Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Antihalation or filter layer containing
Patent
1993-12-20
1995-03-07
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Antihalation or filter layer containing
430339, 430372, 430513, 430516, 430517, 430529, 430533, 430600, 430613, 430634, G03C 1498, G03C 183, G03C 1815
Patent
active
053957474
ABSTRACT:
Certain poly(lactic acid) and poly(glycolic acid) polymers or copolymers, and certain carbonates, lactones, lactates, lactylates, lactides, glycolates, glycolylates, and glycolides have been found to stabilize thermal-dye-bleach constructions containing a dye in association with a thermally-generated-bleaching agent. Preferably, the thermally-generated-bleaching agent is a thermal-carbanion-generating agent such as a quaternary ammonium salt of a phenylsulfonylacetic acid or a thermal-nucleophile-generating agent such as an ammonium salt of a phenylsulfonylacetic acid. These materials have been found to be particularly effective when used in acutance and antihalation systems for photothermographic and photographic elements.
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Helland Randall H.
Mader Roger A.
Ramsden William D.
Chea Thorl
Griswold Gary L.
Kirn Walter N.
Lagaly Thomas C.
Minnesota & Mining Manufacturing Company
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