Photopolymerization processes with separation of initiator layer

Details Photopolymerization processes with separation of initiator layer Photopolymerization processes with separation of initiator layer

1990-05-03

1992-05-26

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 31, 427 541, 430271, C08F 246, C08G 0000, C08J 328, B05D 306

Patent

active

051168766

ABSTRACT:
The polymerization of a cationically polymerizable resin especially an epoxy resin is effected by placing it adjacent to but not in contact with a layer comprising a photoinitiator. The preferred initiators are salts which comprise a fluorine atom such as hexafluorophosphate and tetrafluoroborate salts. The initiator may be irradiated separately which facilitates the curing of resins containing pigments. The products are free from contamination by unreacted initiator.

REFERENCES:
patent: 2892712 (1959-06-01), Plambeck
patent: 4081276 (1978-03-01), Crivello
patent: 4156035 (1979-05-01), Tsao et al.
patent: 4193799 (1980-03-01), Crivello

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