Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Forming nonplanar surface
Patent
1989-01-23
1990-02-06
Michl, Paul
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Forming nonplanar surface
430270, 430330, 522905, 522904, 522148, 522164, 427 531, 427 541, G03C 516, B05D 306
Patent
active
048988065
ABSTRACT:
A coated photosensitive material on a support comprising a layer of polyamic acids and polyamic acid aryl esters derived from tetracarboxylic acids or aminodicarboxylic acids containing a benzophenone structural unit and aromatic diamines which are substituted in both ortho-positions by at least one amino group. The material is autophotocrosslinkable and is suitable for producing protective coatings and photographic images, with corresponding polyimides being formed after irradiation by a thermal aftertreatment.
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Ciba-Geigy Corporation
Falber Harry
Hamilton Cynthia
Michl Paul
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