Ultraviolet curing conformal coating with dual shadow cure

Details Ultraviolet curing conformal coating with dual shadow cure Ultraviolet curing conformal coating with dual shadow cure

1989-02-21

1991-04-16

McCamish, Marion E.

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

Synthetic resins

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

522 99, 528 17, 528 24, 528 32, 528 41, 528 21, G08G 7706, C08G 7720

Patent

active

050083015

ABSTRACT:
Compositions containing an acrylamide functional polydiorganosiloxane, a polydiorganosiloxane having methacryloxyalkyl functionality and silicon-bonded alkoxy functionality, a photoinitiator, and an organic titanate can be improved by using organic peroxides. The improvements are observed in shelf life and pot life of the uncurd composition, and the odor of the cured product. The resulting composition has ternary cure mechanisms with two of these mechanisms being available as shadow cure mechanisms, i.e. cures in areas not exposed to ultraviolet radiation by either exposure to atmospheric moisture or by heating.

REFERENCES:
patent: 4528081 (1985-07-01), Lien et al.
patent: 4591608 (1986-05-01), Okinoshima
patent: 4608270 (1986-08-01), Varaprath
patent: 4824875 (1989-04-01), Gutek
Copending U.S. application, Ser. No. 07/200,827, Filed Jun. 1, 1988.
Copending U.S. application, Ser. No. 07/118,086, Filed Nov. 6, 1987, now U.S. Pat. No. 4,824,875.

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