Photocurable acrylic composition, and U.V. curing with developme

Details Photocurable acrylic composition, and U.V. curing with developme Photocurable acrylic composition, and U.V. curing with developme

1989-10-25

1992-08-25

McCamish, Marion

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 14, 522 16, 522 25, 522 31, 522 75, 522152, 522167, 522907, 524 91, 524720, 526259, C08F 250, C08F22606

Patent

active

051419904

ABSTRACT:
In-situ development of an ultraviolet absorber is provided by a compound such as a hydroxy-phenyl-triazole containing a group which protects the absorber during actinically activated polymerization by light at first frequency. After polymerization the protective group is removed by actinic reaction at a second frequency lower than the first frequency. The protective group is formed by replacing the hydrogen of the hydroxyl group with an acyl group containing 1 to 3 carbon atoms or an acryloxy group of the formula: ##STR1## where R.sup.1 is either an alkyl containing 1 to 6 carbon atoms or --CH.dbd.CH.sub.2.

REFERENCES:
patent: 3629191 (1971-12-01), Heller
patent: 4260768 (1981-04-01), Lorenz
patent: 4328346 (1982-05-01), Chung
patent: 4344830 (1982-08-01), Olson
patent: 4374955 (1983-02-01), Gupta
patent: 4508882 (1985-04-01), Yoshida
patent: 4523008 (1985-06-01), Vogl

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