In-air curable resin compositions

Claim 1

A liquid in-air curable resin composition comprising A. an unsaturated oligomer having a number average molecular weight of 500 to 4000 and containing at the end of the molecule at least two member selected from the group consisting of acryloyl and methylacryloyl groups, and at least one ethylenically unsaturated double bond in the oligomer chain which oligomer is expressed by the following formula: ##STR8## wherein R 1 is a hydrogen atom or a methyl group, Y represents an ethylenically unsaturated polyepoxide or polyester oligomer residue containing up to 15 acyl structural units derived from ethylenically unsaturated monomers bonded to each other through --O-- or --COO--, and m is a number of from 2 to 10 and B. an oligomer having a number average molecular weight of 500 to 4000 which contains at the ends of the molecule at least two member selected from a group conssiting consisting acryloyl and methacryloyl groups, and at least one pendant allyloxy group in the oligomer chain, said oligomer having an allyloxy group equivalent of not more than 500 and being free from an ethylenic internal double bond in the oligomer chain, said oligomer being expressed by the following formula ##STR9## wherein R 1 is a hydrogen atom or a methyl group, Z represents an oligomer residue defined as Y but not containing an ethylenic internal double bond, p is a number of from 2 to 10, and q is a number of from 1 to 15, the weight ratio of (A) to (B) being 8:2 to 2:8.