Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PRODUCTION OF HIGH-PURITY TRANS-1,4- CYCLOHEXANEDICARBOXYLIC ACID DIALKYL
Document Type and Number:
Japanese Patent JP2000198760
Kind Code:
A
Abstract:

To obtain the subject compound by filtering an aqueous solution containing cis- and trans-cyclohexanedicarboxylic acid kept at an elevated temperature, and reacting the resultant trans-cyclohexanedicarboxylic acid with an alcohol.

This compound is obtained by filtering an aqueous solution containing cis- and trans-cyclohexanedicarboxylic acid kept at an elevated temperature, and reacting the resultant trans-cyclohexanedicarboxylic acid with alcohol. It is preferably obtained by hydrogenating terephthalic acid in water as the solvent in the presence of a palladium catalyst, separating the resultant reaction liquid from the catalyst, filtering the mixed solution of the cis and trans isomers (the trans compound preferably accounting for 30% or more of the total isomers) kept at an elevated temperature, to produce trans-1,4- cyclohexanedicarboxylic acid, esterifying the trans compound with an alcohol (preferably methyl alcohol).


Inventors:
HARA YOSHINORI
TAKAHASHI HIROKO
Application Number:
JP260199A
Publication Date:
July 18, 2000
Filing Date:
January 08, 1999
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI CHEM CORP
International Classes:
B01J23/44; C07B61/00; C07C51/36; C07C51/47; C07C61/09; C07C67/08; C07C69/75; (IPC1-7): C07C67/08; B01J23/44; C07C51/36; C07C51/47; C07C61/09; C07C69/75
Attorney, Agent or Firm:
Hasegawa Moji