Method for producing a poly dimethyl siloxane sill methylene

摘要

PROBLEM TO BE SOLVED: To provide a method of producing polydimethylsilmethylenesiloxane which allows easily adjustment of a polymerization degree and exhibits excellent productivity.;SOLUTION: In the method of producing polydimethylsilmethylenesiloxane represented by the specified general formula (3), a compound to become a main chain of polydimethylsilmethylenesiloxane and a compound (II) represented by the specified general formula (2) are reacted in the presence of an acidic catalyst. (In the formula, R are each independently a substituted or unsubstituted C1-C12 monovalent hydrocarbon group, m is an integer between 2 and 500, and Me is a methyl group.);COPYRIGHT: (C)2014,JPO&INPIT