Process for preparing high-impact vinyl aromatic polymers

Details Process for preparing high-impact vinyl aromatic polymers Process for preparing high-impact vinyl aromatic polymers

1975-06-30

1976-11-16

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08L 908

Patent

active

039924840

ABSTRACT:
Disclosed is a process for the preparation of high-impact vinyl aromatic polymers by mass pre-polymerizing a vinyl aromatic hydrocarbon in the presence of a rubber, and suspension polymerizing the mass pre-polymer in the presence of hydroxyapatite and at least one ethoxysulphate of the formula RO (C.sub.2 H.sub.4 O).sub.x SO.sub.3 M, wherein R is an alkyl radical containing from 10 to 16 carbon atoms, x is from 2 to 6, and M is Na, K, N, NH.sub.4, an amine group, or an alkanol amine group.

REFERENCES:
patent: 3373227 (1968-03-01), Finestone
patent: 3644587 (1972-02-01), Finberg
patent: 3781383 (1973-12-01), Finestone
patent: 3781384 (1973-12-01), Finestone
Schwartz, "Surface Active Agents", vol. 1, 1949, Interscience Pub., New York, pp. 77-79.
Kirk-Othmer, "Encyclopedia of Chemical Technology," vol. 19, 2nd Ed., 1969, Interscience, New York, pp 527-529.

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