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:
Jul. 23, 1991
Filed:
Sep. 25, 1989
Applicant:
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585641 ; 585642 ;
Abstract
In a process for the production of 2,3-dimethylbutenes by the dehydrochlorination of 1-chloro-3,3-dimethylbutane in the presence of a catalyst, a conversion of the starting material and selectivity of the desired product can be improved when at least one compound selected from the group consisting of magnesium compounds, calcium compounds and lanthanum compounds is used as the catalyst.