Patent ID: 6034225
Filing Date: 2000-03-07
Classification: C08G,C08L,C09D,D21H

Abstract:
An organopolysiloxane containing aliphatically unsaturated radicals, which is soluble in organic solvents selected from the group consisting of xylenes and toluene to an extent of at least 80 percent by weight, at a temperature of 25.degree. C. and a pressure of from 900 to 1100 hPa, and comprises at least one unit of the formulaR.sup.1.sub.a R.sub.2-a SiO.sub.2/2 (I),at least one unit of the formulaR.sup.1.sub.b R.sub.3-b SiO.sub.1/2 (II),at least one unit of the formulaO.sub.1/2 R.sub.2 SiO.sub.x YRSiO.sub.2/2 (III)and, optionally, at least one unit of the formulaO.sub.1/2 R.sub.2 SiO.sub.x YR.sub.2 SiO.sub.1/2 (IV),whereR can be identical or different and is a monovalent, substituted or unsubstituted, SiC-bonded, aliphatically saturated hydrocarbon radical,R.sup.1 can be identical or different and is a monovalent, SiC-bonded, substituted or unsubstituted, aliphatically unsaturated hydrocarbon radical,a is 0, 1 or 2,b is 0, 1, 2 or 3,x is 0 or 1 andY is a radical --(CR.sup.3.sub.2).sub.n CHR.sup.3 -- with at least two carbon atoms, where n is 0 or an integer from 1 to 3 and R.sup.3 is a hydrogen atom or is as defined for R,with the proviso that the organopolysiloxane includes at least one unit of the formula (II) where b is not 0.