Patent ID: 9074112
Filing Date: 2015-07-07
Classification: B29B,C08L,C09J

Abstract:
1. An adhesive composition, curable via free radical polymerisation, the composition comprising, based on the total weight of components (A), (B), (C) and (D): (A) from 35% to 65% (meth)acrylate ester monomer(s), at least 70 wt % of which is methyl methacrylate; (B) from 3 to 32% chlorinated elastomeric polymer(s) selected from chlorinated polyethylenes and polychloroprenes; (C) from 10 to 35% core-shell impact modifier(s), provided that the combined amount of (B) and (C) is in the range of 30 to 45 wt %; and (D) from 1% to 20% urethane (meth)acrylate oligomer(s), wherein the urethane (meth)acrylate oligomer (D) is derived from: (i) a di- or higher isocyanate having at least two isocyanate groups; (ii) a branched chain-extending reagent which has at least three hydroxyl groups, each capable of reaction with an isocyanate group of (i), which is selected from a polyester polyol and a polyether polyol; and (iii) a hydroxymethacrylate component or hydroxyacrylate component.