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CCP Composites Patents Polyester Acrylic Resin



Published December 11, 2013
U.S. 8,546,486 B2
CCP Composites US LLC has been granted a patent for a thermosetting, crosslinkable resin composition suitable for preparing a gel coat, the composition is comprised of: a polyester acrylic polymer having an average of more than two polymerizable carbon-carbon double bonds in each molecule, the carbon-carbon double bonds in the polyester acrylic polymer being from a reaction product of a saturated polyacid half-ester having an average acid functionality of two or more and an unsaturated epoxide monomer in about chemically equivalent amounts to furnish one epoxy group per carboxyl group, the saturated polyacid half-ester being the reaction product of one or more polyols having an average of at least two hydroxyl groups in the molecule with one or more saturated polycarboxylic acids or acid anhydrides; the polyester acrylic polymer containing less than 10 weight percent aromatic content and having a number average molecular weight of 560-2500 and a viscosity less than 1500 cps at 70 weight percent NVM solids dispersed in 30 weight percent styrene based on the total weight of the polymer and the styrene; the polyester acrylic polymer blended with a polymerizable vinyl monomer.


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