Patent ID: 9441077
Filing Date: 2016-09-13
CPC Classification: A61K,A61Q,C08G

Claim Text:
1. A manufacturing method for obtaining an organopolysiloxane-polyoxyalkylene block copolymer, said method comprising reacting: (A) a polyoxyalkylene compound represented by formula (1) below: wherein: R R X D are each independently a group selected from group represented by the formula below: (wherein R Y are each independently a substituted or unsubstituted, straight or branched divalent organic group having from 1 to 20 carbons; c is a number not less than 2; d is a number not less than 0; and m are each independently a number not less than 0, n are each independently a number not less than 1, and m+n is a number in a range from 1 to 10,000; and (B) a polyorganosiloxane represented by the following formula (2): wherein: R′, X′, and R E is a hydrogen atom; and p is a number not less than 1, q is a number not less than 0, and p+q is a number in a range from 1 to 10,000; wherein the organopolysiloxane-polyoxyalkylene block copolymer includes a unit represented by the following formula (3): wherein R a is a number not less than 1, b is a number not less than 0, and a+b is a number in a range from 1 to 10,000; and e is a number not less than 1.