NOVEL PLATINUM-CONTAINING INITIATORS FOR RING-OPENING POLYMERIZATIONS

被引:32
作者
CRIVELLO, JV
FAN, M
机构
[1] Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York
关键词
RING-OPENING POLYMERIZATION; EPOXIDE POLYMERIZATION; CATIONIC POLYMERIZATION; TRANSITION METAL INITIATORS; PLATINUM INITIATORS; PLATINUM COLLOID INITIATORS;
D O I
10.1002/pola.1991.080291303
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A novel class of platinum-based initiating systems for the ring-opening polymerization of a wide variety of heterocyclic compounds including epoxides, oxetanes, and 1,3,5-trioxane have been discovered. In addition to a platinum complex as a catalyst, a cocatalyst, consisting of a compound or polymer containing silicon-hydrogen bonds must also be present. This article reports on a preliminary survey of the scope and limitations of these new initiator systems. Particular emphasis in this article has been placed on the ring-opening polymerization of epoxides which have been studied in some detail and which proceed rapidly and exothermically at room temperature. A number of mechanistic studies have been conducted and the best current evidence suggests that polymerization proceeds by a cationic mechanism. Evidence is also presented which suggests that platinum metal colloids may function as the active initiating species.
引用
收藏
页码:1853 / 1863
页数:11
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