G - Physics – 03 – F
Patent
G - Physics
03
F
96/172
G03F 7/00 (2006.01) G03F 7/033 (2006.01)
Patent
CA 1203107
ABSTRACT A high molecular weight butadiene/acrylonitrile copolymer is used in a photosensitive composition containing the following: (A) 40 to 90% by weight of the total composi- tion of a high molecular weight butadiene/acrylonitrile carboxylated copolymer having a number average molecular weight of 30,000 to 125,000, an acrylonitrile content of 10 to 50%, and a carboxyl content of 1% to 15% by weight. (B) 5 to 60% by weight of the total composi- tion of a high molecular weight butadiene/acrylonitrile noncarboxylated copolymer having a number average molecular weight of 50,000 to 100,000, an acrylonitrile content of 10 to 30% so that the combination of the carboxylated and non carboxylated high molecular weight copolymers give a composition with a carboxyl content of 3 to 10%. (C) 2 to 40% by weight of the total composi- tion of an addition photopolymerizable ethylenically unsaturated monomer and (D) 0.1 to 10% by weight of the total compo- sition of a photoinitiator activatable by actinic radiation.
434153
Gowling Lafleur Henderson Llp
Pt Sub Inc.
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