公开(公告)号：MY104925A

公开(公告)日：1994-07-30

申请号：MYPI19890117

申请日：1989-01-31

Applicant: HOECHST AG

Inventor： RUDOLF AIGNER ,  DR GUNTHER MULLER ,  RAINER MULLER ,  HORST REUNER

IPC: C07C305/00 ,  C07C303/24 ,  C07C303/44 ,  C07C305/04 ,  C07C305/06 ,  C07C305/10 ,  C07C305/18 ,  C09K23/02 ,  C11D3/34

Abstract: A PROCESS FOR THE PREPARATION OF SULFATED ALKANOL OXETHYLATES OR ALKYLPHENOL OXETHYLATES IS DESCRIBED. AFTER COMPLETION OF THE REACTION WITH SO3, 0.1 TO 0.5% BY WEIGHT, RELATIVE TO THE ALKANOL OXETHYLATES OR ALKYLPHENOL OXETHYLATES EMPLOYED, OF AT LEAST ONE OF THE FOLLOWING COMPOUNDS: WATER, ETANOL, 1- PROPANOL, 2- PROPANOL OR N-HEPTANE ARE ADMIXED TO THE REACTION MIXTURE AND LIQUID AND GAS ARE SUBSEQUENTLY SEPARATED AT A TEMPERATURE OF 20 TO 60?C . THE LIQUID IS THEN NEUTRALIZED WITH AQUEOUS ALKALI AS CUSTOMORY AND LEADS TO ETHER SULFATE/WATER MIXTURES WITH CONSIDERABLY REDUCED CONTENS OF 1,4-DIOXANE WHICH CAN EITHER BE USED WITHOUT FURTHER AFTERTREATMENT OR WITH A CONSIDERABLY REDUCED OUTLAY IN TERMS OF AFTERTREATMENT AS PERSONAL HYGIENE AGENTS AND FOR VARIOUS OTHER PURPOSES.

公开(公告)号：ZA8900782B

公开(公告)日：1989-09-27

申请号：ZA8900782

申请日：1989-02-01

Applicant: HOECHST AG

Inventor： AIGNER RUDOLF ,  RUDOLF AIGNER ,  REUNER HORST ,  HORST REUNER ,  MUELLER GUENTHER ,  GUENTHER MUELLER ,  MUELLER RAINER ,  RAINER MUELLER

IPC: C07C305/00 ,  B01F17/02 ,  C07C303/24 ,  C07C305/10 ,  C07C305/18 ,  C11D3/34 ,  C07C ,  B01F ,  C11D

CPC classification number: C07C303/24 ,  C07C305/18 ,  C07C305/10

公开(公告)号：ZA89782B

公开(公告)日：1989-09-27

申请号：ZA89782

申请日：1989-02-01

Applicant: HOECHST AG

Inventor： AIGNER RUDOLF ,  RUDOLF AIGNER ,  REUNER HORST ,  HORST REUNER ,  MUELLER GUENTHER ,  GUENTHER MUELLER ,  MUELLER RAINER ,  RAINER MUELLER

IPC: C07C303/24 ,  C07C303/44 ,  C07C305/04 ,  C07C305/00 ,  C07C305/06 ,  C07C305/10 ,  C07C305/18 ,  C09K23/02 ,  C11D3/34 ,  C07C ,  C11D ,  B01F

Abstract: A process for the preparation of sulfated alkanol oxethylates or alkylphenol oxethylates is described. After completion of the reaction with SO3, 0.1 to 0.5% by weight, relative to the alkanol oxethylates or alkylphenol oxethylates employed, of at least one of the following compounds: water, ethanol, 1-propanol, 2-propanol or n-heptane are admixed to the reaction mixture and liquid and gas are subsequently separated at a temperature of 20 DEG to 60 DEG C. The liquid is then neutralized with aqueous alkali as customary and leads to ether sulfate/water mixtures with considerably reduced contents of 1,4-dioxane which can either be used without further aftertreatment or with a considerably reduced outlay in terms of aftertreatment as personal hygiene agents and for various other purposes.