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公开(公告)号：US12098232B2
公开(公告)日：2024-09-24
申请号：US17423989
申请日：2020-09-25
申请人： LG Chem, Ltd.
发明人： Suk Youn Kang , Ju Ryang Bae , Seo Won Choi , Tae Chul Lee
摘要： A neodymium-catalyzed modified conjugated diene-based polymer having excellent affinity with a filler is provided. A method for preparing the same and a rubber composition including the same are also provided. The neodymium-catalyzed modified conjugated diene-based polymer includes a repeating unit derived from a conjugated diene-based monomer; and a functional group derived from a modifier represented by Formula 1 in at least one terminal of a polymer.
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公开(公告)号：US20240301180A1
公开(公告)日：2024-09-12
申请号：US18667965
申请日：2024-05-17
发明人： Masahiro SHINDO , Yoshitaka MEKI
CPC分类号： C08L15/005 , C08K13/02 , F16G1/28 , C08K3/04 , C08K3/06 , C08K5/12 , C08K5/14 , C08K2201/011 , C08K2201/014 , C08L2205/06 , C08L2312/00
摘要： A toothed belt includes a belt body made of a rubber composition. The rubber composition contains a hydrogenated nitrile rubber having a bound acrylonitrile content of 15% by mass or more and 30% by mass or less, has a hardness of A70 or more and A80 or less at a test temperature of 25° C., and has a cold resistance index of 0.25 or less after being heat-aged by being exposed to an atmosphere at a temperature of 140° C. for 144 hours, the cold resistance index being defined by the following formula (I):
Cold
Resistance
Index
=
5
%
Modulus
at
Test
Temperature
of
-
40
°
C
.
/
Hardness
at
Test
Temperature
of
25
°
C
.
(
I
)-
公开(公告)号：US12078035B2
公开(公告)日：2024-09-03
申请号：US18247758
申请日：2021-10-11
发明人： Jinglei Xiang , Jason Holzmueller , Xiaohong Ren , Jushik Yun
CPC分类号： E21B43/082 , C08J9/0061 , C08J9/0066 , C08J9/08 , C08J9/103 , C08L15/005 , C08J2201/026 , C08J2203/02 , C08J2203/04 , C08J2203/18 , C08J2205/05 , C08J2315/00 , C08J2323/06 , C08L2201/08 , C08L2203/14 , C08L2205/06 , E21B2200/08
摘要： An elastomer alloy includes a base polymer including hydrogenated nitrile butadiene rubber (HNBR) and at least one secondary polymer, which is at least one of paraffin wax, low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE), and a plastomer. The base polymer and the at least one secondary polymer are blended into a polymer matrix. The elastomer alloy also includes a plurality of smart fillers dispersed within the polymer matrix, at least one chemical foaming agent, and a curing activator.
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公开(公告)号：US20240228757A1
公开(公告)日：2024-07-11
申请号：US18613564
申请日：2024-03-22
申请人： Zeon Chemicals L.P.
发明人： Soobum CHOI , Lawrence J. JUSTICE , Mahesh DATLA
CPC分类号： C08L15/005 , B01J23/44 , B01J38/74 , B01J47/02 , C08C19/02
摘要： The residual hydrogenation catalyst from the hydrogenated nitrile rubber solution is recovered by using two steps such as (1) the catalyst extraction step with an ammonium salt and water (optionally including an oxidation step) to extract catalyst from the HNBR polymer chain to the solvent and then (2) the separation/column recovery step with the column packed with functional ion exchange resins for the separation of ammonia-catalyst complex from hydrogenated nitrile rubber solution and the column recovery for the high catalyst recovery with functional groups of resins. The ammonium salt for the catalyst extraction step is selected from ammonium chloride, ammonium bromide, ammonium iodide, and ammonium acetate. The functional groups in the functional ion exchange resins for packing the column is selected from thiourea, thiouronium, thiol, amine, diamine, triamine, TMT, dithiocarbamate, and carbodithioate.
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公开(公告)号：US12024619B2
公开(公告)日：2024-07-02
申请号：US17255429
申请日：2019-06-21
申请人： KURARAY CO., LTD.
发明人： Yosuke Uehara , Kei Hirata
CPC分类号： C08L15/005 , C08K3/04 , C08K5/14 , C08L9/00 , C08L2312/02
摘要： The invention provides a peroxide crosslinkable rubber composition including a hydrogenated nitrile rubber that is enhanced in scorch stability without deterioration in superior characteristics of crosslinked products of the composition. The invention also provides a crosslinked product of such a rubber composition. The rubber composition includes 100 parts by mass of a hydrogenated nitrile rubber (A), 5 to 100 parts by mass of a filler (B), 1 to 10 parts by mass of an organic peroxide (C), and 1 to 20 parts by mass of a liquid diene rubber (D) having a polystyrene-equivalent weight average molecular weight of 3,000 to 120,000 as measured by gel permeation chromatography (GPC).
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公开(公告)号：US11987703B2
公开(公告)日：2024-05-21
申请号：US17261843
申请日：2019-07-23
发明人： Kensuke Washizu
摘要： The present invention aims to provide rubber compositions and tires which provide improved overall performance in terms of wet grip performance and dry grip performance. The present invention relates to a rubber composition having a hardness that reversibly changes with water and satisfying the following relationship (1):
Hardness when dry−Hardness when water-wet≥10 (1)
wherein each hardness represents the JIS-A hardness at 25° C. of the rubber composition.-
公开(公告)号：US20240101798A1
公开(公告)日：2024-03-28
申请号：US18464170
申请日：2023-09-08
申请人： William B. Coe
发明人： William B. Coe
IPC分类号： C08L19/00 , B32B25/00 , B60C1/00 , C08F210/12 , C08F236/14 , C08J3/24 , C08J5/18 , C08J11/00 , C08J11/26 , C08K5/56 , C08L9/06 , C08L11/00 , C08L15/00 , C08L15/02 , C08L17/00 , C08L23/22
CPC分类号： C08L19/003 , B32B25/00 , B60C1/0008 , B60C1/0016 , B60C1/0025 , C08F210/12 , C08F236/14 , C08J3/246 , C08J5/18 , C08J11/00 , C08J11/26 , C08K5/56 , C08L9/06 , C08L11/00 , C08L15/005 , C08L15/02 , C08L17/00 , C08L23/22 , C08J2309/00 , C08J2309/06 , C08J2317/00 , C08L7/00 , C08L2205/22
摘要： 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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公开(公告)号：US11865866B2
公开(公告)日：2024-01-09
申请号：US17299475
申请日：2019-12-02
发明人： Jean-Luc Cabioch , Michael Arnoux
CPC分类号： B60C11/0058 , B60C1/0016 , C08K3/04 , C08L9/06 , C08L15/00 , B60C2200/02 , C08C19/42 , C08L45/00
摘要： An aircraft tire comprises a tread (2), having an axial width L, which comprises a middle portion (3) having an axial width LC at least equal to 50% and at most equal to 80% of the axial width L of the tread and consisting of a middle rubber composition, and two lateral portions (41, 42), positioned axially on either side of the middle portion (3), each having an axial width (LS1, LS2) at least equal to 10% and at most equal to 25% of the axial width L of the tread and each consisting of a lateral rubber composition. The middle rubber composition comprises in particular from 25 to 85 phr of a tin-functionalized butadiene and styrene copolymer and from 15 to 75 phr of isoprene elastomer, and at least one lateral rubber composition is different from the middle rubber composition.
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公开(公告)号：US11739199B2
公开(公告)日：2023-08-29
申请号：US16759208
申请日：2019-02-11
申请人： LG Chem, Ltd.
发明人： Jung Eun Kim , Seung Uk Yeu , Sang Jin Shin , Won Sang Kwon
CPC分类号： C08L15/00 , C08J5/02 , C08K3/011 , C08K3/105 , C08C19/44 , C08J2315/00 , C08L2312/00
摘要： Provided are a carboxylic acid-modified nitrile-based copolymer latex composition, a preparation method thereof, a latex composition for dip-molding including the same, and an article molded by the same, the carboxylic acid-modified nitrile-based copolymer latex composition including: a carboxylic acid-modified nitrile-based copolymer, wherein the carboxylic acid-modified nitrile-based copolymer includes a 2-hydroxyethyl methacrylate monomer-derived repeating unit in an amount of more than 0.1 wt % to less than 12 wt %, and a coagulum in the carboxylic acid-modified nitrile-based copolymer latex composition has an amount of less than 1 wt %.
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10.发明授权公开(公告)号：US11732117B2
公开(公告)日：2023-08-22
申请号：US16753221
申请日：2018-10-03
CPC分类号： C08L15/00 , B60C1/0016 , B60C11/0008 , B60C2011/0025 , C08L2312/08
摘要： A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being a blocked mercaptosilane of formula (I), as described in the claims; a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.
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