Process for the preparation of sulfated alkanol oxethylates or a

Details Process for the preparation of sulfated alkanol oxethylates or a Process for the preparation of sulfated alkanol oxethylates or a

1989-02-01

1990-09-04

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfate esters

558 33, 558 34, C07C14102, C07C14116

Patent

active

049546465

ABSTRACT:
A process for the preparation of sulfated alkanol oxethylates or alkylphenol oxethylates is described. After completion of the reaction with SO.sub.3, 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.degree. to 60.degree. 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.

REFERENCES:
patent: 4285881 (1981-08-01), Yang
patent: 4411815 (1983-10-01), Ando et al.
Derwent Abstract of EP 0052801 (6-1982).
Kociba et al., Toxicol. and Appl. Pharmacol., 30, 275-286 (1974).

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