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:
Feb. 24, 1981
Filed:
Sep. 29, 1978
Applicant:
Inventor:
Kyung S Shim, Irvington, NY (US);
Assignee:
Stauffer Chemical Company, Westport, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07R / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
Phenyl phosphonous dihalide is oxidized according to the following reaction: ##STR1## wherein X is Cl or Br. The reaction is conducted at a temperature from about 0.degree. C. to about 200.degree. C. Charcoal is added to the reaction mixture when impure phenyl phosphonous dihalide is used as a starting material. The product has high purity and is stable at high temperatures. It can be used as an intermediate to prepare flame retardants, insecticides, pesticides and plasticisers.