Patent ID: 7601765

Claim:
A process for preparing poly(meth)acrylates curable with at least one of actinic radiation or dual-cure utilizing actinic radiation and thermal cure, comprising the following steps: a) preparing a poly(meth)acrylate containing hydroxy-functional side chains by polymerizing aa) at least one (meth)acrylate of the general formula (I) as component A in which R 1 is H, CH 3 or CH 2 OH and R 2 is an alkyl radical which is unsubstituted or substituted by functional groups chosen from the group consisting of acrylic, ether, amino, epoxy, halogen and sulfonic acid groups, and ab) at least one hydroxyalkyl (meth)acrylate of the general formula (II) as component B in which R 1 is H, CH 3 or CH 2 OH and R 3 is —(CH 2 ) n —, —CH 2 —CH(CH 3 )—CH 2 — or —CH 2 CH(CH 3 )— or —CH(CH 3 )CH 2 — or n is at least 2, and ac) if desired, further comonomers, copolymerizable with the (meth)acrylates of the general formula (I) and (II), as component C, and ad) if desired, auxiliary monomers as component D; and b) transesterifying or esterifying the poly(meth)acrylate containing hydroxy-functional side chains with a (meth)acrylate or (meth)acrylic acid in the presence of an enzyme which catalyzes the transesterification or esterification.