Patent ID: 6506541
Filing Date: 2003-01-14
Classification: B41M,B41N,C08L,G03F,Y10S

Abstract:
A photo-curable polymer composition comprising:(a) a first block copolymer comprising at least two external blocks A of a polymerised mono-vinyl aromatic monomer, at least one internal block B of a polymerised conjugated diene monomer, and, optionally, a residue derived from a di- or multi-functional coupling agent containing alkoxy or epoxy functional groups, wherein the total polymerised mono-vinyl aromatic monomer content in from 5 to 25% by weight of the block copolymer; (b) 5 to 70% by weight of a second block copolymer having one block A of a polymerised mono-vinyl aromatic monomer, at least one block B of a polymerised conjugated diene monomer, and, optionally, a residue derived from a di- or multi-functional coupling agent containing alkoxy or epoxy functional groups, wherein the total polymerised mono-vinyl aromatic monomer content is from 5 to 50% by weight of the block copolymer; (c) at least 5% by weight of a low molecular weight block copolymer, wherein the total of (b) and (c) is from 15% by weight to 80% by weight of the total of (a), (b), and (c), the low molecular weight block copolymer having one block A of a polymerised mono-vinyl aromatic monomer, and at least one block B of a polymerised conjugated diene monomer, and having a weight average molecular weight from about 1,000 to about 35,000; and (d) a photo-initiator.