Patent ID: 7368215

Claim:
A radiation sensitive composition comprising: a carrier solvent, an initiator system comprising an onium salt and an infrared radiation absorber; a polymerizable material; and a polymeric binder that is present as discrete particles and comprises a hydrophobic polymer backbone and a plurality of pendant groups represented by the formula: -Q-W-Y wherein Q is a difunctional connecting group; W is a hydrophilic segment or a hydrophobic segment; Y is a hydrophilic segment or a hydrophobic segment; with the proviso that when W is a hydrophilic segment, Y is a hydrophilic segment or a hydrophobic segment; with the further proviso that when W is a hydrophobic segment, Y is a hydrophilic segment, wherein the pendant groups include polyalkylene oxide segments having from 12 to 250 alkylene oxide units.