Patent ID: 8796161
Filing Date: 2014-08-05
Classification: C08G,C08K,C09D,D06M,D06N,Y10T

Abstract:
1. A process for coating a silicone composition (A), which is a precursor of an elastomer and is polyaddition-crosslinkable, onto a textile medium, said process comprising the following steps a), b) and c): a) preparing a silicone composition (A) which is a precursor of an elastomer and is polyaddition-crosslinkable, comprising: with the condition that the polyorganosiloxane (B) comprises at least two radicals X per molecule; with the condition whereby the polyorganosiloxane (C) comprises just one radical X per molecule; 1) terminal siloxyl units of type M=(R 2) siloxyl units, which are identical or different, of type D=(R with the condition that the chain extender hydrogenopolyorganosiloxane (D-1) comprises two SiH functional groups per molecule; 1) terminal siloxyl units of type M=(R 2) siloxyl units, which are identical or different, of type D=(R with the condition whereby that the crosslinking hydrogenopolyorganosiloxane (D-2) comprises at least three SiH functional groups per molecule; with the additional condition that the amounts of the polyorganosiloxanes (B), (C) and (D) are chosen so that the molar ratio r2 of the hydrogen atoms linked to the silicone of the crosslinking hydrogenopolyorganosiloxanes (D-2) for the alkenyl radicals linked to the silicon of the polyorganosiloxanes (B) and (C) is defined as follows: 0.10≦r b) next, said silicone composition (A) is deposited continuously or discontinuously on said textile medium; and c) crosslinking said silicone composition (A) by heating and/or by infrared radiation.