The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 1980
Filed:
Jul. 11, 1978
Applicant:
Inventors:
Assignee:
Asahi Kasei Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562590 ; 204 / ; 204 72 ; 204 79 ; 560191 ; 560204 ; 562593 ;
Abstract
Sebacic acid is produced from adipic acid by half esterifying adipic acid with methanol to produce monomethyl adipate, carrying out electrolytic condensation of the monomethyl adipate in a methanol solution containing an alkali metal salt of the monomethyl adipate to give an electrolytic solution containing dimethyl sebacate, treating the electrolytic solution by a combination of water treatment and anion exchange treatment or a combination of cation exchange treatment and anion exchange treatment to remove the monomethyl adipate and its alkali metal salt from the electrolytic solution, separating the dimethyl sebacate, and hydrolyzing the dimethyl sebacate to give sebacic acid.