of: carbon black claim 1 , silica claim 1 , fibers claim 1 , and any combination thereof.3. The composition of wherein the base elastomer comprises an elastomer selected from the group consisting of: nitrile butadiene claim 1 , carboxylated acrylonitrile butadiene claim 1 , hydrogenated acrylonitrile butadiene claim 1 , carboxylated hydrogenated acrylonitrile butadiene claim 1 , hydrogenated carboxylated acrylonitrile butadiene claim 1 , ethylene propylene claim 1 , ethylene propylene diene claim 1 , tetrafluoroethylene claim 1 , propylene claim 1 , a fluorocarbon claim 1 , perfluoroelastomer claim 1 , and any combination thereof.4. The composition of wherein the curative agent comprises an compound selected from the group consisting of: an organic peroxide claim 1 , a sulfur compound claim 1 , an azo compound claim 1 , and any combination thereof.5. The composition of wherein the semi-crystalline polymer comprises a polymer selected from the group consisting of: polypropylene claim 1 , polyethylene claim 1 , a polyamide claim 1 , maleic anhydride grafted polypropylene claim 1 , maleic anhydride grafted polyethylene claim 1 , polyphenylene sulfide claim 1 , ...

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Номер записи: 49
07-07-2016 дата публикации

BLENDS OF THERMOPLASTIC POLYURETHANES AND RUBBERS AND PROCESS FOR PRODUCING SAME

Номер: US20160194483A1
Автор: Das Amit, HEINRICH Gert, JURK Rene, MAHMOOD Nasir, STOECKELHUBER Klaus Werner, Tahir Muhammad
Принадлежит: LEIBNIZ-INSTITUT FUER POLYMERFORSCHUNG DRESDEN E.V .

The invention relates to the field of chemistry and to the blends that can by way of example be used for rolls and roll coverings in the printing, textile, paper and graphic industry. The problem addressed by the present invention is provision of blends that have improved physical properties, and of a simple low-cost process with low energy consumption for producing same. The problem is solved via blends of thermoplastic polyurethanes and rubbers, consisting of rubber and from 5 to 80% by weight of thermoplastic polyurethanes, where the materials intermesh with one another in the regions of contact between rubber and polyurethanes. The problem is further solved via a process in which at least one rubber and from 5 to 80% by weight of polyurethane precursors are mixed and homogenized, where the precursors are prepolymers made of polyisocyanate(s) and of macroglyeol(s) and at least one chain extender, and/or monomers of polyisocyanates, of macroglycols and of chain extenders. 1. Blends of thermoplastic polyurethanes and rubbers , composed of rubber or a rubber mixture and 5 to 80 percent by weight , based on the blend , of one or more thermoplastic polyurethanes that are present in the rubber or in the rubber mixture in a homogenized manner , and wherein intermeshing of the materials with one another is present in the regions of contact between the rubber or rubber mixtures and the polyurethanes.2. Blends according to in which synthetic rubbers claim 1 , natural rubbers claim 1 , acrylic rubbers claim 1 , chloroprene rubbers claim 1 , halobutyl rubbers claim 1 , polyurethane rubbers claim 1 , isoprene rubbers claim 1 , butyl rubbers claim 1 , nitrile-butadiene rubbers claim 1 , thermoplastic elastomers claim 1 , thermoplastic vulcanizates and/or plastomers or mixtures thereof claim 1 , advantageously vulcanized rubbers or rubber mixtures claim 1 , are present as rubbers or rubber mixtures.3. Blends according to in which up to 70 percent by weight claim 1 , based on ...

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Номер записи: 50
20-06-2019 дата публикации

Carboxylic Acid-modified Nitrile-based Copolymer Latex And Latex Composition For Dip Molding Comprising Same

Номер: US20190185641A1
Автор: Hyunwoo Kim, Jung Eun Kim, Seung Uk Yeu, Wonsang Kwon
Принадлежит: LG Chem Ltd

The present invention relates to a carboxylic acid-modified nitrile-based copolymer latex, a preparation method for producing the same, a latex composition for dip-molding comprising the same, and a molding product prepared therefrom, more particularly to a carboxylic acid-modified nitrile-based copolymer latex capable of ensuring physical properties equivalent to or better than those using sulfur and vulcanization accelerators or cross-linking agents such as zinc oxide without using them by preparing the latex so that a large amount of anionic compound is present on the surface of the latex particles, a preparation method for producing the same, a latex composition for dip-molding comprising the same, and a molding product prepared therefrom.

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Номер записи: 51
18-06-2020 дата публикации

ELASTOMERIC FILM-FORMING COMPOSITIONS AND ASSOCIATED ARTICLES AND METHODS

Номер: US20200190296A1
Автор: Foo Khon Pu, Prabhakaran Kumaresan
Принадлежит: SKINPROTECT CORPORATION SDN BHD

The invention relates to an elastomeric film-forming composition (a) a carboxylated butadiene-based elastomer, (b) polychlorobutadiene in an amount of less than 30% by weight of the polymer content of the composition, and (c) one or more cross-linking agents. The invention also relates to dipped articles, gloves, methods of manufacture and uses involving the composition. 136-. (canceled)37. An elastomeric film-forming composition comprising:(a) a carboxylated butadiene-based elastomer,(b) polychlorobutadiene in an amount of less than 30% by weight of the polymer content of the composition,(c) cross-linking agents including 0.01-0.5 phr of ionic cross-linking agent, 0.01-1.0 phr sulphur and 0.1-1.0 phr of one or more accelerators, and a total cross-linking agent amount of 0.1-2.5 phr, and(d) a total solids content of 5% to 30% by weight of the composition,wherein all of component (b) is non-carboxylated polychlorobutadiene.38. The elastomeric film-forming composition of claim 37 , wherein component (a) is selected from the group consisting of carboxylated nitrile butadiene rubber claim 37 , carboxylated styrene-butadiene rubber and carboxylated acrylonitrile-styrene-butadiene rubber.39. The elastomeric film-forming composition of claim 37 , wherein the amount of component (a) is between 71% to 99% by weight of the total polymer content of the composition.40. The elastomeric film-forming composition of claim 37 , wherein the composition comprises a further elastomer claim 37 , and the amount of component (a) is between 30-99% by weight of the total polymer content of the composition.41. The elastomeric film-forming composition of claim 37 , wherein the amount of component (b) in the composition is between 5-25% by weight of the total polymer content of the composition.42. The elastomeric film-forming composition of claim 37 , comprising a further elastomer in an amount of less than 50% by weight of the total polymer content of the composition.43. The elastomeric film- ...

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Номер записи: 52
06-08-2015 дата публикации

GLOVE HAVING EXCELLENT CHEMICAL RESISTANCE AND COMPOSITION FOR SAID GLOVE

Номер: US20150218352A1
Автор: Enomoto Norihide, Lee Seek Ping, Lim Lawrence Siau Tian, OGAWA Taichi, Ong Eng Long
Принадлежит:

An emulsion composition for producing a glove, the composition containing: (1) a carboxylated acrylonitrile-butadiene elastomer, comprising 30 to 40% by weight of acrylonitrile residues and 3 to 8% by weight of unsaturated carboxylic acid residues, having an elemental sulfur content detected by neutralization titration of a combusted product of the elastomer of not more than 1% by weight of the elastomer weight, and having a Mooney viscosity (ML(100° C.)) of 100 to 220, and (2) a poly(acrylonitrile-butadiene) having a styrene-equivalent weight-average molecular weight of 7,000 to 500,000, wherein the weight ratio of component (1)/component (2) is from 70/30 to 90/10. Also provided is a glove which, as a result of comprising the emulsion composition, exhibits excellent chemical resistance and superior flexibility. 1. A carboxylated acrylonitrile-butadiene elastomer , comprising 30 to 40% by weight of acrylonitrile residues and 3 to 8% by weight of unsaturated carboxylic acid residues , having an elemental sulfur content detected by neutralization titration of a combusted product of the elastomer of not more than 1% by weight of the elastomer weight , and having a Mooney viscosity (ML(100° C.)) of 100 to 220.2. An emulsion composition comprising:{'sub': '(1+4)', '(1) a carboxylated acrylonitrile-butadiene elastomer, comprising 30 to 40% by weight of acrylonitrile residues and 3 to 8% by weight of unsaturated carboxylic acid residues, having an elemental sulfur content detected by neutralization titration of a combusted product of the elastomer of not more than 1% by weight of the elastomer weight, and having a Mooney viscosity (ML(100° C.)) of 100 to 220, and'}(2) a poly(acrylonitrile-butadiene) having a styrene-equivalent weight-average molecular weight of 7,000 to 500,000,a weight ratio of component (1)/component (2) being from 70/30 to 90/10.3. The emulsion composition according to claim 2 , wherein the Mooney viscosity of component (1) is from 100 to 200.4. ( ...

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Номер записи: 53
13-08-2015 дата публикации

LATEX COMPOSITION FOR DIP MOLDING AND DIP-MOLDED ARTICLE PRODUCED THEREFROM

Номер: US20150225553A1
Автор: Han Jung Su, Kim Byoung Yun, KIM Jung Eun, Yang Seung Hun, Yeu Seung Uk
Принадлежит:

Disclosed is a latex composition for dip molding comprising a carboxylic acid-modified nitrile copolymer latex and starch and an article produced therefrom. Advantageously, a dip-molded article having low syneresis, less stickiness and superior tensile strength can be obtained by using the carboxylic acid-modified nitrile latex in conjunction with starch. 1. A latex composition for dip molding comprising:a carboxylic acid-modified nitrile copolymer latex; andstarch.2. The latex composition for dip molding according to claim 1 , wherein the carboxylic acid-modified nitrile copolymer latex has a glass transition temperature of −50° C. to −15° C. and an average particle diameter of 50 nm or more.3. The latex composition for dip molding according to claim 1 , wherein the starch is a starch solution or a starch suspension.4. The latex composition for dip molding according to claim 1 , wherein the starch has a viscosity of 300 cPs or less at a temperature of 50° C. and at an aqueous solution concentration of 30% by weight.5. The latex composition for dip molding according to claim 1 , wherein the carboxylic acid-modified nitrile copolymer latex and the starch are present in a weight ratio of 70:30 to 99.9:0.1.6. The latex composition for dip molding according to claim 1 , wherein the carboxylic acid-modified nitrile copolymer is obtained by polymerizing a monomer mixture comprising 40 to 89% by weight of a conjugated diene monomer claim 1 , 10 to 50% by weight of an ethylenically unsaturated nitrile monomer and 0.1 to 10% by weight of an ethylenically unsaturated acid monomer.7. The latex composition for dip molding according to claim 6 , wherein the conjugated diene monomer comprises at least one selected from the group consisting of 1 claim 6 ,3-butadiene claim 6 , 2 claim 6 ,3-dimethyl-1 claim 6 ,3-butadiene claim 6 , 2-ethyl-1 claim 6 ,3-butadiene claim 6 , 1 claim 6 ,3-pentadiene and isoprene.8. The latex composition for dip molding according to claim 6 , wherein the ...

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Номер записи: 54
03-08-2017 дата публикации

ELASTOMERIC ARTICLES, COMPOSITIONS, AND METHODS FOR THEIR PRODUCTION

Номер: US20170218168A1
Автор: Foo Khon Pu, Prabhakaran Kumaresan
Принадлежит: SKINPROTECT CORPORATION SDN BHD

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 ...

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Номер записи: 55
20-08-2015 дата публикации

MOLDING MATERIAL FOR SLIDING MEMBER, AND SLIDING MEMBER

Номер: US20150232659A1
Автор: ASAI Keiji, Inoue Takanori
Принадлежит:

A molding material for a sliding member, the molding material being superior in processability and sliding properties, and a sliding member formed from the molding material for a sliding member are provided. The molding material for a sliding member contains a phenol resin, a boron compound, an elastomer and a filler. The elastomer preferably contains at least one selected from the group consisting of an acrylonitrile butadiene rubber, a urethane rubber and a silicone rubber, and more preferably an acrylonitrile butadiene rubber among them. The boron compound preferably contains at least one selected from the group consisting of boric acid, zinc borate and boron oxide, and the filler preferably contains a carbon fiber. Furthermore, the content of the elastomer with respect to 100 parts by mass of the carbon fiber is preferably no less than 5 parts by mass and no greater than 50 parts by mass. 1. A molding material for a sliding member comprising a phenol resin , a boron compound , an elastomer and a filler.2. The molding material for a sliding member according to claim 1 , wherein the elastomer comprises at least one selected from the group consisting of an acrylonitrile butadiene rubber claim 1 , a urethane rubber and a silicone rubber.3. The molding material for a sliding member according to claim 2 , wherein the elastomer comprises an acrylonitrile butadiene rubber.4. The molding material for a sliding member according to claim 1 , wherein the boron compound comprises at least one selected from the group consisting of boric acid claim 1 , zinc borate and boron oxide.5. The molding material for a sliding member according to claim 1 , wherein the filler comprises a carbon fiber.6. The molding material for a sliding member according to claim 5 , wherein a content of the elastomer with respect to 100 parts by mass of the carbon fiber is no less than 5 parts by mass and no greater than 50 parts by mass.7. The molding material for a sliding member according to claim 1 ...

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Номер записи: 56
20-08-2015 дата публикации

ANISOTROPIC CONDUCTIVE FILM, CONNECTION METHOD, AND ASSEMBLY

Номер: US20150237725A1
Автор: Aoki Kazuhisa, Uesawa Naoya, YAMADA Yasunobu
Принадлежит: DEXERIALS CORPORATION

An anisotropic conductive film, which contains a crystalline resin, an amorphous resin, and conductive particles, wherein the anisotropic conductive film is an anisotropic conductive film configured to anisotropic conductively connect a terminal of a first electronic part and a terminal of a second electronic part, and wherein the crystalline resin contains a crystalline resin containing a bond characterizing a resin, which is identical to a bond characterizing a resin contained in the amorphous resin. 1. An anisotropic conductive film , comprising:a crystalline resin;an amorphous resin; andconductive particles,wherein the anisotropic conductive film is an anisotropic conductive film configured to anisotropic conductively connect a terminal of a first electronic part and a terminal of a second electronic part, andwherein the crystalline resin contains a crystalline resin containing a bond characterizing a resin, which is identical to a bond characterizing a resin contained in the amorphous resin.3. The anisotropic conductive film according to claim 1 , wherein a mass ratio (crystalline resin:amorphous resin) of the crystalline resin to the amorphous resin is 25:75 to 75:25.4. The anisotropic conductive film according to claim 1 , wherein the crystalline resin contains a crystalline polyester resin claim 1 , and the amorphous resin contains an amorphous polyester resin.5. The anisotropic conductive film according to claim 1 , further comprising an elastomer.6. The anisotropic conductive film according to claim 5 , wherein a mass ratio (X:Y) of a sum (X) of an amount of the crystalline resin and an amount of the amorphous resin to an amount (Y) of the elastomer is 160:40 to 60:140.7. The anisotropic conductive film according to claim 1 , wherein the conductive particles have an average particle diameter of 2 μm to 40 μm.8. The anisotropic conductive film according to claim 1 , wherein the anisotropic conductive film satisfies a relationship that a difference (P1−P2) ...

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Номер записи: 57
19-08-2021 дата публикации

ACRYLIC RUBBER COMPOSITION

Номер: US20210253834A1
Автор: KAWANO Shingo, KOMURASAKI Hideto
Принадлежит: NOK CORPORATION

An acrylic rubber composition comprising 0.05 to 3.0 parts by weight of a fluorine-containing compound having a melting point of 30 to 100° C., based on 100 parts by weight of acrylic rubber. The acrylic rubber composition that can improve the dispersibility of a processing aid in the compound and the rubber compound handling properties during open roll operation without using a silicone-based processing aid, which causes bleeding of vulcanizates, and that satisfies the various characteristics, such as dimensional stability and heat resistance, of vulcanizates. 1. An acrylic rubber composition comprising 0.05 to 3.0 parts by weight of a fluorine-containing compound processing aids having a melting point of 30 to 100° C. , based on 100 parts by weight of acrylic rubber.2. The acrylic rubber composition according to claim 1 , wherein the acrylic rubber is an amine vulcanizable group-containing acrylic rubber.3. The acrylic rubber composition according to claim 2 , wherein the amine vulcanizable group-containing acrylic rubber is carboxyl group-containing acrylic rubber claim 2 , epoxy group-containing acrylic rubber claim 2 , or chlorine group-containing acrylic rubber.5. The acrylic rubber composition according to claim 1 , wherein other processing aids is further comprised at a ratio of about 1.5 parts by weight or less.6. A vulcanization molded product of the acrylic rubber composition according to .7. The vulcanization molded product according to claim 6 , which is used as a sealing material.8. A vulcanization molded product of the acrylic rubber composition according to .9. A vulcanization molded product of the acrylic rubber composition according to .10. A vulcanization molded product of the acrylic rubber composition according to . The present disclosure relates to an acrylic rubber composition. More particularly, the present disclosure relates to an acrylic rubber composition having excellent molding processability.Acrylic rubber has excellent heat resistance; ...

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Номер записи: 58
18-08-2016 дата публикации

ACRYLIC RUBBER COMPOSITION FOR HEAT-RESISTANT HOSE AND HEAT-RESISTANT HOSE USING THE SAME

Номер: US20160238164A1
Автор: Hirado Motoki, Noda Masashi, Sakaue Hiroaki
Принадлежит: Sumitomo Riko Company Limited

Provided are an acrylic rubber composition for a heat-resistant hose having high electric resistance and high strength and being excellent in suppression of the generation of bubble marks at the time of the production of a hose and a heat-resistant hose using the acrylic rubber composition for a heat-resistant hose. An innermost layer of the heat-resistant hose is formed by using an acrylic rubber composition for a heat-resistant hose, containing the following components (A) to (C) and having a content ratio between the component (A) and the component (B), (A)/(B), of from 95/5 to 45/55 in terms of a weight ratio: (A) an ethylene-acrylic rubber (AEM); (B) an acrylic rubber (ACM) excluding the component (A); and (C) carbon black having a value of iodine adsorption amount (mg/g)×DBP absorption amount (cm/100 g) of from 1,500 to 7,200. 1. An acrylic rubber composition for a heat-resistant hose , comprising the following components (A) , (B) and (C):(A) an ethylene-acrylic rubber (AEM);(B) an acrylic rubber (ACM) excluding the component (A); and{'sup': '3', '(C) carbon black having a value of iodine adsorption amount (mg/g)×DBP absorption amount (cm/100 g) of from 1,500 to 7,200,'}Wherein a content ratio between the component (A) and the component (B), (A)/(B), is from 95/5 to 45/55 by weight.2. An acrylic rubber composition for a heat-resistant hose according to claim 1 , wherein a content of the component (C) is from 40 parts by weight to 90 parts by weight with respect to 100 parts by weight of a total content of the component (A) and the component (B).3. An acrylic rubber composition for a heat-resistant hose according to claim 1 , wherein the content ratio between the component (A) and the component (B) claim 1 , (A)/(B) claim 1 , is from 93/7 to 70/30.4. An acrylic rubber composition for a heat-resistant hose according to claim 1 , wherein the carbon black (C) has a value of iodine adsorption amount (mg/g)×DBP absorption amount (cm/100 g) of from 1 claim 1 ,700 to ...

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Номер записи: 59
30-10-2014 дата публикации

Nitrile rubber composition and cross-linked rubber

Номер: US20140323658A1
Автор: Kazuhiro Ejiri, Masanobu Shinohara, Masato Sakamoto, Tomonori Nakashima
Принадлежит: Zeon Corp

A nitrile rubber composition containing a carboxyl group-containing nitrile rubber and an allylamine-based polymer which contains units expressed by the following general formula (1) is provided. (In the general formula (1), R 1 , R 2 , and R 3 respectively independently are one selected from a group including a hydrogen atom, alkyl group containing 1 to 4 carbon atoms which may have substituents, aryl group containing 6 to 12 carbon atoms which may have substituents, and halogen atom.)

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Номер записи: 60
06-11-2014 дата публикации

PROCESS FOR PRODUCING ACRYLIC RUBBER/FLUORINATED RUBBER COMPOSITION, CROSSLINKABLE COMPOSITION, LAMINATE AND HEAT RESISTANT AIR RUBBER HOSE

Номер: US20140329096A1
Автор: MIZUNO Go, Yodogawa Masahide
Принадлежит: Asahi Glass Company, Limited

To provide a process for producing an acrylic rubber/fluorinated rubber composition, capable of forming a layer excellent in the interlayer-adhesion with a layer formed by crosslinking a fluorinated rubber. 1. A process for producing an acrylic rubber/fluorinated rubber composition having particles of a crosslinked acrylic rubber (B) dispersed in a continuous phase of a fluorinated rubber (A) , which comprisesa step (1) of kneading a fluorinated rubber (A), a crosslinking agent for an acrylic rubber, which will not react with the fluorinated rubber (A) and a crosslinking coagent for an acrylic rubber, which will not react with the fluorinated rubber (A), to obtain a fluorinated rubber composition containing the crosslinking agent for an acrylic rubber and the crosslinking coagent for an acrylic rubber,and a step (2) of kneading under heating the fluorinated rubber composition obtained in the step (1) and an acrylic rubber (B) in a mass ratio of fluorinated rubber (A)/acrylic rubber (B)=5/95 to 50/50 to crosslink the acrylic rubber (B), and dispersing particles of the crosslinked acrylic rubber (B) in a continuous phase of the fluorinated rubber (A).2. The process for producing an acrylic rubber/fluorinated rubber composition according to claim 1 , wherein the fluorinated rubber (A) is a copolymer having repeating units based on tetrafluoroethylene and repeating units based on propylene.3. The process for producing an acrylic rubber/fluorinated rubber composition according to claim 2 , wherein the molar ratio of the repeating units based on tetrafluoroethylene to the repeating units based on propylene ((repeating units based on TFE)/(repeating units based on P)) in the fluorinated rubber (A) is from 40/60 to 70/30.4. The process for producing an acrylic rubber/fluorinated rubber composition according to claim 1 , wherein the fluorine content in the fluorinated rubber (A) is from 40 to 75 mass %.5. The process for producing an acrylic rubber/fluorinated rubber ...

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Номер записи: 61
06-11-2014 дата публикации

Latex for dip molding, composition for dip molding, preparation method of dip molded product, and dip molded product prepared thereby

Номер: US20140329956A1
Автор: Byoung Yun Kim, Ho Yeul Choi, Jung Eun Kim, Jung Su Han, Seung Hun Yang
Принадлежит: LG Chem Ltd

Provided are a latex for dip molding, a composition for dip molding, a preparation method of a dip molded product, and a dip molded product prepared thereby. The latex for dip molding includes a conjugated diene monomer, an ethylenically unsaturated nitrile monomer, and an ethylenically unsaturated acid monomer, wherein the latex further includes sodium methallyl sulfonate as a copolymerizable ionic monomer. A dip molded product having excellent tensile strength, elongation, and touch may be obtained from a composition using the latex according to the present invention, and the generation of limitations, such as non-uniformity of physical properties and difficulties in product management, may be prevented.

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Номер записи: 62
23-09-2021 дата публикации

DUCTILE ONE-COMPONENT THERMOSETTING EPOXY COMPOSITION

Номер: US20210292470A1
Автор: BORDEANU Nicolae, WOLSCHLEGER Leslie
Принадлежит: SIKA TECHNOLOGY AG

A one-component thermosetting epoxy resin composition, including a) at least one epoxy resin A having on average more than one epoxide group per molecule; b) at least one latent hardener for epoxy resins; c) at least one physical or chemical blowing agent BA; d) 3-15 wt.-% of at least one carboxyl group containing acrylonitrile/butadiene rubber ABR1 with a Mooney Viscosity of 15-30 MU (Mooney units), based on the total amount of epoxy resin A; and e) 3-15 wt.-% of at least one carboxyl group containing acrylonitrile/butadiene rubber ABR2 with a Mooney Viscosity of 35-50 MU (Mooney units), based on the total amount of epoxy resin A. The ratio of ABR1 to ABR2 is from 0.5-2.0. The epoxy resin adhesive is notable for the improved storage stability. 1. A one-component thermosetting epoxy resin composition , comprisinga) at least one epoxy resin A having on average more than one epoxide group per molecule;b) at least one latent hardener for epoxy resins; andc) at least one physical or chemical blowing agent BA; andd) 3-15 wt.-%, of at least one carboxyl group containing acrylonitrile/butadiene rubber ABR1 with a Mooney Viscosity (ML 1+4 at 100° C.) of 15-30 MU (Mooney units), based on the total amount of epoxy resin A; ande) 3-15 wt.-%, of at least one carboxyl group containing acrylonitrile/butadiene rubber ABR2 with a Mooney Viscosity (ML 1+4 at 100° C.) of 35-50 MU (Mooney units), based on the total amount of epoxy resin A,wherein the ratio of ABR1 to ABR2 is from 0.5-2.0.2. The one-component thermosetting epoxy resin composition according to claim 1 , wherein the fraction of the epoxy resin A having on average more than one epoxide group per molecule is from 30-90 wt % claim 1 , based on the total weight of the one-component thermosetting epoxy resin composition.3. The one-component thermosetting epoxy resin composition according to claim 1 , wherein the epoxy resin A is a solid epoxy resin.4. The one-component thermosetting epoxy resin composition according to claim ...

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Номер записи: 63
27-11-2014 дата публикации

ACRYLIC RUBBER COMPOSITION, ACRYLIC RUBBER MOLDED PRODUCT, AND METHOD FOR PRODUCING SAME

Номер: US20140346707A1
Автор: KITAHARA Takahiro, MASUDA Haruhisa, Nakano Yasuhiro, Yanagiguchi Tomohiko
Принадлежит: DAIKIN INDUSTRIES, LTD.

The present invention aims to provide an acrylic rubber composition capable of giving an acrylic rubber molded product good in low-friction properties and non-sticking properties. The present invention relates to an acrylic rubber composition containing an acrylic rubber (A) and a fluororesin (B), the fluororesin (B) being a perfluororesin. 1. An acrylic rubber composition comprising:an acrylic rubber (A) anda fluororesin (B),the fluororesin (B) being a perfluororesin.2. The acrylic rubber composition according to comprising a co-coagulated composition obtainable by co-coagulating the acrylic rubber (A) and the fluororesin (B).3. The acrylic rubber composition according to claim 1 ,wherein the fluororesin (B) is at least one selected from the group consisting of tetrafluoroethylene/hexafluoropropylene copolymers, tetrafluoroethylene/hexafluoropropylene/perfluoro(alkyl vinyl ether) copolymers, and tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymers.4. The acrylic rubber composition according to claim 1 ,wherein the acrylic rubber (A) comprises a polymerized unit based on at least one acrylate selected from the group consisting of ethyl acrylate, butyl acrylate, butoxy ethyl acrylate, and methoxy ethyl acrylate.5. An acrylic rubber molded product obtainable by cross-linking the acrylic rubber composition according to .6. A method of producing an acrylic rubber molded product comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(I) co-coagulating an acrylic rubber (A) and a fluororesin (B) that is a perfluororesin to provide a co-coagulated composition and then producing the acrylic rubber composition according to'}(II) molding and cross-linking the acrylic rubber composition to provide a cross-linked molded product; and(III) heating the cross-linked molded product to a temperature equal to or higher than a melting point of the fluororesin (B) to provide an acrylic rubber molded product.7. An acrylic rubber molded product obtainable by the method ...

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Номер записи: 64
15-09-2016 дата публикации

Methacrylic resin composition, method for producing the same, and molded article

Номер: US20160264771A1
Автор: Masahiro Watanabe
Принадлежит: Asahi Kasei Chemicals Corp

It is intended to obtain a methacrylic resin composition that has high transparency, is excellent in fluidity and heat resistance, and is low variable in impact resistance. The present invention provides a methacrylic resin composition containing predetermined amounts of a predetermined methacrylic resin (A) and a predetermined rubber polymer (B) and satisfying the following conditions (I) to (III): (I) the weight-average molecular weight is 40000 to 300000; (II) the area of a molecular weight range of 15000 to 30000 in a differential molecular weight distribution curve obtained from the GPC elution curve is 10 to 70% in terms of a ratio to the total area obtained from the differential molecular weight distribution curve; and (III) when arbitrary 10 fields of view of the methacrylic resin composition are observed at a magnification of 50000 times under a transmission electron microscope, a plurality of aggregates each containing a plurality of particles of the rubber polymer (B) are present, the plurality of aggregates include an aggregate α, and 0 or more and 10 or less rubber polymer particles (Bα) entirely surrounded by other rubber polymer particles are present in the aggregate α, and the average number of the rubber polymer particles (Bα) is 0 or more and 10 or less per one of the 10 fields of view.

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Номер записи: 65
14-09-2017 дата публикации

THERMOPLASTIC RESIN AND THERMOPLASTIC RESIN COMPOSITION INCLUDING THE SAME

Номер: US20170260300A1
Автор: HONG Sung Won, JU Min Cheol, Kim In Soo, LEE Hyung Sub, SHIN Min Seung
Принадлежит: LG CHEM, LTD.

The present invention relates to a thermoplastic resin. In accordance with the present invention, a thermoplastic resin exhibiting superior heat resistance, gloss, and whiteness while having mechanical properties identical to or higher than those of a conventional thermoplastic resin and a thermoplastic resin composition including the same are provided. 1. A thermoplastic resin , comprising an α-methyl styrene-vinyl cyan compound copolymer and a compound represented by Formula 1 below:{'br': None, 'sub': o', 'n', '2n+1', 'p, 'A(SiO)\u2003\u2003[Formula 1]'}wherein A is a divalent or trivalent metal, n is an integer of 1 to 100, and each of o and p is an integer of 1 to 5.2. The thermoplastic resin according to claim 1 , wherein the compound represented by Formula 1 is an in-situ compound generated by reacting a water-soluble silicate compound and a metal salt coagulant in the α-methyl styrene-vinyl cyan compound copolymer.3. The thermoplastic resin according to claim 1 , whereinthe compound represented by Formula 1 has a solubility in water of 0.001 to 0.1%.4. The thermoplastic resin according to claim 1 , whereinthe compound represented by Formula 1 is comprised in an amount of 0.0001 to 2 parts by weight based on 100 parts by weight of the α-methyl styrene-vinyl cyan compound copolymer.5. The thermoplastic resin according to claim 2 , wherein the vinyl cyan compound is one or more selected from the group consisting of acrylonitrile claim 2 , methacrylonitrile claim 2 , ethacrylonitrile claim 2 , and derivatives thereof.6. The thermoplastic resin according to claim 2 , wherein the α-methyl styrene is comprised in an amount of 45 to 80% by weight claim 2 , and the vinyl cyan compound is comprised in an amount of 15 to 50% by weight.7. The thermoplastic resin according to claim 2 , wherein the α-methyl styrene-vinyl cyan compound further comprises 1 to 15% by weight of an aromatic vinyl compound (except for α-methyl styrene).8. The thermoplastic resin according to ...

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Номер записи: 66
13-09-2018 дата публикации

Method of preparing bio-based elastomer composite comprising silica and poly dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate

Номер: US20180258264A1
Автор: Chao Mingyuan, Lei Weiwei, Qiao He, Wang Runguo, XU Wenji, ZHANG Liqun, Zhou Xinxin
Принадлежит:

The present disclosure involves a preparation method of bio-based silica/poly (itaconate-ter-isoprene-ter-glycidyl methacrylate) nanocomposite. Bio-based silica/poly (itaconate-ter-isoprene-ter-glycidyl methacrylate) nanocomposite is environment-friendly, and silica and poly (itaconate-ter-isoprene-ter-glycidyl methacrylate) are derived from non-petroleum base materials, which do not rely on fossil fuel. Compared with nanocomposite without nanocomposite, nanocomposites with glycidyl methacrylate have better silica diffusion, mechanical properties and wet-skid resistance of rubber product are improved while consuming the same time. Further, rolling resistance is decreased so that using silane coupling agent is avoided. Therefore, the processing technology is simplified, and VOC emission is avoided. It is a kind of “green tire” rubber product. 1. A method of preparing bio-based elastomer composition of silica or poly dibutyl itaconate-ter-isoprene-ter-glycidyl methacrylate , the method comprising: mixing 30 to 90 wt. % itaconate, 10 to 70 wt. % isoprene, and 0.5 to 20 wt. % glycidyl methacrylate, wherein the itaconate, isoprene and glycidyl methacrylate are monomers, and a total wt. of the itaconate, isoprene and glycidyl methacrylate is 100%,', 'adding deionized water with 50-500% wt. of the monomers as a dispersant,', 'adding 0.5 to 10% an emulsifier, 0 to 5% a chelating agent, 0.01 to 5% a first reductant, 0.01 to 5% a second reductant, and 0.01 to 5% an initiator,', 'performing reaction for 6 to 72 hours under 5 to 30° C. to obtain an emulsion of the poly itaconate-ter-isoprene-ter-glycidyl methacrylate,', 'after demulsification and desiccation by flocculant, obtaining a flocculent gel of the poly itaconate-ter-isoprene-ter-glycidyl methacrylate,', 'placing the flocculent gel in ethanol and water successively to purify the flocculent gel,', 'drying the flocculent gel for 24 hours in an air-circulating oven at 60° C. to obtain the bio-based elastomer comprising ...

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Номер записи: 67
22-09-2016 дата публикации

RUBBERT COMPOSITIONS AND USES THEREOF

Номер: US20160272793A1
Автор: BÉDARD François, COUÉ Jean-Damien, DUBÉ Denis, MACDONALD Lyle
Принадлежит:

There are provided rubber compositions comprising an elastomer comprising a rubber chosen from acrylonitrile-butadiene, hydrogenated acrylonitrile-butadiene, carboxylated acrylonitrile-butadiene and mixtures thereof; reinforcing fibers chosen from aramid fibers, carbon fibers, polyester fibers, glass fibers, nylon fibers and mixtures thereof, and/or nanometric filamentary structures chosen from nanowires, nanorods, nanofibers, nanoribbons, nanotubes and mixtures thereof, the nanometric filamentary structures being functionalized or unfunctionalized; and a filler chosen from carbon black and silica. These compositions can be cured or uncured and they can be used for preparing various articles. Methods for preparing such compositions are also disclosed. 1. A rubber composition comprising:an elastomer comprising a rubber chosen from acrylonitrile-butadiene, hydrogenated acrylonitrile-butadiene, carboxylated acrylonitrile-butadiene and mixtures thereof.reinforcing fibers chosen from aramid fibers, carbon fibers, polyester fibers, glass fibers, nylon fibers and mixtures thereof, and/or nanometric filamentary structures chosen from nanowires, nanorods, nanofibers, nanoribbons, nanotubes and mixtures thereof, said nanometric filamentary structures being functionalized or unfunctionalized; anda filler chosen from carbon black and silica.2. The composition of claim 1 , wherein in said composition claim 1 , said elastomer claim 1 , reinforcing fibers and/or nanometric filamentary structures and filler are substantially uniformly distributed.3. The composition of or claim 1 , wherein said composition comprises about 30 to about 85 wt. % of said elastomer claim 1 , about 35 to about 80 wt. % of said elastomer or about 45 to about 70 wt. % of said elastomer.4. The composition of or claim 1 , wherein said composition comprises about 45 to about 65 wt. % of said elastomer.5. The composition of or claim 1 , wherein said composition comprises about 50 to about 60 wt. % of said ...

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Номер записи: 68
22-08-2019 дата публикации

SELF-HEALING WATER-SWELLABLE HYDRAULIC SEAL

Номер: US20190256753A1
Автор: BARNHOUSE James Patrick, Clark Aaron David, WILLIAMS Kelly Ann
Принадлежит:

A self-healing hydraulic seal is provided. The self-healing hydraulic seal is prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide. 1. A self-healing hydraulic seal prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide.2. The self-healing hydraulic seal of claim 1 , wherein the base polymer is selected from the group consisting of acrylonitrile butadiene rubber (NBR) claim 1 , carboxylated acrylonitrile butadiene rubber claim 1 , hydrogenated acrylonitrile butadiene rubber claim 1 , carboxylated hydrogenated acrylonitrile butadiene rubber claim 1 , chlorosulfonated polyethylene rubber (CSM); and mixtures or blends thereof.3Tetrapanax papyriferus. The self-healing hydraulic seal of claim 2 , wherein the plant-based polysaccharide is selected from the group consisting of carrot fiber claim 2 , squash fiber claim 2 , yam fiber claim 2 , turnip fiber claim 2 , parsnip fiber claim 2 , coir fiber (coconut husk) claim 2 , flax fiber (herbaceous plant) claim 2 , rice paper plant fiber () claim 2 , palm fiber claim 2 , beet fiber claim 2 , apple fiber claim 2 , orange fiber claim 2 , and grapefruit fiber claim 2 , and mixtures and blends thereof.4. The self-healing hydraulic seal of claim 2 , wherein the base polymer is selected from 19-51% acrylonitrile butadiene rubber and the plant-based polysaccharide is carrot fiber.5. The self-healing hydraulic seal of claim 4 , wherein the water-swellable elastomeric composition further comprises a diffusion promoter and a fluid retaining agent claim 4 , wherein the diffusion promoter is selected from the group consisting of sodium acetate claim 4 , potassium acetate claim 4 , sodium formate claim 4 , potassium formate claim 4 , sodium triphosphate claim 4 , potassium triphosphate claim 4 , sodium polyphosphate claim 4 , potassium polyphosphate claim 4 , sodium carbonate claim 4 , potassium carbonate claim 4 , or ...

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Номер записи: 69
13-08-2020 дата публикации

Polymer Latex for Dip-Molding Applications

Номер: US20200255634A1
Автор: Abele Alexandra, Greaves Floyd, NG Thian Hong, Wei Zhenli, Wolters Dieter
Принадлежит:

The present invention relates to a polymer latex for dip-molding applications including: particles of a carboxylated conjugated diene nitrile latex polymer in combination or association with particles of a latex polymer including at least one oxirane-functional group, to the use of said polymer latex for the production of dip-molded articles or for coating or impregnating a substrate, to compounded compositions including said polymer latex, to a method for making dip-molded articles and to articles made by using said polymer latex. 1. A polymer latex for dip-molding applications comprising:(a) particles of a carboxylated conjugated diene nitrile latex polymer (a) obtainable by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising:15 to 99 wt.-% of conjugated dienes;1 to 80 wt.-% of monomers selected from ethylenically unsaturated nitrile compounds;0.05 to 10 wt.-% of ethylenically unsaturated acids and/or salts thereof;0 to 50 wt.-% of vinyl aromatic monomers; and0 to 65 wt.-% of alkyl esters of ethylenically unsaturated acids,the weight percentages being based on the total monomers in the mixture,in combination or association with(b) particles of a latex polymer (b) comprising at least one oxirane-functional group; whereinthe monomer composition of the latex polymer (a) is different from the monomer composition of the latex polymer (b).2. The polymer latex of claim 1 , whereinthe conjugated dienes are selected from butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene or combinations thereof;the ethylenically unsaturated nitrile compounds are selected from (meth)acrylonitrile, alpha-cyanoethyl acrylonitrile, fumaronitrile, alpha-chloronitrile or combinations thereof;the ethylenically unsaturated acids and salts thereof are selected from (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, ethylenically unsaturated sulfonic acids, ethylenically unsaturated ...

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Номер записи: 70
13-08-2020 дата публикации

TOUGHENED, LOW ODOR/LOW BLOOM CYANOACRYLATE COMPOSITIONS

Номер: US20200255693A1
Автор: Barnes Rory B., Burns Barry N., Cobo Isidro, Hersee Rachel, Phelan Marisa, Sadauskaite Viktorija, Tully Raymond, Ward Erner
Принадлежит:

This invention relates to cyanoacrylate-containing compositions that include (a) a beta-alkoxy cyanoacrylate component, (b) a cyanoacrylate component selected from the group consisting of 2-methylbutyl cyanoacrylate, isoamyl cyanoacrylate, 2-ethylhexyl cyanoacrylate, 2-pentyl cyanoacrylate, 3-methylpentyl cyanoacrylate, 2-ethylbutyl cyanoacrylate, 3,7-dimethyloctyl cyanoacrylate, and combinations thereof; and (c) a rubber toughening component. Cured products of the inventive cyanoacrylate compositions demonstrate improved toughness without an odor typically found with cyanoacrylate-containing compositions. 1. A cyanoacrylate composition , comprising:(a) a β-alkoxyalkyl cyanoacrylate component,(b) a cyanoacrylate component selected from the group consisting of 2-methylbutyl cyanoacrylate, isoamyl cyanoacrylate, 2-ethylhexyl cyanoacrylate, 2-pentyl cyanoacrylate, 3-methylpentyl cyanoacrylate, 2-ethylbutyl cyanoacrylate, 3,7-dimethyloctyl cyanoacrylate, and combinations thereof; and(c) a rubber toughening component.2. The composition according to claim 1 , wherein the β-alkoxyalkyl cyanoacrylate component is selected from β-methoxy ethyl cyanoacrylate claim 1 , β-ethoxy ethyl cyanoacrylate claim 1 , and combinations thereof.3. The composition according to claim 1 , wherein the rubber toughening component is selected from the group consisting of (a) reaction products of the combination of ethylene claim 1 , methyl acrylate and monomers having carboxylic acid cure sites claim 1 , (b) dipolymers of ethylene and methyl acrylate claim 1 , (c) vinylidene chloride-acrylonitrile copolymers claim 1 , (d) vinyl chloride/vinyl acetate copolymer claim 1 , (e) copolymers of polyethylene and polyvinyl acetate claim 1 , and combinations thereof.4. The composition according to claim 1 , wherein the rubber toughening component is a reaction product of the combination of ethylene claim 1 , methyl acrylate and monomers having carboxylic acid cure sites claim 1 , wherein the reaction ...

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Номер записи: 71
05-10-2017 дата публикации

LATEX COMPOSITION FOR DIP-FORMING INCLUDING CARBOXYLIC ACID MODIFIED-NITRILE BASED COPOLYMER LATEX AND DIP-FORMED ARTICLE PEREPARED THEREFROM

Номер: US20170283599A1
Автор: CHA Yu Jin, Han Jung Su, Kim Ji Hyun, Yeu Seung Uk
Принадлежит: LG CHEM, LTD.

The present invention relates to a latex composition for dip-forming including two different types of carboxylic acid modified-nitrile based copolymer latex, and a dip-formed article prepared therefrom having excellent durability for sweat, and having high tensile strength and elongation percentage. Accordingly, the latex composition for dip-forming has excellent tensile strength, elongation percentage, stress and durability, and is useful in industries requiring these, for example, a rubber glove industry and the like. 1. A latex composition for dip-forming comprising:a) carboxylic acid modified-nitrile based copolymer latex having a glass transition temperature of −30° C. to −5° C. and an average particle diameter of 100 nm to 200 nm, and including a reactive compound; andb) carboxylic acid modified-nitrile based copolymer latex having a glass transition temperature of −30° C. to −15° C. and an average particle diameter of 100 nm to 200 nm.2. The latex composition for dip-forming of claim 1 , wherein the composition includes the a) carboxylic acid modified-nitrile based copolymer latex and the b) carboxylic acid modified-nitrile based copolymer latex in a weight ratio of 3:7 to 8:2.3. The latex composition for dip-forming of claim 1 , wherein the a) carboxylic acid modified-nitrile based copolymer latex includes 0.1 parts by weight to 5 parts by weight of the reactive compound with respect to 100 parts by weight of a monomer mixture claim 1 , and the monomer mixture includes 40% by weight to 89% by weight of a conjugated diene-based monomer; 10% by weight to 50% by weight of an ethylenically unsaturated nitrile-based monomer; and 0.1% by weight to 10% by weight of an ethylenically unsaturated acid monomer claim 1 , andwherein the b) carboxylic acid modified-nitrile based copolymer latex includes 40% by weight to 89% by weight of a conjugated diene-based monomer; 10% by weight to 50% by weight of an ethylenically unsaturated nitrile-based monomer; and 0.1% by ...

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Номер записи: 72
04-10-2018 дата публикации

CROSSLINKABLE RUBBER COMPOSITION MANUFACTURING METHOD

Номер: US20180282492A1
Автор: FUKUMINE Yoshio
Принадлежит: ZEON CORPORATION

Provided is a method for producing a cross-linkable rubber composition, comprising: a first step of providing a carboxyl group-containing nitrile copolymer rubber (A) having an iodine value of 120 or less; a second step of mixing an acrylic rubber (b1) with an aromatic polyamine cross-linking agent (b2) to obtain a masterbatch (B); and a third step of mixing the carboxyl group-containing nitrile copolymer rubber (A) with the masterbatch (B). 1. A method for producing a cross-linkable rubber composition , comprising:a first step of providing a carboxyl group-containing nitrile copolymer rubber (A) having an iodine value of 120 or less;a second step of mixing an acrylic rubber (b1) with an aromatic polyamine cross-linking agent (b2) to obtain a masterbatch (B); anda third step of mixing the carboxyl group-containing nitrile copolymer rubber (A) with the masterbatch (B).2. The method for producing a cross-linkable rubber composition according to claim 1 , wherein the second step is a step of mixing the acrylic rubber (b1) with the aromatic polyamine cross-linking agent (b2) at a temperature higher than a melting point of the aromatic polyamine cross-linking agent (b2) by 10° C. or more.3. The method for producing a cross-linkable rubber composition according to claim 1 , wherein an amount of the masterbatch (B) mixed is 0.1 to 40 parts by weight in relation to 100 parts by weight of the carboxyl group-containing nitrile copolymer rubber (A).4. The method for producing a cross-linkable rubber composition according to claim 1 , wherein a mixing ratio between the acrylic rubber (b1) and the aromatic polyamine cross-linking agent (b2) claim 1 , the acrylic rubber (b1): the aromatic polyamine cross-linking agent (b2) claim 1 , is 20:80 to 90:10 by weight.5. The method for producing a cross-linkable rubber composition according to claim 1 , wherein the third step is a step of mixing the carboxyl group-containing nitrile copolymer rubber (A) with the masterbatch (B) and ...

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Номер записи: 73
22-10-2015 дата публикации

WATER SWELLABLE RUBBER COMPOSITION HAVING STABLE SWELLING PROPERTY AT HIGH TEMPERATURES

Номер: US20150299438A1
Автор: Choi Soobum, Justice Lawrence J.
Принадлежит: ZEON CHEMICALS L.P.

A water swellable rubber composition comprising (a) a non-water swellable base rubber, (b) an ethylene oxide based hydrophilic elastomer having from zero up to and including 20 mole % of a crosslinkable curable functional group, and (c) a water swellable non-elastomeric material. The composition has excellent water swell characteristics under prolonged exposure to high temperature and various electrolyte solutions (strongly saline as well as acid conditions) and is particularly suitable for oil field applications. When the ethylene oxide based hydrophilic elastomer (b) has from zero to less than 5 mole % of crosslinkable functional group, the amount of (b) is between about 30 parts and 300 parts by weight based on 100 parts by weight of the base rubber (a) and the amount of (c) is between about 20 parts and 200 parts by weight based on 100 parts by weight of the base rubber (a), the composition is characterized by good shape retention after undergoing constrained swell, as well as a high degree of constrained swell at elevated temperatures in different saline concentrations. 1. A water swellable rubber composition comprising:(a) 100 phr of a non-water swellable base rubber which is at least one selected from the group consisting of hydrogenated acrylonitrile-butadiene rubber (HNBR) and epichlorohydrin rubber,(b) 10-200 phr of a crosslinkable ethylene oxide based hydrophilic elastomer having an ethylene oxide content of least 65 mole %, and having at least one crosslinkable curable functional group, wherein one of said functional group is vinyl, and(c) 50-200 phr of a water swellable non-elastomeric material which is at least one selected from the group consisting of a partially neutralized/crosslinked polyacrylic acid salt and an organic acid salt.2. A water swellable rubber composition according to claim 1 , which comprises 20-180 phr of the crosslinkable ethylene oxide based hydrophilic elastomer (b).3. A water swellable rubber composition according to claim 1 , ...

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Номер записи: 74
13-10-2016 дата публикации

NITRILE GROUP-CONTAINING HIGHLY SATURATED COPOLYMER RUBBER COMPOSITION AND CROSS-LINKED RUBBER

Номер: US20160297955A1
Автор: INOUE Sayaka, NAKASHIMA Tomonori
Принадлежит: ZEON CORPORATION

A nitrile group-containing highly saturated copolymer rubber composition includes a nitrile group-containing highly saturated copolymer rubber (A) having α,β-ethylenically unsaturated nitrile monomer units and (meth)acrylic acid ester monomer units and having an iodine value of 120 or less and a polyether ester-based plasticizer (B) having structural unit made of three or more ether compounds which are successively bonded. A nitrile group-containing highly saturated copolymer rubber composition excellent in vulcanization speed and giving cross-linked rubber has excellent heat resistance and cold resistance. 1. A nitrile group-containing highly saturated copolymer rubber composition comprising a nitrile group-containing highly saturated copolymer rubber (A) having α ,β-ethylenically unsaturated nitrile monomer units and (meth)acrylic acid ester monomer units and having an iodine value of 120 or less , and a polyether ester-based plasticizer (B) having structural unit comprised of three or more ether compounds which are successively bonded.2. The nitrile group-containing highly saturated copolymer rubber composition according to wherein the polyether ester-based plasticizer (B) has a molecular weight of 600 to 5000.4. The nitrile group-containing highly saturated copolymer rubber composition according to wherein the polyether ester-based plasticizer (B) has a viscosity of 15 to 200 mPa·s/25° C. claim 1 , a solidification point of 10 to −20° C. claim 1 , and an SP value of 7 to 11 (cal/cm).5. The nitrile group-containing highly saturated copolymer rubber composition according to wherein a content of the polyether ester-based plasticizer (B) is 1 to 30 parts by weight with respect to 100 parts by weight of the highly saturated nitrile rubber (A).6. A cross-linkable rubber composition obtained by blending a cross-linking agent into the nitrile group-containing highly saturated copolymer rubber composition according to .7. A cross-linked rubber obtained by cross-linking ...

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Номер записи: 75
10-09-2020 дата публикации

METHOD FOR THE PRODUCTION OF SUPERABSORBERS

Номер: US20200283588A1
Автор: Bertha Sylvia, Catternan Tom, Funk Ruediger, Gruenewald Gerald, Peterson Monte Alan, Possemiers Karl, Stephan Oskar, Weismantel Matthias
Принадлежит:

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 ...

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Номер записи: 76
26-09-2019 дата публикации

RUBBER COMPOSITION AND SHAPED PRODUCT

Номер: US20190292356A1
Автор: KATADA Arinobu
Принадлежит: ZEON CORPORATION

Provided are a shaped product having excellent heat resistance and a rubber composition with which the shaped product can be formed. The rubber composition contains a rubber including an ethylenically unsaturated monomer unit having at least one carboxyl group, a compound having at least one amino group and an aromatic condensed ring structure including at least three rings, and one or more carbon nanotubes. The shaped product is obtained through shaping of the rubber composition. 1. A rubber composition comprising:a rubber including an ethylenically unsaturated monomer unit having at least one carboxyl group;a compound having at least one amino group and an aromatic condensed ring structure including at least three rings; andone or more carbon nanotubes.2. The rubber composition according to claim 1 , whereinthe compound is contained in a proportion of at least 0.5 parts by mass and not more than 5 parts by mass per 100 parts by mass of the rubber.3. The rubber composition according to or claim 1 , whereinthe compound is at least one selected from the group consisting of 2-aminoanthracene, 1-aminopyrene, 1,6-diaminopyrene, and 3-amino-9-ethylcarbazole.4. A shaped product obtained through shaping of the rubber composition according to . The present disclosure relates to a rubber composition and a shaped product, and, in particular, relates to a carbon nanotube-containing rubber composition and a shaped product obtained through shaping of the rubber composition.In recent years, composite materials in which carbon nanotubes (hereinafter, also referred to as “CNTs”) are compounded with an elastomer, such as a rubber, have been attracting interest as materials that have excellent heat resistance and mechanical properties.In one example, PTL 1 discloses a composite material having excellent processability and heat resistance that is a crosslinked rubber obtained through crosslinking of a crosslinkable rubber composition containing a rubber including a carboxyl group- ...

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Номер записи: 77
24-09-2020 дата публикации

ANTISTATIC GLOVES AND PROCESS FOR MAKING SAME

Номер: US20200299532A1
Автор: Chen Seong Fong, Low Chii Yih, Wong Wei Cheong
Принадлежит:

The present invention is directed to antistatic elastomeric articles and methods of making the same. The articles can be single layered or multilayered. The single layered articles possess desirable antistatic properties and desirable properties of comfort and feel. The multilayered articles have an outermost layer/surface that possesses desirable antistatic properties and an innermost layer/surface that exhibits desirable properties of comfort and feel. In preferred embodiments, the elastomeric articles are made form a nitrile/natural rubber blend. Articles of the present invention have antistatic properties measured as having a surface resistivity below about 10Ω/sq and a static decay time of less than about 60 seconds. 145-. (canceled)46. A process for making an antistatic multilayered elastomeric article having a first layer and a second layer comprising:a) preparing a first latex composition by mixing natural rubber latex with nitrile rubber latex, wherein the natural rubber latex in said first latex composition is in a lesser amount than the nitrile rubber latex in said first latex composition,b) preparing a second latex composition by mixing nitrile rubber latex with natural rubber latex, wherein the nitrile rubber latex in said second latex composition is in a lesser amount than the natural rubber latex in said second latex composition, andc) forming the first layer from said first latex composition and the second layer from said second latex composition.47. The process of claim 46 , wherein step a) further comprises mechanically mixing the natural rubber latex with the nitrile rubber latex claim 46 , and wherein step b) further comprises mechanically mixing the nitrile rubber latex with the natural rubber latex.48. The process of claim 47 , wherein step a) further comprises adjusting the first latex composition to a pH of about 9.5.49. The process of claim 47 , wherein step c) further comprises forming a first latex gel from the first latex composition and ...

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Номер записи: 78
26-11-2015 дата публикации

Cross-linking of carboxylated nitrile rubbers by means of cross-linking systems containing resol

Номер: US20150337124A1
Автор: Achim Welle, Hans Magg
Принадлежит: LANXESS DEUTSCHLAND GMBH

The invention relates to vulcanizable compositions based on carboxylated nitrile rubbers, at least one resol crosslinker, at least one silicatic filler and at least one specific silane, to a process for preparing these vulcanizable compositions, to a process for producing vulcanizates therefrom and to the vulcanizates thus obtained. The vulcanizates feature good mechanical and dynamic properties and an excellent compression set.

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Номер записи: 79
16-11-2017 дата публикации

Nitrile rubber composition, latex composition of highly saturated nitrile rubber, and cross-linked rubber

Номер: US20170327672A1
Автор: Sayaka INOUE, Tomonori Nakashima
Принадлежит: Zeon Corp

A nitrile rubber composition comprising a highly saturated nitrile rubber (A) containing α,β-ethylenically unsaturated nitrile monomer units in a ratio of 8 to 60 wt % and having an iodine value of 120 or less and an alkylated phenol compound (B), wherein a ratio of content of the alkylated phenol compound (B) with respect to a total of the highly saturated nitrile rubber (A) and the alkylated phenol compound (B) is 0.01 to 1 wt %, and a difference (η2−η1) between a plasticity number η2 after storage at 70° C. for 7 days in a state of an aqueous dispersion by being dispersed in water and a plasticity number η1 before the storage is 12 or less is provided.

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Номер записи: 80
15-11-2018 дата публикации

RUBBER CROSSLINKED MATERIAL

Номер: US20180327517A1
Автор: MOSAKI Shiho
Принадлежит: ZEON CORPORATION

A cross-linked rubber prepared by cross-linking a nitrile rubber composition including: a carboxyl group-containing highly saturated nitrile rubber containing 5 to 60 wt % of an α,β-ethylenically unsaturated nitrile monomer unit, and an α,β-ethylenically unsaturated monocarboxylic acid ester monomer unit, and having an iodine value of 120 or less; a surface treated silicate; and a polyamine-based cross-linking agent wherein a content is 0.1 to 20 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber, wherein when the rubber is subjected to a compression stress relaxation test wherein it is maintained at 150° C. while being compressed by 25%, the time until which the compression stress comes to be 50% of the initial compression stress at the start of the test, the compression stress after 30 minutes from the start of the test, is 300 hours or more. 1. A cross-linked rubber prepared by cross-linking a nitrile rubber composition , the nitrile rubber composition comprising: a carboxyl group-containing highly saturated nitrile rubber (a) containing 5 to 60 wt % of an α ,β-ethylenically unsaturated nitrile monomer unit , and an α ,β-ethylenically unsaturated monocarboxylic acid ester monomer unit , and having an iodine value of 120 or less; a surface treated silicate (b); and a polyamine-based cross-linking agent (c) , wherein a content of the polyamine-based cross-linking agent (c) is 0.1 to 20 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber (a) , whereinwhen the cross-linked rubber is subjected to a compression stress relaxation test in which the cross-linked rubber is maintained at 150° C. in a state of being compressed by 25%, the time until which the compression stress comes to be 50% of the initial compression stress at the start of the compression stress relaxation test, the compression stress after 30 minutes from the start of the ...

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Номер записи: 81
30-11-2017 дата публикации

RUBBER OR ELASTOMER COMPOSITIONS AND PROCESSES FOR THEIR MANUFACTURING

Номер: US20170342240A1
Автор: Das Amit, HEINRICH Gert, HONG Hai Le, JURK Rene, NATARAJAN Tamil Selvan, STOECKELHUBER Klaus Werner, WIESSNER Sven
Принадлежит: LEIBNIZ-INSTITUT FUER POLYMERFORSCHUNG DRESDEN E.V.

The present invention is concerned with the field of polymer chemistry and relates to rubber or elastomer compositions as can be used for vehicle tires, and to a method for the production of the rubber or elastomer compositions. 1. Rubber or elastomer compositions containing at least one rubber or elastomer matrix and at least 20 to 150 phr of a phase change material in solid or liquid form , wherein the phase change material has a particle size of ≦1 μm , and wherein one or more auxiliary materials can be present.2. The rubber or elastomer compositions according to claim 1 , wherein the phase change material has a particle size of 0.01-0.5 μm.3. The rubber or elastomer compositions according to claim 1 , wherein the phase change material is present at 30 to 80 phr.4. The rubber or elastomer compositions according to claim 1 , wherein the phase change material is present in the matrix in a homogeneously distributed manner or in a graduated distribution.5. The rubber or elastomer compositions according to claim 1 , wherein the matrix was produced from at least one natural rubber and/or at least one synthetic rubber claim 1 , advantageously styrene-butadiene rubber (SBR) claim 1 , butadiene rubber (BR) claim 1 , butyl rubber (IIR) claim 1 , acrylonitrile-butadiene rubber (NBR) claim 1 , carboxylated NBR claim 1 , hydrogenated NBR claim 1 , epichlorohydrin-ethylene oxide rubber (GECO) claim 1 , acrylic rubber (ACM) claim 1 , ethylene-propylene-diene rubber (EPDM) claim 1 , polyurethane rubber (PU) claim 1 , fluorinated rubber (FKM) and/or silicone rubber (VMQ) claim 1 , or of a mixture of the rubbers.6. The rubber or elastomer compositions according to claim 1 , wherein water claim 1 , one or more non-paraffins claim 1 , one or more inorganic salt hydrates claim 1 , one or more eutectic alloys claim 1 , one or more metals and/or one or more metal compounds are present as phase change material.7. The rubber or elastomer compositions according to claim 6 , wherein ester ...

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Номер записи: 82
30-11-2017 дата публикации

CROSS-LINKABLE NITRILE RUBBER COMPOSITION AND CROSS-LINKED RUBBER PRODUCT

Номер: US20170342241A1
Автор: FUKUMINE Yoshio
Принадлежит: ZEON CORPORATION

A cross-linkable nitrile rubber composition contains a carboxyl group-containing highly saturated nitrile rubber, a resin, and a polyamine cross-linking agent. The content of the carboxyl group-containing highly saturated nitrile rubber is 30 parts by weight or more with respect to 100 parts by weight of the total amount of the carboxyl group-containing highly saturated nitrile rubber and the resin. The cross-linkable nitrile rubber composition is obtained by performing kneading at a temperature equal to or higher than the melting point of the resin. 1. A cross-linkable nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber , a resin , and a polyamine cross-linking agent , whereina content of the carboxyl group-containing highly saturated nitrile rubber is 30 parts by weight or more with respect to 100 parts by weight of a total amount of the carboxyl group-containing highly saturated nitrile rubber and the resin, andthe cross-linkable nitrile rubber composition is obtained by performing kneading at a temperature equal to or higher than a melting point of the resin.2. (canceled)3. The cross-linkable nitrile rubber composition according to claim 1 , whereina content of the carboxyl group-containing highly saturated nitrile rubber is 60 parts by weight or more with respect to 100 parts by weight of a total amount of the carboxyl group-containing highly saturated nitrile rubber and the resin.4. The cross-linkable nitrile rubber composition according to claim 1 , wherein the resin is at least one selected from a group consisting of a polyester resin and a polyamide resin.5. The cross-linkable nitrile rubber composition according to claim 4 , wherein the resin is the polyamide resin.6. A cross-linked rubber product obtained by cross-linking the cross-linkable nitrile rubber composition according to .7. The cross-linked rubber product according to claim 6 , wherein the cross-linked rubber product has 100% tensile stress of 10 MPa ...

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Номер записи: 83
30-11-2017 дата публикации

DIP-FORMING LATEX COMPOSITION AND DIP-FORMED ARTICLE

Номер: US20170342242A1
Автор: KATO Shinji
Принадлежит: ZEON CORPORATION

A latex for dip forming and a sulfur-based crosslinking agent, and has a pH of 9.5-11, the latex containing a copolymer having 40-80% by weight of conjugated diene monomer units (A) that contain a butadiene unit and an isoprene unit, 10-45% by weight of ethylenically unsaturated nitrile monomer units (B), and 2-15% by weight of ethylenically unsaturated acid monomer units (C), the ratio between the butadiene unit content and the isoprene unit content being 40:60 to 95:5 expressed in terms of weight. 1. A dip-forming latex composition comprising:a dip-forming latex containing a copolymer containing 40 to 80% by weight of conjugated diene monomer units (A) containing a butadiene unit and an isoprene unit, 10 to 45% by weight of ethylenically unsaturated nitrile monomer units (B), and 2 to 15% by weight of ethylenically unsaturated acid monomer units (C), the conjugated diene monomer units (A) containing the butadiene unit and the isoprene unit at a weight ratio of 40:60 to 95:5 (butadiene unit:isoprene unit); anda sulfur crosslinking agent, whereinthe dip-forming latex composition has a pH of 9.5 to 11.2. The dip-forming latex composition according to claim 1 , wherein the conjugated diene monomer units (A) are formed only of a butadiene unit and an isoprene unit.3. The dip-forming latex composition according to claim 1 , wherein the ethylenically unsaturated nitrile monomer units (B) are acrylonitrile units.4. The dip-forming latex composition according to claim 1 , wherein the ethylenically unsaturated acid monomer units (C) are ethylenically unsaturated monocarboxylic acid monomer units.5. The dip-forming latex composition according to claim 1 , wherein the ethylenically unsaturated acid monomer units (C) are methacrylic acid units.6. The dip-forming latex composition according to claim 1 , wherein the copolymer contains other monomer units (D) other than the conjugated diene monomer units (A) claim 1 , the ethylenically unsaturated nitrile monomer units (B) claim ...

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Номер записи: 84
30-11-2017 дата публикации

Dip-formed article

Номер: US20170342243A1
Автор: Shinji Kato
Принадлежит: Zeon Corp

Disclosed is a dip-formed article obtained by dip-molding a latex composition for dip-forming, which contains a crosslinking agent and a latex for dip-forming containing a copolymer composed of 40-80% by weight of conjugated diene monomer units (A) containing an isoprene unit, 20-45% by weight of ethylenically unsaturated nitrile monomer units (B), and 2-15% by weight of ethylenically unsaturated acid monomer units (C), and having a weight ratio of butadiene unit content to isoprene unit content that falls within the range of 60:40 to 100:0. Tear strength is at least 50 N/mm, tensile strength is at least 25 MPa, and oil swelling rate does not exceed 5%.

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Номер записи: 85
15-12-2016 дата публикации

STATOR COMPOUND HAVING AN NBIR TERPOLYMER ELASTOMERIC BASE AND STATORS AND DOWNHOLE MOTORS USING THE SAME

Номер: US20160362543A1
Автор: Kyker Gary Stephen
Принадлежит:

A stator compound including an acrylonitrile butadiene isoprene rubber (NBIR) terpolymer elastomeric base. 1. A stator compound including an acrylonitrile butadiene isoprene rubber (NBIR) terpolymer elastomeric base.2. (canceled)3. The stator compound of claim 1 , wherein the NBIR terpolymer elastomeric base comprises a carboxylated acrylonitrile butadiene isoprene rubber (XNBIR) terpolymer elastomeric base.4. The stator compound of claim 1 , further comprising at least one of a high reinforcing carbon black and a semi-reinforcing carbon black selected such that the stator compound has a tensile strength from about 800 to about 2000 psi claim 1 , an elongation from about 125 to about 300% claim 1 , and a 25% modulus from about 250 to about 600 psi claim 1 , when measured at 121° C.5. The stator compound of claim 4 , wherein the high reinforcing carbon black has a surface area of about 80 to about 250 (Iodine # mg/g) and a structure of about 70 to about 178 (DBP Absorption-cc/100 g).6. (canceled)7. The stator compound of claim 4 , wherein the semi-reinforcing carbon black has a surface area of about 20 to about 50 (Iodine # mg/g) and a structure of about 60 to about 125 (DBP Absorption-cc/100 g).8. The stator compound of claim 1 , wherein the NBIR terpolymer elastomeric base has a Mooney viscosity range of about 30 to about 85 and an acrylonitrile content range of about 28 to about 50.9. (canceled)10. The stator compound of claim 1 , further comprising at least one plasticizer selected from the group consisting of polymeric and ester plasticizers.11. A method of making a stator compound claim 1 , comprising:during a first mixing stage, mixing a high reinforcing carbon black with an acrylonitrile butadiene isoprene rubber (NBIR) terpolymer elastomeric base at a temperature below about 300 degrees Fahrenheit without curing agents to produce a mixture;allowing the mixture to cool to ambient temperature; andduring a second mixing stage, mixing curing agents into the ...

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Номер записи: 86
24-12-2015 дата публикации

NITRILE RUBBER COMPOSITION AND CROSS-LINKED RUBBER

Номер: US20150368447A1
Автор: KATADA Arinobu
Принадлежит:

A nitrile rubber composition which contains a carboxyl group-containing nitrile rubber (A), a liquid nitrile rubber (B), and a polyamine-based cross-linking agent (C) is provided. In the nitrile rubber composition of the present invention, preferably the carboxyl group-containing nitrile rubber (A) has an iodine value of 120 or less. Further, in the nitrile rubber composition of the present invention, preferably the carboxyl group-containing nitrile rubber (A) contains α,β-ethylenically unsaturated nitrile monomer units 5 to 60 wt %, carboxyl group-containing monomer units 0.1 to 20 wt %, and conjugated diene monomer units 15 to 94.9 wt %. 1. A nitrile rubber composition containing a carboxyl group-containing nitrile rubber (A) , a liquid nitrile rubber (B) , and a polyamine-based cross-linking agent (C).2. The nitrile rubber composition as set forth in claim 1 , wherein said carboxyl group-containing nitrile rubber (A) has an iodine value of 120 or less.3. The nitrile rubber composition as set forth in claim 1 , wherein said carboxyl group-containing nitrile rubber (A) contains α claim 1 ,β-ethylenically unsaturated nitrile monomer units 5 to 60 wt % claim 1 , carboxyl group-containing monomer units 0.1 to 20 wt % claim 1 , and conjugated diene monomer units 15 to 94.9 wt %.4. The nitrile rubber composition as set forth in claim 1 , wherein a content of said liquid nitrile rubber (B) is 1 to 50 parts by weight with respect to 100 parts by weight of said carboxyl group-containing nitrile rubber (A).5. The nitrile rubber composition as set forth in claim 1 , wherein said liquid nitrile rubber (B) contains α claim 1 ,β-ethylenically unsaturated nitrile monomer units 10 to 60 wt % and conjugated diene monomer units 40 to 90 wt %.6. The nitrile rubber composition as set forth in claim 1 , further containing a basic cross-linking accelerator.7. A cross-linked rubber obtained by cross-linking the nitrile rubber composition as set forth in . The present invention relates ...

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Номер записи: 87
24-12-2015 дата публикации

RUBBER COMPOSITION FOR HOSES, AND HOSE

Номер: US20150368448A1
Автор: KAWAI Atsushi, SUZUKI Takahiko, TSUNENISHI Yohei
Принадлежит: BRIDGESTONE CORPORATION

Rubber composition for hoses, containing 80 parts by mass or more of an acrylonitrile butadiene rubber (NBR) in 100 parts by mass of the rubber component, while containing 1-4 parts by mass of a phenolic resin and 1-5 parts by mass of a thiuram compound represented by general formula (1) and serving as a vulcanization accelerator, respectively per 100 parts by mass of the rubber component. This rubber composition is capable of achieving good adhesion to a brass-plated wire and is capable of solving the problems of environmental loads; and this rubber composition is particularly suitable for use as an inner tube rubber for hydraulic pressure hoses. 2. The rubber composition for hoses according to which includes claim 1 , as the thiuram compound of general formula (1) claim 1 , one or both of tetrabenzylthiuram disulfide and tetrakis(2-ethylhexyl)thiuram disulfide.3. The rubber composition for hoses according to which includes from 1 to 5 parts by mass of bismaleimide.4. The rubber composition for hoses according to which includes from 1.5 to 3 parts by mass of sulfur.5. The rubber composition for hoses according to which includes from 0.5 to 10 parts by mass of zinc oxide (zinc white).6. The rubber composition for hoses according to which is a rubber composition that forms claim 1 , in a rubber hose having a reinforcing layer made of brass-plated wire claim 1 , a rubber layer which bonds directly with the brass-plated wire of the reinforcing layer.7. A hose comprising at least an inner tube rubber and a reinforcing layer made of brass-plated wire that is formed over the inner tube rubber claim 1 , wherein the inner tube rubber is formed of the rubber composition according to .8. The hose according to which is a hydraulic hose that is filled with a hydraulic fluid for hydraulically powered equipment. The present invention relates to a rubber composition which has excellent adhesion to brass-plated wire and is particularly suitable for use as an inner tube rubber in ...

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Номер записи: 88
14-12-2017 дата публикации

LATEX FOR FRICTION MEMBER USE AND FRICTION MEMBER

Номер: US20170355854A1
Автор: INOUE Sayaka, NAKASHIMA Tomonori
Принадлежит: ZEON CORPORATION

A latex for friction member use including rubber particles comprised of a carboxyl group-containing highly saturated nitrile rubber containing α,β-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt % and having an iodine value of 120 or less, wherein a difference Δd (Δd=d90−d50) between a volume cumulative 90% particle size (d90) of the rubber particles and volume cumulative 50% particle size (d50) of the rubber particles which are measured by a light scattering method is 0.0240 μm or more is provided. 1. A latex for friction member use comprising rubber particles comprised of a carboxyl group-containing highly saturated nitrile rubber containing α ,β-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt % and having an iodine value of 120 or less ,wherein a difference Δd (Δd=d90−d50) between a volume cumulative 90% particle size (d90) of the rubber particles and volume cumulative 50% particle size (d50) of the rubber particles which are measured by a light scattering method is 0.0240 μm or more.2. The latex for friction member use according to claim 1 , wherein the carboxyl group-containing highly saturated nitrile rubber 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 90 wt % of conjugated diene monomer units (including hydrogenated ones).3. The latex for friction member use according to claim 2 , wherein the carboxyl group-containing monomer units are α claim 2 ,β-ethylenically unsaturated monocarboxylic acid monomer units.4. A latex composition for friction member use comprising the latex for friction member use according to and a thermosetting resin.5. The latex composition for friction member use according to claim 4 , wherein the thermosetting resin is one or more types selected from an epoxy resin and phenol resin.6. The latex composition for friction member use according to claim 4 , ...

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Номер записи: 89
05-11-2020 дата публикации

Rubber composition and rubber crosslinked product

Номер: US20200347208A1
Автор: Yoshio Fukumine
Принадлежит: Zeon Corp

A rubber composition includes a carboxyl group-containing nitrile rubber of which iodine value is 120 or less, a polyetherester plasticizer, and a metallic compound, wherein an amount of stearic acid adsorbed by the metallic compound is 80 mg/g or more and 300 mg/g or less.

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Номер записи: 90
26-12-2019 дата публикации

NANOPARTICLE FILLERS AND METHODS OF MIXING INTO ELASTOMERS

Номер: US20190389992A1
Автор: David Michael C., Hergenrother William L., Kiridena Waruna C.B., Pawlow James H., Quinn Jeffrey D., Robertson Christopher G., Ulmer James D.
Принадлежит:

A nanoparticle includes a copolymer comprising a vinyl-aromatic monomer and a heterocyclic monomer. The copolymer is crosslinked with a multifunctional crosslinking agent polymerizable through an addition reaction. A nanoparticle and elastomer composition is disclosed. Several methods of mixing heterocyclic and non-heterocyclic monomer nanoparticles into an elastomer are also disclosed. These methods include mixing in a multi-elements static mixer and an intermeshing mixer with venting, among others. 1. A polymeric composition comprising:nanoparticles having a polymeric core comprising vinyl-aromatic mono-vinyl monomer contributed units crosslinked with a multifunctional crosslinking agent that is polymerizable through an addition reaction;the polymeric core being essentially free of units of unsaturation;the polymeric core having a weight average particle diameter of about 10 nanometers to about 500 nanometers as determined by field flow fractionation on a sample swollen in THF solvent; anda latex elastomer having a number average molecular weight of at least about 150 kg/mol.2. The polymeric composition of claim 1 , wherein the nanoparticles are present in a volume fraction of the polymeric composition of about 0.3 to about 0.5.3. The polymeric composition of claim 1 , wherein the nanoparticles further comprise heterocyclic monomer contributed units.4. The polymeric composition of claim 1 , wherein the nanoparticles are present in a volume fraction of the composition of about 0.4 to about 0.5.5. The polymeric composition of claim 1 , wherein the nanoparticles have a weight average diameter of about 10 to about 500 nm as determined by field flow fractionation in THF.6. The polymeric composition of claim 1 , wherein the nanoparticles include about 0.1 to about 30 weight percent of a heterocyclic monomer contributed unit.7. The polymeric composition of claim 6 , wherein the multifunctional crosslinking agent is included in a weight equal to about 0.1 to about 20 ...

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Номер записи: 91
26-12-2019 дата публикации

All temperature water borne sealant

Номер: US20190390044A1
Автор: Ali N. Rashid
Принадлежит: Red Devil Inc

A wide temperature water borne sealant that can be applied at low temperatures. The sealant can be a latex sealant composition including at least one latex polymer, at least one freeze thaw stabilizer, and at least one peptone or at least one additive derived from a peptone. The latex polymer can be an acrylic latex polymer with a Glass Transition Temperature (Tg) of 0° C. or less. The peptone can be enzymatic hydrolysate. The sealant can remain pliable at low temperatures making it ideal for applications that require flexibility at low temperatures its' rheology and viscosity are such that it can be applied at temperatures below 0° C. The low Tg latex assures that the sealant will remain permanently flexible and non-tacky when cured, and the peptone provides the sealant with the means to prevent the water from freezing down to approximately −20° C.

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Номер записи: 92
26-12-2019 дата публикации

Crosslinkable rubber composition and crosslinked rubber product

Номер: US20190390045A1
Автор: Shiho MOSAKI, Yoshio Fukumine
Принадлежит: Zeon Corp

A crosslinkable rubber composition includes a carboxyl group-containing highly saturated nitrile copolymer rubber, and silica treated with silicone oil.

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Номер записи: 93
24-12-2020 дата публикации

SEALING MEMBER

Номер: US20200399451A1
Автор: Kawano Yuji
Принадлежит: JTEKT CORPORATION

A sealing member includes a sliding portion made of a vulcanized rubber composition. The rubber composition includes a carboxyl-containing acrylic rubber, a silica, and a glass fiber. A content of the silica is 25 to 100 parts by weight per 100 parts by weight of the carboxyl-containing acrylic rubber. 1. A sealing member , comprising:a sliding portion made of a vulcanized rubber composition, wherein:the rubber composition includes a carboxyl-containing acrylic rubber, a silica, and a glass fiber; anda content of the silica is 25 to 100 parts by weight per 100 parts by weight of the carboxyl-containing acrylic rubber.2. The sealing member according claim 1 , wherein a pH of the silica is 8 or more and 12 or less.3. The sealing member according to claim 1 , wherein a pH of the silica is 10 or more and 12 or less.4. The sealing member according to claim 1 , wherein in the rubber composition claim 1 , a content of the glass fiber is 20 to 40 parts by weight per 100 parts by weight of the carboxyl-containing acrylic rubber.5. The sealing member according to claim 2 , wherein in the rubber composition claim 2 , a content of the glass fiber is 20 to 40 parts by weight per 100 parts by weight of the carboxyl-containing acrylic rubber.6. The sealing member according to claim 3 , wherein in the rubber composition claim 3 , a content of the glass fiber is 20 to 40 parts by weight per 100 parts by weight of the carboxyl-containing acrylic rubber.7. The sealing member according to claim 1 , wherein a content of the silica is 30 to 80 parts by weight per 100 parts by weight of the carboxyl-containing acrylic rubber.8. The sealing member according to claim 1 , wherein a content of the silica is 45 to 65 parts by weight per 100 parts by weight of the carboxyl-containing acrylic rubber. This application claims priority to Japanese Patent Application No. 2019-113607 filed on Jun. 19, 2019, incorporated here by reference in its entirety.The present disclosure relates to a sealing ...

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Номер записи: 94
25-08-2020 дата публикации

Antistatic gloves and process for making same

Номер: US10752798B2
Автор: Chii Yih Low, Seong Fong Chen, Wei Cheong Wong
Принадлежит: Allegiance Corp

The present invention is directed to antistatic elastomeric articles and methods of making the same. The articles can be single layered or multilayered. The single layered articles possess desirable antistatic properties and desirable properties of comfort and feel. The multilayered articles have an outermost layer/surface that possesses desirable antistatic properties and an innermost layer/surface that exhibits desirable properties of comfort and feel. In preferred embodiments, the elastomeric articles are made form a nitrile/natural rubber blend. Articles of the present invention have antistatic properties measured as having a surface resistivity below about 1014 Ω/sq and a static decay time of less than about 60 seconds.

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Номер записи: 95
10-06-1986 дата публикации

Antistatic composition and articles made therefrom

Номер: US4594367A
Автор: Geissel Francis A., John Rys-Sikora, William W. Alexander
Принадлежит: Bata Ltd

An antistatic polymer blend composition and articles made therefrom are disclosed. The composition comprises, based on parts by weight: (a) polyvinyl chloride: 100 parts; (b) carboxylated nitrile terpolymer: 30-40 parts; (c) nonionic antistatic agent: 5-8 parts; (d) metallic stabilizers: 2-5 parts; (e) epoxidized oil: 5-10 parts; (f) primary plasticizer: 50-90 parts; and (g) lubricant: 1-2 parts. A method of protection against the effects or build up of antistatic electricity employing articles made from the composition of the present invention is also disclosed.

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Номер записи: 96
22-01-2015 дата публикации

Elastomeric film-forming compositions and articles made from the elastomeric film

Номер: WO2015006807A1
Автор: Khon Pu Foo, Kumaresan PRABHAKARAN
Принадлежит: SATCHELL, Jacqueline, SKINPROTECT CORPORATION SDN BHD

The invention relates to an elastomeric film-forming composition comprising (a) a copolymer formed from monomers consisting of chlorobutadiene and an ethylenically unsaturated carboxylic acid or ester, and (b) one or more cross-linking agents. The invention also relates to dipped articles, gloves, methods of manufacture and uses involving the composition.

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Номер записи: 97
22-01-2015 дата публикации

Elastomeric film-forming compositions and articles made from the elastomeric film

Номер: WO2015006808A1
Автор: Khon Pu Foo, Kumaresan PRABHAKARAN
Принадлежит: SATCHELL, Jacqueline, SKINPROTECT CORPORATION SDN BHD

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.

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Номер записи: 98
28-05-1996 дата публикации

Photocurable resin composition for the preparation of a printed wiring board

Номер: US5521053A
Автор: Fumio Shiratori, Hiroyoshi Oomika, Hisao Narahara, Minoru Iizuka, Nobuo Ikeda, Tatsuo Yamaguchi, Toshiaki Inomata
Принадлежит: Nippon Petrochemicals Co Ltd

A photocurable resin composition comprising (a) 100 parts by weight of a modified resin prepared by reacting an α,β-unsaturated dicarboxylic acid anhydride adduct having a softening point ranging from 70° to 200° C. and derived from a conjugated diene polymer or copolymer having a number average molecular weight of 500 to 5000 and a vinyl group content of 50 mole % or above, with an α,β-unsaturated monocarboxylic acid ester having a specific alcoholic hydroxy group to open at least 10 mole % of the acid anhydride rings present in the adduct, (b) inorganic or organic powder having an average particle diameter of not larger than 5 μm or inorganic powder grafted with a hydrocarbon residue, and (c) a photopolymerization initiator.

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Номер записи: 99
14-02-2008 дата публикации

Thermosetting Resin Composition, Thermosetting Film, Cured Product of Those, and Electronic Component

Номер: US20080039585A1
Автор: Hirofumi Gotou, Shin-ichiro Iwanaga, Takashi Nishioka, Tsunemitsu Miyata
Принадлежит: JSR Corp

A thermosetting resin composition of the present invention contains an epoxy resin (A), a crosslinked diene-based rubber (B) in which the content of bonded acrylonitrile is less than 10 wt %, and a curing agent (D) and/or a curing catalyst (E). A cured product obtained by curing the thermosetting resin composition is excellent in properties such as electric insulation properties and electrical properties.

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Номер записи: 100