Patent ID: 7368594

Claim:
A vinyl ether group-containing (meth)acrylic ester composition which comprises a radical polymerization inhibitor and a vinyl ether group-containing (meth)acrylic ester represented by the following formula (1): CH 2 ═CR 1 —COO—R 2 —O—CH═CH—R 3 (1) in the formula, R 1 represents a hydrogen atom or a methyl group, R 2 represents a straight, branched or cyclic alkylene group containing 2 to 20 carbon atoms, an alkylene group containing 2 to 20 carbon atoms and having at least one oxygen atom in the form of an ether linkage and/or an ester linkage within the structure thereof, or an aromatic group which contains 6 to 11 carbon atoms and may optionally be substituted, and R 3 represents a hydrogen atom, a straight, branched or cyclic alkyl group containing 1 to 10 carbon atoms, or an aromatic group which contains 6 to 11 carbon atoms and may optionally be substituted, wherein the total amount of the radical polymerization inhibitor and the vinyl ether group-containing (meth)acrylic ester is not less than 95% by weight relative to the vinyl ether group-containing (meth)acrylic ester composition, and wherein the amount of the radical polymerization inhibitors is not less than 0.00001% by weight but not more than 5% by weight relative to the vinyl ether group-containing (meth)acrylic ester, and wherein said vinyl ether group-containing (meth)acrylic ester composition is placed in a container and a molecular oxygen concentration in the gaseous phase in the container is 0.01 to 15% by volume.