发明名称 |
Process for the preparation of cyclic phosphites |
摘要 |
The present invention relates to a process for the preparation of pentaerythritol esters of phosphorous acid derivatives by reacting pentaerythritol with a phosphorous trihalide and a phenol in the presence of a quaternary salt or a polyether. The use of such catalysts is not only able to improve the yield, but also makes it possible for the entire process to be carried out in one step by adding the phenol at the start of the reaction of pentaerythritol with the phosphorous halide.
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申请公布号 |
US4692540(A) |
申请公布日期 |
1987.09.08 |
申请号 |
US19850723115 |
申请日期 |
1985.04.15 |
申请人 |
CIBA-GEIGY CORPORATION |
发明人 |
ILLY, HUGO;SCHLIEBS, BJOERN;HESS, WILHELM |
分类号 |
C07F9/146;C07F9/6574;(IPC1-7):C07F9/15 |
主分类号 |
C07F9/146 |
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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