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Patent Searching and Data


Title:
PRODUCTION OF AMINE OXIDE AQUEOUS SOLUTION
Document Type and Number:
Japanese Patent JPH08157443
Kind Code:
A
Abstract:

PURPOSE: To industrially advantageously obtain the subject aqueous solution useful as a surfactant having least skin irritation at a high yield in a short time by reacting a specific tertiary amine with a hydrogen peroxide solution in the presence of a specific tungsten compound.

CONSTITUTION: (A) A compound expressed by formula I [R1 is an (un)saturated 8-22C (branched) aliphatic hydrocarbon group; R2 and R3 are each methyl or (hydroxy)ethyl] and (B) a hydrogen peroxide solution are reacted in the presence of (C) an acid containing tungsten in a molecule or a salt of the acid [e.g. (sodium or ammonium) phosphotungstate, silicotungstic acid or (ammonium) tungstate] to afford the object aqueous solution of the compound expressed by formula II. Preferably, the component A is adjusted to pH ≤7 in a solution dispersed or dissolved in water and its using amount is 0.01-5wt.% based on the component B, and the components A and B are mixed with water before reacting with the component C in obtaining the object aqueous solution.


Inventors:
Kawashima, Akiko
Wakui, Tsugio
Inagaki, Takeo
Application Number:
JP1994000331887
Publication Date:
June 18, 1996
Filing Date:
December 08, 1994
Export Citation:
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Assignee:
LION AKZO KK
International Classes:
A61K8/30; A61K8/41; A61Q5/02; B01J23/30; B01J27/188; B01J27/24; C07B61/00; C07C291/04; C11D1/75; (IPC1-7): C07C291/04; A61K7/00; B01J23/30; B01J27/188; B01J27/24
Attorney, Agent or Firm:
臼村 文男