Radical initiator-curable diallyl ester compositions and cured resins obtained therefrom

A radical initiator-curable diallyl ester composition consisting essentially of 80 - 100% by weight of the following components (A) and (B):

• A. a prepolymer wherein
• 1. 70 - 100 mole % of its structural units are derived from a diallyl ester selected from the group consisting of
• a. a diallyl ester of benzenedicarboxylic acid having the formula (I) ##SPC6##
• wherein the R's, which may be the same or different, are independently selected from the group consisting of hydrogen and methyl, and n is an integer from 1 to 2,
• b. a diallyl ester of cyclohexanedicarboxylic acid having the formula (II) ##SPC7##
• wherein the R's and n are as above defined, and
• c. a mixture of the above (a) and (b);
• and
• 2. 30 - 0 mole % of its structural units are derived from other compounds selected from monomeric diallyl esters of dibasic acids and other monomers and polymers, said compound being copolymerizable with said (a) - (c) under the conditions of forming said prepolymer;
• and
• B. a monomer of a diallyl ester of naphthalenedicarboxylic acid having the formula (III) ##SPC8##
• wherein the R's are as above defined, and m is an integer from 1 to 4, which groups --COOCH.sub.2 CR=CH.sub.2 are attached in a position selected from the 2,7-, 1,5- and 2,6-positions;
• said monomer (B) being contained in an amount of 5 - 50% by weight based on said prepolymer (A), and the remaining 20 - 0% by weight of said composition being a compound (C) other than said (A) and (B), said (C) being selected from the group consisting of monomers and polymers copolymerizable with a member selected from the group consisting of said prepolymer (A) and said monomer (B) at the conditions under which said composition is cured.