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:
Mar. 31, 1981
Filed:
Jul. 26, 1978
Applicant:
Inventors:
Hans-Georg Zengel, Kleinwallstadt, DE;
Manfred Bergfeld, Erlenbach am Main, DE;
Assignee:
Akzona Incorporated, Asheville, NC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
Novel Bis-N-chloramides of aromatic dicarboxylic acids, such as alkyl-isophthalic or alkyl terephthalic acid, or of cycloaliphatic dicarboxylic acids such as cyclohexane dicarboxylic acid, are obtained by chlorinating the corresponding diamides, in an aqueous acid medium at a temperature of about 0.degree. to 40.degree. C.