Bi(phosphine) photoinitiators and chain transfer agents

Details Bi(phosphine) photoinitiators and chain transfer agents Bi(phosphine) photoinitiators and chain transfer agents

1993-11-17

1995-07-25

Chapman, Mark A.

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

Synthetic resins

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

522 49, 522 64, 568 8, 526193, C08F 246

Patent

active

054362806

ABSTRACT:
Vinyl monomers are polymerized in the presence of bi(phosphine oxides) and bi(phosphine sulfides) which can function as photoinitiators and chain transfer agents in the polymerization of vinyl monomers. The incorporation of such organo-phosphorous compounds into such polymers either as an integral part thereof, or as an admixture, results in improved thermal stability of the polymers.

REFERENCES:
patent: 3012075 (1961-12-01), Niebergall
patent: 4009116 (1977-02-01), Bahr
patent: 4082724 (1978-04-01), Hewertson
Chem. Abstracts--Emoto et al "Oxidation of Diphosphine Dioxides . . . " vol. 79, No. 3, Abstract #17797u, p. 382, 1973.
Keck et al. Chem. Abstracts--"Mass Spectrometric . . . ", vol. 92, No. 3, p. 611, 1980, Abst. No. 21626y.
Kawashima et. al. "Synthesis and Thermolysis . . . Disulfides", vol. 99, No. 25, p. 653. Abst. No. 212602s, 1983.
Angelo et al. "Photochemical Reactions . . . ", vol. 103, No. 5, p. 522, Abst. No. 37548f.

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