G - Physics – 03 – F
Patent
G - Physics
03
F
96/218
G03F 7/038 (2006.01) G03F 7/022 (2006.01) G03F 7/26 (2006.01) G03F 7/38 (2006.01)
Patent
CA 1282627
ABSTRACT A process for converting a normally positive working photo- sensitive 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.
515742
Durham Dana
Jain Sangya
Mammato Donald
Spak Mark A.
American Hoechst Corporation
Durham Dana
Fetherstonhaugh & Co.
Hoechst Celanese Corporation
Jain Sangya
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