发明名称 |
Ladder-like silicone polymers |
摘要 |
There is disclosed a three stage method for the preparation of ladder-like silicone polymers. The first stage comprises hydrolysis and polymerization of alkyltrialkoxylsilane-like monomers to give relatively low molecular weight prepolymers. The second stage comprises dehydrated condensation polymerization of the prepolymers to give high molecular weight polymers. The third stage comprises partial blocking of a proportion of the pendant Si-OH (silanol) groups with a pre-determined sub-stoichiometric amount of a blocking agent. Also disclosed are the prepolymers, polymers and partially blocked polymers so produced.
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申请公布号 |
US2003212228(A1) |
申请公布日期 |
2003.11.13 |
申请号 |
US20020268540 |
申请日期 |
2002.10.09 |
申请人 |
DSO NATIONAL LABORATORIES |
发明人 |
DAI JIE;DENG CHAORAN |
分类号 |
C08G77/04;C08G77/06;C08G77/38;(IPC1-7):C08G77/00 |
主分类号 |
C08G77/04 |
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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