Photoimageable composition with reduced cold flow due to salt-br

Details Photoimageable composition with reduced cold flow due to salt-br Photoimageable composition with reduced cold flow due to salt-br

1988-10-07

1990-07-24

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Stripping process or element

Element

430270, 430271, 430281, 430954, G03C 190, G03C 168

Patent

active

049435132

ABSTRACT:
A photoimageable composition of the negative acting type which includes a binder polymer which contains carboxyl groups is provided with a metal chelate in which the coordination number of the metal is 2 or higher. When the photoimageable composition is coated as a layer on a dry film, the metal chelate reacts with the carboxyl groups of the polymer, releasing a metal ion which bridges carboxyl groups of two or more polymer molecules. This bridging reduces cold flow of the photoimageable composition layer of the dry film.

REFERENCES:
patent: 3016297 (1962-01-01), Mochel
patent: 4284744 (1981-08-01), Shaffer
patent: 4332879 (1982-06-01), Pastor et al.
patent: 4513076 (1985-04-01), Lewis
patent: 4536468 (1985-08-01), Yasui et al.
patent: 4693957 (1987-09-01), Archer et al.

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