发明名称 |
Process for producing high-purity chlorophosphite |
摘要 |
There is provided a process capable of preventing the adhesion of a catalyst to an evaporator in a step of separating a chlorophosphite as a target substance from a reaction liquid by evaporation. The process includes a first step of allowing phosphorus trichloride and a phosphorous acid triester represented by (RO)3P to react in the presence of a catalyst having a viscosity at 80° C. of 100 mPa·s or lower to produce a chlorophosphite represented by RO(R′)PCl, and a second step of vaporizing a reaction liquid containing the chlorophosphite obtained in the first step, in a short time, to separate the catalyst.
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申请公布号 |
US8357822(B2) |
申请公布日期 |
2013.01.22 |
申请号 |
US20080745109 |
申请日期 |
2008.12.05 |
申请人 |
NIPPON CHEMICAL INDUSTRIAL CO., LTD.;SASAKI KENTARO;TSUNASHIMA KATSUHIKO;SAITO TADASHI;HARA YOSHIFUSA |
发明人 |
SASAKI KENTARO;TSUNASHIMA KATSUHIKO;SAITO TADASHI;HARA YOSHIFUSA |
分类号 |
C07F9/02 |
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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