Organopolysiloxane and making method

摘要

Organopolysiloxanes containing a sulfide-containing organic group, a long-chain alkyl group, and a hydrolyzable group are novel. The organopolysiloxanes are effective for improving the shelf stability of epoxy resin compositions.

主权项

1. An organopolysiloxane containing at least a sulfide-containing organic group, a long-chain alkyl group, and a hydrolyzable group, represented by the average compositional formula (1):
(A)a(B)b(C)c(D)d(R1)eSiO(4−2a−b−c−d−e)/2  (1)wherein A is a sulfide-containing divalent organic group, B is an alkyl group of 5 to 10 carbon atoms, C is a hydrolyzable group and/or hydroxyl group, D is a mercapto-containing organic group, R1 is an alkyl group of 1 to 4 carbon atoms, or an aryl group of 6 to 10 carbon atoms, a, b, c, d and e are numbers in the range: 0<2a <1, 0