发明名称 |
PREPARATION OF AROMATIC CYANATES |
摘要 |
A process for the preparation of an aromatic cyanate which comprises (a) preparing in situ a cyanogen chloride by contacting a solution of chlorine in a chlorinated hydrocarbon with an aqueous solution of an alkali metal cyanide at a temperature of 0 DEG C. or below under conditions such that a cyanogen chloride is prepared; (b) physically separating the chlorinated hydrocarbon in which the cyanogen chloride is dissolved from the aqueous layer in which an alkali metal chloride salt is dissolved; and (c) contacting the cyanogen chloride dissolved in the chlorinated hydrocarbon with a hydroxy-substituted aromatic compound dissolved in a chlorinated hydrocarbon, a secondary alcohol or a tertiary alcohol, in the presence of a tertiary amine at a temperature of about 0 DEG C. or less under conditions such that a polyaromatic cyanate is prepared. |
申请公布号 |
DE3480473(D1) |
申请公布日期 |
1989.12.21 |
申请号 |
DE19843480473 |
申请日期 |
1984.10.11 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
MURRAY, DANIEL J.;WOO, EDMUND P. |
分类号 |
C07D521/00;C07C67/00;C07C261/02;C07C313/00;C07C317/22;(IPC1-7):C07C122/00 |
主分类号 |
C07D521/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|