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
Thermal polymerizations of alkali 4-(1-bromoethyl)benzoates
β 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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β¦ Synopsis
Abstract
Thermal reactions of alkali salts of 4β(1βbromoethyl)benzoic acid in bulk were investigated. These reactions were found to produce unexpectedly the graft copolymer, poly(4βvinylbenzoate)βgraftβoligo(oxycarbonylβ1,4βphenylenethylidene) (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.
π SIMILAR VOLUMES
Thermal polymerizations of alkali and alkaline earth 4-vinylbenzoates (4-VBAs) in bulk were investigated. The relative reactivity of the alkali salts decreases in the following order: K > Na > Li, which is in reverse order to that of alkali methacrylates. In the polymerization of K-4-VBA at 240Β°C th