公开(公告)号：US10125245B2

公开(公告)日：2018-11-13

申请号：US15519695

申请日：2015-10-16

申请人： ZEON CORPORATION

发明人： Naoaki Kuramoto ,  Takeshi Sugimura ,  Shingo Okuno ,  Hiroyuki Nitadori

IPC分类号： C08L9/06 ,  B60C1/00 ,  C08K3/36 ,  C08K5/54 ,  C08L15/00 ,  C08C19/25 ,  C08C19/44 ,  C08G61/08 ,  C08L65/00

摘要： Provided is a rubber composition for a tire containing a rubber component including 15 to 55 wt % of an end modified group-containing cycloolefin ring-opening polymer having a glass transition temperature of −120 to −90° C. and 45 to 85 wt % of an end modified group-containing solution polymerized conjugated diene polymer having a glass transition temperature of −60 to −10° C. and having an aromatic vinyl monomer unit content ratio of more than 30 wt % and 50 wt % or less, a silica, and a silane coupling agent including a monosulfide group and/or a thiol group, wherein the content of the silica with respect to 100 parts by weight of the rubber component is 30 to 200 parts by weight, and the content of the silane coupling agent including a monosulfide group and/or a thiol group with respect to 100 parts by weight of the silica is 0.3 to 20 parts by weight.

公开(公告)号：US10072101B2

公开(公告)日：2018-09-11

申请号：US15505985

申请日：2015-08-26

申请人： ZEON CORPORATION

发明人： Yasuo Tsunogae ,  Shingo Okuno ,  Naoaki Kuramoto

IPC分类号： C08C1/15 ,  C08F132/04 ,  C08F8/00 ,  C08G61/08 ,  C08K3/04 ,  C08K3/36 ,  C08F6/22 ,  C08K5/103

CPC分类号： C08C1/15 ,  B60C1/00 ,  C08F6/22 ,  C08F8/00 ,  C08F132/04 ,  C08G61/08 ,  C08G2261/135 ,  C08G2261/1644 ,  C08G2261/3321 ,  C08G2261/418 ,  C08G2261/726 ,  C08G2261/76 ,  C08K3/04 ,  C08K3/36 ,  C08K5/103 ,  C08L65/00 ,  C08L71/02

摘要： A cycloolefin rubber having a weight average molecular weight of 100,000 to 800,000, having a silyl group at the polymer chain end, and containing a fatty acid ester of a polyvalent alcohol. A cycloolefin rubber excellent in processability at the time of blending and kneading and excellent in low heat buildup property can be provided.