Steward E Purdy

47343559, Mar 29, 1988

Dec 15, 1986

6/941885

David F. Lewis - Monroe CT
Mark L. Moskowitz - Wayne NJ
Steward E. Purdy - Binghamton NY

GAF Corporation - Wayne NJ

G03C 172
G03C 178

430270

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.

50028529, Mar 26, 1991

Jun 20, 1988

7/232838

David F. Lewis - Monroe CT
Mark L. Moskowitz - Sarasota FL
Steward E. Purdy - Binghamton NY

GAF Chemicals Corporation - Wayne NJ

G03C 172

430270

The invention relates to a polyacetylenic recording film of improved resistance to degradation by UV light and increased sensitivity to ionizing radiation and to the process for producing said film which comprises dissolving polyacetylenic imaging crystals in n-butanol before forming a dispersion in a binder material and before coating on a polyester film base.

49701371, Nov 13, 1990

Mar 9, 1989

7/321136

David F. Lewis - Monroe CT
Steward E. Purdy - Binghamton NY

GAF Chemicals Corporation - Wayne NJ

G03F 7025
B05D 310

430296

This invention concerns a process of mixing a dispersion comprising a substantially crystalline, image receptive polyacetylenic compound in an aqueous non-solvating binder solutions with an effective ripening amount of an organic liquid boiling above 30. degree. C. which is completely miscible with water at least in a proportion of 1:2 part per parts and in which said polyacetylene is soluble for a time and at an elevated temperature sufficient to effect crystalline growth and improved sensitivity to imaging by exposure to a source of radiation.

47849347, Nov 15, 1988

Dec 8, 1987

7/130267

David F. Lewis - Monroe CT
Mark L. Moskowitz - Wayne NJ
Steward E. Purdy - Binghamton NY

GAF Corporation - Wayne NJ

G03C 172
G03C 178

430270

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.