Microcapsules for photographic colour transfer process - contg. di to hexa:(meth)acrylate] of dicyclopentodiene deriv. for high photo-cure speed

摘要

In microcapsules contg. leuco dyestuff(s), photopolymerisation initiator(s) and photopolymerisable monomer(s) (I), the novelty is that (I) is a di- to hexa(meth)acrylate of a dicyclopentadiene deriv. of the formula (I) (where B = alkylene, -OCO-NH-L-, -NHCO-O-L or -(-O-CH(R2)-CH(R3)-)-m-; R1-3 = H or Me; l = 1, 2 or 3; m = 1-5; L = alkylene, opt. with a urethane gp. in the chain. USE/ADVANTAGE - Used in the prodn. of a donor sheet for a photographic colour transfer process. The photopolymerisation of (I) is high and the compsn. changes from liq. to solid very rapidly, which increases the speed.