Patent ID: 6127502
Filing Date: 2000-10-03
Classification: C08G

Abstract:
A polyorganosiloxane comprising at least one organofunctional group described by the formula--Z.sub.b --R.sup.4 (Z--SiR.sup.2.sub.n X.sub.3-n).sub.a (I)whereeach R.sup.2 is independently selected from the group consisting of a hydrogen atom and monovalent hydrocarbon radicals comprising 1 to about 18 carbon atoms;each Z is independently selected from the group consisting of divalent hydrocarbon radicals comprising about 2 to 18 carbon atoms and a combination of divalent hydrocarbon radicals and siloxane segments described by formula ##STR10## where R.sup.2 is as defined above; each G is an independently selected divalent hydrocarbon radical comprising about 2 to 18 carbon atoms; and c is a whole number from 1 to about 6;R.sup.4 is independently selected from the group consisting of a silicon atom and a siloxane radical comprising at least two silicon atoms and each Z is bonded to a silicon atom of R.sup.4 with the remaining valences of the silicon atoms of R.sup.4 being bonded to a hydrogen atom, a monovalent hydrocarbon radical comprising 1 to about 18 carbon atoms, or forming siloxane bonds;each X is independently selected from the group consisting of halogen, alkoxy, acyloxy, and ketoximo;n is 0, 1, or 2;a is at least 2; andb is 0 or 1, provided, when b is 0, R.sup.4 is bonded to the polyorganosiloxane through a siloxane bond.