Title:
【発明の名称】低含量の1,4ージオキサンを含有する硫酸化アルカノールオキシエチレートまたはアルキルフエノールオキシエチレートの製造方法
Document Type and Number:
Japanese Patent JP2550175
Kind Code:
B2
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.
Inventors:
RUUDORUFU AIGUNAA
GYUNTAA MYUURAA
RAINERU MYUURAA
HORUSUTO ROINERU
GYUNTAA MYUURAA
RAINERU MYUURAA
HORUSUTO ROINERU
Application Number:
JP2274389A
Publication Date:
November 06, 1996
Filing Date:
February 02, 1989
Export Citation:
Assignee:
HOECHST AG
International Classes:
C07C305/00; C07C303/24; C07C303/44; C07C305/04; C07C305/06; C07C305/10; C09K23/02; C07C305/18; C11D3/34; (IPC1-7): C07C305/10; C07C303/24
Attorney, Agent or Firm:
Mitsuyoshi Ezaki (1 person outside)