Method and composition for obtaining image reversal in epoxy for

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430326, 430917, C03C 1725

Patent

active

052664449

ABSTRACT:
A method and composition are shown for producing a positive-acting photoimagible epoxy resin. In addition to the epoxy resin, the compositions include a dual component cross-linking system which combines a basic curing agent with an onium or arylonium salt. The onium or arylonium salt produces a protic acid upon exposure to irradiation causing a reaction with the basic curing agent which renders the agent ineffective as an epoxy curing agent during subsequent heating. During a subsequent bake operation, only the unexposed regions of the epoxy will cross-link. As a result, the exposed areas wash away, leaving only the cured reverse image.

REFERENCES:
patent: 4054451 (1977-10-01), Schlesinger et al.
patent: 4216288 (1980-08-01), Crivello
patent: 4299911 (1981-11-01), Ochi et al.
patent: 4439517 (1984-03-01), Irving
British Patent Specification 1 330 100.
Abstract of European Patent 0 295 211.
Abstract of European Patent 3 108 881.

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