Photographic polymeric composition containing a leuco dye cyanid

Details Photographic polymeric composition containing a leuco dye cyanid Photographic polymeric composition containing a leuco dye cyanid

1974-10-07

1977-02-01

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

526 77, 526218, 526263, 260 37N, 260 42, G03C 152

Patent

active

040060233

ABSTRACT:
A hard, clear, glassy, smooth polymer with a dry surface having a dye precursor therein which forms a permanent color at those areas of the solid polymer that have been irradiated with ultra-violet or ionizing radiation is formed by combining vinyl and/or acrylic monomers, a triphenylmethane cyanide dye precursor and a chemical initiator that is compatible with the dye cyanide and polymerizing in the presence of a slight excess of hydrogen ions in an inert atmosphere.

REFERENCES:
patent: 2528496 (1950-11-01), Chalkley
patent: 2643990 (1953-06-01), Ham
patent: 2676887 (1954-04-01), Chalkley
patent: 3306748 (1967-02-01), Chalkley

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