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. 03, 2021
Filed:
Dec. 03, 2018
Basf SE, Ludwigshafen am Rhein, DE;
Melanie Weingarten, Ludwigshafen am Rhein, DE;
Wolfgang Siegel, Ludwigshafen am Rhein, DE;
Ralf Pelzer, Lampertheim, DE;
Florian Garlichs, Lampertheim, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
The present invention relates to a method for preparing a dialkyi or dialkenyl ether of a cycloaliphatic or araliphatic diol, which comprises (i) reacting the cycloaliphatic or araliphatic diol with metallic sodium in an aprotic organic solvent in the presence of a catalytic amount of at least one monoether-monoalcohol of formula (I) wherein Y is identical or different and selected from C-C-alkylene, n is an integer in the range from 1 to 10, and Ris C-C-Alkyl, whereby the corresponding disodium dialcoholate is obtained, reacting the disodium dialcoholate obtained in step (i) with an alkylation alkenylation reagent.