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. 22, 1983
Filed:
May. 14, 1981
Applicant:
Inventor:
Allan J Robertson, Niagara, CA;
Assignee:
American Cyanamid Company, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
2605 / ; 75119 ; 210634 ; 210912 ; 423139 ;
Abstract
Free radical addition of two moles of 2,4,4'-trimethylpentene-1 to 2,4,4'-trimethylpentylphosphine followed by the oxidation of the 2,4,4'-trimethylpentylphosphine with two moles of hydrogen peroxide is employed to prepare 2,4,4'-trimethylpentylphosphinic acid. The 2,4,4'-trimethylpentylphosphinic acid is useful as a cobalt extractant.