Patent ID: 6846780
Filing Date: 2005-01-25
Classification: B29C,C08G,C08L,C10M,C10N

Abstract:
1. Siloxane-based lubricant composition, in the form of an oil-in-water emulsion, that does not release hydrogen, comprising: (a) an unreactive polydiorganosiloxane oil with lubricant properties, having a dynamic viscosity from about 5×10 (b) a reactive linear polydiorganosiloxane oil containing at least two OH groups per molecule, said polydiorganosiloxane having a dynamic viscosity at 25° C. of between 5×10 (c) a crosslinking agent that is soluble in the silicone phase, comprising at least two functions capable of reacting with the reactive polydiorganosiloxane oil (b); (d) a water-soluble crosslinking agent selected from the group consisting of hydroxylated silanes and/or polydiorganosiloxanes, said crosslinking agent bearing at least one hydroxyl group and at least one organic group containing an Fr function per molecule, Fr representing an optionally substituted amino, epoxy, optionally substituted methacroyl, optionally substituted acroyl, optionally substituted ureido, optionally substituted thiol or halo function; (e) a surfactant; (f) a condensation catalyst capable of catalyzing the r action of the oil (b) with the crosslinking agent (c) and/or (d); and (g) water, said composition comprising: per 100 parts by weight of the sum of the constituents (a) (b)+(c)+(d)+(f); the amounts of surfactants and of water being sufficient to obtain an oil-in-water emulsion; wherein the comoositior does not comprise a polyorganosiloxane resin that is soluble in the silicone phase and bearing, before emulsification, condensable hydroxyl substituents.