Title:
MANUFACTURE OF POLYSTYRENE BROMIDE
Document Type and Number:
Japanese Patent JPS55151007
Kind Code:
A
Abstract:
1. A process for the manufacture of brominated products of polystyrene, said products containing at least 50% by weight of bromine, by direct bromination of polystyrene obtained by radically initiated polymerisation, in solution and in the presence of a Lewis acid catalyst at low temperature, which process comprises carrying out the bromination in a partially halogenated hydrocarbon as solvent, in the presence of a divalent and/or trivalent iron salt or oxide as catalyst, in the temperature range from -30 degrees C to +30 degrees C.
Inventors:
TOOMASU KAINMIYURAA
ROOTAA BUKUSUBAUMU
ROOTAA BUKUSUBAUMU
Application Number:
JP6048580A
Publication Date:
November 25, 1980
Filing Date:
May 07, 1980
Export Citation:
Assignee:
CIBA GEIGY AG
International Classes:
C08F8/00; C08F8/20; C08L101/00; C08F8/22; C08F112/08; (IPC1-7): C08F8/22; C08L101/00
Domestic Patent References:
| JPS5360986A | 1978-05-31 |
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