Patent ID: 8901254

Claim:
A process for preparing a polycarbonate diol diacrylate which comprises reacting a polycarbonate diol represented by the formula (I): wherein R 1 is the same or different, each represents a divalent group comprising one or more linear, branched or cyclic alkylene group, the divalent group may have a substituent(s), and/or one or more non-terminal carbon atoms may be replaced by a divalent aromatic group, a divalent heterocyclic group, an oxygen atom or a sulfur atom, or represents a divalent cross-linked carbon ring group, n represents an average polymerization degree, and a number of 1 to 50, with a vinyl acrylate compound represented by the formula (II): wherein R 2 represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms, R 3 represents a hydrogen atom or a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms in the presence of a hydrolase.