Process for the solvent casting of cellulose films using radiation,and products thereof
Abstract
Abstract SIGNIFICANTLY INCREASED PROCESSING RELATES CAN BE OBTAINED WHEN CELLULOSE ESTER DOPES USED IN SOLVENT CASTING PROCESSES FOR MANUFACTURING CELLULOSE ESTER FILM PRODUCTS (FOR PHOTOGRPHIC FILM BASE, FOR EXAMPLE) ARE MODIFIED WITH ONE OR MORE COMPATIBLE MONOMERIC MATERIALS CAPABLE OF UNDERGOING FREE RADICAL POLYMERIZATION, AND THE RESULTING CAST (MODIFIED) DOPES ARE IRRADIATED WITH HIGH-ENERGY RADIATION TO POLYMERIZE THE COMPATIBLE MONOMER PORTION OF THE DOPE BEFORE THE CAST LAYER IS STRIPPED FROM THE CASTING WEB. THE RESULTING FILM PRODUCT HAVE PROPERTIES EQUAL TO OR BETTER HAN CONVENTIONAL CELLULOXE ESTER FILMS IN SPITE OF THE DEGRADATION OF THE CELLULOSE ESTER MATERIAL BY THE HIGHENERGY RADIATION THAT MIGHT HAVE BEEN EXPECTED.
Inventors
- 👤 R Williams
- 👤 B Dotson
- 👤 E Morrison
Bibliographic Details
Claims Analysis
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