Patent ID: 6437015
Filing Date: 2002-08-20
Classification: C09D

Abstract:
Linear organopolysilxanes containing (meth)acryloxy groups, of the general formulaR1aR3-aSiO(R2SiO)c[R2Siâ€”Yâ€”SiR2O(R2SiO)c]dSiR3-bR1bâ€ƒâ€ƒ(I) in which R can be identical or different and is a monovalent, substituted or unsubstituted hydrocarbon radical having 1 to 18 carbon atoms per radical, which is free from terminal aliphatic carbonâ€”carbon multiple bonds,R1 is a radical of the formula where z is an integer whose value is from 1 to 10, R2 is a hydrogen atom or a methyl radical, R3 is a linear or branched alkylene radical having 1 to 6 carbon atom(s) per radical, and R4 is a linear or branched alkylene radical having 1 to 6 carbon atom(s) per radical, Y is a divalent organic radical which is free from terminal aliphatic carbonâ€”carbon multiple bonds, a is 0 or 1, b is 0 or 1, c is 0 or an integer whose value is from 1 to 1000, d is 0 or an integer whose value is from 1 to 10, and with the proviso that the sum a+b per molecule is on average from 1.3 to 1.9.