C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/1115, 400/20
C08F 297/04 (2006.01) B60C 1/00 (2006.01) C08L 21/00 (2006.01) C08L 53/02 (2006.01)
Patent
CA 1325687
Abstract of the Disclosure A rubber composition suitable for tire treads having well-balanced excellent steering stability in cornering, wet skid characteristic, ice skid characteristic and rolling characteristic, and an excellent processability, which comprises a rubber component containing a block copolymer consisting essentially of a block A and a block B, obtained by conducting polymerization of an aromatic vinyl compound and a conjugated diene compound in a hydrocarbon solvent in the presence of an organolithium initiator and modifying with a coupling agent, and satisfying the following conditions (A) to (E); (A) the block A having a content of an aromatic vinyl compound of 5 to 20 % by weight and a content of 1,2-bonds in the conjugated diene component of 25 to 55 % by weight, (B) the block B having a content of an aromatic vinyl compound of 35 to 60 % by weight and a content of 1,2-bonds in the conjugated diene component of 20 to 70 % by weight, (C) the content of the block A in the block copolymer being from 20 to 80 % by weight, (D) the average content of the aromatic vinyl compound in the block copolymer being from 20 to 40 % by weight and the average content of 1,2-bonds in the conjugated diene component of the block copolymer being from 20 to 60 % by weight, and (E) at least 40 % by weight of the polymer chains of the block copolymer being a branched polymer formed by modification with a trifunctional or tetrafunctional coupling agent.
552606
Imai Akio
Saito Yuichi
Takao Hiroyoshi
Tsuji Mitsuji
Yabuta Takuzoh
Imai Akio
Osler Hoskin & Harcourt Llp
Saito Yuichi
Sumitomo Chemical Company Limited
Sumitomo Rubber Industries Limited
LandOfFree
Rubber composition for tire treads does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rubber composition for tire treads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rubber composition for tire treads will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1328696