公开(公告)号：JPS6462338A

公开(公告)日：1989-03-08

申请号：JP22113187

申请日：1987-09-02

Applicant: BRIDGESTONE CORP

Inventor： MAEDA SHU ,  KONDO HITOSHI

IPC: C08K5/34 ,  C08L7/00 ,  C08L21/00

Abstract: PURPOSE:To obtain the titled composition with significantly improved heat and crack propagation resistances, by incorporating matrix rubber with as the curing agent, a combination of sulfur and specific bismaleimide compound and, as the curing accelerator, sulfenamide accelerator and thiuram accelerator. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of natural rubber and/or synthetic rubber with (B) as the curing agent, B1: 0.2-6pts.wt. of sulfur and B2: 0.1-10pts.wt. of a bismaleimide compound of formula I (R is of formula II or straight chain hydrocarbon having at least one ether linkage and having or not having side chain; n is >=7) (pref. a compound with the R having at least one ether linkage) and (C) as the curing accelerator, C1: 0.1-5pts.wt. of a sulfenamide accelerator (e.g. N-cyclohexyl-2- benzothiazolyl sulfenamide) and C2: 0.1-5pts.wt. of a thiuram accelerator.

公开(公告)号：JPS63286445A

公开(公告)日：1988-11-24

申请号：JP12131287

申请日：1987-05-20

Applicant: BRIDGESTONE CORP

Inventor： KONDO HITOSHI ,  MAEDA SHU ,  MORITA KOICHI

IPC: C08K5/34 ,  C08L7/00 ,  C08L21/00

Abstract: PURPOSE:To obtain the titled composition significantly improved in grip performance and heat and crack propagation resistances, by incorporating natural and/or synthetic rubber(s) with sulfur as the curing agent and a specific bismaleimide compound. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of natural and/or synthetic rubber(s) with (B) 0.2-6pts.wt. of sulfur as the curing agent and (C) 0.1-10pts.wt. of a bismaleimide compound of formula I (R is of formula II or straight chain hydrocarbon which may have side chain containing at least one ether linkage; n is >=7) (e.g., N,N'-4,7- dioxadecane-1,10-bismaleimide) and furthermore, if needed, (D) filler such as carbon black, softening agent, curing agent, curing accelerator, deteriorationproof agent, etc.

公开(公告)号：JPH059338A

公开(公告)日：1993-01-19

申请号：JP19130691

申请日：1991-07-05

Applicant: BRIDGESTONE CORP

Inventor： MAEDA SHU ,  MATSUO KENJI

IPC: C08L9/06 ,  B60C1/00 ,  C08L21/00

Abstract: PURPOSE:To obtain the title composition improved in grip performance while maintaining abrasion resistance by blending a specific styrene-butadiene copolymer rubber with a petroleum resin in a specific amount. CONSTITUTION:The objective composition containing (A) 100 pts.wt. styrene- butadiene copolymer rubber having 25-60wt.% (preferably

公开(公告)号：JPH05214170A

公开(公告)日：1993-08-24

申请号：JP2014692

申请日：1992-02-05

Applicant: BRIDGESTONE CORP

Inventor： SAKIYAMA ATSUSHI ,  MAEDA SHU ,  MATSUO KENJI

IPC: B60C11/00 ,  B60C1/00 ,  C08L9/06 ,  C08L21/00 ,  C08L45/00 ,  C08L45/02 ,  C08L57/02

Abstract: PURPOSE:To provide a tread rubber composition having improved abrasion resistance and road-gripping performance. CONSTITUTION:The objective composition is produced by compounding (A) 100 pts.wt. of a styrene-butadiene copolymer rubber containing 25-60wt.% of styrene component with (B) 10-200 pts.wt. of a resin mixture consisting of a petroleum resin composed mainly of 9C aromatic resin and a coumarone-indene resin having a softening point of