Patent ID: 7972705

Claim:
A process for producing coatings that are waterproof and permeable to moisture vapor, on textile supports, comprising: applying to at least one of the faces of the support, so as to form a film, a silicone-based water-in-oil inverse emulsion comprising: (A) a continuous oily silicone phase φs, which can be crosslinked into an elastomer and which comprises: at least one polyorganosiloxane (POS) that is crosslinkable by polyaddition, by polycondensation, by cationic means or by free-radical means; the at least one POS having crosslinking functional groups, wherein the crosslinking functional groups are groups having at least one ethylenically unsaturated function and/or epoxide and/or oxethane; optionally at least one silane and/or one POS carrying functional groups which may or may not have the crosslinking functional groups of POS; at least one photoinitiator system selected from the onium salts of an element of groups 15 to 17 of the Periodic Table or of an organometallic complex of an element of groups 4 to 10 of the Periodic Table, optionally at least one catalyst for the crosslinking reaction; (B) an aqueous phase φa comprising at least 20% by weight of water, (C) at least one stabilizer, wherein the ratio of the amount of water to the amount of water plus silicone is at least 20% by weight, and crosslinking the silicone phase φs and removing the water.