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:
Aug. 30, 1994
Filed:
Mar. 17, 1993
Applicant:
Inventors:
Wolfgang H Mueller, Marl, DE;
Manfred Hartmann, Marl, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11B / ;
U.S. Cl.
CPC ...
554206 ; 554175 ; 554213 ; 562517 ; 562521 ; 252D / ;
Abstract
In a process for the production of tertiary carboxylic acids, especially by 'Koch synthesis', the byproducts, e.g., a dimer of tripropene, are removed from the reaction mixture by azeotropic rectification with alkanediols, e.g., 1,3-butanediol, as entrainers, thus obtaining the tertiary carboxylic acids in pure form.