Patent ID: 6846614

Claim:
An infrared radiation-sensitive composition comprising: (a) a first polymeric binder which is free of acidic moieties; (b) a second polymeric binder comprising polyether moieties; (c) an initiator system comprising: (i) at least one infrared radiation absorbing material comprising a triarylamine dye, thiazolium dye, indolium dye, oxazolium dye, cyanine dye, polyaniline dye, polypyrrole dye, polythiophene dye or phthalocyanine pigment; (ii) at least one polyhaloalkyl-substituted compound capable of producing radicals, wherein ox (i) <red (ii) +1.6 eV and wherein ox i is the oxidation potential of the infrared radiation absorbing material in eV and red (ii) is the reduction potential of the polyhaloalkyl-substituted compound in eV; and (iii) at least one compound represented by the formula I R 4 —(CR 5 R 6 ) r —Y—CH 2 COOH (I) wherein Y is O, S or NR 7 , each of R 4 , R 5 and R 6 is independently hydrogen, C 1 -C 4 alkyl, substituted or unsubstituted aryl, —COOH or NR 8 CH 2 COOH, R 7 is a hydrogen, C 1 -C 6 alkyl, —CH 2 CH 2 OH, or C 1 -C 5 alkyl substituted with —COOH, R 8 is —CH 2 COOH, —CH 2 OH or —(CH 2 ) 2 N(CH 2 COOH) 2 , and r is 0, 1, 2 or 3, and wherein at least one of R 4 , R 5 , R 6 , R 7 and R 8 comprises a —COOH moiety or salts thereof; and (d) a free radical polymerizable system comprising at least one unsaturated free radical polymerizable monomer, free radical polymerizable oligomer, or a polymer containing C═C bonds in the back bone, side chains, or both.