Vesicular film elements
AssigneeGAF Corporation
InventorsWilliam L. Mandella, James R. Kuszewski
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Abstract
A light-sensitive vesicular imaging composition comprising a vesiculating agent which liberates gas upon exposure to activating radiation and a matrix which is a novolac branched epoxy resin of a bis-glycidyl ether and a dihydric phenol.
Claims4
An imaging film element for formation of a vesicular image, comprising a film support and coated on said support, a composition comprising a binder and an imaging amount of a photosensitive vesiculating agent capable of generating nitrogen gas upon exposure to radiation dispersed therein, said binder being a substantially branched film-forming epoxy resin copolymer of a bis-glycidyl ether, a sulfur containing diphenol of the formula ##STR3## wherein X is 1 or 2.
In a vesicular film, and improved binder for the vesiculating agent comprising a substantially branched epoxy resin consisting essentially of resorcinol bis-glycidyl ether, bis 4,4' sulfonyl diphenol, and a phenol-formaldehyde novolac.
Dependencies are inferred from the claim text.