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
1992-09-10
1993-11-30
Kight, III, John
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
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.
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Carpenter, Jr. Burton J.
LaTorre Joseph
McMaster Michael G.
Simpson Logan L.
Dillon Andrew J.
Gunter Jr. Charles D.
International Business Machines - Corporation
Kight III John
Mosley T.
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