Curable acrylic adhesives

Claim 1

An adhesive composition of a cross-linking type comprising (A) at least one polymer, having in the molecule thereof, at least one , -unsaturated carboxylate group of the following formula (I), (II) or (III) ##STR4## in which x represents a halogen atoms selected from the group consisting of Cl, Br and I, R 1 , R 2 and R 3 independently represents a hydrogen atom or a hydrocarbon residue having 1 to 10 carbon atoms, n is an integer of 2-5, m is an integer of 1-4 and l is an integer of 1-30, wherein the α,β-unsaturated carboxylate groups having been introduced into the polymer at an introduction rate of from 1/100 to 1/30000 mole equivalent/unit weight of the polymer, (B) a polymerizable vinyl group-bearing material containing an acrylic acid, methacrylic acid or a mixture of both as an essential component, (C) a thermoplastic resin selected from petroleum hydrocarbon resin, phenolic resin, xylene resin, rosins or terpene resin, and (D) a curing catalyst, and wherein: the content of (A) is 5 to 95 parts by weight in 100 parts of (A) and (B), the content of (B) is 5 to 95 parts in 100 parts of (A) and (B), the content of (C) is 1 to 300 parts in 100 parts of (A) and (B), the content of (D) is 0.01 to 5 parts in 100 parts of (A) and (B), the content of acrylic acid, methacrylic acid or a mixture of both is not less than 5 parts in 100 parts of (A) and (B).