CYCLOPOLYMERIZATION OF DIETHYL DIPROPARGYLMALONATE BY TRANSITION-METAL CATALYSTS

被引:81
作者
RYOO, MS [1 ]
LEE, WC [1 ]
CHOI, SK [1 ]
机构
[1] KOREA ADV INST SCI & TECHNOL,DEPT CHEM,POB 150,SEOUL 131,SOUTH KOREA
关键词
D O I
10.1021/ma00214a001
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Diethyl dipropargylmalonate was polymerized by MoCI5- and WCl6-based catalysts to give a new, high molecular weight polymer. A MoCl5-based catalyst was found to be a particularly effective catalyst for cyclopolymerization of diethyl dipropargylmalonate. The number average molecular weight of the resulting polymer was in the range of 76000–127000. The effects of catalysts and solvents on polymerization were also studied. The IR, NMR, and UV–visible spectra of poly(diethyl dipropargylmalonate) supported the idea that the resulting polymer possesses polyene structure having a cyclic recurring unit in the polymer backbone. Poly(diethyl dipropargylmalonate) is a black, soluble, and thermally stable solid. © 1990, American Chemical Society. All rights reserved.
引用
收藏
页码:3029 / 3031
页数:3
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