发明名称 |
Process for preparing condensed polyalkoxyphosphazene |
摘要 |
A process for preparing a condensed polyalkoxyphosphazene by reacting a halophosphazene oligomer with an alcohol in the presence of an alkali metal carbonate to produce a condensed partially alkoxy-substituted phosphazene, removing water produced in the reaction from the reaction mixture, and reacting the condensed partially alkoxy-substituted phosphazene with an alkali metal alkoxide. The condensed polyalkoxyphosphazene having desired average molecular weight and viscosity and an excellent stability can be easily prepared in a high yield in a low cost.
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申请公布号 |
US4451410(A) |
申请公布日期 |
1984.05.29 |
申请号 |
US19820413686 |
申请日期 |
1982.09.01 |
申请人 |
OTSUKA CHEMICAL CO., LTD. |
发明人 |
SHIBUTA, OSAMU;HASEGAWA, TETUO;OGAWA, JUN |
分类号 |
C07F9/02;C07F9/24;C07F9/6581;C07F9/6593;C08G79/02;(IPC1-7):C07F9/40 |
主分类号 |
C07F9/02 |
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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