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:
May. 18, 1982
Filed:
Feb. 04, 1981
Applicant:
Inventors:
Otto Hertel, Ludwigshafen, DE;
Karl-Heinz Beyer, Frankenthal, DE;
Albrecht H Wallis, Ludwigshafen, DE;
Klaus Wulz, Ludwigshafen, DE;
Kamuran Izi, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract
A process for the preparation of an aminoalkyl half-ester of sulfuric acid by simultaneously adding an aminoalkanol and sulfuric acid to a suspending medium, boiling at 70.degree.-150.degree. C., with vigorous mixing, distilling off the water formed during the reaction, and any water introduced with the starting materials, together with a part of the suspending medium, as an azeotrope, separating off the water from the condensed azeotrope and recycling the suspending medium, as a gas, to the reaction mixture.