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:
Sep. 07, 1999
Filed:
Sep. 11, 1997
Applicant:
Inventors:
David M Mayes, Overland Park, KS (US);
Daniel M Wasleski, Raytown, MO (US);
Gerd Grah, Haan, DE;
Hermann Seifert, Bergisch Gladbach, DE;
Assignees:
Bayer Corporation, Pittsburgh, PA (US);
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
558 90 ; 558 92 ; 558 99 ; 558100 ;
Abstract
The invention relates to process for the preparation of an O-alkyl, O-alkyl phosphorochloridothioate by 1) reacting A) a thiophosphoryl halide with B) an alcohol, in the presence of C) a tertiary amine acid acceptor and D) a solvent, and 2) reacting the resultant product with a second alcohol, different from the alcohol used in step 1). In the preferred embodiment, the intermediate product is not isolated before reaction with the second alcohol.