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. 28, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventors:
Otto Ackermann, Troisdorf Sieglar, DE;
Dieter Bretzinger, Lohmer, DE;
Herbert Schneidewind, Troisdorf, DE;
Rudolf Stephan, Troisdorf, DE;
Assignee:
Dynamit Nobel AG, Troisdorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2604654 ; 2604656 ; 560174 ; 568391 ; 568413 ;
Abstract
An improvement in the alkoxylation of a compound having a reactive methylene group by contacting said compound with an orthoformic acid trialkyl ester in the presence of a catalyst, the improvement residing in employing at least 1.6 moles of orthoformic acid ester per mole of compound having a reactive methylene group and carrying out the process in the presence of a catalyst of the group of aliphatic carboxylic acids, anhydrides of aliphatic carboxylic acids, aromatic sulphonic acids, alkali metal alcoholates and alkanolamines.