Title:
PURIFICATION OF 1,12-DODECANEDIOIC ACID
Document Type and Number:
Japanese Patent JPS55104226
Kind Code:
A
Abstract:
PURPOSE: To prepare the highly pure title compound useful as a raw material of synthetic high polymers such as polyesters, by heating the crude title compound obtained by the hydrolysis of 11-cyanoundecanoic acid ammonium salt, in the presence of a specific alkali compound.
CONSTITUTION: A crude 1,12-dodecanedioic acid obtained by the hydrolysis of 11-cyanoundecanoic acid ammonium slat with an alkali hydroxide, is heated at 100W150°C, pref. 115W130°C, in the presence of 0.01W5pts.wt. pref. 0.1W1 parts, based on 100 parts of the dioic acid, of ethylenediaminetetraacetic acid alkali salt (pref. sodium or potassium salt) to obtain the purified title product.
Inventors:
YAMANE HIDETO
KUMAKAHA KIYOSHI
MIYAZAKI HARUHIKO
KUNIYASU KENJI
KUMAKAHA KIYOSHI
MIYAZAKI HARUHIKO
KUNIYASU KENJI
Application Number:
JP1040679A
Publication Date:
August 09, 1980
Filing Date:
February 02, 1979
Export Citation:
Assignee:
UBE INDUSTRIES
International Classes:
C07C55/21; C07C51/00; C07C51/487; C07C67/00; (IPC1-7): C07C51/487; C07C55/21