UV-active binding agent

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
• R1 is H, CH3 or CH2OH and
• R2 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
• R1 is H, CH3 or CH2OH and
• R3 is —(CH2)n—, —CH2—CH(CH3)—CH2— or —CH2CH(CH3)— or —CH(CH3)CH2— 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.