AQUEOUS DISPERSIONS OF GRAFT FUNCTIONALIZED POLYORGANOSILOXANES, PROCESS FOR THEIR PREPARATION AND THEIR USE IN PREPARING HARDENING SILICONE COMPOSITIONS

摘要

stable aqueous dispersions of reactivepolyorganosiloxanes graft consisting of functionalizedreasons for graft copolymers derived from at least one monomeru00e9thylu00e9niquement capable of curing by unsaturatedand a polyorganosiloxane functionalized radicalwith similar or different patterns of formula(i) r a b x c sio (4 - (b - c) / 2. in the formula, symbolsr represents an alkyl group, alkenyl, aryl, oraralkyle; symbols represent a hydrogen atom, xor a reactive function linked to a silicon atom by ansi-c bond or - o -; the symobles have a restu00e9thylu00e9niquement unsaturated hydrocarbon with an atom ofsilicon of formula (i) by reason of the si-c bond.capable of reacting with the free radical or bythe unsaturated monomer (s) u00e9thylu00e9niquement (s); and, (b) and (c)is equal to 0, 1, 2, or 3; and a + b + c = 0, 1, 2, or 3; the rate ofreasons sio4 / 2 was less than 30% by mol; the number ofthe reasons of formula (i) in which the silicon atoma function x and / or stay as thepolyorganosiloxanes contain at least 5 meq.preferably the 500 milliequivalents of functions xto 100 grams of polyorganosiloxane of formula (i), andless than 5 meq, preferably from 10 to 500meq, stay there for 100 grams ofpolyorganosiloxane of formula (i). these aqueous dispersionsin polyorganosiloxanes grafted functionalized arecan be used for the realization of the silicone compositionscurable under the action of heat, radiation,electron beams and / or a catalyst.