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Stepped-up reactivity of a simple lanthanoid initiator. Polymerization of methyl methacrylate initiated with a lanthanoid alkoxide – ketene system

✍ Scribed by Hiroshi Sugimoto; Makoto Kato; Shohei Inoue


Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
323 KB
Volume
198
Category
Article
ISSN
1022-1352

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✦ Synopsis


Abstract

Polymerization of MMA is achieved by using a novel initiator, most probably the lanthanum enolate growing species formed in the polymeritation of ketene with La(O^i^Pr)~3~. The design of this simple initiator is based on the stimulation of the reactivity of La(O^i^Pr)~3~, which by itself is inactive, upon the reaction with ketene.


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Lanthanoid alkoxide as a novel initiator
✍ Hiroshi Sugimoto; Masao Kanai; Shohei Inoue 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 450 KB 👁 2 views

The present study demonstrates the polymerization of ketenes by using lanthanoid isopropoxide as a novel initiator to produce a polyester of high molecular weight. This is the first example of an efficient room-temperature polymerization of ketenes. As a result of model reactions, it is indicated th