Photosensitive composition for making repeatably tonable layers

Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof – With light-absorbing matrix on faceplate

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Details

430 28, 430282, 430291, 430920, G03C 168, G03C 500

Patent

active

049045555

ABSTRACT:
Photosensitive composition for production of repeatably tonable layers for the manufacture of fluorescent screens with a black matrix for color picture tubes, said composition comprising at least one light sensitive 4-(2'-nitrophenyl)-1,4-dihydropyridine compound and at least one organic sulfonic acid.

REFERENCES:
patent: 4263385 (1981-04-01), Pampalone
patent: 4604340 (1986-08-01), Grossa
patent: 4698293 (1987-10-01), Grossa
patent: 4716095 (1987-12-01), Grossa

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