发明名称 |
Aqueous resol solutions and preparation thereof |
摘要 |
An aqueous resol solution produced by an alkaline condensation of a phenolic compound with an aldehyde in a molar ratio of 1:1.5 to 2.5 with an alkali metal content of 1 to 5.0% by weight of the reaction solution, neutralizing the solution after the end of condensation at least partially with an aromatic hydroxy carboxylic acid at a temperature not greater than 50 DEG C. and then concentrating the reaction mixture which is readily dilutable with water.
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申请公布号 |
US5345001(A) |
申请公布日期 |
1994.09.06 |
申请号 |
US19930110574 |
申请日期 |
1993.08.23 |
申请人 |
RUTGERSWERKE AKTIENGESELLSCHAFT AG |
发明人 |
SCHROTER, STEPHAN;HANSEN, ACHIM;GARDZIELLA, ARNO;ADOLPHS, PETER |
分类号 |
B24D3/28;C08G8/10;C08G14/08;C09D161/06;(IPC1-7):C07C39/12;C07C37/20 |
主分类号 |
B24D3/28 |
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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