Patent ID: 6472481
Filing Date: 2002-10-29
Classification: C08G,C08L

Abstract:
A sulfur-functional polyorganosiloxane corresponding to the general formula I wherein R1, R2, R3, R4, independently of one another, denote H,(C1-C4)alkyl, (C1-C4)alkoxy, (C1-C4)haloalkoxy, (C1-C4)haloalkyl, aryl or aralkyl andW denotes a group which bonds to the silica and Y denotes alkyl, haloalkyl, aryl or aralkyl and Z is optionally present and denotes an alkylidene group having 1-6 carbon atoms and A denotes a group which bonds with at least one elastomer of the rubber mixture: for q=1 a mercapto group(SH) and thiocyanate group (SCN) and for q=2 a disulfide (S2) and a polysulfide (Sx) with x=2-10 and H denotes hydrogen and the sum of k+m+n+p&gE;3 and k and n can equal 0.