公开(公告)号：US20240254319A1

公开(公告)日：2024-08-01

申请号：US18629913

申请日：2024-04-08

申请人： Sumitomo Riko Company Limited

发明人： Yuto Watanabe ,  Seiji Kasai ,  Akio MASE ,  Yuko MATSUSHITA

IPC分类号： C08K13/02 ,  C08K3/36 ,  C08K5/47 ,  C08K5/5419 ,  F16F1/36

CPC分类号： C08K13/02 ,  F16F1/3605 ,  C08K3/36 ,  C08K5/47 ,  C08K5/5419 ,  F16F2224/025

摘要： Provided are a vibration-damping rubber composition and a vibration-damping rubber member which have excellent durability, can attain a reduction in dynamic-to-static modulus ratio, and can exhibit excellent scorch resistance in wet-heat environments, etc. This vibration-damping rubber composition comprises a diene-based rubber composition including the following (A) to (C) and further containing the following (D) and (E), where the total amount of (D) and (E) is 1-5 parts by mass per 100 parts by mass of (A) and the mass ratio between (D) and (E) is (D):(E)=90:10 to 50:50: (A) a diene-based rubber; (B) silica; (C) a silane coupling agent; (D) N-oxydiethylene-2-benzothiazolylsulfenamide; and (E) Di-2-benzothiazolyl disulfide.

公开(公告)号：US20210206944A1

公开(公告)日：2021-07-08

申请号：US17192857

申请日：2021-03-04

申请人： Sumitomo Riko Company Limited

发明人： Masashi Okahisa ,  Seiji Kasai

IPC分类号： C08K5/25 ,  C08L7/00 ,  C08K5/548 ,  C08K5/5415 ,  C08K5/27 ,  C08K3/36 ,  C08K3/04 ,  F16F1/36

摘要： An anti-vibration rubber composition contains: a polymer comprising component (A); and components (B) to (E). The mixing ratio of the components (B) and (C) is in a range of (B)/(C)=99/1 to 96/4 in weight ratio. As a result, it becomes possible to achieve a low dynamic magnification and to achieve both durability and weather resistance at a high level. (A) diene rubber; (B) silica; (C) carbon black; (D) silane coupling agent; (E) dihydrazide compound represented by general formula (1). [in general formula (1), R represents an alkylene group having 1 to 30 carbon atoms, a cycloalkylene group having 1 to 30 carbon atoms, or a phenylene group]

公开(公告)号：US20240262985A1

公开(公告)日：2024-08-08

申请号：US18628842

申请日：2024-04-08

申请人： Sumitomo Riko Company Limited

发明人： Yuto Watanabe ,  Seiji Kasai ,  Toyohisa Tohyama

IPC分类号： C08K5/548 ,  C08K3/04 ,  C08K3/36 ,  C08K9/06 ,  F16F1/36

CPC分类号： C08K5/548 ,  C08K3/04 ,  C08K3/36 ,  C08K9/06 ,  F16F1/3605 ,  C08K2201/005 ,  C08K2201/006 ,  F16F2224/025

摘要： Provided are a vibration-damping rubber composition and a vibration-damping rubber member which have excellent durability, can attain a reduction in dynamic-to-static modulus ratio, and can exhibit excellent scorch resistance even in wet-heat environments, etc. This vibration-damping rubber composition comprises a diene-based rubber composition comprising the following (A) to (C). (A) A diene-based rubber. (B) Silica having a silanol group density of four groups per nm2 or greater, a BET specific surface area of 13-60 m2/g, and an average particle diameter of 3-10 μm. (C) A silane coupling agent having a sulfide group and a mercapto group in the molecule.

公开(公告)号：US20180312668A1

公开(公告)日：2018-11-01

申请号：US16031110

申请日：2018-07-10

申请人： Sumitomo Riko Company Limited

发明人： Seiji Kasai ,  Keiichi Muratani ,  Norihito Kimura

IPC分类号： C08L7/00 ,  F16F1/36

CPC分类号： C08L7/00 ,  B60G2204/41 ,  B60K5/1208 ,  F16F1/3605 ,  F16F15/08 ,  F16F2224/025 ,  C08L9/00 ,  C08L53/02 ,  C08L53/025

摘要： Provided is an anti-vibration rubber composition, including the following components (A) to (D), in which a ratio of the component (B) to a total content of the components (A) and (B) is from 5 wt. % to 20 wt. %: (A) A natural rubber, or a blended rubber of the natural rubber and a butadiene rubber; (B) A hydrogenated styrene-butadiene block copolymer; (C) A sulfur-based vulcanizing agent; (D) Zinc monomethacrylate. Thus, there can be provided an anti-vibration rubber composition and an anti-vibration rubber each of which is excellent in heat resistance, and has both a high damping property and a low dynamic-to-static modulus ratio.

公开(公告)号：US11965077B2

公开(公告)日：2024-04-23

申请号：US17192857

申请日：2021-03-04

申请人： Sumitomo Riko Company Limited

发明人： Masashi Okahisa ,  Seiji Kasai

IPC分类号： C08K5/25 ,  C08K3/04 ,  C08K3/36 ,  C08K5/27 ,  C08K5/5415 ,  C08K5/548 ,  C08L7/00 ,  C08L9/00 ,  F16F1/36 ,  F16F15/08

CPC分类号： C08K5/25 ,  C08K3/04 ,  C08K3/36 ,  C08K5/27 ,  C08K5/5415 ,  C08K5/548 ,  C08L7/00 ,  C08L9/00 ,  F16F1/3605 ,  F16F15/08 ,  F16F2224/025 ,  F16F2226/02 ,  C08K3/36 ,  C08L9/00 ,  C08K3/04 ,  C08L9/00 ,  C08K5/548 ,  C08L9/00 ,  C08K5/25 ,  C08L9/00

摘要： An anti-vibration rubber composition contains: a polymer comprising component (A); and components (B) to (E). The mixing ratio of the components (B) and (C) is in a range of (B)/(C)=99/1 to 96/4 in weight ratio. As a result, it becomes possible to achieve a low dynamic magnification and to achieve both durability and weather resistance at a high level.



(A) diene rubber;
(B) silica;
(C) carbon black;
(D) silane coupling agent;
(E) dihydrazide compound represented by general formula (1).










[in general formula (1), R represents an alkylene group having 1 to 30 carbon atoms, a cycloalkylene group having 1 to 30 carbon atoms, or a phenylene group].

公开(公告)号：US10752756B2

公开(公告)日：2020-08-25

申请号：US16031110

申请日：2018-07-10

申请人： Sumitomo Riko Company Limited

发明人： Seiji Kasai ,  Keiichi Muratani ,  Norihito Kimura

IPC分类号： C08L7/00 ,  F16F15/08 ,  F16F1/36 ,  B60K5/12

摘要： Provided is an anti-vibration rubber composition, including the following components (A) to (D), in which a ratio of the component (B) to a total content of the components (A) and (B) is from 5 wt. % to 20 wt. %: (A) A natural rubber, or a blended rubber of the natural rubber and a butadiene rubber; (B) A hydrogenated styrene-butadiene block copolymer; (C) A sulfur-based vulcanizing agent; (D) Zinc monomethacrylate. Thus, there can be provided an anti-vibration rubber composition and an anti-vibration rubber each of which is excellent in heat resistance, and has both a high damping property and a low dynamic-to-static modulus ratio.