发明名称 |
Method of preparing epoxy resins having low hydrolyzable chloride contents |
摘要 |
The hydrolyzable "chloride" contents of epoxides prepared from epihalohydrins and phenols, aromatic amines or >N-H group-containing heterocycles are considerably reduced by a second dehydrochlorination step which comprises dissolving the epoxide in a solvent having the characteristics of a 1:1 by weight blend of methylethylketone and toluene and treating it with amounts of base and water ensuring a final base concentration equivalent to that of about 4 wt. % aqueous NaOH.
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申请公布号 |
US4447598(A) |
申请公布日期 |
1984.05.08 |
申请号 |
US19830482760 |
申请日期 |
1983.04.07 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
CASKEY, TERRENCE L.;PARKER, THEODORE L.;MARTIN, PATRICK H. |
分类号 |
C07D301/27;C07D301/32;C07D303/24;C08G59/00;C08G59/02;C08G59/14;C08G59/18;(IPC1-7):C08G59/14 |
主分类号 |
C07D301/27 |
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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