发明名称 |
Process for preparing organopolysiloxane gum |
摘要 |
A siloxane gum is prepared by adding a silane or siloxane having two hydrolyzable groups in a molecule to a silanol-terminated organopolysiloxane in such an amount to give a molar ratio of silanol group/hydrolyzable group of from 0.5 to 3 and effecting condensation polymerization. The resulting organopoly-siloxane has a degree of polymerization of higher than 1,000 and a minimized content of low-molecular weight cyclic siloxanes of less than 5,000 ppm.
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申请公布号 |
US5468830(A) |
申请公布日期 |
1995.11.21 |
申请号 |
US19940189333 |
申请日期 |
1994.01.31 |
申请人 |
SHIN-ETSU CHEMICAL CO. LTD. |
发明人 |
INOUE, YOSHIO;SEKIGUCHI, SUSUMU;IGARASHI, MINORU |
分类号 |
C08G77/06;C08L83/04;(IPC1-7):C08G77/04 |
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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