Anionic Polymerization of Chiral Isocyanate and Influence of the Initiator on Changes in the Optical Activity
β Scribed by Yeong-Deuk Shin; Jun-Hwan Ahn; Jae-Suk Lee
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 86 KB
- Volume
- 22
- Category
- Article
- ISSN
- 1022-1336
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## Abstract Influence of the composition of the initiator system employed on polymerization rate, molecular weight and structure of the polymer obtained was studied. At a zinc to aluminium ratio between 0.5 and 1, regular chain structure, and partly isotactic polymer was obtained. The dependence of
Claims have recently been made that absolute rate constants for chain propagation of the unassociated active centers can be made in systems where a high degree of association is present. Anionic polymerization of styrene in nonpolar solvents with lithium as counterion is a typical case. The conditio