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:
Dec. 27, 1977
Filed:
Jun. 14, 1976
David William Reger, Trenton, NJ (US);
Murray Garber, Lawrenceville, NJ (US);
Don Wesley Long, Lawrenceville, NJ (US);
American Cyanamid Company, Stamford, CT (US);
Abstract
There is provided a fully integrated process for preparing a 2-dialkoxyphosphinylimino-1,3-dithietane in good overall yields with considerable savings in materials, time and labor involving a plurality of steps comprising the overall reaction of a dialkoxyphosphoryl chloride and an alkali metal- or ammonium thiocyanate to obtain a dialkoxyphosphinyl isothiocyanate, reacting the latter with 1.1 to 1.2 molar equivalents of an alkali mercaptan in the presence of a water and, finally, reacting resultant dialkoxyphosphinyldithiocarbamate with methylene bromide or methylene iodide in the presence or absence of a non-ionic surfactant under controlled pH conditions ranging from 5 to 8 to obtain resultant 2-dialkoxyphosphinylimino-1,3-dithietane. The latter finds utility for the control of root-knot nematode.