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:
Jun. 26, 2001
Filed:
Jun. 21, 1999
Applicant:
Inventors:
Jacqueline M. Applegate, Leverkusen-Steinbuchel, DE;
Peter E. Newallis, Leawood, KS (US);
Vidyanatha A. Prasad, Leawood, KS (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 2/510 ;
U.S. Cl.
CPC ...
C01B 2/510 ;
Abstract
The present invention relates to an improved process for the preparation of thiophosphoryl chloride which is useful as an intermediate for the synthesis of insecticidally active compounds. The improvement comprises the presence in the reaction mixture of a catalytic amount of a nitroxide free radical of the following general formula: