| 摘要 |
PURPOSE:A photosetting coating composition that is composed of monomers and/or prepolymers having ethylenically unsaturated bonds that are radically crosslinkable, specific two kinds of photopolymerization initiators, thus hardening rapidly by ultraviolet rays. CONSTITUTION:To monomers and/or prepolymers having ethylenically unsaturated double bonds that are radically crosslinkable as acrylic or methacrylic acid or their esters, unsaturated polyesters, are incorporated (A) 4-dialkylaminoacetophenone (alkyl is methyl or ethyl), (B) a compound of the formula (R1, R2 are H. 1-3C alkyl, halogen) at a weight ratio of 2:1-1:100, preferably 1:2-1:50 as a photopolymerization initiator. |
