Patent ID: 8741978
Filing Date: 2014-06-03
Classification: B29C,C08F,C08J,C08L,Y10T

Abstract:
1. A prepreg comprising the reaction product of a curable composition which comprises: a) polymerizable component that comprises i) a reactive material which reactive material is selected from the group consisting of acrylate monomers, acrylate oligomers, acrylate polymers and combinations thereof, ii) a Michael Addition reactive thickening agent having a β-dicarbonyl reactive methylene Michael Donor, and iii) an activated olefin-functional Michael Acceptor; b) an additive component that comprises a catalyst for the Michael Addition reactive thickening agent and a photoinitiator or peroxide or both; and c) a filler wherein the prepreg comprises a gel having a thermosettable resin that is crosslinked with a crosslink density which imparts recoverable elasticity to the prepreg and wherein the prepreg is a castable paste and the polymerizable component comprises about 3 to about 20 weight percent of the thermosettable resin or a prepolymer and the reactive material in amounts of about 5 to about 30 weight percent and the Michael Addition reactive thickening agent comprises the β-dicarbonyl reactive methylene Michael Donor in amounts of about 3 to about 25 weight percent and the activated olefin-functional Michael Acceptor in amounts of about 4 to about 25 weight percent.