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. 18, 1983
Filed:
Aug. 18, 1980
Applicant:
Inventors:
Hermann Seifert, Cologne, DE;
Helmut Waldmann, Leverkusen, DE;
Rolf Wirthwein, Hanau, DE;
Willi Hofen, Rodenbach, DE;
Assignees:
Bayer Aktiengesellschaft, Leverkusen, DE;
Deutsche Gold und Silberscheideanstalt Vormals Roessler, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 58 ; 203 59 ; 203 63 ; 203 67 ; 203 69 ; 203 70 ;
Abstract
A process has been developed for the purification of expoxides containing carbonyl compounds as impurities wherein the carbonyl compound content is up to 2% by weight of epoxide. Purification is effected by treatment with compounds containing at least one NH.sub.2 group.