发明名称 |
Preparation of organopolysiloxane gum |
摘要 |
<p>An organopolysiloxane gum is continuously prepared by (I) mixing at least one cyclopolysiloxane with an end capping agent, (II) feeding the mixture to a self-cleaning reactor along with an alkaline polymerization catalyst, and effecting polymerization at a temperature of 100 to 250 DEG C and under subatmospheric pressure, (III) continuously adding a neutralizing agent to the reaction mixture of step (II), thereby terminating the polymerization reaction, and (IV) continuously removing the cyclopolysiloxane and volatile components from the reaction mixture. <IMAGE></p> |
申请公布号 |
EP1006139(A1) |
申请公布日期 |
2000.06.07 |
申请号 |
EP19990309688 |
申请日期 |
1999.12.02 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
TAKAHASHI, MASAHARU;HAGIWARA, YUTAKA |
分类号 |
C08G77/06;C08G77/20;C08G77/32;(IPC1-7):C08G77/06;C08G77/10;C08G77/08 |
主分类号 |
C08G77/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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