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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 2446. Отображено 100.
09-01-2014 дата публикации

Polychloroprene latex, rubber composition and dip-molded article

Номер: US20140011936A1
Автор: Hiroyuki Yashima, Ikuka Hashimoto, Takeo Mori
Принадлежит: Denki Kagaku Kogyo KK

Provided is a polychloroprene latex that shows favorable low-temperature stability without deterioration in the rubber agglutinating property during production of the dip-molded article, a rubber composition, and a dip-molded article, prepared by using the same. Prepared is a polychloroprene latex of a chloroprene copolymer obtained by polymerization of raw monomers at least containing chloroprene and 2,3-dichloro-1,3-butadiene, which is dispersed in water, wherein the 2,3-dichloro-1,3-butadiene content in the raw monomers is controlled to 1 to 30 mass % and the potassium ion content is adjusted to 0.7 to 1.5 parts by mass and the sodium ion content to 0.2 part or less by mass with respect to 100 parts by mass of the solid matter. In addition, a metal oxide: 1 to 10 parts by mass, sulfur: 0.1 to 3 parts by mass, an aging inhibitor: 0.1 to 5 parts by mass and a surfactant: 0.1 to 10 parts by mass, respectively with respect to 100 parts by mass of the solid matter, were added to the chloroprene latex, to give a rubber composition.

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Номер записи: 1
04-01-2018 дата публикации

METHOD FOR PRODUCING RUBBER COMPOSITION AND RUBBER COMPOSITION

Номер: US20180002494A1
Автор: KAWAMOTO Keiichi, NIIHARA Kenichi, Noguchi Toru, Ueki Hiroyuki
Принадлежит:

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

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Номер записи: 2
07-01-2021 дата публикации

Transmission V-Belt

Номер: US20210003195A1
Автор: Nashiro Tsuyoshi, Takaba Susumu, Yanagihara Kazuhito
Принадлежит: MITSUBOSHI BELTING LTD.

A power transmission V-belt includes a tension member, an adhesion rubber layer in which at least part of the tension member is embedded, and a tension rubber layer and a compression rubber layer stacked via the adhesion rubber layer. A rubber hardness of the tension rubber layer is smaller than a rubber hardness of the compression rubber layer. In the adhesion rubber layer, a rubber hardness on a tension rubber layer side relative to the tension member is smaller than a rubber hardness on a compression rubber layer side. 1. A power transmission V-belt comprising a tension member , an adhesion rubber layer in which at least part of the tension member is embedded , and a tension rubber layer and a compression rubber layer stacked via the adhesion rubber layer ,wherein a rubber hardness of the tension rubber layer is smaller than a rubber hardness of the compression rubber layer, andin the adhesion rubber layer, a rubber hardness on a tension rubber layer side relative to the tension member is smaller than a rubber hardness on a compression rubber layer side.2. The power transmission V-belt according to claim 1 , having a thickness of from 6.5 to 8.5 mm.3. The power transmission V-belt according to claim 1 , wherein the rubber hardness of the adhesion rubber layer is from 74 to 85° and in the adhesion rubber layer claim 1 , a difference in rubber hardness between the tension rubber layer side and the compression rubber layer side is from 2 to 12°.4. The power transmission V-belt according to claim 1 , wherein the adhesion rubber layer is formed of a plurality of rubber layers claim 1 , a rubber hardness of a first adhesion rubber layer put into contact with the tension rubber layer is from 74 to 82° claim 1 , a rubber hardness of a second adhesion rubber layer put into contact with the compression rubber layer is from 77 to 85° claim 1 , and a difference in rubber hardness between the first adhesion rubber layer and the second adhesion rubber layer is from 2 to 10°.5. ...

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Номер записи: 3
03-01-2019 дата публикации

CHARGING ROLLER, AND METHOD OF PRODUCING THE SAME

Номер: US20190004447A1
Автор: SUZUKI Daijiro
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

An inventive charging roller () includes a roller body () which is formed of a crosslinked product of a rubber composition containing a rubber component including 30 to 70 parts by mass of GECO, 15 to 60 parts by mass of IR and not less than 1 part by mass of SBR and/or NBR based on 100 parts by mass of the overall rubber component and has an outer peripheral surface () finished in a finish-polished surface. An inventive production method includes the steps of: forming a roller body () from the crosslinked product of the rubber composition described above; and wet-polishing or mirror-polishing an outer peripheral surface () of the roller body () into a finish-polished surface. 3. The charging roller according to claim 1 , further comprising an oxide film provided in the outer peripheral surface.4. The charging roller according to claim 2 , further comprising an oxide film provided in the outer peripheral surface.7. The charging roller production method according to claim 5 , further comprising the step of forming an oxide film in the outer peripheral surface by irradiating the outer peripheral surface with ultraviolet radiation. The present invention relates to a charging roller to be used in an electrophotographic image forming apparatus, and to a method of producing the same.In an electrophotographic image forming apparatus such as a laser printer, an electrostatic copying machine, a plain paper facsimile machine or a printer-copier-facsimile multifunction machine, a charging roller is used for uniformly electrically charging a surface of a photoreceptor body.The charging roller typically includes a roller body having a single layer structure or a multilayer structure including a layer produced, for example, by preparing a semiconductive rubber composition containing an ion conductive rubber (e.g., epichlorohydrin rubber) as a rubber component, forming the semiconductive rubber composition into a tubular body and then crosslinking the rubber component of the ...

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Номер записи: 4
12-01-2017 дата публикации

EPOXIDISED NATURAL RUBBER-BASED BLEND WITH REVERSIBLE ELECTRICAL BEHAVIOUR

Номер: US20170009029A1
Автор: Kok Chong Yong
Принадлежит: LEMBAGA GETAH MALAYSIA

Epoxidised natural rubber [ENR] based vulcanised-blends with two different types of electrical conductive filler (i.e. conductive grade-carbon black and intrinsically electrical conductive polymer) may be produced respectively by using either internal mechanical mixing method or open milling method or the combination of the two methods. All these ENR based vulcanised-blends show high consistent reversible electrical behaviour under the tensile straining process. They also exhibit useful mechanical properties with tensile strengths up to 28.0 MPa, elongations at break up to 800.0% and Dunlop rebound resiliencies up to 55.0%. The lower the rebound resilience, the better the damping property and shock absorption ability for the ENR based vulcanised-blends. As a result, these ENR based vulcanised-blends are ideal to be used for manufacturing flexible sensors that may correspond to the tensile straining process. 1. An epoxidised natural rubber (ENR) based vulcanised blend for flexible sensor manufacturing or application comprising; ENR , electrically conductive fillers and vulcanisation agents.2. The ENR based blend according to claim 1 , wherein the blend composition ranges from;50.0 to 99.0 p.p.h.r. of ENR;1.0 to 50.0 p.p.h.r. of electrically conductive fillers;0.1 to 10.0 p.p.h.r. of vulcanisation agent with a purity level up to 100.0 wt %.3. The ENR based blend according to claim 1 , wherein the blend selectively comprising:0 to 10.0 p.p.h.r. of vulcanisation accelerators with a purity level up to 100.0 wt %;0 to 12.5 p.p.h.r. of vulcanisation activators with a purity level up to 100.0 wt %;0 to 20.0 p.p.h.r. of vulcanisation coagents with a purity level up to 100.0 wt %;0 to 20.0 p.p.h.r. of antioxidants with a purity level up to 100.0 wt %;0 to 20.0 p.p.h.r. of processing waxes;0 to 100.0 p.p.h.r. of dispersing agents; and0 to 35.0 p.p.h.r. of colouring agents with a purity level up to 100.0 wt %.4. The ENR based blend according to claim 1 , wherein the blend ...

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Номер записи: 5
12-01-2017 дата публикации

Method for producing functionalised telechelic oligomers

Номер: US20170009043A1
Автор: Ali Mouawia, Annie-Claude Gaumont, Arnaud Nourry, Isabelle Dez, Jean-Francois Pilard
Принадлежит: UNIVERSITE DU MAINE

This invention relates to a method for producing functionalised telechelic oligomers, comprising two steps. The first step relates to bringing a raw material comprising at least one high-molecular-weight polymer comprising at least two unsaturations, into contact with a solution comprising at least one metathesis catalyst and at least one functionalising agent. The second step relates to the separation of the functionalised telechelic oligomers produced by the metathesis reaction in ionic liquid medium of the first step.

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Номер записи: 6
12-01-2017 дата публикации

Method for producing devulcanized rubber and an apparatus therefor

Номер: US20170009044A1
Автор: Gopinath B. Sekhar
Принадлежит: SEKHAR RESEARCH INNOVATIONS Sdn Bhd

A method for producing devulcanized rubber and an apparatus ( 100 ) therefor. The method for producing devulcanized rubber comprises the steps of (1) providing vulcanized rubber particles with a pre-determined particle size and (2) devulcanizing the vulcanized rubber particles. The vulcanized rubber particles are devulcanized mechanically by impact forces and devulcanized chemically by a chemical composition. The impact forces break sulphur-sulphur and sulphur-carbon bonds of the vulcanized rubber particles causing surfaces of the rubber to become receptive in reacting with the chemical composition and the chemical composition renders the sulphur passive to prevent reattachment of the bonds, of which the chemical composition comprises at least one accelerator, at least one inorganic activator and at least one organic activator.

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Номер записи: 7
27-01-2022 дата публикации

FOAM AND METHOD FOR PRODUCING SAME

Номер: US20220025142A1
Автор: Kuroki Daisuke, MIYAMORI Ryo, Sato Akihiro, SEKIGUCHI Hideya
Принадлежит:

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

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Номер записи: 8
27-01-2022 дата публикации

Rubber composition based on at least one functionalized elastomer comprising polar functional groups and a specific phenolic compound

Номер: US20220025163A1
Автор: Anne-Lise Thuilliez, Odile Gavard-Lonchay
Принадлежит: Compagnie Generale des Etablissements Michelin SCA

The invention relates to a rubber composition based on at least one functionalized elastomer comprising polar functional groups, a reinforcing filler and a specific phenolic compound.

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Номер записи: 9
21-01-2016 дата публикации

COMPOSITIONS AND METHODS FOR RECOVERING AND/OR REMOVING REAGENTS FROM POROUS MEDIA

Номер: US20160017237A1
Автор: Fan Liang-tseng, Lee William Arthur Fitzhugh, SHAFIE Shahram Reza, Tollas Julius Michael
Принадлежит: GREEN SOURCE HOLDINGS LLC

A composition and method for displacing, dissolving, extracting, recovering, and/or removing solvent and/or any solvent-associated liquids from a solvent-treated material or penetrating through pores or the surface of a solvent-treated material using a solvent-extracting composition for contacting solvent-treated material and separating the solvent and any solvent-associated liquids from the solvent-treated material as well as the solvent-extracting composition.

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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
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: 12
26-01-2017 дата публикации

POWER TRANSMISSION BELT

Номер: US20170023098A1
Автор: Burlett Donald J.
Принадлежит:

This disclosure describes systems and methods which utilize organoclays compounded with zinc acrylates to improve the performance of drive belts. In performing research on organoclays, the inventors created formulations and methods of compatibilizing organoclays with metal salts of α-β-unsaturated organic acids and incorporating the compatibilized organoclays into the belt compound so that the planar organoclay particles are substantially aligned with the longitudinal plane of the belt. This is shown to provide a) lower Mooney viscosity (resulting in greater ease of processing), b) higher stiffness (both tensile and dynamic) c) improved tear resistance, d) lower crack growth rate and e) nearly equivalent fatigue resistance in spite of the increased stiffness. This combination of traits in the belts created utilizing the organoclay/zinc acrylate technology described herein results in an unexpectedly improved belt. 1. A power transmission belt having an elastomeric belt body , said elastomeric belt body comprising:an organoclay compatibilized using one or more maleated polymers, reactive silanes and metal salts of α-β-unsaturated organic acids.2. The power transmission belt of claim 1 , wherein the organoclay further comprises one or more of the following:a) one or more of a smectite group material, a vermiculite group material or a kaolin group material.b) wherein the organoclay is one or more of montmorillonite, aliettite, beidellite, ferrosaponite, hectorite, nontronite, pimelite, saliotite, saponite, sauconite, stevensite, swinefordite, volkonskoite, yakhontovite, and zincsilite.c) wherein the organoclay is primarily montmorillonite modified using an ammonium salt.d) wherein the organoclay is primarily montmorillonite modified using a dihydrogenated tallow dimethyl ammonium salt.e) wherein the organoclay includes montmorillonite modified using a dihydrogenated tallow dimethyl ammonium salt as a surface modifier and having a surface modifier concentration of about ...

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Номер записи: 13
23-01-2020 дата публикации

PROCESS FOR REGENERATING A MONOLITHIC, MACRO-STRUCTURAL, INTER-PENETRATING ELASTOMER NETWORK MORPHOLOGY FROM GROUND TIRE RUBBER PARTICLES

Номер: US20200024433A1
Автор: Coe William B.
Принадлежит:

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications. 1. A method for preparing a modified rubber , comprising:introducing an aqueous slurry comprising vulcanized rubber particles and an organometallic compound into an electromechanical reactor configured to generate a phase space environment with cavitation, so as to induce delamination of a rubber matrix within the vulcanized rubber particles as coordinated with disrupting sulfidic linkages.2. The method of claim 1 , further comprising reestablishing dislocated sulfidic linkages to establish within the matrix sulfur bridge cross linked claim 1 , re-aligned claim 1 , laminates.3. The method of claim 1 , wherein delamination is associated with a portion of rigid sulfidic bridges of the vulcanized rubber particles becoming unbound at an original methyl carbocation while remaining tethered at an original allylic carbocation.4. The method of claim 1 , wherein the organometallic compound comprises a metal having octahedral molecular geometry.5. The method of claim 1 , wherein the organometallic compound comprises a metal ion selected from the group consisting of Co claim 1 , Cu claim 1 , Ni claim 1 , Zn claim 1 , and Mn.6. The method of claim 1 , wherein the organometallic compound comprises an organic anion as a ligand to the metal ion.7. The method of claim 6 , wherein the organic anion comprises acetate ion.8. The method of claim 1 , wherein the organometallic compound is copper acetate.9. The method of claim 1 , wherein the organometallic compound is a metal salt that undergoes a phase change from solid to liquid in a range ...

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Номер записи: 14
01-02-2018 дата публикации

CONSUMER SCRUBBING ARTICLES WITH CERAMIC MICROPARTICLES AND METHOD OF MAKING SAME

Номер: US20180028036A1
Автор: Cole Matthew S., Daveloose Paul N., Gunes Ibrahim S., Yalcin Baris
Принадлежит: 3M INNOVATIVE PROPERTIES COMPANY

A scrubbing article including a substrate and a texture layer . The texture layer is formed on to a surface of the substrate and includes a multiplicity of microparticles. In some embodiments, the multiplicity of microparticles comprises plastic microbubbles and/or ceramic microspheres that are substantially spherical. In related embodiments, at least some of the ceramic microspheres are solid, and in other embodiments at least some of the ceramic microspheres are glass microbubbles. The substrate can assume various forms, such as nonwoven, fabric (e.g., woven or knitted), foam, film and sponge material or combinations thereof. 1. A scrubbing article comprising:a substrate; anda texture layer formed on at least one surface of the substrate, the texture layer including a multiplicity of ceramic microparticles.2. The scrubbing article of claim 1 , wherein at least some of the ceramic microparticles are solid microspheres.3. The scrubbing article of claim 1 , wherein at least some of the ceramic microparticles are hollow microspheres.4. The scrubbing article of claim 3 , wherein at least some of the hollow microspheres are glass microbubbles.5. The scrubbing article of claim 1 , wherein the multiplicity of microparticles are substantially spherical.6. The scrubbing article of claim 5 , wherein at least 95% of the microparticles of the multiplicity of ceramic microparticles have an outer shape that is within 5% of a truly spherical shape.7. The scrubbing article of claim 1 , wherein the substrate includes a material selected from the group consisting of a nonwoven web claim 1 , a woven web claim 1 , a knitted web claim 1 , foam claim 1 , cellulose sponge claim 1 , and a film.8. The scrubbing article of claim 1 , wherein the texture layer further includes a binder resin.9. The scrubbing article of claim 8 , wherein the binder resin includes a latex.10. The scrubbing article of claim 8 , wherein the binder resin is configured to harden without crosslinking.11. The ...

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Номер записи: 15
17-02-2022 дата публикации

INTER-PENETRATING ELASTOMER NETWORK DERIVED FROM GROUND TIRE RUBBER PARTICLES

Номер: US20220049101A1
Автор: Coe William B.
Принадлежит:

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications. 1. A method for preparing a polymeric matrix , comprising:combining vulcanized rubber particles, a complementary polymer, and an organometallic compound into a mixture, so as to disrupt sulfidic linkages, and so as to induce crosslinking of the complementary polymer into the polymeric matrix; andreestablishing dislocated sulfidic linkages to establish within the matrix sulfur bridge cross linked, re-aligned laminates.2. The method of claim 1 , wherein the combining induces delamination of a rubber matrix within the vulcanized rubber particles.3. The method of claim 2 , wherein delamination is associated with a portion of rigid sulfidic bridges of the vulcanized rubber particles becoming unbound at an original methyl carbocation while remaining tethered at an original allylic carbocation.4. The method of claim 1 , wherein the organometallic compound comprises a metal having octahedral molecular geometry.5. The method of claim 1 , wherein the organometallic compound comprises a metal ion selected from the group consisting of Co2+ claim 1 , Cu2+ claim 1 , Ni2+ claim 1 , Zn2+ claim 1 , and Mn2+.6. The method of claim 1 , wherein the organometallic compound comprises an organic anion as a ligand to the metal ion claim 1 , optionally wherein the organic anion comprises acetate ion.7. The method of claim 1 , wherein the organometallic compound is copper acetate.8. The method of claim 1 , wherein the organometallic compound is a metal salt that undergoes a phase change from solid to liquid in a range of 115-150° C.9. The method ...

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Номер записи: 16
05-02-2015 дата публикации

COMPOUND FOR REALIZATION OF MODIFIED BITUMEN FOR ASPHALTS

Номер: US20150038621A1
Автор: CARDINALI Bruno
Принадлежит: TECNOFILM S.P.A.

A production method of a compound for realization of modified bitumen for asphalts is disclosed, and includes the following steps: grinding of vulcanized rubber to obtain vulcanized crumb rubber with granulometry lower than 0.4 mm; mixing of the vulcanized crumb rubber, SBS and lubricant in an extruder, wherein the weight percentage of lubricant is between 1% and 50% compared to mixture weight and the vulcanized crumb rubber is in a weight percentage of 70-100% compared to SBS weight; in such way to obtain an extruded compound containing the vulcanized crumb rubber, SBS and lubricant. 1. A production method of a compound for realization of modified bitumen for asphalts , comprising the following steps:grinding of vulcanized rubber to obtain vulcanized crumb rubber with granulometry lower than 0.4 mm;mixing of vulcanized crumb rubber, SBS and lubricant inside an extruder, wherein weight percentage of lubricant is between 1% and 50% with respect to weight of mixture, and vulcanized crumb rubber is in weight percentage equal to weight percentage of SBS;extrusion to obtain an extruded compound containing said vulcanized crumb rubber, SBS and lubricant, wherein the extrusion takes place at a temperature between 160 and 200° C.2. The method of claim 1 , wherein granulometry of vulcanized crumb rubber is between 0.09 and 0.32 mm.3. The method of claim 1 , wherein the crumb rubber is obtained from recycled end-of-use tires (PFU).4. (canceled)5. The method of claim 1 , wherein SBS is of radial type.6. The method of claim 1 , wherein SBS is of linear type.7. The method of claim 1 , wherein SBS is a mixture of radial SBS and linear SBS.8. The method of claim 1 , wherein lubricant is in weight percentage between 20-30% with respect to total weight of compound.9. The method of claim 1 , wherein the lubricant is mineral oil.10. The method of claim 1 , wherein both crumb rubber and SBS are in weight percentage between 35% and 42% with respect to total weight of compound.11. ( ...

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Номер записи: 17
09-02-2017 дата публикации

METHOD FOR MODIFYING SURFACE AND SURFACE MODIFIED ELASTIC BODY

Номер: US20170037212A1
Автор: Minagawa Yasuhisa
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

The present invention provides a method for surface-modifying a rubber vulcanizate or a thermoplastic elastomer, which can cost-effectively provide a variety of functions, such as remarkable sliding properties or biocompatibility, according to the application. The present invention relates to a method for surface-modifying a rubber vulcanizate or a thermoplastic elastomer as a modification target, the method including: step 1 of forming polymerization initiation points A on a surface of the modification target; step 2 of radically polymerizing a non-functional monomer starting from the polymerization initiation points A to grow non-functional polymer chains; step 3 of washing the modification target on which the non-functional polymer chains are grown; step 4 of forming polymerization initiation points B on a surface of the non-functional polymer chains; and step 5 of radically polymerizing a fluorine-containing functional monomer starting from the polymerization initiation points B to grow fluorine-containing functional polymer chains. 133-. (canceled)34. A method for surface-modifying a rubber vulcanizate or a thermoplastic elastomer as a modification target , the method comprising:step 1 of forming polymerization initiation points A on a surface of the modification target;step 2 of radically polymerizing a non-functional monomer starting from the polymerization initiation points A to grow non-functional polymer chains;step 3 of washing the modification target on which the non-functional polymer chains are grown;step 4 of forming polymerization initiation points B on a surface of the non-functional polymer chains; andstep 5 of radically polymerizing a fluorine-containing functional monomer starting from the polymerization initiation points B to grow fluorine-containing functional polymer chains,the washing being carried out with at least one selected from the group consisting of hot water at a temperature of 50° C. to 150° C., steam, and an organic solvent,the non ...

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Номер записи: 18
09-02-2017 дата публикации

Single-Screw Extrusion Desulfurization And Post-Processing System, And Method For Preparing Reclaimed Rubber

Номер: US20170037216A1
Автор: LV Baiyuan, LV Xiaolong
Принадлежит: Qingdao University of Science & Technology

A single-screw extrusion desulfurization and post-processing system and a method for preparing reclaimed rubber. The single-screw extrusion desulfurization and post-processing system comprises: a single-screw desulfurization device, a single-screw post-processing device and a closed connection device for connecting the single-screw desulfurization device and the single-screw post-processing device, the single-screw post-processing device includes a post-processing feeding unit and a post-processing unit which are connected with each other, and a post-processing screw running through the post-processing feeding unit and the post-processing unit. 1. A single-screw extrusion desulfurization and post-processing system , whereinthe system comprises: a single-screw desulfurization device;the single-screw desulfurization device includes a desulfurizing feeding unit and a desulfurizing unit which are connected with each other, and a desulfurizing screw running through the desulfurizing feeding unit and the desulfurizing unit; anda heating structure is respectively disposed in the desulfurizing feeding unit, the desulfurizing unit and the desulfurizing screw; and whereinthe system further comprises: a single-screw post-processing device and a closed connection device for connecting the single-screw desulfurization device and the single-screw post-processing device;the single-screw post-processing device includes a post-processing feeding unit and a post-processing unit which are connected with each other, and a post-processing screw running through the post-processing feeding unit and the post-processing unit.2. The single-screw extrusion desulfurization and post-processing system according to claim 1 , whereinthe desulfurizing unit includes a desulfurizing feeding cylinder and at least one stage of desulfurizing cylinder; the desulfurizing feeding cylinder is connected with the at least one stage of desulfurizing cylinder; and the desulfurizing screw runs through the ...

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Номер записи: 19
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: 20
12-02-2015 дата публикации

METHOD FOR PRODUCING RUBBER ROLLER AND RUBBER COMPOSITION

Номер: US20150044379A1
Автор: IIDA Eiichi
Принадлежит: FUJI XEROX CO., LTD.

A method for producing a rubber roller includes preparing a rubber composition containing epichlorohydrin rubber and a conductive agent, the epichlorohydrin rubber being an epichlorohydrin-ethylene oxide-allyl glycidyl ether ternary copolymer that contains an ethylene oxide-derived structural unit within a range of 40 mol % or more and 60 mol % or less relative to the entire ternary copolymer, and a content of calcium oxide being 1 part by weight or less relative to 100 parts by weight of the epichlorohydrin rubber; removing a volatile component so that a ratio of the volatile component contained in the rubber composition is 0.8% by weight or less relative to the entire rubber composition; coating a periphery of a core body with the rubber composition to form a rubber composition layer; and vulcanizing the rubber composition layer under atmospheric pressure to form a rubber layer on the periphery of the core body. 1. A method for producing a rubber roller comprising:preparing a rubber composition containing epichlorohydrin rubber and a conductive agent, the epichlorohydrin rubber being an epichlorohydrin-ethylene oxide-allyl glycidyl ether ternary copolymer that contains an ethylene oxide-derived structural unit within a range of 40 mol % or more and 60 mol % or less relative to the entire ternary copolymer, and a content of calcium oxide being 1 part by weight or less relative to 100 parts by weight of the epichlorohydrin rubber;removing a volatile component so that a ratio of the volatile component contained in the rubber composition is 0.8% by weight or less relative to the entire rubber composition;coating a periphery of a core body with the rubber composition having a volatile component ratio of 0.8% by weight or less to form a rubber composition layer; andvulcanizing the rubber composition layer under atmospheric pressure to form a rubber layer on the periphery of the core body.2. The method for producing a rubber roller according to claim 1 ,wherein the ...

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Номер записи: 21
07-02-2019 дата публикации

ELASTOMER COMPOUNDS

Номер: US20190040211A1
Автор: Chen Limeng, Choi Jaesun, Kyrlidis Agathagelos, Tassinari Oliver W.
Принадлежит:

Disclosed herein are elastomer compounds comprising: at least one elastomer that is resistant to heat for 70 h at 100° C. such that the at least one elastomer exhibits at least one of the following properties selected from: (a) a change in durometer hardness of no more than 15 points, (b) a change in tensile strength of no more than 40%, and (c) a change in ultimate elongation of no more than 40% The elastomer compound further comprises at least one graphene-based material present in an amount ranging from 0.01 phr to 30 phr relative to the at least one elastomer and at least one carbon black present in an amount ranging from 15 phr to 150 phr relative to the at least one elastomer. Also disclosed are methods of making such compounds, and articles comprising elastomer compounds. 1. An elastomer compound comprising:at least one elastomer that is resistant to heat for 70 h at 100° C. such that the at least one elastomer exhibits at least one of the following properties selected from:(a) a change in durometer hardness of no more than 15 points,(b) a change in tensile strength of no more than 40%, and(c) a change in ultimate elongation of no more than 40%;at least one graphene-based material present in an amount ranging from 0.01 phr to 30 phr relative to the at least one elastomer; andat least one carbon black present in an amount ranging from 15 phr to 150 phr relative to the at least one elastomer.2. The compound of claim 1 , wherein after being subjected to 100° C. for 70 h claim 1 , the at least one elastomer exhibits each of the properties (a) to (c).3. The compound of claim 1 , wherein the at least one elastomer is selected from rubbers and polymers comprising at least one monomer selected from 1 claim 1 ,3-butadiene claim 1 , styrene claim 1 , isoprene claim 1 , isobutylene claim 1 , 2 claim 1 ,3-dialkyl-1 claim 1 ,3-butadiene claim 1 , acrylonitrile claim 1 , ethylene claim 1 , and propylene claim 1 , where alkyl is selected from C1-C6 alkyls.46-. (canceled)7. ...

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Номер записи: 22
07-02-2019 дата публикации

SYSTEMS AND METHODS FOR TREATING ELASTOMERIC WORKPIECES

Номер: US20190040219A1
Автор: Iyer Subramanian, Thompson Andrew M.
Принадлежит:

A method of treating an elastomeric workpiece is provided. The method includes: (a) providing an elastomeric workpiece; and (b) altering a mechanical property of the elastomeric workpiece by fluorinating the elastomeric workpiece in a controlled environment. 1. A method of treating an elastomeric workpiece , the method comprising the steps of:(a) providing an elastomeric workpiece; and(b) altering a mechanical property of the elastomeric workpiece by fluorinating the elastomeric workpiece in a controlled environment.2. The method of wherein step (b) includes altering a tensile property of the elastomeric workpiece.3. The method of wherein step (b) includes altering an impact property of the elastomeric workpiece.4. The method of wherein step (b) includes altering a wear property of the elastomeric workpiece.5. The method of wherein step (b) includes altering an elastic modulus of the elastomeric workpiece.6. The method of wherein step (b) includes increasing an elastic modulus of the elastomeric workpiece by at least 25%.7. The method of wherein step (b) includes increasing an elastic modulus of the elastomeric workpiece by at least 50%.8. The method of wherein step (b) includes fluorinating the elastomeric workpiece in a chamber.9. The method of further comprising a step of preparing the chamber to have an anaerobic environment prior to step (b).10. The method of wherein step (b) includes fluorinating the elastomeric workpiece in the controlled environment using pure fluorine.11. The method of wherein step (b) includes fluorinating the elastomeric workpiece in the controlled environment using a gas mixture including fluorine mixed with an inert gas.12. The method of wherein step (b) includes fluorinating the elastomeric workpiece in the controlled environment using a gas mixture including fluorine mixed with at least one additional gas claim 1 , the at least one additional gas including at least one of nitrogen claim 1 , carbon dioxide claim 1 , and argon.13. A ...

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Номер записи: 23
14-02-2019 дата публикации

Graft Copolymers for Dispersing Graphene and Graphite

Номер: US20190047325A1
Автор: Andy H. Tsou, Hillary L. Passino, Yong Yang
Принадлежит: ExxonMobil Chemical Patents Inc

Disclosed herein are graft copolymer nanofiller dispersants comprising a polyaromatic hydrocarbon backbone and polyaliphatic hydrocarbon comb arms and methods for making same. Also disclosed are elastomeric nanocomposite compositions comprising a halobutyl rubber matrix nanoparticles of graphite or graphene, and the graft copolymer nanofiller dispersant. Such elastomeric nanocomposite compositions are useful tire innerliners or innertubes.

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Номер записи: 24
14-02-2019 дата публикации

HEAT CONDUCTIVE SHEET AND METHOD OF PRODUCING SAME, AND HEAT DISSIPATION DEVICE

Номер: US20190048244A1
Автор: ITO Toyokazu, KITAGAWA Hiromi, KOBAYASHI Gen
Принадлежит: ZEON CORPORATION

Disclosed are a heat conductive sheet including a resin and a particulate carbon material, and having an Asker C hardness at 25° C. of 60 or more and a thermal resistance value under a pressure of 0.5 MPa of 0.20° C./W or less, a method of producing a heat conductive sheet, and a heat dissipation device including the heat conductive sheet interposed between a heat source and a heat radiator. 1. A heat conductive sheet comprising a resin and a particulate carbon material , and having an Asker C hardness at 25° C. of 60 or more and a thermal resistance value under a pressure of 0.5 MPa of 0.20° C./W or less.2. The heat conductive sheet according to claim 1 , having a thermal resistance value under a pressure of 0.1 MPa is 0.40° C./W or less.3. The heat conductive sheet according to claim 1 , having a tack measured by a probe tack test of 0.85 N or less.4. The heat conductive sheet according to claim 1 , wherein the resin is a thermoplastic resin.5. The heat conductive sheet according to claim 4 , wherein the thermoplastic resin is a combination of a thermoplastic resin that is solid at ordinary temperature and a thermoplastic resin that is liquid at ordinary temperature.6. A heat dissipation device comprising the heat conductive sheet as recited in interposed between a heat source and a heat radiator.7. A method of producing a heat conductive sheet comprising:shaping a composition containing a resin and a particulate carbon material into a sheet by pressure application to provide a pre-heat conductive sheet;obtaining a laminate either by stacking a plurality of the preheat conductive sheets in a thickness direction or by folding or rolling the pre-heat conductive sheet; andslicing the laminate at an angle of 45° or less relative to the stacking direction to obtain a heat conductive sheet. The present disclosure relates to a heat conductive sheet and a method of producing the same, and a heat dissipation device.In recent years, electronic parts such as plasma display ...

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Номер записи: 25
25-02-2016 дата публикации

Silicone resin foam and sealing material

Номер: US20160053069A1
Автор: Kouzou Nakamura, Masahiko Gotoh
Принадлежит: Sekisui Chemical Co Ltd

A silicone resin foamed body according to the present invention comprises: a silicone resin cured product (A); and a plurality of particles (B) dispersed in the silicone resin cured product (A) and each having a cavity portion (b1) therein, wherein the silicone resin foamed body has a cavity portion (C) surrounded with the silicone resin cured product (A) or with the silicone resin cured product (A) and the particles (B) in the silicone resin cured product (A).

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Номер записи: 26
22-02-2018 дата публикации

Modified conjugated diene polymer, method for producing modified conjugated diene polymer, polymer composition, crosslinked polymer, and tire

Номер: US20180051101A1
Автор: Hiroyuki Morita, Koichiro Tani, Ryoji Tanaka, Takumi Adachi
Принадлежит: JSR Corp

A modified conjugated diene-based polymer is produced by reacting a conjugated diene-based polymer having an alkali metal or an alkali-earth metal at a terminal of the polymer with a compound represented by formula (1). R 1 and R 2 independently represent a hydrocarbyl group having 20 or fewer carbon atoms. R 3 represents a substituted alkyl group having 20 or fewer carbon atoms prepared through substitution of at least one of a hydrogen atom and —CH 2 — of an alkyl group by a group containing only at least one heteroatom selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, or a monovalent aromatic group having 20 or fewer carbon atoms and containing at least one element selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, with the proviso that R 3 does not have active hydrogen. R 4 represents an alkanediyl group having 20 or fewer carbon atoms. n is 1 or 2

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Номер записи: 27
02-03-2017 дата публикации

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

Номер: US20170058086A1
Автор: KATO Shinji
Принадлежит: ZEON CORPORATION

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

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Номер записи: 28
02-03-2017 дата публикации

DEGASSING METHOD, DEGASSING DEVICE AND USE OF SCREW ELEMENTS

Номер: US20170058095A1
Автор: Bierdel Michael, KIRCHHOFF Joerg, Koenig Thomas
Принадлежит:

The present invention relates to a process for devolatilising polymer-containing media such as, in particular, polymer melts, polymer solutions and dispersions and also devolatilisation apparatuses for carrying out the abovementioned process. 1. A process for removing volatile compounds from a polymer-containing medium which contains at least one polymer and at least one volatile compound , the process comprising: [{'sub': n', 'n, 'a barrel and n barrel holes Bhaving associated hole diameters Dwhere n is an integer,'}, {'sub': n', 'n', 'n, 'claim-text': [{'sup': 'm', 'sub': max n', 'n', 'n, 'm relative maxima Rin respect of a radial dimension of the cross-sectional profile to the axis of rotation Aof the screw W, where m is an integer from 1 to 8,'}, {'sub': max n', 'n', 'n', 'max n', 'max n', 'n, 'a maximum value Rin respect of the radial dimension of the cross-sectional profile to the axis of rotation Aof the screw W, where Rfulfils: R<=(D/2)'}], 'one or more screws Warranged concentrically in each of the barrel holes Band configured to be rotatable within the barrel holes, wherein each screw has an axis of rotation Aand is equipped with treatment elements, the treatment elements having a cross-sectional profile orthogonal to the axis of rotation, wherein the cross-sectional profile in a circumferential direction has, 'at least one feed zone,', 'one or more devolatilisation zones comprising in each case at least one devolatilisation opening which is suitable for discharge of volatile constituents from a polymer-containing medium from the extruder, and', 'at least one discharge zone,, 'a) introducing the polymer-containing medium into a devolatilisation apparatus comprising [{'sup': 'm', 'sub': 'max n', 'claim-text': {'sub': n', 'max n', 'n, 'sup': 'm', '0.420 D Подробнее

Номер записи: 29
22-05-2014 дата публикации

Aqueous dispersion, and laminate, adhesive for footwear, and footwear made using same

Номер: US20140137435A1
Автор: Takuma Yano
Принадлежит: Unitika Ltd

An aqueous dispersion including an acid-modified polyolefin resin (A) having a content of an unsaturated carboxylic acid component of 0.1 to 10% by mass, a rubber component (B), a tackifier component (C) and an aqueous medium, wherein in relation to 100 parts by mass of the acid-modified polyolefin resin (A), the content of the rubber component (B) is 5 to 1900 parts by mass, and in relation to 100 parts by mass of the total amount of the acid-modified polyolefin resin (A) and the rubber component (B), the content of the tackifier component (C) is 5 to 300 parts by mass.

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Номер записи: 30
10-03-2016 дата публикации

SOLUTION BASED POLYMER NANOFILLER-COMPOSITES SYNTHESIS

Номер: US20160068642A1
Автор: Duong Hung, Pitta Anil, Sun Li
Принадлежит:

A solution based polymer nanofiller composite processing method to improve mechanical, electrical, thermal and/or chemical properties. The solution based synthesis method may include the steps of surface functionalizing carbon nanomaterials and dissolving a polymer in a solvent. The functionalized carbon nanomaterials and dissolved polymer may be mixed until the mixture is homogenous. The mixture may be cured to form the polymer carbon nano-composite material, which provides significant improvements in modulus, hardness, strength, fracture toughness, wear, fatigue, creep, and damping performance. 1. A polymer nanofiller composite comprising:a polymer; andcarbon nanomaterials dispersed within the polymer, wherein the carbon nanomaterials are dispersed within the polymer utilizing a solution based approach, with nanofillers uniformly distributed in the polymeric matrices.2. The composite of claim 1 , wherein the polymer nanofiller composite comprises equal to or between 1-30 wt % of the carbon nanomaterials and equal to or between 70-99 wt % of the polymer.3. The composite of claim 1 , wherein the polymer nanofiller composite demonstrates a hardness of 65 or greater (Hardness A claim 1 , pts).4. The composite of claim 1 , wherein the polymer nanofiller composite demonstrates a modulus at 100% strain of 600 psi or better.5. The composite of claim 1 , wherein the carbon nanomaterials are carbon nanotubes (CNTs) claim 1 , carbon nanofibers (CNFs) claim 1 , or buckyballs.6. The composite of claim 5 , wherein the carbon nanomaterials are functionalized with an agent that improves chemical bonding between the carbon nanomaterials and a polymer.7. The composite of claim 6 , further comprising a vulcanizing agent.8. The composite of claim 10 , wherein the vulcanizing agent is sulfur claim 10 , peroxides claim 10 , urethane crosslinkers claim 10 , metallic oxides claim 10 , acetoxysilane claim 10 , curatives claim 10 , and/or accelerators.9. The composite of claim 1 , wherein ...

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Номер записи: 31
10-03-2016 дата публикации

Fragrant gel polymer with solvents

Номер: US20160068782A1
Автор: Dobler Sven, Tran Long
Принадлежит:

The fragrant gel polymer system is a process where a complete fragrance formulation remains whole and is then blended with either a polymer or a cross-linking agent. The non-fragrance carrying polymer is then liquefied and made homogenous with a solvent, including esters. The solvents modify viscosity and ease the mixing of the non-fragrance carrying polymer with the fragrance carrying polymer. The method also provides surfactants and wetting agents for further integration and mixing of the fragrance oils with either the polymer or the cross-linking agent during the steps of the process. Mixing of the fragrance carrying polymer and the non-fragrance polymer results in a gel that sets in less time and with less syneresis than existing processes. 1. A process for preparing a fragrant gel comprising the steps of:blending a liquid mixture A including a fragrance oil and one of a polymer or a cross linking agent;said liquid mixture A comprising at least 5%-95% by weight of the fragrant gel;wherein said polymers derived from one of maleinized butadiene, isoprene or chloroprene, and wherein said polymer comprising at least 5%-50% by weight of the liquid mixture A;wherein said cross linking agent is derived from one of amine or polyetheramine;blending a liquid mixture B including a polymer or a cross linking agent omitted from mixture A and a solvent, said mixture B being homogeneous and without any of said fragrance oil, said liquid mixture B comprising at least 10%-90% by weight of the fragrance gel, said mixture including the polymer or the cross linking agent omitted from mixture A, and a solvent, said mixture B being homogeneous;wherein said solvent is an ester, said solvent modifying the viscosity of mixture B, to between about 10 Pa·s to 200 Pa·s, and functions as a plastifier to provide a fruit smell to the fragrance oil of mixture A when combined, said ester including one of di-isoheptyl phthalate, 2-tert-butylcyclohexyl acetate, diethyl malonate, ethyl benzoate, ...

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Номер записи: 32
15-03-2018 дата публикации

THERMOPLASTIC ELASTOMERS DERIVED FROM DE-VULCANIZED RUBBER

Номер: US20180072862A1
Автор: Fisher James F.
Принадлежит:

A thermoplastic copolymer is made by first de-vulcanizing a sulfur-crosslinked elastomeric material to produce a liquid phase component. The liquid phase component is subsequently mixed with a compatible thermoplastic polymer at a temperature above its melting point thereof, and the resulting mixture is cooled to produce a solid product. 1. A method of making a thermoplastic elastomer , comprising: utilizing a de-vulcanized elastomeric material which as such is a liquid phase component; subsequently mixing said liquid phase component with a compatible thermoplastic polymer at a temperature above the melting point thereof; and cooling the resulting mixture to produce a solid thermoplastic elastomer.2. A method as claimed in claim 1 , comprising mixing about 25-75% de-vulcanized elastomeric polymer with about 25-75% post-consumer claim 1 , post-industrial or virgin thermoplastic resin with appropriate monomeric content.3. A method as claimed in comprising mixing about 30-70% de-vulcanized SBR/NR derived from post-consumer tire crumb with about 30-70% virgin claim 1 , post-industrial or post-consumer polystyrene resins.4. A method as claimed in comprising mixing about 30-70% de-vulcanized SBR/NR derived from post-consumer tire crumb with about 30-70% virgin claim 1 , post-industrial or post-consumer polyolefin resins.5. A method as claimed in comprising mixing about 30-70% de-vulcanized NBR with about 30-70% virgin claim 1 , post-industrial or post-consumer ABS polymer.6. A method as claimed in comprising mixing about 30-70% de-vulcanized EPDM with about 30-70% virgin claim 1 , post-industrial and post-consumer polyolefin resins.7. A method as claimed in comprising mixing about 30-70% de-vulcanized EPDM with about 30-70% virgin claim 1 , post-industrial and post-consumer ethylene vinyl acetate polymer.8. A method as claimed in comprising mixing about 30-70% de-vulcanized post-consumer tire derived elastomer with about 30-70% virgin claim 1 , post-industrial and post- ...

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Номер записи: 33
15-03-2018 дата публикации

Thermoplastic elastomer composition and production process for the same

Номер: US20180072880A1
Автор: Hayato Kurita, Hideki Mochizuki, Kazuyoshi Kaneko, Masahiro Enna, Tatsuya Enomoto
Принадлежит: Mitsui Chemicals Inc

A thermoplastic elastomer composition obtained by dynamically crosslinking an ethylene/α-olefin/non-conjugated polymer copolymer (A), a polyolefin resin (B), a softener (C) in an amount of 1 to 200 parts by mass per 100 parts by mass of the total of the copolymer (A) and the resin (B), and a crosslinking agent (D) by the use of a batch mixer under the conditions satisfying the requirements (1) to (4).

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Номер записи: 34
14-03-2019 дата публикации

Fluororubber composition and crosslinked fluororubber product

Номер: US20190077926A1
Автор: Kenichi Kunieda, Tomonori Furukawa
Принадлежит: Nok Corp

A fluororubber composition and a crosslinked fluororubber product include substantially no oxide of a divalent metal, hydroxide of a divalent metal, or carbonate of a divalent metal, and comprise graphite having an average particle diameter of 4 μm to 20 μm or a pitch-based carbon fiber having an average fiber length of 0.04 to 0.15 mm, as a filler in a peroxide-crosslinkable fluororubber. Preferably, the graphite is included in the range of 5 phr by weight to 50 phr by weight, or the pitch-based carbon fiber is included in the range of 5 phr by weight to 50 phr by weight, per 100 phr by weight of the fluororubber.

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Номер записи: 35
24-03-2016 дата публикации

Method of Recycling Vulcanized Rubber

Номер: US20160083550A1
Автор: Hysen Blloshmi, Kastriot Blloshmi
Принадлежит: Individual

A method for recycling vulcanized rubber provided the use of a reactor and a glycerol and hydrochloric acid solution. A quantity of vulcanized rubber is reduced in size, and submerged into a reactor containing the glycerol and hydrochloric acid solution. The quantity of vulcanized rubber is simultaneously heated and agitated to chemically break sulfide bonds within the quantity of vulcanized rubber. A solid residue, byproduct of the reaction, is separated from the quantity of vulcanized rubber, glycerol, and hydrochloric acid mixture. After separation, an additional quantity of hydrochloric acid is added into the aforementioned mixture to wash the mixture and further the reaction to an optimal yield. The quantity of vulcanized rubber, glycerol and hydrochloric acid mixture is reheated and agitated to produce a full quantity of de-vulcanized rubber. The full quantity of de-vulcanized rubber is recovered through a solid-liquid separation process.

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Номер записи: 36
31-03-2022 дата публикации

CROSSLINKED FLUORESCENT LATEXES

Номер: US20220098374A1
Автор: Lu Chunliang, Nguyen Peter V.
Принадлежит:

Methods of making a crosslinked fluorescent latex are provided. In an embodiment, such a method comprises adding a water-soluble initiator to an uncrosslinked fluorescent latex comprising water and uncrosslinked resin particles comprising an unsaturated resin and a fluorescent agent incorporated therein; and exposing the water-soluble initiator to conditions to activate the water-soluble initiator and induce crosslinking reactions between the activated water-soluble initiator and the unsaturated resin, thereby forming a crosslinked fluorescent latex comprising crosslinked fluorescent resin particles comprising crosslinked resin and the fluorescent agent incorporated therein. Crosslinked fluorescent latexes are also provided, as are fluorescent toners made from the same. 1. A method of making a crosslinked fluorescent latex , the method comprising:adding a water-soluble initiator to an uncrosslinked fluorescent latex comprising water and uncrosslinked resin particles comprising an unsaturated resin and a fluorescent agent incorporated therein; andexposing the water-soluble initiator to conditions to activate the water-soluble initiator and induce crosslinking reactions between the activated water-soluble initiator and the unsaturated resin, thereby forming a crosslinked fluorescent latex comprising crosslinked fluorescent resin particles comprising crosslinked resin and the fluorescent agent incorporated therein.2. The method of claim 1 , wherein the crosslinked fluorescent latex is characterized by a degree of crosslinking n of no more than 0.50 over range of frequencies from 0.100 to 1.000 rad/s as determined from a rheology sweep test at 120° C.3. The method of claim 1 , wherein the degree of crosslinking n is no more than 0.10.4. The method of claim 1 , wherein the crosslinked fluorescent latex is characterized by a peak reflectance value that is within ±2% of a peak reflectance value of the uncrosslinked fluorescent latex.5. The method of claim 1 , wherein the ...

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Номер записи: 37
25-03-2021 дата публикации

VENT CLEANING OF RUBBER MOLDS

Номер: US20210087343A1
Автор: Harrison Brian H., HOOPER HURDON A., Ness Mathew
Принадлежит:

Vents and micro-structures of rubber molds may become clogged with rubber that is difficult to remove. These vents and micro-structures can be cleaned of rubber, even if heat aged, by subjecting the mold to high temperatures in the presence of a solvent to devulcanize any rubber present. If the rubber used with the mold being cleaned includes carbon black, a solvent may be used to dissolve the devulcanized polymer, leaving the carbon black which can be removed by water jets or other cleaning means. 1. A method of removing vulcanized rubber having filler from a structure comprising:subjecting the structure and the vulcanized rubber to a high temperature of between 250° C. and 320° C. in the presence of a devulcanization solvent for a reaction time sufficient to devulcanize the vulcanized rubber;subjecting the structure and devulcanized rubber to a dissolving solvent to dissolve rubber polymer from the devulcanized rubber; andremoving filler remaining from the vulcanized rubber from the structure.2. The method of claim 1 , further comprising pre-treating the structure and the vulcanized rubber with the devulcanization solvent.3. The method of claim 2 , wherein the pre-treating is carried out at an elevated temperature at about the boiling point of the devulcanization solvent.4. The method of claim 1 , wherein the vulcanized rubber on the structure comprises heat aged vulcanized rubber.5. The method of claim 1 , wherein the structure comprises one or more mold surfaces of a mold.6. The method of claim 5 , wherein at least one of the one or more mold surfaces comprises at least one of:a surface within a vent of the mold;a surface of a micro-slot vent of the mold;a surface of a micro-structure of the mold;a surface of a spring vent within the mold; anda surface between puzzle mold pieces.7. The method of claim 1 , wherein the devulcanization solvent and the dissolving solvent are the same solvent.8. The method of claim 7 , wherein the devulcanization solvent and the ...

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Номер записи: 38
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: 39
31-03-2016 дата публикации

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

Номер: US20160090464A1
Автор: FUKUMINE Yoshio
Принадлежит:

A nitrile rubber composition contains a carboxyl group-containing nitrile rubber with an iodine value of 120 or less (A) and bituminous coal (B). The bituminous coal (B) has a carbon purity of preferably 60 to 95 wt % and further has a volume average particle size of preferably 2 to 10 μm. It is possible to provide a nitrile rubber composition which can give a cross-linked rubber which is excellent in normal physical properties and further is superior in compression set resistance and oil resistance (in particular, oil resistance to lubricating oil and fuel oil). 1. A nitrile rubber composition containing a carboxyl group-containing nitrile rubber (A) with an iodine value of 120 or less and bituminous coal (B).2. The nitrile rubber composition according to wherein the bituminous coal (B) has a carbon purity of 60 to 95 wt %.3. The nitrile rubber composition according to wherein the bituminous coal (B) has a volume average particle size of 2 to 10 μm.4. The nitrile rubber composition according to wherein the carboxyl group-containing nitrile rubber (A) contains α claim 1 ,β-ethylenically unsaturated nitrile monomer units claim 1 , carboxyl group-containing monomer units claim 1 , conjugated diene monomer units claim 1 , and (meth)acrylic acid alkoxyalkyl ester monomer units.5. The nitrile rubber composition according to wherein an amount of the bituminous coal (B) with respect to 100 parts by weight of the carboxyl group-containing nitrile rubber (A) is 50 to 300 parts by weight.61. A cross-linkable rubber composition containing the nitrile rubber composition according to claim in which a cross-linking agent (C) is mixed.7. The cross-linkable rubber composition according to wherein the cross-linking agent (C) is a polyamine cross-linking agent.8. The cross-linkable rubber composition according to further containing a basic cross-linking accelerator.9. The cross-linkable rubber composition according to further containing a plasticizer.10. A cross-linked rubber ...

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Номер записи: 40
30-03-2017 дата публикации

FLAME-RETARDANT, CROSS-LINKED EPDM RUBBER

Номер: US20170088679A1
Автор: Czaplewski Sarah K., Kuczynski Joseph, Wertz Jason T., Zhang Jing
Принадлежит:

In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber. 1. A process comprising:polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer andchemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material by a rind-opening reaction to form a flame-retardant, cross-linked EPDM rubber.2. The process of claim 1 , wherein the ethylene monomer includes chlorinated ethylene.3. The process of claim 1 , wherein the diene monomer includes 5-ethylidene-2-norbornene claim 1 , 5-propylidene-2-norbornene claim 1 , or a combination thereof.4. The process of claim 1 , wherein forming the EPDM terpolymer includes using a mixture of Cp.TiMeand B(CF)as a catalyst material.5. The process of claim 4 , wherein at least a portion of the catalyst material remains after formation of the flame-retardant claim 4 , cross-linked EPDM rubber.6. The process of claim 1 , further comprising chemically reacting a norbornene-based alcohol and a phosphinate material to form the norbornene-based phosphinate cross-linking material.7. The process of claim 6 , wherein the norbornene-based alcohol includes 5-norbornene-2-methanol.8. The process of claim 6 , wherein the phosphinate material includes 3-(hydroxyl(phenyl)phosphoryl)propanoic acid.912-. (canceled)13. A process comprising:polymerizing a mixture that includes a chlorinated ethylene monomer, a propylene monomer, and a diene monomer to form a chlorinated ethylene-propylene-diene (EPDM) terpolymer;chemically reacting a norbornene-based alcohol and a phosphinate ...

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Номер записи: 41
30-03-2017 дата публикации

MACHINE COMPONENT COMPOSED OF METAL AND RUBBER AND MANUFACTURING METHOD OF THE SAME

Номер: US20170089394A1
Автор: SATO Takahiko
Принадлежит: NAKANISHI METAL WORKS CO., LTD.

The present invention is intended to provide a machine component composed of metal and rubber that results in no increase of material costs for an adhesive or increase of manufacturing costs for metal molding, causes no contamination of the metal mold or generates no foreign matter on the metal mold due to adhesion of the adhesive at the time of molding, causes no failure by separation of the adhesive from a fitting portion at the time of fitting the metal component, and is clean and favorable in appearance. A machine component composed of metal and rubber is formed by applying a thermoset resin adhesive A to a surface of a metal component of a predetermined shape, and vulcanizing and adhering a rubber of a predetermined shape to part of the surface of the metal component by metal molding. 1. A machine component composed of metal and rubber that is formed by applying a thermoset resin adhesive to a surface of a metal component of a predetermined shape , and vulcanizing and adhering a rubber of a predetermined shape to part of the surface of the metal component by metal molding , whereinthe range of the adhesive applied to the surface of the metal component before the metal molding covers only a joint surface relative to the rubber.2. The machine component composed of metal and rubber according to claim 1 , whereinthe machine component composed of metal and rubber is a protective cover for a bearing device, anda seal as the rubber is vulcanized and adhered to the outer peripheral surface of a cup-shaped stainless-steel main body as the metal component.3. A manufacturing method of a machine component composed of metal and rubber claim 1 , comprising:an adhesive application step of applying a thermoset resin adhesive to a surface of a metal component of a predetermined shape; anda metal molding step of vulcanizing and adhering a rubber of a predetermined shape to part of the surface of the metal component, whereinat the adhesive application step, the adhesive is ...

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Номер записи: 42
19-03-2020 дата публикации

STRUCTURE

Номер: US20200087471A1
Автор: Fujioka Takashi, Honma Masato, Takebe Yoshiki
Принадлежит: Toray Industries, Inc.

Provided is a structure having excellent flexibility represented by elastic restoring from compression or tensile elongation at break, and excellent lightness. A structure according to the present invention includes reinforced fibers, first plastic, and second plastic that exhibits rubber elasticity at room temperature, the reinforced fibers being discontinuous fibers, and the first plastic and/or the second plastic coating a crossing point between the reinforced fibers in contact with each other. 1. A structure comprising reinforced fibers , first plastic , and second plastic that exhibits rubber elasticity at room temperature ,the reinforced fibers being discontinuous fibers, andthe first plastic and/or the second plastic coating a crossing point between the reinforced fibers in contact with each other.2. The structure according to claim 1 , comprising voids and having a density of 0.01 g/cmor more and 1.3 g/cmor less.3. The structure according to claim 2 , having a volume content of the voids in a range of 10 vol % or more and 97 vol % or less.4. The structure according to claim 1 , having an elastic restoring from 50% compression of 1 MPa or more.5. The structure according to claim 1 , having a tensile elongation at break in a range of 1% or more and 20% or less.6. The structure according to claim 1 , wherein the reinforced fibers have a tensile elongation at break in a range of 1% or more and 10% or less.7. The structure according to claim 1 , wherein the reinforced fibers contain at least one selected from the group consisting of PAN-based carbon fibers claim 1 , PITCH-based carbon fibers claim 1 , glass fibers claim 1 , and aramid fibers.8. The structure according to claim 1 , wherein the first plastic and/or the second plastic coating the crossing point between the reinforced fibers has a coating thickness in a range of 1 μm or more and 15 μm or less.9. The structure according to claim 1 , wherein the second plastic has a tensile elongation at break of 200% ...

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Номер записи: 43
01-04-2021 дата публикации

METHOD FOR PRODUCING RECYCLED MATERIAL, AND TIRE AND METHOD FOR PRODUCING TIRE

Номер: US20210095210A1
Автор: Iwasa Koichiro
Принадлежит:

There is provided a method for producing a recycled material, whereby a recycled material can be efficiently obtained from a tire. The method for producing a recycled material according to the present invention includes a step of subjecting a tire to a gasification treatment to generate a gas containing a C1 gas from the tire, and a step of obtaining a recycled material containing at least one species selected from the group consisting of isoprene, butadiene, a butanediol compound, a butanol compound, a butenal compound, succinic acid, and polymers of these compounds by using the gas containing the C1 gas. 111-. (canceled)12. A method for producing a tire , the method comprising: a step of subjecting a tire to a gasification treatment to generate a gas comprising a C1 gas from the tire , a step of obtaining a recycled tire material comprising at least one species selected from the group consisting of isoprene , butadiene , and polymers of these compounds by using the gas comprising the C1 gas , and a step of obtaining a tire by using the recycled tire material.13. The method for producing a tire according to claim 12 , wherein the tire to be used for the gasification treatment is a waste tire.14. The method for producing a tire according to claim 12 , wherein the gas comprising the C1 gas comprises COgas and hydrogen gas and x in the COgas is 1≤x≤2.151. The method for producing a tire according to claim 13 , wherein the gas comprising the C gas comprises COgas and hydrogen gas and x in the COgas is 1≤x≤2.16. The method for producing a tire according to claim 12 , wherein the step of obtaining a recycled tire material is a step of synthesizing isoprene by growing a microbial catalyst prepared by introducing a nucleic acid capable of coding isoprene synthase into a Clostridium microorganism in the presence of the resulting gas containing the C1 gas and hydrogen gas to obtain a recycled tire material comprising at least one species selected from the group consisting of ...

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Номер записи: 44
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: 45
12-04-2018 дата публикации

FLAME-RETARDANT CROSS-LINKED EPDM RUBBER

Номер: US20180100042A1
Автор: Czaplewski Sarah K., Kuczynski Joseph, Wertz Jason T., Zhang Jing
Принадлежит:

In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber. 1. A process comprising:polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer; andchemically reacting the EPDM terpolymer with a norbornene-based phosphinate material to form a flame-retardant EPDM rubber.2. The process of claim 1 , wherein the ethylene monomer includes chlorinated ethylene.3. The process of claim 1 , wherein the diene monomer includes 5-ethylidene-2-norbornene claim 1 , 5-propylidene-2-norbornene claim 1 , or a combination thereof4. The process of claim 1 , wherein forming the EPDM terpolymer includes using a mixture of Cp*TiMeand B(CF)as a catalyst material.5. The process of claim 4 , wherein at least a portion of the catalyst material remains after formation of the flame-retardant EPDM rubber.6. The process of claim 1 , further comprising chemically reacting a norbornene-based alcohol and a phosphinate material to form the norbornene-based phosphinate material.7. The process of claim 6 , wherein the norbornene-based alcohol includes 5-norbornene-2-methanol.8. The process of claim 6 , wherein the norbornene-based phosphinate material includes 3-(hydroxyl(phenyl)phosphoryl)propanoic acid.9. A process comprising:polymerizing a mixture that includes a chlorinated ethylene monomer, a propylene monomer, and a diene monomer to form a chlorinated ethylene-propylene-diene (EPDM) terpolymer;chemically reacting a norbornene-based alcohol and a phosphinate material to form a norbornene-based phosphinate material; andchemically reacting the ...

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Номер записи: 46
21-04-2016 дата публикации

IONOMER COMPRISING PENDANT VINYL GROUPS AND PROCESSES FOR PREPARING SAME

Номер: US20160108140A1
Автор: ADKINSON Dana K., Davidson Gregory J.E., MALMBERG Sean, RAWSKI Jacob
Принадлежит: Lanxess Butyl Pte. Ltd.

The present invention relates to ionomers comprising a reaction product of the reaction between a) a halogenated isoolefin copolymer and b) a nucleophile having no pendant vinyl group and a nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers. 1. An ionomer comprising a reaction product of a reaction between:a) halogenated isoolefin copolymer; andb) nucleophiles comprising at least one first nucleophile having no pendant vinyl group, and at least one second nucleophile comprising at least one pendant vinyl group;wherein a ratio of the first nucleophile to the second nucleophile is 4:1 to 100:1.2. (canceled)3. The ionomer of claim 1 , wherein a total amount of the first and second nucleophiles in the reaction is less than 5 phr.4. (canceled)5. The ionomer of claim 1 , wherein the halogenated isoolefin copolymer comprises repeating units derived from at least one isoolefin monomer claim 1 , and repeating units derived from one or more multiolefin monomers.6. The ionomer of claim 5 , wherein one or more of the repeating units derived from the multiolefin monomers comprise an allylic halogen moiety.7. The ionomer of claim 5 , further comprising repeating units derived from a co-monomer.8. The ionomer of claim 7 , wherein the co-monomer is a C-Cor halogen substituted styrene.9. The ionomer of claim 5 , wherein:{'sub': 4', '8, 'the isoolefin monomer comprises a Cto Cisomonoolefin monomer; and'}the one or more multiolefin monomers are selected from C4-C16 conjugated diolefins.10. The ionomer of claim 5 , wherein:the isomonoolefin monomer comprises isobutylene; andthe conjugated diolefin is isoprene.11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. The ionomer of claim 1 , wherein:the ratio of the first nucleophile to the second nucleophile is 4:1 to 50:1;the total amount of the first and second nucleophiles in the reaction is about 1 to about 4 phr;the ...

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Номер записи: 47
23-04-2015 дата публикации

METHOD FOR PRODUCING RUBBER COMPOSITION AND RUBBER COMPOSITION

Номер: US20150111998A1
Автор: KAWAMOTO Keiichi, NIIHARA Kenichi, Noguchi Toru, Ueki Hiroyuki
Принадлежит:

A method for producing a rubber composition include a mixing step, a drying step, and a dispersion step. In the mixing step, an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers is mixed with rubber latex to obtain a first mixture. In the drying step, the first mixture is dried to obtain a second mixture. In the dispersion step, the second mixture is tight-milled using an open roll to obtain a rubber composition. The rubber composition does not include an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers, and has a diameter of 0.1 mm or more. 1. A method for producing a rubber composition comprising:a mixing step that mixes an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers with rubber latex to obtain a first mixture;a drying step that dries the first mixture to obtain a second mixture; anda dispersion step that tight-mills the second mixture using an open roll to obtain a rubber composition.2. The method for producing a rubber composition as defined in claim 1 ,wherein the aqueous solution includes at least one of the oxycellulose fibers and the cellulose nanofibers in a ratio of 0.1 to 10 mass %.3. The method for producing a rubber composition as defined in claim 2 ,wherein the dispersion step tight-mills the second mixture that includes at least one of the oxycellulose fibers and the cellulose nanofibers in an amount of 0.1 to 60 parts by mass based on 100 parts by mass of rubber, using the open roll at a roll distance of 0 to 0.5 mm and a roll temperature of 0 to 50° C.4. The method for producing a rubber composition as defined in claim 1 ,wherein the mixing step is performed using a roll mixing method.5. The method for producing a rubber composition as defined in claim 1 ,wherein the oxycellulose fibers have an average fiber diameter of 10 to 30 micrometers, andthe cellulose nanofibers have an average fiber diameter of 1 to 200 nm.6. ...

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Номер записи: 48
28-04-2016 дата публикации

Recycled rubber product and methods

Номер: US20160115304A1
Автор: Gregory Cobb MERRILL, Shahram Reza Shafie
Принадлежит: GREEN SOURCE HOLDINGS LLC

Devulcanized rubber products having uniform structural properties similar to that of virgin rubber and final vulcanized recycled rubber products having properties similar to vulcanized rubber products made using solely virgin rubber as the rubber input.

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Номер записи: 49
18-04-2019 дата публикации

METHOD FOR PRODUCING A PROPHYLACTIC ARTICLE

Номер: US20190112436A1
Автор: HOLZNER Armin, Kern Wolfgang, MANHART Jakob Cornelius, SAHIN Melahat, SCHALLER Raimund, SCHLOEGL Sandra
Принадлежит: SEMPERIT AKTIENGESELLSCHAFT HOLDING

The invention relates to a method for the manufacture of a prophylactic article, especially of a glove, from a (carboxylated) diene rubber, according to which a layer of a (carboxylated) diene latex is applied on a former and the (carboxylated) diene latex is cross-linked with a cross-linking agent, which is immobilized on inorganic and/or organic particles with formation of modified particles, and the modified particles are added to the (carboxylated) diene latex. 114-. (canceled)15. A method for the manufacture of a prophylactic article , especially of a glove , from a (carboxylated) diene rubber , according to which a 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 the cross-linking agent is immobilized on inorganic and/or organic particles with formation of modified particles , and the modified particles are added to the (carboxylated) diene latex and wherein exclusively the modified particles are used as cross-linking agents.16. The method according to claim 15 , wherein silicate-based particles are used as inorganic particles.17. The method according to claim 16 , wherein the silicate-based particles are selected from a group consisting of silicates with multivalent cations claim 16 , zeolites claim 16 , SiOas well as mixtures thereof.18. The method according to claim 17 , wherein a natural zeolite is used as the zeolite particles.19. The method according to claim 18 , wherein a zeolite selected from a group consisting of clinoptilolite claim 18 , chabasite claim 18 , phillipsite and analcime as well as mixtures thereof is used as natural zeolite.20. The method according to claim 15 , wherein the particles are modified with an excess of cross-linking agent for formation of a multiple-layer structure of the cross-linking agent on the particles.21. The method according to claim 15 , wherein the cross-linking of the (carboxylated) diene latex molecules is achieved ...

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Номер записи: 50
13-05-2021 дата публикации

Curative

Номер: US20210139644A1
Автор: Aaron Kenneth Amstutz, Albert C. PIERZ, Ian T. PIERZ, Luke Michael Haverhals, Nima Ezatollah Amini, Skylar Clement
Принадлежит: Natural Fiber Welding Inc

A coating created entirely from plant-derived ingredients is disclosed. Illustrative embodiments of the coating may be particularly well suited for use on leather-like materials created from epoxidized natural rubber-based formulations. Illustrative embodiments of the coating created may be comprised of substantially the reaction product between epoxidized vegetable oil and a polyfunctional naturally occurring acid (such as citric acid). Illustrative embodiments this reaction product may be used to produce porosity-free castable resins and vulcanize rubber formulations based on epoxidized natural rubber. Materials made from disclosed materials may be advantageously used as leather substitutes.

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Номер записи: 51
09-04-2020 дата публикации

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

Номер: US20200109270A1
Автор: BERTO Pierre, GRELIER Stéphane, PERUCH Frédéric
Принадлежит:

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

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Номер записи: 52
25-08-2022 дата публикации

HEAT DISSIPATION SHEET, METHOD FOR MANUFACTURING SAME, AND ELECTRONIC DEVICE INCLUDING SAME

Номер: US20220267660A1
Автор: LEE Jin Hyoung
Принадлежит:

Disclosed is a heat dissipation sheet. The heat dissipation sheet according to an embodiment of the present invention is implemented to include a matrix formed of a main resin including a rubber-based resin, and a heat dissipation filler dispersed in the matrix and having a modified surface. Accordingly, as the compatibility between dissimilar materials forming the heat dissipation sheet increases, the heat dissipation performance is more improved. In addition, although it is designed to have excellent heat dissipation performance, the cracking, shrinkage, and pore generation of the sheet can be minimized or prevented, so that the sheet can have excellent flexibility. 1. A heat dissipation sheet comprising:a matrix including a crosslinked rubber-based resin; anda heat dissipation filler which is dispersed in the matrix and of which surface is modified with a silane compound.2. The heat dissipation sheet according to claim 1 , wherein the heat dissipation filler is provided in 90% by weight or more based on a total weight of the matrix and the heat dissipation filler.3. The heat dissipation sheet according to claim 1 , wherein the heat dissipation filler includes the heat dissipation filler having a resistance of 1×10Ω or more.4. The heat dissipation sheet according to claim 1 , wherein the heat dissipation filler includes the heat dissipation filler having a dielectric constant of 10 or less at a frequency of 28 GHz.5. The heat dissipation sheet according to claim 1 , wherein the heat dissipation filler has an average particle diameter of 20 to 40 μm.6. The heat dissipation sheet according to claim 1 , wherein the rubber-based resin includes one or more selected from the group consisting of isoprene rubber (IR) claim 1 , butadiene rubber (BR) claim 1 , styrene-butadiene rubber (SBR) claim 1 , ethylene propylene diene monomer (EPDM) rubber claim 1 , acrylic rubber claim 1 , nitrile-butadiene rubber (NBR) and silicone rubber.7. The heat dissipation sheet according to ...

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Номер записи: 53
16-04-2020 дата публикации

CROSS-LINKED RUBBER AND PRODUCTION METHOD THEREFOR

Номер: US20200115512A1
Автор: ATA Seisuke, HATA Kenji, KOMATSU Anna, Komatsu Masaaki, TOMONOH Shigeki
Принадлежит:

Provided is a cross-linked rubber that can improve long-term sealing properties of a seal member in high-temperature and high-pressure environments. The cross-linked rubber is obtained through cross-linking of a cross-linkable rubber composition containing a fluororubber, carbon black, one or more carbon nanotubes, and an organic peroxide cross-linker, and has a 50% modulus of 5 MPa or more, a compression set (230° C., 500 hours) of 80% or less, and a rate of change of elongation at break between before and after a heat aging test (230° C., 72 hours) of not less than −10% and not more than 10%. 1. A cross-linked rubber obtained through cross-linking of a cross-linkable rubber composition comprising a fluororubber , carbon black , one or more carbon nanotubes , and an organic peroxide cross-linker , whereinthe cross-linked rubber has:a 50% modulus of 5 MPa or more;a compression set under conditions of 230° C. and 500 hours of 80% or less; anda rate of change of elongation at break between before and after a heat aging test under conditions of 230° C. and 72 hours of not less than −10% and not more than 10%.2. The cross-linked rubber according to claim 1 , wherein the carbon black includes coal having a carbon content of not less than 60 mass % and not more than 90 mass %.3. The cross-linked rubber according to claim 2 , wherein the coal is contained in a proportion of not less than 0.5 parts by mass and less than 5 parts by mass per 100 parts by mass of the fluororubber.4. The cross-linked rubber according to claim 2 , wherein the coal is bituminous coal.5. The cross-linked rubber according to claim 1 , having a breaking strength of 23 MPa or more.6. The cross-linked rubber according to claim 1 , wherein the fluororubber has a glass-transition temperature of −7° C. or lower.7. The cross-linked rubber according to claim 1 , wherein the carbon nanotubes are contained in a proportion of not less than 0.4 parts by mass and less than 10 parts by mass per 100 parts by mass ...

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Номер записи: 54
23-04-2020 дата публикации

RUBBER-REINFORCING CORD AND RUBBER PRODUCT USING SAME

Номер: US20200123333A1
Автор: YAMAGUCHI Tatsuya
Принадлежит:

A rubber-reinforcing cord of the present invention is a rubber-reinforcing cord for reinforcing a rubber product. The rubber-reinforcing cord includes at least one strand. The strand includes at least one filament bundle and a coating provided to cover at least a portion of a surface of the filament bundle. The coating includes a rubber component and a crosslinking agent. The crosslinking agent includes two or more isocyanate compounds. 1. A rubber-reinforcing cord for reinforcing a rubber product , the rubber-reinforcing cord comprising: at least one strand , whereinthe strand comprises at least one filament bundle and a coating provided to cover at least a portion of a surface of the filament bundle,the coating comprises a rubber component and a crosslinking agent, andthe crosslinking agent comprises two or more isocyanate compounds.2. The rubber-reinforcing cord according to claim 1 , wherein the two or more isocyanate compounds comprise at least one selected from the group consisting of a blocked isocyanate and a diisocyanate.3. The rubber-reinforcing cord according to claim 1 , wherein the two or more isocyanate compounds comprise a first blocked isocyanate and a second blocked isocyanate having a different dissociation temperature from the first blocked isocyanate.4. The rubber-reinforcing cord according to claim 1 , wherein the crosslinking agent further comprises a maleimide crosslinking agent.5. The rubber-reinforcing cord according to claim 1 , wherein the rubber component comprises at least one selected from the group consisting of hydrogenated nitrile rubber and carboxyl-modified hydrogenated nitrile rubber.6. The rubber-reinforcing cord according to claim 1 , wherein the coating is free of a resorcinol-formaldehyde condensate.7. A rubber product reinforced by the rubber-reinforcing cord according to .8. The rubber product according to claim 7 , being a rubber belt comprising matrix rubber and the rubber-reinforcing cord embedded in the matrix rubber. ...

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Номер записи: 55
19-05-2016 дата публикации

LOW SMOKE, FLEXIBLE INSULATION FOAM

Номер: US20160137801A1
Автор: BETTERMANN Miroslav, QUANTE Heribert, Zauner Christoph
Принадлежит: Armacell Enterprise GmbH & Co. KG

The present invention refers to an expanded polymeric material which consists of at least 300 phr, but less than 1000 phr ingredients in total, comprising 100 phr of at least two polymers, of which 1) An expanded polymeric material which consists of at least 300 phr , preferably at least 400 phr , but less than 1000 phr , preferably less than 850 phr , especially preferred less than 700 phr ingredients in total , comprising 100 phr of at least two polymers , of which1) at least 55 phr, preferably at least 65 phr is polyvinyl chloride (PVC) or vinyl chloride copolymer or vinyl chloride terpolymer or a mixture thereof and2) at least 10 phr, preferably at least 25 phr is at least one additional chlorinated organic polymer that is crosslinked by sulphur and/or metal oxides and/or thiadiazoles.2. The material according to claim 1 , wherein the vinyl chloride copolymer and/or vinyl chloride terpolymer comprises acetate or acrylate groups.3. The material according to claim 1 , wherein the vinyl chloride terpolymer is a vinyl chloride ethylene vinylacetate terpolymer (PVC/EVA terpolymer).4. The material according to claim 1 , wherein the additional chlorinated organic polymer is polychloroprene (CR) and/or chlorosulfonated polyethylene (CSM) and/or chlorobutyl rubber (CIIR) claim 1 , preferably polychloroprene (CR).5. The material according to claim 1 , comprising at least 3 phr claim 1 , preferably at least 5 phr of polybutadiene.6. The material according to claim 1 , comprising at least one plasticizer which is present in the formulation in at least 15 phr claim 1 , preferably at least 30 phr claim 1 , especially preferred at least 50 phr.7. The material according to claim 6 , wherein at least one plasticizer is a chlorinated plasticizer (chlorinated paraffin and/or chlorinated fatty acid substituted glycerin and/or chlorinated alpha-olefin) claim 6 , preferably a chlorinated plasticizer having a chlorine content of at least 20 wt % claim 6 , with respect to the weight of ...

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Номер записи: 56
18-05-2017 дата публикации

LATEX FORMULATION FOR MAKING ELASTOMERIC PRODUCTS

Номер: US20170137584A1
Автор: LIM KEUW WEI, TUNG Cian Ying, Wong Chong Ban
Принадлежит: TOP GLOVE SDN. BHD.

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

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Номер записи: 57
08-09-2022 дата публикации

Curative

Номер: US20220282031A1
Автор: Amstutz Aaron Kenneth, Amstutz Isaiah, Clement Skylar, Haverhals Luke Michael, Li Shang-Min
Принадлежит:

A curative for epoxidized plant-based oils and epoxidized natural rubber is created from the reaction between a naturally occurring polyfunctional acid and an epoxidized plant-based oil is disclosed. The curative may be used to produce at least one of six different materials, wherein each type of material may be configured as a thermosetting elastomer that is crosslinked with ß-hydroxyester linkages. The materials may be configured as a leather-like material, a foam material, a molded elastomer, a coating, an adhesive, and/or a rigid or semi-rigid material. Illustrative articles made from any combination of the six materials may be recycled using a mechano-chemical process to de-crosslink the thermosetting elastomer. 1. An article comprising:a. a second material comprising said thermosetting elastomer that is crosslinked with ß-hydroxyester linkages, wherein said second material is defined as being a foam material with a glass transition temperature not greater than about 25° C. and a density less than 0.7 g/cc;b. a third material comprising said thermosetting elastomer that is crosslinked with ß-hydroxyester linkages, wherein said third material is defined as being a molded elastomer material with a glass transition temperature not greater than about 25° C., wherein said third material is three-dimensional in shape; and,c. a fifth material comprising said thermosetting elastomer that is crosslinked with ß-hydroxyester linkages, wherein said fifth material is defined as being an adhesive material with a glass transition temperature generally below room temperature, wherein said fifth material has a thickness of 1 mm or less, and wherein said fifth material is positioned between and bonded to said second material and said third material.2. The article according to further comprising a fourth material claim 1 , said fourth material comprising said thermosetting elastomer that is crosslinked with ß-hydroxyester linkages claim 1 , wherein said fourth material is defined ...

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Номер записи: 58
09-05-2019 дата публикации

Resilient surface coverings and methods of making and using thereof

Номер: US20190136002A1
Автор: Alexandre Proulx, Jean-Claude Mercier, Olivier Gagnon
Принадлежит: American Biltrite Canada Ltd

The present disclosure provides, among other things, surface coverings with a protective coat applied thereto a rubber material. As provided herein, in some embodiments, a surface covering has or includes an exposed surface that is no-wax. The present disclosure further provides methods of making, and methods of using. Such surface coverings have surprising and beneficial attributes. They are particularly advantageous as resistant to soiling and abrasion. These surface covering are also resistant to crumbling under load. Such surface coverings would be useful as flooring products with desirable properties. In particular, such abrasion and soil resistant surfaces could be useful as a rubber flooring product.

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Номер записи: 59
09-05-2019 дата публикации

HEAT-CONDUCTING FOAM SHEET FOR ELECTRONIC INSTRUMENTS AND HEAT-CONDUCTING LAMINATE FOR ELECTRONIC INSTRUMENTS

Номер: US20190136004A1
Автор: KATO Tetsuhiro, KURINO Yukinori, SHIMONISHI Koji
Принадлежит:

Provided is a heat conductive foam sheet for electronic equipment sufficiently thin and flexible to be suitably used in the interior of electronic equipment and excellent in heat conductivity. A heat conductive foam sheet for electronic equipment containing a heat conductor in an elastomer resin portion constituting the foam sheet, in which the content of the heat conductor relative to 100 parts by mass of the elastomer resin is 100 to 500 parts by mass, the 25% compressive strength of the foam sheet is 200 kPa or less and the thickness thereof is 0.05 to 1 mm. 114-. (canceled)15. A heat conductive laminate for electronic equipment , which has a heat conductive sheet having a heat conductivity of 200 W/m·K or more on at least one of the surfaces of a foam sheet having a 25% compressive strength of 50 to 190kPa , a thickness of 0.05 to 1.0 mm and an apparent density of 0.1 to 1.5 g/cm; and which has a thickness of 0.08 to 1.50 mm , wherein the foam sheet is constituted of a elastomer resin.16. The heat conductive laminate for electronic equipment according to claim 15 , wherein the elastomer resin constituting the foam sheet contains at least one heat conductive filler selected from the group consisting of aluminum oxide claim 15 , magnesium oxide claim 15 , boron nitride claim 15 , talc and aluminum nitride.17. The heat conductive laminate for electronic equipment according to claim 16 , wherein the content of the heat conductive filler relative to 100 parts by mass of the elastomer resin is 100 to 500 parts by mass.18. The heat conductive laminate for electronic equipment according to claim 15 , wherein the expansion ratio of the foam sheet is 1.5 to 6.19. The heat conductive laminate for electronic equipment according to claim 15 , wherein the heat conductive sheet is a sheet of one selected from copper claim 15 , aluminum and graphite.20. The heat conductive laminate for electronic equipment according to claim 15 , wherein the elastomer resin constituting the ...

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Номер записи: 60
26-05-2016 дата публикации

Pressure sensitive adhesive foam

Номер: US20160145406A1
Автор: Petra M. Stegmaier, Pierre Reinhard Bieber, Siegfried R. Goeb
Принадлежит: 3M Innovative Properties Co

The present disclosure relates to a pressure sensitive adhesive foam comprising a rubber-based elastomeric material and at least one hydrocarbon tackifier, wherein the hydrocarbon tackifier(s) have a Volatile Organic Compound (VOC) value of less than 1000 ppm and a Volatile Fogging Compound (FOG) value of less than 1500 ppm, when measured by thermogravimetric analysis according to the weight loss test methods described in the experimental section. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive foam and uses thereof.

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Номер записи: 61
25-05-2017 дата публикации

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

Номер: US20170145185A1
Автор: Chen Seong Fong, LOW CHI YIH, Wong Wei Cheong
Принадлежит: ALLEGIANCE CORPORATION

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

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Номер записи: 62
15-09-2022 дата публикации

Polymer composition, cross-linked product and tire

Номер: US20220289952A1
Автор: Masaaki Inoue
Принадлежит: Eneos Materials Corp

A polymer composition includes a polymer (A) having, when composition ratios (molar ratios) of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3), and a structural unit represented by formula (4) in the polymer (A) are p, q, r, and s, respectively, a value α represented by formula (i) of 0.60 or more:with a weight average molecular weight (Mw) of 1.0×105 to 2.0×106 in terms of polystyrene measured by gel permeation chromatography, and a carbon-carbon unsaturated bond; and a paraffin wax (B) having a melting point of 70° C. or more.

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Номер записи: 63
28-08-2014 дата публикации

Dispersion-coated wiper rubber

Номер: US20140237751A1
Автор: Nicolaas Gotzen, Reiner Lay
Принадлежит: ROBERT BOSCH GMBH

A process for the production of a wiper rubber, in particular for a windshield wiper, in which, in a step a), a wiper-rubber base ( 10 ) is formed from a natural and/or synthetic rubber, of which ( 10 ) at least a portion is coated with a natural- and/or synthetic-rubber dispersion ( 40 ) in a step b).

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Номер записи: 64
09-06-2016 дата публикации

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

Номер: US20160159992A1
Автор: Foo Khon Pu, Prabhakaran Kumaresan
Принадлежит: 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. 1. An elastomeric film-forming composition comprising:(a) a polymer component comprising a carboxylic acid- or ester-grafted polychlorobutadiene, and(b) one or more cross-linking agents,wherein the carboxylic acid or ester-grafted polychlorobutadiene contains carboxylic acid or ester grafting in an amount of from 0.01% to 8% by weight of chlorobutadiene units present in the carboxylic acid or ester-grafted polychlorobutadiene.2. The composition of claim 1 , wherein the polychlorobutadiene is selected from the group consisting of a polymer of 2-chloro-1 claim 1 ,3-butadiene claim 1 , a polymer of 2 claim 1 ,3-dichloro-1 claim 1 ,3-butadiene and copolymers comprising 2-chloro-1 claim 1 ,3-butadiene and 2 claim 1 ,3-dichloro-1 claim 1 ,3-butadiene.3. The composition of claim 1 , wherein the carboxylic acid or ester-grafted polychlorobutadiene comprises from 10 to 60% chlorine by weight of the chlorobutadiene units present in the carboxylic acid or ester-grafted polychlorobutadiene.4. The composition of claim 1 , wherein a concentration of total solids in the composition is between 5-60% by weight of the composition.5. The composition of claim 1 , wherein the cross-linking agent is selected from the group consisting of carbamates claim 1 , thiocarbamates claim 1 , thiurams claim 1 , thiourea claim 1 , thiazoles claim 1 , guanidines claim 1 , aldehyde/amine-based accelerators claim 1 , ionic cross-linking agents claim 1 , organic and inorganic metal oxides claim 1 , organic and inorganic metal hydroxides claim 1 , organic and inorganic peroxides claim 1 , covalent cross-linking agents claim 1 , sulphur claim 1 , crosslinking monomers claim 1 , reactive oligomers claim 1 , polyisocyanate ...

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Номер записи: 65
07-06-2018 дата публикации

EXTRUDABLE PRESSURE SENSITIVE ADHESIVE COMPOSITION AND METHODS FOR PREPARING THE SAME

Номер: US20180155585A1
Автор: Fieldhouse John, Tang Jiansheng
Принадлежит:

A phase-separated polymeric composition is provided that comprises a first phase including polyurethane domains and a second phase including a butyl rubber matrix. A method is also provided for producing a polymer composition. The method includes providing a masterbatch composition that is prepared by combining a halogenated butyl rubber with at least one phenolic resin, introducing the masterbatch composition to a reactor, introducing to the reactor an isocyanate and a polyurethane catalyst to form a blend, and subjecting the blend to conditions sufficient to form a polyurethane. 1. A method for producing a polymer composition , the method comprising:i. providing a masterbatch composition that is prepared by combining a halogenated butyl rubber with at least one phenolic resin;ii. introducing the masterbatch composition to a reactor;iii. introducing to the reactor an isocyanate and a polyurethane catalyst to form a blend; andiv. subjecting the blend to conditions sufficient to form a polyurethane.2. The method of claim 1 , where the isocyanate is a diisocyanate.3. The method of claim 1 , where the polyurethane is in the form of discrete domains within a matrix formed by the butyl rubber up to temperatures of at least 100° C.4. The method of claim 1 , where the polyurethane is in the form of discrete domains within a matrix formed by the butyl rubber up to temperatures of at least 120° C.5. The method of claim 1 , further comprising the step of introducing an oil to the reactor.6. The method of claim 1 , further comprising the step of introducing a tackifier resin to the reactor.7. The method of claim 1 , where the polyurethane is cocontinuous with the butyl rubber at temperatures above 120° C.8. A phase-separated polymeric composition comprising:i. a first phase including polyurethane domains; andii. a second phase including a butyl rubber matrix, where the polyurethane includes mer units deriving from a phenolic resin and mer units deriving from a diisocyanate.9. ...

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Номер записи: 66
18-06-2015 дата публикации

Process for regenerating sulfur-crosslinked rubber vulcanizates to give regenerates

Номер: US20150166759A1
Автор: Carla Recker, Lena Mueller, Thomas Voelker
Принадлежит: CONTINENTAL REIFEN DEUTSCHLAND GMBH

A process for regenerating sulfur-crosslinked rubber vulcanizates to regenerates, wherein at least one regenerating agent is used in the regeneration. The regenerating agent is selected from the group consisting of dithiophosphoryl polysulfides and/or silanes having a polysulfane group. Regenerates which have been produced by means of the process lead to improved or equal rolling resistance indicators and a lower compression set in vulcanized rubber mixtures compared to regenerates known in the prior art.

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Номер записи: 67
29-09-2022 дата публикации

PROCESS FOR THE RECOVERY AND DEVULCANIZATION OF CROSS-LINKED RUBBER

Номер: US20220305697A1
Автор: Maris Gianfranco
Принадлежит:

A process for recovery and devulcanization of vulcanized rubber is provided. The process takes place in a plant including a mill for grinding vulcanized rubber into particles, a twin-screw extruder provided with a device for forced feeding of vulcanized rubber particles and a thermostatting device, a single-screw extruder arranged downstream of the twin-screw extruder and equipped with a thermostatting device, a filter for devulcanized rubber and an extrusion die shaped like a slot, from the which devulcanized rubber comes out in the form of a strip or sheet, and a cooling device for the devulcanized rubber strip or sheet. The twin-screw extruder operates at a temperature between 35 and 450° C., with a rotation speed of the screws between 15 and 600 rpm, and a torque density between 11 and 18 Nm/cm, so that the shear rate remains constant for the entire longitudinal extension of the twin-screw extruder. 1. A process for recovery and devulcanization of vulcanized rubber through the use of a plant comprising:a mill for grinding said vulcanized rubber into particles,a twin-screw extruder for devulcanization, provided with a device for forced feeding of vulcanized rubber particles and a thermostatting device,a single-screw extruder arranged downstream of said twin-screw extruder, and provided with a thermostatting device, a filter for devulcanized rubber and an extrusion die shaped like a slot, from which the devulcanized rubber comes out in the form of a strip or sheet, anda cooling device for the strip or sheet of devulcanized rubber,wherein said twin-screw extruder operates ata temperature between 35 and 450° C.,a screw rotation speed between 15 and 600 rpm, and{'sup': '3', 'a torque density between 11 and 18 Nm/cm, so that shear rate remains constant for an entire longitudinal extension of the twin-screw extruder.'}2. The process of claim 1 , wherein the ratio between an outer diameter and an inner diameter of screws of the twin-screw extruder is between 1.22 and 1. ...

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Номер записи: 68
06-06-2019 дата публикации

Wiper blade rubber

Номер: US20190168717A1
Автор: Hiroaki Ohsako, Kazuki Kawashima, Masaki Sakurai, Shuichi OHTSUBO, Yasuyuki Okamoto
Принадлежит: Fukoku Co Ltd

Provided is a wiper blade rubber which has excellent wiping properties and low friction properties with respect to both clean glass surfaces and glass surfaces that have been subjected to a water repellent treatment, and which maintains these properties for a long period of time. A wiper blade rubber which has a lip part wherein a coating layer is provided on a rubber substrate by (a) applying a first coating agent onto a part of the surface of the rubber substrate, (b) curing a first coating layer by heating the rubber substrate onto which the first coating agent is applied, (c) applying a second coating agent onto the surface of the rubber substrate which has the cured first coating layer and (d) drying the second coating agent. The present invention enables the achievement of a wiper blade rubber wherein: the coating layer contains the first coating layer and the second coating layer; and the first coating layer is affixed to a part of the rubber substrate and the second coating layer is affixed to another part of the rubber substrate in the lip part.

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Номер записи: 69
02-07-2015 дата публикации

METHOD FOR PRODUCING FLAME-RETARDANT THERMOPLASTIC ELASTOMER COMPOSITION

Номер: US20150183972A1
Автор: KUROKAWA Ryosuke, NATSUYAMA Nobuhiro
Принадлежит:

A flame-retardant thermoplastic elastomer composition is provided to produce a molded article possessing mechanical properties, flame retardancy and softness inherently possessed by a molted article obtained from a thermoplastic elastomer composition containing a mineral oil-based softening agent and a flame retardant and fails to stain a mold after injection molding. A production method includes step (1) obtaining a thermoplastic elastomer composition by dynamically crosslinking a polymer mixture (A) containing an ethylene-α-olefin-based copolymer rubber (A1) and a propylene-based polymer (A2) in the presence of a mineral oil-based softening agent (C) and a crosslinking agent (D), and step (2) kneading the thermoplastic elastomer composition, a halogen-free flame retardant (E), zinc oxide (F), and a thermoplastic resin with a polar group (G). The amounts of the components satisfy condition (p) when starting the dynamic crosslinking in step (1) and satisfy condition (q) when starting the kneading in step (2), respectively. 1. A method for producing a flame-retardant thermoplastic elastomer composition , wherein the method comprises:step (1) of obtaining a thermoplastic elastomer composition by dynamically crosslinking a polymer mixture (A) comprising an ethylene-α-olefin-based copolymer rubber (A1) and a propylene-based polymer (A2) in the presence of a mineral oil-based softening agent (C) and a crosslinking agent (D), andstep (2) of kneading the thermoplastic elastomer composition, a halogen-free flame retardant (E), zinc oxide (F), and a thermoplastic resin with a polar group (G), whereinthe amounts of the respective components at the time of starting the dynamic crosslinking in step (1) satisfy the following condition (p), andthe amounts of the respective components at the time of starting the kneading in step (2) satisfy the following condition (q), and whereincondition (p) requires that when the combined amount of the ethylene-α-olefin-based copolymer rubber ( ...

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Номер записи: 70
28-06-2018 дата публикации

METHOD FOR MANUFACTURING WET RUBBER MASTERBATCH, METHOD FOR MANUFACTURING RUBBER COMPOSITION, AND METHOD FOR MANUFACTURING TIRE

Номер: US20180179303A1
Автор: Nishimura Chiya
Принадлежит: TOYO TIRE & RUBBER CO., LTD.

A problem which is addressed is the provision of a method for manufacturing a wet rubber masterbatch that will serve as raw material for vulcanized rubber which excels in fatigue resistance, ability to achieve reduced heat generation, and tensile characteristics. 1. A method for manufacturing a wet rubber masterbatch satisfying Formula I , below , the method comprising:an operation in which a latex that comprises rubber particles for which 90 vol % particle diameter is not greater than 2 μm and that has magnesium present therein in an amount which is not greater than 150 ppm is prepared;an operation in which a liquid mixture is made; andan operation in which the liquid mixture is coagulated to obtain a coagulum;wherein the operation in which the liquid mixture is made comprises a step in which the latex and a dispersion solvent are mixed, and a step in which a latex solution obtained at the foregoing step and a slurry that contains filler are mixed;wherein the operation in which the coagulum is obtained comprises a step in which the coagulum is separated from a waste liquid; {'br': None, 'i': 'a/b≥', '65; and'}, 'wherein Formula I is given by'}wherein, at Formula I, a indicates COD of the waste liquid expressed in units of mg/L, and b indicates amount of rubber present in the liquid mixture expressed in units of mass %.2. The method for manufacturing the wet rubber masterbatch according to wherein the operation in which the latex is prepared comprises a step in which diammonium phosphate is added to latex raw material.3. The method for manufacturing the wet rubber masterbatch according to wherein pH of the latex is not less than 9.4. The method for manufacturing the wet rubber masterbatch according to wherein pH of the liquid mixture is not less than 7.5. A rubber composition manufacturing method comprising the method for manufacturing the wet rubber masterbatch according to .6. A tire manufacturing method comprising the method for manufacturing the wet rubber ...

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Номер записи: 71
13-06-2019 дата публикации

METHODS FOR TREATING INNER LINERS, INNER LINERS RESULTING THEREFROM AND TIRES CONTAINING SUCH INNER LINERS

Номер: US20190176422A1
Автор: Alexander Brian S., Griebel Jared J., Liao Kung-Ching, Plotner Bradley S., Widenor Ross W.
Принадлежит:

Methods for treating a cured inner liner as well as treated, cured inner liners resulting from such methods are disclosed. Also disclosed are tires containing the treated inner liners. The methods include treatment of the lower surface of inner liner surface with a rubber-containing liquid to produce a rubber-containing film thereupon. 120-. (canceled)21. A method for treating a cured inner liner for a tire comprising:a. providing a cured inner liner comprising rubber, a majority of which comprises butyl rubber (optionally halogenated), wherein the cured inner liner has an upper and a lower surface,b. treating the lower surface of the cured inner liner with a rubber-containing liquid wherein the rubber-containing liquid comprises at least one conjugated diene monomer-containing rubber, polyurethane and at least one solvent, andc. allowing the rubber-containing liquid to dry upon the treated surface of the cured inner liner, thereby producing a rubber-containing film upon the dried, treated surface.22. The method of claim 21 , wherein the rubber-containing film has a thickness of about 0.1 to about 25 micrometers.23. The method of claim 21 , wherein the lower surface of the cured inner liner of (a) further comprises a release treatment comprising polysiloxane moieties.24. The method of claim 21 , wherein the lower surface of the cured inner liner of (a) is essentially free of polysiloxane moieties.25. The method of claim 24 , wherein the film produced in (c) comprises an adhesive film.27. The method of claim 21 , wherein the rubber-containing liquid comprisesa. 100 parts of butyl rubber, halogenated butyl rubber, or a combination thereof, andb. 10-50 phr of polyurethane.28. The method of claim 21 , wherein the at least one solvent of the rubber-containing liquid meets at least one of the following:a. comprises a majority by weight of at least one hydrocarbon solvent; orb. comprises a majority by weight of at least one halogenated aromatic hydrocarbon solvent, at ...

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Номер записи: 72
29-06-2017 дата публикации

2-MERCAPTOIMIDAZOLINE-CONTAINING MASTERBATCH

Номер: US20170183458A1
Автор: KOMURASAKI Hideto, Uchida Kenichi
Принадлежит:

Provided is a 2-mercaptoimidazoline-containing masterbatch having exceptional properties for dispersing 2-mercaptimidazoline in a CR compound, and improved mold staining during molding. In the 2-mercaptoimidazoline-containing masterbatch, nitrile rubber is used as a binder material. A masterbatch containing 50-90 mass % of 2-mercaptoimidazoline and 10-50 mass % of nitrile rubber is preferred. 1. 2-mercaptoimidazoline-containing masterbatch using nitrile rubber as a binder material.2. 2-mercaptoimidazoline-containing masterbatch according to claim 1 , comprising50˜90 mass % of the 2-mercaptoimidazoline and 50˜10 mass % of the nitrile rubber.3. 2-mercaptoimidazoline-containing masterbatch according to claim 1 , comprisingthe nitrile rubber including 15˜40 mass % of acrylonitrile.4. 2-mercaptoimidazoline-containing masterbatch according to claim 2 , comprisingthe nitrile rubber including 15˜40 mass % of acrylonitrile. The present invention relates to 2-mercaptoimidazoline-containing masterbatch.2-mercaptoimidazoline is used mainly as a cross-linking accelerating agent of chloroprene rubber (referred as “CR” hereinafter). (For example, see Patent Document 1 and Patent Document 2.) An effect to be specially mentioned for adding 2-mercaptoimidazoline to a CR compound is to shorten cross-linking time as the cross-linking accelerating agent and at the same time, a cross-linking compound get excellent feature of a low permanent compression strain and high tensile strength.On the other hand, a CR compound is mixed and produced with direct vent kneader or double roller in the production process depending on the use. In such a production process, 2-mercaptoimidazoline has high melting point, higher than 190 degrees, making it difficult to be melted in the kneading process at normal temperature between 80 and 150 degrees for kneading process. Therefore, 2-mercaptoimidazoline needs to remain in a good dispersion state as powder in the CR compound.However, when a producer makes ...

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Номер записи: 73
29-06-2017 дата публикации

Algae-derived antimicrobial plastic substrates, and a method of manufacturing the same

Номер: US20170183469A1
Автор: Mark Ashton ZELLER, Robert Falken, Ryan Hunt
Принадлежит: Bloom Health Holdings LLC

This document presents algae-derived antimicrobial plastic substrates, and a method of making the same. The plastic is preferably synthetic, but can also be formed as a bioplastic (e.g., polylactic acid). In various implementations, an algae-derived antimicrobial plastic substrate can be made to have similar properties and characteristics of nylon, nylon-6, nylon 6-6 polymer, and/or the like, and yet contain antimicrobial substances. Any of various species of red algae, brown algae, and brown seaweed (marine microalgae and/or macroalgae) are known to contain a high level of sulfated polysaccharides with inherent antimicrobial properties, and can be used as described herein.

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Номер записи: 74
06-07-2017 дата публикации

Microcellular foamed nanocomposite and preparation method thereof

Номер: US20170190862A1
Автор: Dae-Up Ahn, Jun-Bae Jeon, Seong-jin Kim
Принадлежит: Nexans SA

A microcellular foaming nanocomposite includes an elastomeric polymer; a nanofiller; at least two of amphiphilic dispersing agents; a chemical blowing agent; an activator for chemical blowing agent; and a crosslinking agent. The present arrangement also relates to a preparation method of a microcellular foamed nanocomposite.

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Номер записи: 75
06-07-2017 дата публикации

System and Method for Flexible Sealant With Density Modifier

Номер: US20170190864A1
Автор: Kocurek Devin, Kocurek Sandra, Perriello Jonathan
Принадлежит: Polymer Adhesive Sealant Systems, Inc.

The disclosed latex system comprises a one-component, closed-cell, semi-foam, mastic sealant using gas-filled, flexible, organic microspheres to create a product that is elastic and compressible under pressure without protruding in an outward direction when compressed, thereby allowing the applied sealant to compress in an enclosed, maximum-filled channel unlike typical mastic sealants (while retaining the ability to rebound). This allows the sealant to function as a gasket, and, once fully cured, to have properties including vibration damping, insulating, and condensation resistance. The sealant can be formulated as an air barrier or a vapor barrier and at various degrees of moisture resistance. It may be applied by different packaging variations including aerosol can (bag in can or bag on valve), airless sprayer, cartridge tubes, foil tubes, squeeze tubes, and buckets to be applied using a brush, trowel, spatula, etc. The disclosed mastic sealant can also be formulated to be smoke-resistant and flame-resistant. 1. A sealant composition comprising:a. up to about 80 vol % of a polymeric dispersion;b. from about 20 vol % to about 65 vol % of a density modifier; andc. from about 0 vol % to about 10 vol % of one or more additives.2. The sealant composition of claim 1 , wherein the sealant composition is configured to be packaged in one or more of aerosol cans claim 1 , cartridge tubes claim 1 , foil tubes claim 1 , squeeze tubes claim 1 , buckets claim 1 , or combinations thereof.3. The sealant composition of claim 1 , wherein the density modifier includes microspheres comprising an outer shell encapsulating a gas.4. The sealant composition of claim 3 , wherein the outer shell is a thermoplastic polymer selected from the group consisting of acrylonitrile claim 3 , acrylonitrile copolymers with other acrylics claim 3 , methylmethacrylate claim 3 , vinylidene chloride claim 3 , and combinations thereof.5. The sealant composition of claim 3 , wherein the outer shell is ...

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Номер записи: 76
30-07-2015 дата публикации

Vulcanization composition having reduced allergenic potential, and elastomeric articles formed therewith

Номер: US20150210880A1
Автор: Chii Yih Low, Seong Fong Chen, Wei Cheong Wong
Принадлежит: Allegiance Corp

The present invention generally relates to vulcanization compositions used to vulcanize elastomeric articles, where the vulcanization compositions have reduced allergenic potential as compared to elastomeric articles formed using vulcanization compositions having non-fugitive accelerators. The present invention also relates to elastomeric articles formed using the vulcanization compositions. The invention further relates to methods for making a reduced-allergenicity vulcanization composition, and to methods for using the vulcanization compositions to vulcanize elastomeric articles.

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Номер записи: 77
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: 78
18-06-2020 дата публикации

Process for regenerating a monolithic, macro-structural, inter-penetrating elastomer network morphology from ground tire rubber particles

Номер: US20200190297A1
Автор: William B. Coe
Принадлежит: Individual

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

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Номер записи: 79
27-06-2019 дата публикации

Vulcanization composition for unsaturated polymers

Номер: US20190194424A1
Автор: Isabelle Yarzabal, Pierre Lugez, Thierry Aubert
Принадлежит: MLPC International SA

The present invention relates to the field of vulcanization of unsaturated polymers, in particular halogenated, and more particularly chlorinated, unsaturated polymers, such as, for example, polychloroprene, using as vulcanization agent a mixture of bis(2,5-dimercapto-1,3,4-thiadiazole) and at least one organic base. The present invention relates to the process for vulcanization of said polymers with said vulcanization mixture.

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Номер записи: 80
19-07-2018 дата публикации

PROCESSES FOR PRODUCING WET RUBBER MASTERBATCH AND RUBBER COMPOSITION

Номер: US20180201741A1
Автор: Tanaka Makoto
Принадлежит: TOYO TIRE & RUBBER CO., LTD.

A process for producing a wet rubber masterbatch yielded by using, as raw materials, at least a filler, a dispersing solvent, and a rubber latex solution, comprises a step (i) of mixing the filler, the dispersing solvent and the rubber latex solution with each other to produce a filler-containing rubber latex solution, a step (ii) of solidifying the filler-containing rubber latex solution to produce a filler-containing rubber solidified product, and a step (iii) of dehydrating the filler-containing rubber solidified product to produce the wet rubber masterbatch. At the time of representing the temperature of the filler-containing rubber solidified product before the dehydration in the step (iii) by T1 (° C.), and representing the temperature of the filler-containing rubber solidified product after the dehydration by T2 (° C.), the following expressions (1) and (2) are satisfied: 1. A process for producing a wet rubber masterbatch yielded by using , as raw materials , at least a filler , a dispersing solvent , and a rubber latex solution , comprising:a step (i) of mixing the filler, the dispersing solvent and the rubber latex solution with each other to produce a filler-containing rubber latex solution, a step (ii) of solidifying the filler-containing rubber latex solution to produce a filler-containing rubber solidified product, and a step (iii) of dehydrating the filler-containing rubber solidified product to produce the wet rubber masterbatch, [{'br': None, 'i': 'T', '1≤100\u2003\u2003(1)'}, {'br': None, 'i': T', 'T, '80≤2−1≤160\u2003\u2003(2).'}], 'wherein at the time of representing the temperature of the filler-containing rubber solidified product before the dehydration in the step (iii) by T1 (° C.), and representing the temperature of the filler-containing rubber solidified product after the dehydration by T2 (° C.), the following expressions (1) and (2) are satisfied2. The wet rubber masterbatch producing process according to claim 1 , wherein the step (iii) ...

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Номер записи: 81
26-07-2018 дата публикации

Rubber composition for vulcanization molding, process for manufacturing the same and application thereof

Номер: US20180208733A1
Автор: Katsushi Miki, Naoya TAYAGAKI
Принадлежит: Matsumoto Yushi Seiyaku Co Ltd

A rubber composition for vulcanization molding which can be manufactured into a rubber product with good dimensional stability, good appearance and sufficiently light weight, a process for manufacturing the same, and applications thereof. A rubber composition for vulcanization molding containing hollow particles and a base rubber, wherein the hollow particles are composed of a thermoplastic resin shell and a thermally vaporizable blowing agent encapsulated therein and have a specified further expansion ratio, and the base rubber has a Mooney viscosity ML (1+4) ranging from 5 to 90 at 100° C. Also disclosed is a process for manufacturing the rubber composition, hollow particles used for manufacturing the rubber composition, a masterbatch including the hollow particles and a rubber product manufactured from the rubber composition.

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Номер записи: 82
25-06-2020 дата публикации

DETECTABLE AND MULTI DETECTABLE ARTICLES

Номер: US20200199311A1
Автор: Balakrishna Nurshamila Binti Shaari, Foo Khon Pu, Lim Chin Keong
Принадлежит: SKINPROTECT CORPORATION SDN BHD

This application relates to elastomeric articles such as gloves, compositions for producing the articles and methods for their manufacture. The elastomeric articles contain particles for detectability of the articles (or portions thereof) by metal detectors and/or x-ray detectors. The articles may contain two different types of particles—one particle type is selected from magnetic particles, highly conductive particles or a combination, and the second particle type is particles containing one or more high atomic mass elements (with an atomic mass of at least 132). The particles may be coated by a corrosion inhibitor coating, or they may be uncoated. The compositions for producing the articles may contain a viscosity modifier. 2. The elastomeric article of claim 1 , wherein a portion of the article of 5.0 mmor 1.0 mmis detectable by both a metal detector and x-ray detector.3. The elastomeric article of claim 1 , wherein the article has a thickness in the range of 0.01 mm-3 mm.4. The elastomeric article of claim 1 , with a modulus at 500% elongation of between 1.0 and 25 MPa.5. The elastomeric article of claim 1 , with an elongation at break of at least 100% claim 1 , or at least 200% claim 1 , or at least 300% claim 1 , or at least 400% or at least 500%.6. The elastomeric article of claim 1 , wherein the article comprises said magnetic particles and the magnetic particles have an average particle size based on the mean diameter of less than 5 μm claim 1 , or less than 2 μm.7. The elastomeric article of claim 1 , wherein the particles containing one or more high atomic mass elements are selected from the group consisting of particles of barium compounds; particles of bismuth compounds claim 1 , particles of tungsten metal or tungsten compounds claim 1 , or mixtures of one or more thereof.8. The elastomeric article of claim 1 , wherein the ratio of particles (a) to particles (b) is between 1:99 and 99:1.9. The elastomeric article of claim 1 , wherein the total amount ...

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Номер записи: 83
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: 84
23-10-2014 дата публикации

Composition for sportswear and foam thereof

Номер: US20140316021A1
Автор: Koshiro Hamaguchi, Motoki Kitagawa, Tadahiro Ono, Taro Ozaki, Toshiyuki Funayama, Toyofumi Otaka
Принадлежит: Daiso Co Ltd

A composition for sportswear, includes a rubber component (a) which contains an epihalohydrin rubber, a vulcanizing agent (b) in an amount of 0.1 to 10 parts by weight for 100 parts by weight of the rubber component (a), and a foaming agent (c) in an amount of 0.5 to 20 parts by weight therefor. The composition for sportswear is preferably includes a colorant (d).

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Номер записи: 85
09-08-2018 дата публикации

COATING MATERIAL AND LAMINATE

Номер: US20180223116A1
Автор: KAGAWA Michiru, Kubota Kouji, NANBA Yoshinori, OYA Akiko, YAMAGUCHI Hiroki
Принадлежит: DAIKIN INDUSTRIES, LTD.

A coating material capable of forming a film that is free of squeakiness and is less likely to suffer staining of clothing dye on the surface of a base such as a rubber molded article. The coating material contains fluororesin primary particles having an average particle size of 0.2 to 200 nm, a curable silicone resin in an amount of 0.1 to 250 mass % relative to the fluororesin primary particles, and water. 1. A coating material comprising:fluororesin primary particles having an average particle size of 0.2 to 200 nm;a curable silicone resin in an amount of 0.1 to 250 mass % relative to the fluororesin primary particles; andwater.2. The coating material according to claim 1 ,wherein the fluororesin primary particles are formed from at least one selected from the group consisting of polytetrafluoroethylene and melt-fabricable fluororesin other than polytetrafluoroethylene.3. The coating material according to claim 1 , which is an agent for imparting a tactile sensation claim 1 , an agent for imparting stain resistance claim 1 , an agent for imparting smoothness claim 1 , or an agent for imparting a refreshing sensation.4. The coating material according to claim 1 , which is a coating material for rubber claim 1 , a coating material for resin claim 1 , or a coating material for fiber.5. The coating material according to claim 1 , which is to be applied to a base formed from at least one selected from the group consisting of fluororubber claim 1 , acrylonitrile-butadiene rubber claim 1 , hydrogenated acrylonitrile-butadiene rubber claim 1 , styrene-butadiene rubber claim 1 , polychloroprene rubber claim 1 , polybutadiene rubber claim 1 , natural rubber claim 1 , polyisoprene rubber claim 1 , ethylene-propylene rubber claim 1 , ethylene-propylene-termonomer copolymerized rubber claim 1 , silicone rubber claim 1 , butyl rubber claim 1 , epichlorohydrin rubber claim 1 , urethane rubber claim 1 , acrylic rubber claim 1 , and chlorosulfonated polyethylene rubber.6. The ...

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Номер записи: 86
16-07-2020 дата публикации

PLASTICIZER IMPROVING DYNAMIC FATIGUE PERFORMANCE IN FIBER REINFORCED ELASTOMERS

Номер: US20200224655A1
Автор: Bohmer Robert
Принадлежит:

The dynamic fatigue and hysteresis performances of fiber reinforced rubber compounds are compared using different plasticizers. Fiber reinforced rubber compounds including a non-linear functionalized fatty acid ester, preferably a trimellitate, and more preferably Tris (2-Ethylhexyl) Trimellitate (TOTM) are shown to demonstrate greatly improved dynamic fatigue and hysteretic performance as compared to reference fiber reinforced rubber compounds including conventional reference plasticizers such as Di-isodecyl phthalate (DIDP). 1. A stator for use in a positive displacement motor or a progressing cavity pump , the stator comprising:a stator tube having interior helical pathways therein, the helical pathways extending in a longitudinal direction along the stator tube, the stator tube further including a first rubber compound;the first rubber compound including fiber reinforcement;the first rubber compound further including a first plasticizer, the first plasticizer selected from the group consisting of non-linear functionalized fatty acid esters.2. The stator of claim 1 , in which claim 1 , for strains on the first rubber compound in a range between about 0.4 degrees and 1.4 degrees claim 1 , the first rubber compound has a tan delta at least 10% lower than a reference tan delta claim 1 ,wherein the reference tan delta is for corresponding strains on a reference rubber compound between about 0.4 degrees and 1.4 degrees, wherein the reference rubber compound is the first rubber compound modified to include, in place of the first plasticizer, a reference plasticizer selected from the group consisting of Di-isodecyl phthalate (DIDP), linear fatty acid esters, adipates, sebacates, maleates and phthalates.3. The stator of claim 1 , in which claim 1 , for strains on the first rubber compound in a range between about 0.4 degrees and 1.4 degrees claim 1 , the first rubber compound has a lower tan delta than a reference tan delta claim 1 ,wherein the reference tan delta is for ...

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Номер записи: 87
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: 88
24-08-2017 дата публикации

PROCESS FOR PREPARING VULCANIZED RUBBER COMPOSITION, VULCANIZED RUBBER COMPOSITION AND STUDLESS TIRE USING SAME

Номер: US20170240732A1
Автор: KOJIMA Ryoji, TAKENAKA Mikako
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

According to the process for preparing a vulcanized rubber composition of the invention comprising (a) a step of preparing a master batch comprising a modified conjugated diene polymer and silica, (b) a step of preparing a master batch comprising an isoprene rubber and silica, (c) a step of kneading the master batch obtained in (a) and the master batch obtained in (b), and (d) a step of vulcanizing a kneaded product obtained in (c), wherein the obtained vulcanized rubber composition comprises a phase A comprising a modified conjugated diene polymer and a phase B comprising an isoprene rubber, which are incompatible with each other, an abundance ratio α of silica in the phase A satisfies 0.5≦α≦0.9 (Relation 1), and a proportion β of the modified conjugated diene polymer satisfies 0.4≦β≦0.8 (Relation 2) it is possible to improve performance on ice and abrasion resistance and to provide a vulcanized rubber composition having excellent performance on ice and abrasion resistance, and a studless tire with a tread made using the same. 1. A process for preparing a vulcanized rubber composition comprising:(a) a step of preparing a master batch comprising a modified conjugated diene polymer and silica,(b) a step of preparing a master batch comprising an isoprene rubber and silica,(c) a step of kneading the master batch obtained in the step (a) and the master batch obtained in the step (b), and(d) a step of vulcanizing a kneaded product obtained in the step (c),wherein the vulcanized rubber composition comprises:a phase comprising the modified conjugated diene polymer and silica (phase A), and a phase comprising the isoprene rubber and silica (phase B),wherein the phase A and the phase B are incompatible with each other,an abundance ratio α of silica in the phase A 100 to 500 hours after completion of a vulcanization step satisfies the following Relation 1, and [{'br': None, '0.5≦α≦0.9\u2003\u2003(Relation 1)'}, {'br': None, '0.4≦β≦0.8\u2003\u2003(Relation 2)'}], 'a proportion ...

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Номер записи: 89
10-09-2015 дата публикации

FLUORORUBBER MOLDED PRODUCT AND METHOD FOR MANUFACTURING THE SAME

Номер: US20150252151A1
Автор: FUJIMOTO Kentaro
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

A fluororubber molded product according to the present invention is obtained by the steps of molding and crosslinking a fluororubber composition and thereafter immersing the composition in a fluorocarbon or an aqueous solution containing a fluorocarbon at a concentration of not less than 10% by volume. 1. A fluororubber molded product obtained by the steps of molding and crosslinking a fluororubber composition and thereafter immersing the composition in a fluorocarbon or an aqueous solution containing a fluorocarbon at a concentration of not less than 10% by volume.2. The fluororubber molded product according to claim 1 , wherein the fluorocarbon includes a hydrochlorofluorocarbon.3. The fluororubber molded product according to claim 2 , wherein the hydrochlorofluorocarbon includes a mixture of the two types of fluorocarbon of 1 claim 2 ,1 claim 2 ,1 claim 2 ,2 claim 2 ,2-pentafluoro-3 claim 2 ,3-dichloropropane and 1 claim 2 ,3-dichloro-1 claim 2 ,1 claim 2 ,2 claim 2 ,2 claim 2 ,3-pentafluoropropane.4. The fluororubber molded product according to claim 1 , wherein the fluororubber includes vinylidene fluoride based fluororubber.5. A method for manufacturing fluororubber molded product comprising: a step of molding and crosslinking a fluororubber composition; anda step of immersing the composition in a fluorocarbon or an aqueous solution containing a fluorocarbon at a concentration of not less than 10% by volume after the crosslinking.6. The method for manufacturing fluororubber molded product according to claim 5 , wherein the conditions of immersion in the fluorocarbon or aqueous solution thereof are 5 to 30° C. and 5 to 20 minutes. The present application corresponds to Japanese Patent Application No. 2014-041953 filed on Mar. 4, 2014 in the Japan Patent Office, and the entire disclosure of this application is incorporated herein by reference.The present invention relates to a fluororubber molded product and a method for manufacturing the same.Fluororubber ...

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Номер записи: 90
01-09-2016 дата публикации

AQUEOUS ADHESIVE COMPOSITION WITH A BASE OF BIOSOURCED ALDEHYDE AND POLYPHENOL

Номер: US20160251550A1
Автор: Doisneau David, MICHOUD CLÉMENT
Принадлежит:

The aqueous adhesive composition comprises an unsaturated elastomer latex and a phenol/aldehyde resin based on an aldehyde of formula (I): 113.-. (canceled)16. The composition according to claim 14 , wherein the aldehyde is 2 claim 14 ,5-furandicarboxaldehyde.17. The composition according to claim 14 , wherein the polyphenol is selected from the group consisting of phloroglucinol claim 14 , 2 claim 14 ,2′ claim 14 ,4 claim 14 ,4′-tetrahydroxydiphenyl sulphide and mixtures thereof.18. The composition according to claim 14 , wherein the unsaturated elastomer latex comprises a diene elastomer.19. The composition according to claim 18 , wherein the diene elastomer is selected from the group consisting of polybutadienes claim 18 , butadiene copolymers claim 18 , polyisoprenes claim 18 , isoprene copolymers claim 18 , vinylpyridine/styrene/butadiene terpolymers and mixtures thereof.20. The composition according to claim 14 , wherein a ratio by weight of polyphenol to aldehyde is within a range of values extending from 0.1 to 30.21. A textile material comprising at least a portion coated with an adhesive layer comprising an adhesive composition according to .22. The textile material according to claim 21 ,wherein the textile material comprises a material selected from the group consisting of thermoplastic polymers claim 21 , non-thermoplastic polymers and assemblies of thermoplastic polymers and non-thermoplastic polymers.23. A process for the manufacture of a textile material comprising the step of:{'claim-ref': {'@idref': 'CLM-00014', 'claim 14'}, 'depositing an adhesive composition according to .'}24. A process for adhesively bonding a textile material to an unsaturated rubber comprising the step of:{'claim-ref': {'@idref': 'CLM-00014', 'claim 14'}, 'bonding the textile material and the unsaturated rubber with an adhesive composition according to .'}25. A rubber composite reinforced with a textile material according to .26. A tire comprising a rubber composite according ...

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Номер записи: 91
31-08-2017 дата публикации

Modified polymers and stable emulsions comprising the same

Номер: US20170247517A1
Автор: Fabien Salort, Jean-Marc Monsallier
Принадлежит: Fina Technology Inc

A modified polymer includes a diene-based polymeric chain and at least one end terminated with a blocked isocyanate group. The blocked isocyanate group may be the reaction product of an isocyanate and a blocking agent, and the blocking agent is selected, such that the modified polymer deblocks at temperatures of at least 100 C. An aqueous emulsion of the modified polymer may be provided that may be surfactant-free. The emulsion may be combined with one or more latexes to provide a treatment solution for a fabric or fiber that does not require the use of resorcinol and formaldehyde. Once treated and dried, the fabric or fiber may be used to impart tensile strength to rubber products, such as tires, air springs, flexible couplings, power transmission belts, conveyor belts, and fluid routing hoses.

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Номер записи: 92
17-09-2015 дата публикации

Prepreg, metal-clad laminate and printed circuit board

Номер: US20150259489A1
Автор: Hiroaki Umehara, Hiroharu Inoue
Принадлежит: Panasonic Intellectual Property Management Co Ltd

Provided is a prepreg that is formed by impregnating a fabric base material with a resin composition, then heating and drying. The resin composition includes (A) a polymer which has a specific structure, has no unsaturated bond between carbon atoms, has an epoxy number of from 0.2 to 0.8 eq/kg, and has a weight-average molecular weight of from 200,000 to 1,000,000; (B) a polyarylene-ether copolymer (PAE); and (C) an epoxy resin having two or more epoxy groups on a molecule. The component (B) is compatible with the component (A), and the component (C) is an epoxy resin that is incompatible with the component (A).

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Номер записи: 93
23-09-2021 дата публикации

MERCAPTANE-MODIFIED POLYCHLOROPRENE LATEX AND PRODUCTION METHOD THEREFOR

Номер: US20210292525A1
Автор: Hagiwara Shogo, KIYOFUJI Gaito, ONOZUKA Masao
Принадлежит: Denka Company Limited

To provide a polychloroprene latex from which a dip-formed film that is excellent in mechanical properties while having flexibility can be obtained. The polychloroprene latex is a mercaptan-modified polychloroprene latex comprising polychloroprene that is a copolymer of chloroprene and 2,3-dichloro-1,3-butadiene, wherein in a solid state 13C NMR spectrum of the polychloroprene obtained by freeze-drying the mercaptan-modified polychloroprene latex, an area (A) of a peak at 126.2 to 127.6 ppm, an area (B) of a peak at 122.0 to 126.2 ppm and an area (C) of a peak at 129.9 to 130.3 ppm are in the ranges represented by the following expression (I), an amount of the 2,3-dichloro-1,3-butadiene copolymerized is 4 to 35% by mass per 100% by mass in total of the chloroprene and the 2,3-dichloro-1,3-butadiene contained in the polychloroprene, and a toluene-insoluble content of the polychloroprene is 50 to 100% by mass in 100% by mass of the polychloroprene. 2. The mercaptan-modified polychloroprene latex according to claim 1 , having a peak of abietic acid in a component obtained by cutting the polychloroprene obtained by freeze-drying the mercaptan-modified polychloroprene latex claim 1 , placing the polychloroprene in an eggplant type flask equipped with a condenser and extracting the component with an ethanol/toluene azeotropic mixture defined by JIS K 6229 claim 1 , the component being measured utilizing a gas chromatograph.3. The mercaptan-modified polychloroprene latex according to claim 1 , wherein a content of an anionic surfactant excluding a rosin acid claim 1 , as determined from a peak area of the anionic surfactant claim 1 , is 0.2 to 1.0% by mass per 100% by mass of the polychloroprene claim 1 , the peak area being determined by cutting the polychloroprene obtained by freeze-drying the mercaptan-modified polychloroprene latex claim 1 , placing the polychloroprene in an eggplant type flask equipped with a condenser claim 1 , extracting the anionic surfactant with ...

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Номер записи: 94
24-09-2015 дата публикации

EXTRUDABLE PRESSURE SENSITIVE ADHESIVE COMPOSITION AND METHODS FOR PREPARING THE SAME

Номер: US20150267086A1
Автор: Fieldhouse John, Tang Jiansheng
Принадлежит:

A phase-separated polymeric composition comprising a first phase including polyurethane domains; and a second phase including a butyl rubber matrix. 1. A method for producing a polymeric composition , the method comprising:i. charging halogenated butyl rubber to a reaction extruder;ii. charging a first phenolic resin to the reaction extruder, where the first phenolic resin includes functionality for reacting with double bonds located on the butyl rubber;iii. charging a second phenolic resin that is substantially devoid of functionality for reacting with double bonds located on the butyl rubber;iv. charging a metal oxide to the reaction extruder;v. charging a catalyst to promote a reaction between the butyl rubber and the first phenolic resin to the reaction extruder;vi. mixing said halogenated butyl rubber, said first phenolic resin, said metal oxide, and said catalyst to promote the reaction between the butyl rubber and the first phenolic resin to thereby partially crosslinking the rubber and functionalizing the rubber with the first phenolic resin;vii. charging a isocyanate to the reaction extruder; andviii. mixing said partially crosslinked rubber, said phenolic resin, and said catalyst to thereby form a polyurethane dispersed within butyl rubber.2. The method of claim 1 , where said polyurethane is phase-separated from said butyl rubber.3. The method of claim 1 , where said polyurethane is cocontinuous with said butyl rubber at temperatures above 120° C.4. The method of claim 1 , where the isocyanate is a diisocyanate claim 1 , and where said polyurethane is the reaction product of said first phenolic resin and said diisocyanate.5. A method for producing a polymer composition claim 1 , the method comprising:i. providing a masterbatch composition that is prepared by combining a halogenated butyl rubber with a phenolic resin;ii. introducing the masterbatch composition to a reactor;iii. introducing to the reactor an isocyanate and a catalyst for forming a ...

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Номер записи: 95
14-09-2017 дата публикации

PRESSURE SENSITIVE ADHESIVE FOAM

Номер: US20170260350A1
Автор: Bieber Pierre Reinhard, Goeb Siegfried R., Stegmaier Petra M.
Принадлежит:

The present disclosure relates to a pressure sensitive adhesive foam comprising a rubber-based elastomeric material and at least one hydrocarbon tackifier, wherein the hydrocarbon tackifier(s) have a Volatile Organic Compound (VOC) value of less than 1000 ppm and a Volatile Fogging Compound (FOG) value of less than 1500 ppm, when measured by thermogravimetric analysis according to the weight loss test methods described in the experimental section. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive foam and uses thereof. 112-. (canceled)13. A multilayer pressure sensitive adhesive assembly comprising:(1) a first skin layer comprising a polyarcrylate pressure sensitive adhesive; (a) a rubber-based elastomeric material;', '(b) at least one hydrocarbon tackifier having a Volatile Organic Compound (VOC) value less than 100 ppm and a Volatile Fogging Compound (FOG) value less than 1000 ppm when measured by thermogravimetric analysis according to the weight loss test methods described in the experimental section; and', '(c) at least one plasticizer comprising polyisobutylene having a Volatile Organic Compound (VOC) value less than 100 ppm and a Volatile Fogging Compound (FOG) value less than 1000 ppm, wherein the polyisobutylene has a molecular weight in a range of 36,000 to 75,000 grams/mole when measured by thermogravimetric analysis according to the weight loss test methods described in the experimental section; and, '(2) a core layer comprising a pressure sensitive adhesive foam comprising'}(3) a second skin layer comprising a polyacrylate pressure sensitive adhesive.14. The multilayer pressure sensitive adhesive assembly of claim 13 , further comprising a primer layer positioned between the first skin layer and the core layer claim 13 , between the second skin layer and the core layer claim 13 , or both.15. The multilayer pressure sensitive adhesive assembly of claim 14 , wherein the primer layer is crosslinked.16. The ...

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Номер записи: 96
13-09-2018 дата публикации

FLEXIBLE FOAM WITH IMPROVED INSULATION PROPERTIES

Номер: US20180258245A1
Автор: BETTERMANN Miroslav, Zauner Christoph
Принадлежит: Armacell Enterprise GmbH & Co. KG

An expanded polymeric material which consists of at least 200 phr, preferably at least 300 phr, but less than 1000 phr, preferably less than 700 phr ingredients in total, comprising 100 phr of at least one polymer, of which at least one is a sulphur and/or metal oxide crosslinkable elastomer and at least 40 phr, preferably at least 55 phr of at least one polymeric flame retardant, preferably a brominated polymeric flame retardant. 1. An expanded polymeric material which consists of at least 200 phr , preferably at least 300 phr , but less than 1000 phr , preferably less than 700 phr ingredients in total , comprisinga. 100 phr of at least one polymer, of which at least one is a sulphur and/or metal oxide crosslinkable elastomer andb. at least 40 phr, preferably at least 55 phr of at least one polymeric flame retardant, preferably a brominated polymeric flame retardant.2. The material according to claim 1 , wherein the elastomer comprises at least 50 phr of acrylonitrile butadiene rubber (NBR) and/or polychloroprene (CR) and or ethylene propylene diene rubber (EPDM).3. The material according to claim 1 , wherein the 100 phr of polymer comprise at least 80 phr of a blend of at least one thermoplastic claim 1 , preferably a halogenated thermoplastic and at least one sulphur and/or metal oxide crosslinkable elastomer in a ratio of 3:1 to 1:10 (ratio of thermoplastic to elastomer).4. The material according to claim 3 , wherein the 80 phr of a blend consist ofa. acrylonitrile butadiene rubber (NBR) and polyvinyl chloride (PVC, including its copolymers and terpolymers) orb. acrylonitrile butadiene rubber (NBR) and chlorinated polyethylene (CPE) orc. polychloroprene (CR) and chlorinated polyethylene (CPE) ord. ethylene propylene diene rubber (EPDM) and chlorinated polyethylene (CPE).5. The material according to claim 1 , wherein the thermal conductivity (λ value) is ≤0.031 W/m*K @ 0° C. claim 1 , preferably ≤0.030 W/m*K at 0° C. according to DIN EN ISO 8497/DIN EN 12667.6. ...

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Номер записи: 97
13-08-2020 дата публикации

System and method for flexible sealant with density modifier

Номер: US20200255616A1
Автор: Devin KOCUREK, Jonathan PERRIELLO, Sandra KOCUREK
Принадлежит: Polymer Adhesive Sealant Systems Inc

The disclosed latex system comprises a one-component, closed-cell, semi-foam, mastic sealant using gas-filled, flexible, organic microspheres to create a product that is elastic and compressible under pressure without protruding in an outward direction when compressed, thereby allowing the applied sealant to compress in an enclosed, maximum-filled channel unlike typical mastic sealants (while retaining the ability to rebound). This allows the sealant to function as a gasket, and, once fully cured, to have properties including vibration damping, insulating, and condensation resistance. The sealant can be formulated as an air barrier or a vapor barrier and at various degrees of moisture resistance. It may be applied by different packaging variations including aerosol can (bag in can or bag on valve), airless sprayer, cartridge tubes, foil tubes, squeeze tubes, and buckets to be applied using a brush, trowel, spatula, etc. The disclosed mastic sealant can also be formulated to be smoke-resistant and flame-resistant.

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Номер записи: 98
13-08-2020 дата публикации

INTER-PENETRATING ELASTOMER NETWORK DERIVED FROM GROUND TIRE RUBBER PARTICLES

Номер: US20200255666A1
Автор: Coe William B.
Принадлежит:

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications. 1. (canceled)2. (canceled)3. (canceled)4. A polymeric matrix comprising a crosslinked network of end-of-life tire-derived rubber and at least one complementary polymer , wherein the polymeric matrix encapsulates carbon black and/or graphene particles.5. The polymeric matrix of claim 4 , wherein the complementary polymer comprises virgin natural rubber and/or styrene butadiene/butadiene rubber.6. The polymeric matrix of claim 4 , wherein the end-of-life tire-derived rubber and the complementary polymer have different backbone chemistries.7. The polymeric matrix of claim 4 , having an effective particle size of less than 5 microns.8. The polymeric matrix of claim 4 , wherein the at least one complementary polymer comprises a hydroxyl-containing polymer.9. The polymeric matrix of claim 4 , wherein the at least one complementary polymer comprises a vegetable oil.10. The polymeric matrix of claim 4 , wherein the at least one complementary polymer comprises a soybean oil claim 4 , a castor oil claim 4 , a linseed oil claim 4 , a sunflower oil claim 4 , or a hydrogenated soy oil.11. The polymeric matrix of claim 4 , in a form of a sheet.12. The polymeric matrix of claim 11 , exhibiting an anisotropy in length tensile strength to width tensile strength claim 11 , wherein the anisotropy in length tensile strength to width tensile strength is at least 1.1:1.13. The polymeric matrix of claim 4 , in a form of laminated sheets claim 4 , wherein each of the sheets has a thickness of from 10 to 70 microns claim 4 , and wherein each of ...

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Номер записи: 99
08-10-2015 дата публикации

Process for recovering wastes of a polymeric composition including a peroxidic crosslinking agent

Номер: US20150284528A1
Автор: Franco Galletti, Vito SCRIMA
Принадлежит: Prysmian SpA

A process for recovering wastes of a polymeric composition including at least one peroxide-curable polymer and at least one peroxidic crosslinking agent, which includes compounding the wastes with at least one antioxidant agent suitable for sulfur-vulcanized elastomeric compositions, at a temperature lower than the decomposition temperature of the at least one peroxide crosslinking agent. These antioxidant agents are effective to quench the peroxide crosslinking agent, so as to avoid any substantial crosslinking of the composition during processing of the same. The compounding of the polymeric wastes with the antioxidant agent is carried out at a temperature lower than the decomposition temperature of the peroxide crosslinking agent, so as to avoid any premature activation of the crosslinking agent. The process is particularly suitable for compositions based on elastomeric polyolefins, more preferably for elastomeric ethylene copolymers such as ethylene-propylene copolymers (EPR) and ethylene-propylene-diene terpolymers (EPDM), which can be processed at relatively low temperatures, much lower than the decomposition temperatures of the most common peroxide crosslinking agents.

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Номер записи: 100