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. 21, 1988
Filed:
Jul. 03, 1986
Charles G Chavdarian, Martinez, CA (US);
Lydia L Chang, Orinda, CA (US);
Bruce C Onisko, Albany, CA (US);
Jonathan P Earhart, Orinda, CA (US);
Stauffer Chemical Company, Westport, CT (US);
Abstract
Compounds having the formula ##STR1## in which R is methyl or ethyl, Y is sulfur or oxygen, and R.sub.1 and R.sub.2 are the same or different tertiary alkyl groups each having from 4 to 6 carbon atoms, are insecticides and nematicides, especially for control of soil insects and nematodes. Symmetrical compounds (R.sub.1 .dbd.R.sub.2) may be prepared by reaction of an alkali metal mercaptide with an alkyl (thio) phosphonic dihalide. The alkali metal mercaptide may be prepared by reaction of a tertiary alkyl mercaptan with an alkali metal or alkali metal hydride.