Light sensitive mixtures for making repeatedly tonable layers

G - Physics – 03 – F

Patent

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96/155, 96/231

G03F 7/004 (2006.01) G03F 7/28 (2006.01) H01J 9/227 (2006.01)

Patent

CA 1330268

TITLE LIGHT SENSITIVE MIXTURES FOR MAKING REPEATEDLY TONABLE LAYERS ABSTRACT Photosensitive composition for the production of repeatably tonable layers for the manufacture of fluorescent screens with a black matrix for color television tubes, said composition comprising at least one light sensitive 4-(2'- nitrophenyl)-1,4-dihydropyridine compound and at least one organic sulfonic acid.

554349

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