Stabilized polymerizable vinyl urethane resin compositions

Claim 2

A composition comprising (a) a vinyl or vinylidene monomer capable of free radical polymerization, and (b) a polymerization inhibitor having the following general formula ##STR9## wherein R' is hydrogen or an alkyl group containing from 1 to 4 carbon atoms, R 1 , r 2 , r 3 and R 4 are alkyl groups containing from 1 to 5 carbon atoms, and R 5 , r 6 , r 7 and R 8 are hydrogen or alkyl groups containing from 1 to 5 carbon atoms provided that only two of these may be a secondary or tertiary alkyl group, and (c) a vinyl urethane resin comprising the reaction product of a polyhydric alcohol, a polyisocyanate and a hydroxyl terminated ester of acrylic or methacrylic acid.

Claim 3

A composition, as claimed in claim 1, wherein the amount of vinyl urethane resin is equal to up to about 50 percent by weight based upon the total weight of the composition.

Claim 4

A composition, as claimed in claim 1, wherein the vinyl urethane resin has the following general formula: R--A--M].sub.y A--I--B wherein A is a radical derived from a polyoxyalkalene bisphenol A having the following formula: ##STR10## wherein R' is an alkylene group, X is halogen or methyl, a is an integer equal to from 0 to 2, and m and n are integers each of which is equal to at least 1 and the sum of which is equal to from about 2 to about 6; M is a radical derived from an unsaturated, aliphatic, dicarboxylic acid or an anhydride thereof; I is a radical derived from a diisocyanate; B is a radical derived from a hydroxy-terminated ester of acrylic or methacrylic acid; Y is an integer equal to from 1 to about 5; and R is selected from the group consisting of hydroxyl, I and I-B, wherein I and B are as defined above.