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Preparation of fine powdery copolymer with crosslinkage and monoalkyl maleate unit
Author(s) -
Mizutani Yukio,
Matsuoka Seishiro,
Iwasaki Masatoshi,
Miyazaki Yoshimichi
Publication year - 1973
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1973.070171209
Subject(s) - copolymer , divinylbenzene , styrene , maleic anhydride , polymer chemistry , polymerization , materials science , polypropylene , methanol , chemistry , organic chemistry , polymer
In order to prepare fine powdery and crosslinked copolymer as a foaming agent and a modifier for polypropylene, the following processes were investigated: (1) polymerization of monoalkyl maleate–styrene–divinylbenzene; (2) polymerization of monoalkyl maleate–maleic anhydride–styrene–divinylbenzene; (3) polymerization of maleic anhydride–styrene–divinylbenzene and esterification of the copolymer with methanol, and (4) polymerization of maleic anhydride–styrene–divinylbenzene in the presence of methanol. The thermal treatment of copolymer thus obtained and the foaming ability for polypropylene were then investigated.