ANIONIC RING-OPENING POLYMERIZATION OF CYCLOTETRASILOXANES WITH LARGE SUBSTITUENTS

被引：4

作者：

FISH, D ^{[1
]}

KHAN, IM ^{[1
]}

SMID, J ^{[1
]}

机构：

[1] SUNY SYRACUSE,COLL ENVIRONM SCI & FORESTRY,FAC CHEM,POLYMER RES INST,SYRACUSE,NY 13210

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1990年 / 32卷

关键词：

D O I：

10.1002/masy.19900320119

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Cyclotetrasiloxanes with large substituents were synthesized by hydrosilylation of 1,3,5,7‐tetramethylcyclotetrasiloxane with CH2=CHCH2X, X being (CH2)2CH3, O(CH2CH2O)3CH3, OCH2epoxy and OCH2‐ benzo‐18‐crown‐6. The tetrasubstituted cycles were homo‐polymerized or copolymerized with octamethylcyclotetrasiloxane in the presence of potassium silanolate to yield polysiloxanes with side chains containing oxirane rings, crown ethers or oxyethylene ligands. In addition to a complex mixture of cycles, about 50 to 80% polymer can be recovered. The copolymer generally contains less of the substituted monomer than the starting monomer feed, but the bulky substituents do not appear to prevent formation of homo‐ or copolymer. Copyright © 1990 Hüthig & Wepf Verlag

引用

页码：241 / 253

页数：13

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