Patent ID: 8314185

Claim:
Vulcanizable rubber mixture which comprises from 10 to 100 phr of at least one block copolymer functionalized at least at one chain end (terminally) for binding to fillers, at least one filler and, optionally, additives, wherein at least one block copolymer comprises, as a main chain, a statistically or microsequentially polymerized copolymer comprising a conjugated diene and an aromatic vinyl compound, and which has, polymerized onto at least one end of the main chain, a terminally functionalized block of different structure to the main chain, which structure is homopolymeric or copolymeric, from 5 to 250 monomer units long, and composed of at least one of the monomers of the main chain, with the provision that the glass transition temperatures on the one hand of the main chain and on the other hand of the terminal block are different, wherein identical or different functional groups as listed below are present at at least one chain end or at both chain ends of the block copolymer consisting of main chain polymer and terminal block, the degree of functionalization, based on the at least one block copolymer, being from 30% to 100%: —OH, —COOH, —COX, where X=halogen, —SH, —CSSH, —NCO, amino, epoxy, silyl, silanol or siloxane groups inclusive of, in each case attached to the polymer chain with or without a spacer, polysiloxane groups and siloxane and polysiloxane groups comprising amino groups.