| 发明名称 |
PROCESS FOR PREPARING FLUID, STORAGE-STABLE AMPHOLYTIC SURFACE-ACTIVE AGENTS |
| 摘要 |
<p>In order to prepare fluid, storage-stable ampholytic surface-active agents, (a) 1-hydroxyethyl-2-alkyl-2-imidazolines having formula (1), in which R1 stands for an alkyl residue with 5 to 21 carbon atoms, are quaternated or carboxymethylated with halogenated carboxylic acid salts at a pH range from 7.5 to 9, and at the same time hydrolyzed with aqueous bases, then (b) the pH value of the reaction final products is set between 5 and 7. <IMAGE> (I)</p> |
| 申请公布号 |
EP0670830(B1) |
申请公布日期 |
2001.06.27 |
| 申请号 |
EP19940901844 |
申请日期 |
1993.11.22 |
| 申请人 |
COGNIS DEUTSCHLAND GMBH |
发明人 |
UPHUES, GUENTER;PLOOG, UWE;SCHICK, RENATE;SCHWARK, HANS-JUERGEN;WITT, SANDRA |
| 分类号 |
C07D233/14;B01F17/00;B01F17/28;C07C231/10;C07C233/36;C07D233/60;C11D1/88;(IPC1-7):C07D233/14 |
主分类号 |
C07D233/14 |
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