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:
Oct. 30, 1990
Filed:
Mar. 31, 1989
Applicant:
Inventors:
Karl Schmid, Mettmann, DE;
Alfred Meffert, Monheim, DE;
Klaus Friedrich, Duesseldorf, DE;
Michael Langen, Hilden, DE;
Klaus Herrmann, Monheim, DE;
Assignee:
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf-Holthausen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568621 ; 518618 ; 518608 ;
Abstract
A process for the production of alcohol polyglycol ethers by reaction of an alcohol with ethylene oxide and/or propylene oxide wherein a basic alkali metal compound catalyst is employed in at least 0.5% by weight, expressed as sodium methylate, and based on the total weight of the reactants. The reaction mixture is neutralized in the presence of a filter aid.