Phototropic photosensitive compositions containing fluoran color

Details Phototropic photosensitive compositions containing fluoran color Phototropic photosensitive compositions containing fluoran color

1980-10-08

1982-08-10

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430270, 430281, 430286, 430275, 430344, 430338, 430332, G03C 152, G03C 168

Patent

active

043438857

ABSTRACT:
Compositions containing a polymerizable, curable or crosslinkable component, a photoinitiator, a fluoran colorformer and a latent activator that releases or promotes the release of a Lewis acid, will become insoluble and change color under the influence of actinic radiation. These compositions are particularly useful to make dry film photoresists, which are widely used in the electronics industry to manufacture printed circuits.

REFERENCES:
patent: 3140947 (1964-07-01), Foris
patent: 3445232 (1969-05-01), Shirey
patent: 3501331 (1970-03-01), Kimura et al.
patent: 3514310 (1970-05-01), Kimura et al.
patent: 3525616 (1970-08-01), Hackmann et al.
patent: 3527639 (1970-09-01), Moraw
patent: 3637390 (1972-01-01), Peterson
patent: 3650754 (1972-03-01), Jones
patent: 3767408 (1973-10-01), Harrison et al.
patent: 3769023 (1973-10-01), Lewis et al.
patent: 3929831 (1975-12-01), Garner et al.
patent: 4007195 (1977-02-01), Garner et al.
patent: 4017313 (1977-04-01), Hartzler
patent: 4065315 (1977-12-01), Yamazaki et al.
patent: 4097288 (1978-06-01), Lawton
Hamb, Application Serial Number 077,379, filed Oct. 1, 1970, laid open to public inspection on Aug. 31, 1971.

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