Patent ID: 8703385

Claim:
A photocurable composition comprising: a) a solder photoresist component, and b) a silicone-polyether block copolymer, wherein the silicone block comprises ≧35 wt. % of said copolymer, and wherein said silicone-polyether block copolymer is a linear or pendent copolymer of the formulas A SIL a -B PE b , or B PE b -A SIL a -B PE b , wherein A SIL represents a silicone block, B PE represents a polyether block, a and b are weight percents of each block, the silicone-polyether block copolymer being present in amount of 0.1 to 5 parts by weight relative to 100 parts by weight of the photoresist component; c) a photoinitiator; and d) further comprising a thermoset resin in an amount from 5 to 40 parts by weight, based on 100 parts by weight of the photoresist component.