Patent ID: 11884767
Assignee: BRIDGESTONE CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A vulcanizable composition comprising:
(i) a rubber component,
(ii) a filler, and
(iii) a curing agent,, where the rubber component includes a block copolymer including a polybutadiene block and a polyisoprene block, where the number average molecular weight of the polybutadiene block is from about 200 g/mol to about 800,000 g/mol, where the number average molecular weight of the polyisoprene block is from about 200 g/mol to about 800,000 g/mol, where the block copolymer has a cis content of at least 90%, and where the block copolymer is at least 50% by weight of the rubber component.