Patent ID: 6833043
Filing Date: 2004-12-21
Classification: B32B,C08J,C08L,Y10T

Abstract:
A method of bonding a fluoropolymer to a curable elastomer comprising the steps of:a) providing; (i) a fluoropolymer layer comprising a fluorine-containing polymer derived from interpolymerized units of at least one fluorine-containing olefinically unsaturated monomer, with the proviso that if a perfluorinated monomer is present then at least one monomer that contains hydrogen atoms is also present and with the further proviso that the monomer(s) include neither vinylidene fluoride nor monomers which when polymerized form a micro structure similar to polymerized vinylidene fluoride, (ii) a curable elastomer, and (iii) a dehydrofluorinating composition, b) forming a layer comprising a mixture of the curable elastomer and an effective amount of the dehydrofluorinating composition, c) forming a multi-layer article by contacting the layer of the mixture with the layer comprising the fluoropolymer, and d) curing the multi-layer article under conditions sufficient to provide an interlayer adhesion between the curable elastomer layer and the fluoropolymer layer of at least 2 Newtons/cm of width.