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Patent Searching and Data


Title:
PREPARATION OF AMINE OXIDE
Document Type and Number:
Japanese Patent JPH02131459
Kind Code:
A
Abstract:

PURPOSE: To obtain an amine oxide with a low nitrosamine content by reacting a tertiary amine with aqueous hydrogen peroxide in the presence of titanium metal.

CONSTITUTION: A tertiary amine is reacted with aqueous hydrogen peroxide while in contact with titanium metal at a temperature of 10-100°C for 1-24 hours to give the objective product. Addition of carbon dioxide to the reaction mixture gives an amine oxide which has a lower content of nitrosamine or is substantially nitrosamine-free. The amount of hydrogen peroxide employed is 1-5 moles per mole of the tertiary amine. Titanium metal is employed in such an amount that the titanium surface of 5-500 cm2 per liter of reaction liquid volume is given and carbon dioxide is employed in an amount from 0.005 wt.% up to the solubility limit in the tertiary amine.


Inventors:
KASURIIN SUUZAN ROORENZO
Application Number:
JP21874289A
Publication Date:
May 21, 1990
Filing Date:
August 28, 1989
Export Citation:
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Assignee:
ETHYL CORP
International Classes:
B01J21/06; C07B61/00; C07C291/04; (IPC1-7): B01J21/06; C07B61/00
Attorney, Agent or Firm:
Heikichi Odashima