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:
Jan. 23, 1979
Filed:
Aug. 01, 1977
Applicant:
Inventors:
Helmut Zinke-Allmang, Bad Durkheim, DE;
Walter Scheidmeir, Limburgerhof, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568591 ; 2603 / ; 2603407 ; 568592 ; 568594 ;
Abstract
Dialkyl-ketals are manufactured by reacting ketones with alkanols in the presence of an acid condensing agent and of an at least equivalent amount, based on the ketone, of anhydrous calcium sulfate.