AMINOSILOXANES OF HIGH PURITY

摘要

Disclosed herein is a composition comprising amino-functional polysiloxanes of high purity and their preparation. Also disclosed herein is an aminoalkyl-functional polysiloxane, a process for purifying this aminoalkyl-functional polysiloxane, a process for preparing the composition, a use of the composition, a polyorganosiloxane-polyorgano block copolymer, a process for the preparation of a polyorganosiloxane-polyorgano block copolymer and a shaped, formed and/or extruded shaped article.

主权项

1. A composition comprising
(A) at least one aminoalkyl-functional polysiloxane of general formula (I), wherein each R1 group is independently selected from the group consisting of a monovalent C1-C20 alkyl, arylalkyl, alkylaryl, and aryl group, each of them being linear or branched, each R2 group is independently selected from the group consisting of linear or branched divalent optionally substituted organic radicals with 3 to 7 carbon atoms which can be interrupted by —O—, —NH—, and n is an integer having a value of 0 to 2000, (B) at least one compound which differs from (A) and is obtained by the hydrosilylation of at least one olefinic amine and at least one hydridosiloxane in the presence of a platinum catalyst, and (C) optionally at least one compound which differs from (A) and (B) and does not contain any NH2-functionality, characterized in that the NH2-functionality of the sum of components (A), and (B) is in the range of 1.96 to <2.00.