Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1991008193) PROCESS FOR AFTERTREATMENT OF AMPHOTERIC OR ZWITTERIONIC SURFACE-ACTIVE AGENTS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008193 International Application No.: PCT/EP1990/001975
Publication Date: 13.06.1991 International Filing Date: 19.11.1990
Chapter 2 Demand Filed: 18.04.1991
IPC:
C07C 227/40 (2006.01) ,C07C 231/24 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
227
Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
38
Separation; Purification; Stabilisation; Use of additives
40
Separation; Purification
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
231
Preparation of carboxylic acid amides
22
Separation; Purification; Stabilisation; Use of additives
24
Separation; Purification
Applicants:
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN [DE/DE]; D-40191 Düsseldorf, DE (AllExceptUS)
UPHUES, Günter [DE/DE]; DE (UsOnly)
PLOOG, Uwe [DE/DE]; DE (UsOnly)
BISCHOF, Klaudia [DE/DE]; DE (UsOnly)
KENAR, Kenan [DE/DE]; DE (UsOnly)
SLADEK, Pavel [DE/DE]; DE (UsOnly)
Inventors:
UPHUES, Günter; DE
PLOOG, Uwe; DE
BISCHOF, Klaudia; DE
KENAR, Kenan; DE
SLADEK, Pavel; DE
Common
Representative:
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN; TFP-Patentabteilung D-40191 Düsseldorf, DE
Priority Data:
P 39 39 264.328.11.1989DE
Title (DE) VERFAHREN ZUR NACHBEHANDLUNG AMPHOTERER ODER ZWITTERIONISCHER TENSIDE
(EN) PROCESS FOR AFTERTREATMENT OF AMPHOTERIC OR ZWITTERIONIC SURFACE-ACTIVE AGENTS
(FR) PROCEDE POUR LE RETRAITEMENT D'AGENTS TENSIO-ACTIFS AMPHOTERES OU ZWITTERIONIQUES
Abstract:
(DE) Der Restgehalt an freiem Alkylierungsmittel in wässrigen Lösungen amphoterer oder zwitterionischer Tenside läßt sich durch Nachbehandlung mit Ammoniak, einer Aminosäure mit 2 bis 8 Kohlenstoffatomen oder einem Oligopeptid deutlich herabsetzen.
(EN) The residual content of free alkylating agent in aqueous solutions of amphoteric or zwitterionic surface-active agents can be significantly lowered by treatment with ammonia, an amino with 2-8 carbon atoms or an oligopeptide.
(FR) Un retraitement avec de l'ammoniac, un acide aminé comportant 2 à 8 atomes de carbone ou un oligopeptide permet de réduire sensiblement la teneur résiduelle en produits d'alkylation libres dans les solutions aqueuses d'agents tensio-actifs amphotères ou zwitterrioniques.
Designated States: AU, BR, CA, FI, JP, KR, NO, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
FI922391NO19921993ES2067052EP0502916US5281749JPH05501559
CA2069938KR1019927003514AU1990067594DK0502916