Aminoketone sensitizers for photopolymer compositions

Details Aminoketone sensitizers for photopolymer compositions Aminoketone sensitizers for photopolymer compositions

1994-04-28

1995-05-16

Dote, Janis L.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430288, 430919, 430920, 430923, 430924, 430926, 522 14, 522 15, 522 24, G03C 173, G03F 7028

Patent

active

054159768

ABSTRACT:
Aminoketone-substituted coumarin sensitizers having tethered tertiary amino groups are described which have extremely good photosensitivity. The sensitizers of the instant invention have the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group having 1 to 6 carbon atoms, and R.sub.3 and R.sub.4 each represent hydrogen; or at least one of R.sub.1 and R.sub.3 or R.sub.2 and R.sub.4 together represent an alkylene group having 2 to 4 carbon atoms,

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