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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.:

US 4423220 B1

PDFFull Text
Date of Patent:
Dec. 27, 1983

Filed:

Nov. 26, 1979

Process for the production of o,o-dialkylphosphorodithioates

Applicant:
Inventors:

Jean-Pierre Ledouble, St. Louis, FR;

Markus Tschopp, Liestal, CH;

Assignee:

Ciba-Geigy Corporation, Ardsley, NY (US);

Attorneys:

Jorda; Karl F.

Collins; Bruce M.

Primary Examiner:

Richard A Schwartz

Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
546 22 ;
Abstract

A new process for the production of O,O-dialkylphosphorodithioates of the formula ##STR1## wherein R represents methyl or ethyl, and R.sub.1 and R.sub.2 are identical or different, and each represent an alkyl, alkenyl or alkoxyalkyl group having in each case at most 5 carbon atoms is disclosed. The process comprises reacting an essentially equimolar mixture of a piperidine of the formula ##STR2## and a free O,O-dialkyldithiophosphoric acid of the formula ##STR3## or a sodium, potassium or ammonium salt thereof, in the presence of an acid binding agent, with chloroacetylchloride.

Find Patent Forward Citations

Ledouble, Jean-Pierre. (1983). Process for the production of o,o-dialkylphosphorodithioates (U.S. Patent No. 4423220). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4423220

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