SILICONE RUBBERS .9. CONTRIBUTIONS TO POLYDIMETHYLSILOXANE-ALPHA,OMEGA-DIOLS SYNTHESIS BY HETEROGENEOUS CATALYSIS

被引:40
作者
CAZACU, M
MARCU, M
机构
[1] “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica-Vodá 41 A, 6600 Iaşi, România
来源
JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY | 1995年 / A32卷
关键词
D O I
10.1080/10601329508019142
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The cationic polymerization of a cyclosiloxane mixture (hexamethyl-cyclotrisiloxane-D-3, octamethylcyclotetrasiloxane-D-4, decamethylcyclopentasiloxane-D-5, dodecamethylcyclohexasiloxane-D-6 and tetradecamethylcycloheptasiloxane-D-7) in the presence of water as adjusting-control agent for molecular weight is studied in heterogeneous catalyst system using an ion-exchange VIONIT CS-34C with sulphonic groups. Thus poly(dimethylsiloxane)-alpha,omega-diols for room temperature vulcanization (RTV) silicone rubbers, were obtained.
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页码:1019 / 1029
页数:11
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