Process for improving photo sensitive material of polyvinylpyrro

Details Process for improving photo sensitive material of polyvinylpyrro Process for improving photo sensitive material of polyvinylpyrro

1991-12-20

1993-06-15

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430 28, G03C 172, G03C 500

Patent

active

052197042

ABSTRACT:
Described is a process for improving a photo sensitive material of polyvinylpyrrolidone type by improving its chemical and ability to maintain a straight line property even after etching. The present invention proposes such that at least one of a nitrate, a sulfate or a hydrochloride of two or three valanced metal ions is added to polyvinylpyrrolidone in the ratio of 0.01 to 10% and then well stirred with the appropriate amount of an aqueous ammonia at the normal or room temperatures to obtain a pH of 7 to 10 thereby producing a metal hydroxide.

REFERENCES:
patent: 4273842 (1981-06-01), Nonogaki et al.
patent: 4735880 (1988-04-01), Morishita et al.

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