and methacrylic acids and their various substituted derivatives cinnamic acid and the like also included are the dicarboxylic acid half esters of hydroxyalkyl acrylates as taught in u s pat no 3 367 992 also included in the definition of the vinyl ester resins used herein are the modified resins in which the resin is post reacted with a dicarboxylic acid anhydride to form pendant half ester groups resins of this type are described in u s pat no 3 564 074 the resins may also be modified by reaction with isocyanates other anhydrides and other reagents reactive with the hydroxyl group produced from the acid epoxide primary resin forming reaction these modification reactions include reaction with up to all of the hydroxy groups present in the vinyl ester resin the laminates of this invention are made by mixing into the crosslinkable composition free radical forming catalysts in known amounts and adding this mixture to a suitable fibrous reinforcement such as asbestos fibers carbon fibers fibrous glass or inorganic fibers examples of these catalysts are benzoyl peroxide tertiary butyl peroxide methylethyl ketone peroxide and the like it is frequently of value to add accelerators such as cobalt naphthenate dimethyl aniline and the like the vinyl ester is rolled sprayed or impregnated into the fibrous reinforcement such as fibrous glass and cured in a manner well known in the.