PRODUCTION METHOD FOR BRANCHED ORGANOPOLYSILOXANE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a branched organopolysiloxane and a branched organopolysiloxane emulsion polymer in a shortened polymerization time. SOLUTION: The method for producing a branched organopolysiloxane comprises polymerizing an organopolysiloxane mixture comprising a branched organopolysiloxane (A) represented by formula 1 (R1 is a 1-20C monovalent organic group; each R2 is independently a 1-20C monovalent organic group; R3 is hydroxyl, a 1-6C alkoxy, or a 1-20C monovalent organic group; 1<=m<=100; a is 0 or 1; b is 3 or 4 provided a+b=4) and a low-mol.wt. organopolysiloxane (B) in the presence of an acidic or basic catalyst.