Patent ID: 8070908

Claim:
A composition comprising (a) at least one (meth)acrylic ester E obtained by esterification of an alcohol ALC and methacrylic or acrylic acid, said alcohol ALC contains at least 5 carbon atoms; and (b) at least a rubber block co-polymer RS being solid at room temperature and which is a co-polymer of styrene and butadiene and/or isoprene and/or ethylene propylene diene monomer; and (c) at least a polymer PL having pending (meth)acrylic groups and which has a molecular weight between 200 and 9000 g/mol; and wherein the polymer PL is a butadiene/acrylonitrile co-polymer with terminal (meth)acrylic groups; or a polyurethane (meth)acrylate obtained by reaction of an isocyanate terminated polyurethane prepolymer with a (meth)acrylic ester comprising a hydroxyl group wherein said isocyanate terminated polyurethane prepolymer is obtained by the reaction of a polyisocyanate and a polyol OHâ€”Râ€”(OH) q with qâ‰§1 and R stands for a polymeric backbone with hetero atoms in the backbone or in pendent side chains; or is obtained by esterification of an alcohol ALC-II and methacrylic or acrylic acid, said alcohol ALC-II exhibiting the structural element in its chemical formula (I) or (II) wherein nâ‰§0, mâ‰§0 and n+mâ‰§3-50 and 3â‰§pâ‰§16, wherein the weight ratio RS/E of the rubber block co-polymer RS to the (meth)acrylic ester E is â‰§30%, the weight ratio of the rubber block co-polymer RS to the polymer RS/PL is from 1/1.5 to 5/1, and the amount of the rubber block co-polymer RS is 1 to 40% by weight based on the weight of the composition.