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:
Jul. 12, 1983
Filed:
May. 18, 1981
Applicant:
Inventors:
Hans-Georg Zengel, Kleinwallstadt, DE;
Manfred Bergfeld, Erlenbach, DE;
Assignee:
Akzo NV, Arnhem, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564255 ;
Abstract
Blocked isocyanates of the general formula ##STR1## are obtained by converting terephthalic dialdoxime, isophthalic dialdoxime or an aliphatic, cycloaliphatic or aromatic ketoxime or an aromatic aldoxime of the general formula ##STR2## in the presence of 10-100 Mol % sodium, potassium or calcium hydroxide, with the sodium, potassium or calcium salt of a bis-N-chloramide of the general formula