Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1992-11-19
1995-03-21
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Composition or product which contains radiation sensitive...
430191, 430192, 430193, 430272, 430277, 430278, G03F 7023
Patent
active
053994566
ABSTRACT:
A process for converting a normally positive working photosensitive composition to a negative working composition. One forms a composition containing an alkali soluble resin, a 1,2 quinone diazide-4-sulfonyl compound and an acid catalyzed crosslinker in a solvent mixture. After drying and imagewise exposing, the composition is baked and developed to produce a negative image.
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Durham Dana
Jain Sangya
Mammato Donald
Spak Mark A.
Bowers Jr. Charles L.
Hoechst Celanese Corporation
Kalyanaraman Palaiyur S.
Young Christopher G.
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