Toughened mercaptosiloxane modified bulk polymerized vinylic pol

Details Toughened mercaptosiloxane modified bulk polymerized vinylic pol Toughened mercaptosiloxane modified bulk polymerized vinylic pol

1976-04-23

1978-01-24

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260827, 260 296NR, 260 297NR, 260 297RP, C08L 8310

Patent

active

040704149

ABSTRACT:
Improvement in impact strength of certain vinylic polymers is obtained by dissolving a mercaptosiloxane-dimethylsiloxane copolymer in a vinylic monomer and converting the monomer to a polymer by bulk or suspension polymerization in the presence of a free radical generator. For example, a copolymer of mercaptopropylmethylsiloxane and dimethylsiloxane is dissolved in styrene and the styrene is copolymerized with acrylonitrile in bulk and/or in water suspension using benzoyl peroxide as a catalyst.

REFERENCES:
patent: 3873499 (1975-03-01), Michael et al.
patent: 3879491 (1975-04-01), Lindsey et al.
patent: 3923923 (1975-12-01), Fiedler

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