Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Readily visible image formation
Patent
1980-05-29
1982-01-26
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Readily visible image formation
430 5, 430270, 430300, 430311, 430320, 430322, G03C 500, G03C 164
Patent
active
043129340
ABSTRACT:
Photosensitive compositions containing nitrate ester chain polymers, such as nitrocellulose, molecularly intimately admixed with at least one compound having a free basic amine group, preferably a primary amine group, directly attached to an aromatic ring carbon. On suitable exposure to ultraviolet light, such compositions will print out a useful image directly, or, should a much lesser light exposure be preferred, they can be developed and fixed to an image intensified to useful strength by either heat alone, for amines that are sufficiently volatile at ingredient reaction temperatures, or by solvent selective removal of ingredients from unexposed areas, and subsequently intensified either by heat or overall ultraviolet exposure. Exposed areas of such compositions are more resistant both to volatilization of the amines and to solvent removal than the non-exposed areas. High optical density is attainable using very thin coatings, permitting high resolution grainless images. If developed by solvent selective removal of all ingredients from unexposed areas, the composition is useful as a photoresist material.
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Ott, Cellulose and Cellulose Derivatives, pp. 640-645 (1943).
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Wise, Wood Chemistry, vol. 40 (1962), pp. 1-25.
Quast Kenneth J.
Rice John F.
Yundt Albert P.
Bard Laboratories, Inc.
Brammer Jack P.
Bronstein Sewall P.
Neuner George W.
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