| 摘要 |
PCT No. PCT/EP91/00942 Sec. 371 Date Nov. 23, 1992 Sec. 102(e) Date Nov. 23, 1992 PCT Filed May 21, 1991 PCT Pub. No. WO91/18873 PCT Pub. Date Dec. 12, 1991.In the production of highly concentrated pastes of alpha -sulfofatty acid alkyl ester alkali metal salts by reaction of fatty acid alkyl esters with gaseous SO3, subsequent after-reaction in liquid phase and neutralization with aqueous alkali hydroxide solutions, the sulfonation product and aqueous alkali metal hydroxide solution are introduced during neutralization into an aqueous phase initially containing 0 to 55% by weight washing-active substance at a pH value in the range from 2 to 8 and washing-active substance contents of 60 to 70% by weight are established. |
| 申请人 |
HENKEL KGAA, 4000 DUESSELDORF, DE |
发明人 |
COLLIGNON, DIETMAR, 4000 DUESSELDORF, DE;DORRA, ERICH, 4006 ERKRATH, DE;PANTHEL, GUENTHER, DR., 5657 HAAN, DE;SCHMIDT, WOLFGANG, 4019 MONHEIM, DE;WREDE, NORBERT, 4000 DUESSELDORF, DE |
