Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1990-05-25
1993-06-08
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...
430168, 430169, 430272, 430277, 430278, 430296, 430325, 430328, 430330, 430942, 430967, G03F 7023, G03F 709, G03F 730, G03F 738
Patent
active
052178404
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
Roberts Richard S.
Young Christopher G.
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