| 主权项 |
1. A photocurable composition comprising:
a) a solder photoresist component, and b) a perfluoropolyether silane of the formula:
(RPFPE—X1—CO—NH)x—R1—(NH—CO—X2—RSilyl)y,where RPFPE represents a perfluoropolyether group of the formula RPFPE*-Q where RPFPE* is a monovalent perfluoropolyether group, and Q is a divalent alkylene group, said alkylene optionally containing one or more catenary (in-chain) nitrogen or oxygen atoms, and optionally containing one or more sulfonamide, carboxamido, or carboxy functional groups,
X1 and X2 are independently —O—, —S— or —NR2— where R2 is H or C1-C4 alkyl,R1 is a residue of a polyisocyanate,RSilyl is a silane group-containing moiety containing one or more silyl groups,subscripts x and y are each independently 1 to 6, and c) a free-radical photoinitiator. |
