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US 3,945,833 AGranted
Photosensitive coating composition
AssigneeToyo Ink Manufacturing Co., Ltd.
InventorsMasujiro Sumita, Ryozo Konno, Toru Takeuchi
Life of this patent
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Abstract
A photosensitive coating composition comprising (1) a prepolymer containing radically cross-linkable ethylenically unsaturated double bonds and (2) a sensitizer which comprises predominantly a mixture of (a) benzophenone, halogenated benzophenone or a combination thereof and (b) 4,4'-bis(diethylamino)benzophenone in a weight ratio of about 1:2 to 10:1.
Claims7
A photosensitive coating composition comprising
- 1. a prepolymer containing radically cross-linkable ethylenically unsaturated double bonds, and
- 2. a sensitizer which comprises a mixture of (a) a halogenated benzophenone (b) 4,4'-bis(diethylamino)benzophenone in a weight ratio of (a) to (b) of about 1:2 to 10:1.
Dependencies are inferred from the claim text.