Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1986-12-15
1988-03-29
Louie, Won H.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430271, 430296, 430346, 430495, G03C 172, G03C 178
Patent
active
047343559
ABSTRACT:
The process for improving radiant energy sensitivity of a film base coated with a dispersion of a normally crystalline polyacetylenic compound in a non-solvating liquid which is dried on the film surface; said polyacetylenic compound preferably having at least two conjugated acetylenic linkages and containing from 20 to 60 carbon atoms. The process comprises dispersing said normally crystalline polyacetylenic compound in the non-solvating liquid to a concentration of from about 2 to about 50% polyacetylene crystalline solids and ageing said dispersion by (a) storing at a temperature of between about 0.degree. C. and about 12.degree. C. for a period of from about 1 to about 30 days or (b) freezing said dispersion at a temperature between about -78.degree. C. and about -1.degree. C. for a period of from about 1 to about 75 hours or (c) a combination of the above ageing techniques any or all of which are completed before drying said dispersion on a substrate.
REFERENCES:
patent: 4066676 (1978-01-01), Bloom et al.
patent: 4581315 (1986-04-01), Garito
Lewis David F.
Moskowitz Mark L.
Purdy Steward E.
GAF Corporation
Louie Won H.
Maue Marilyn J.
Ward Joshua J.
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