Sensitized photoinitiator system for addition polymerization

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing

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430281, C08F 400

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active

049218271

ABSTRACT:
A visible light sensitive free radical polymerization photoinitiator composition comprising (a) an initiator selected from diaryl iodonium salts, halogenated triazines, and triaryl sulfonium salts having a reduction potential in the range 0.0 to -1.5 eV, and (b) at least one merocyanine sensitizer containing a constrained alkylamino group.
These initiator compositions give high speed polymerization reactions with ethylenically unsaturated monomers and oligomers.

REFERENCES:
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patent: 4257915 (1981-03-01), Eaton
patent: 4278751 (1981-07-01), Specht et al.
patent: 4791045 (1988-12-01), Mitra etal.
patent: 4792506 (1988-12-01), DeVoe et al.
"Colloids and Surfaces in Reprographic Technology," T. L. Penner and D. Mobius, ACS Symposium Series 200, M. Hair and M. D. Croucher, Eds. 1982, pp. 111-122.
U.S. Patent Application Ser. No. 07/034,065, filed Apr. 2, 1987.

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