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Thermal polymerizations of alkali 4-(1-bromoethyl)benzoates

✍ Scribed by Mari Inoki; Fumihiko Akutsu; Yasuyuki Kitayama; Koichi Shinoda; Yoshio Kasashima; Kiyoshi Naruchi


Book ID
102490267
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
351 KB
Volume
17
Category
Article
ISSN
1022-1336

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✦ Synopsis


Abstract

Thermal reactions of alkali salts of 4‐(1‐bromoethyl)benzoic acid in bulk were investigated. These reactions were found to produce unexpectedly the graft copolymer, poly(4‐vinylbenzoate)‐graft‐oligo(oxycarbonyl‐1,4‐phenylenethylidene) (1). The relative reactivity of the oligocondensation as well as the vinyl polymerization of the salts decreased in the following order: K > Na > Li. The reaction polymerization rate proceeded rapidly during the initial 15 min, and then slowed down.


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Thermal polymerizations of alkali 4-(2-bromoethyl)benzoates (2-BEBAs) were investigated. The polymerization of the lithium salt at 220Β°C for 2 h under reduced pressure in bulk, followed by esterification, produced poly(methyl 4-vinylbenzoate), having a number-average molecular weight (M n ) of 9500

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