Patent ID: 6313217
Filing Date: 2001-11-06
Classification: C07F,C08G,C08K,C08L

Abstract:
A peroxidically crosslinkable composition comprising:(A) organopolysiloxanes comprising units of the formula ##EQU3##in whichR.sup.3 is identical or different and is an optionally substituted hydrocarbon radical, andr is 0, 1, 2 or 3 and has an average numerical value of from 1.9 to 2.1,(B) reinforcing filler, nonreinforcing fillers, or mixtures thereof,(C) an agent which promotes crosslinking, and(D) at least one organosilicon compound having 2 to 17 silicon atoms, comprising units of the formulaR.sub.a R.sup.1.sub.b (OR.sup.2).sub.c SiO.sub.4-(a+b+c)/2 (I),whereR is identical or different and is a hydrogen atom or an optionally substituted, SiC-bonded aliphatically saturated hydrocarbon radical of 1 to 18 carbon atoms, with the proviso that not more than one R radical per silicon atom is a hydrogen atom,R.sup.1 is identical or different and is SiC-bonded, aliphatically unsaturated hydrocarbon radical having 2 to 18 carbon atoms,R.sup.2 is identical or different and is a hydrogen atom or optionally substituted hydrocarbon radical having 1 to 18 carbon atoms, where the hydrocarbon radical is optionally interrupted by oxygen atoms,a is 0, 1, 2, or 3,b is 0, 1, 2 or 3,c is 0, 1, 2 or 3,where the sum of a, b and c is less than or equal to 3 and at least one radical R.sup.1 is present per molecule, wherein (D) is present in a tear propagation resistance or compression set improving amount.