发明名称 |
Method for preparing bischloroformate compositions. |
摘要 |
<p>Bischloroformate compositions are prepared by passing gaseous phosgene into an agitated aqueous solution of a di-(alkali metal) salt of an organic dihydroxy compound such as bisphenol A, while maintaining said solution at a temperature within the range of about 0-50°C. Phosgene passage and agitation are continued until the bischloroformate composition has precipitated. The reaction is typically complete when the pH of the aqueous phase drops below 7. </p> |
申请公布号 |
EP0207292(A1) |
申请公布日期 |
1987.01.07 |
申请号 |
EP19860107287 |
申请日期 |
1986.05.28 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
SHANNON, THOMAS GERARD;BRUNELLE, DANIEL JOSEPH |
分类号 |
C07C68/02;C07C69/96;(IPC1-7):C07C68/02 |
主分类号 |
C07C68/02 |
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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