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:
Feb. 07, 1984
Filed:
Mar. 11, 1982
Applicant:
Inventors:
Rainer Engels, Amsterdam, NL;
Jan H Meurs, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2604 / ; 204 / ; 560 24 ; 560 25 ; 560 27 ; 560 29 ; 560 30 ; 560 31 ; 560 32 ; 560157 ; 564 32 ; 564 48 ; 564 52 ; 564 53 ; 564218 ;
Abstract
Isocyanates and derivatives thereof are prepared by oxidative conversion of compounds having at least one group ##STR1## wherein X represents OY or ##STR2## wherein Y is H, a metal ion or group NR.sup.3 R.sup.4 R.sup.5 R.sup.6 wherein each of R.sup.3, R.sup.4, R.sup.5 and R.sup.6 which may be the same or different, is H, alkyl or (substituted) (alk)aryl and Z is a (substituted) alkyl or aryl group. Phenyl isocyanate and derivatives thereof are preferably prepared electrochemically from the corresponding oxamides and oxanilides.