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:
Jul. 01, 2014
Filed:
Jun. 12, 2007
Yuehui Zhou, Toronto, CA;
Jeffrey Charles Henry Dyck, Saint Catharines, CA;
Boban Jakovljevic, Niagara Falls, CA;
Cyril Christian Henri Bourget, Niagara Falls, CA;
Allan James Robertson, Thorold, CA;
Donato Nucciarone, Stoney Creek, CA;
Yuehui Zhou, Toronto, CA;
Jeffrey Charles Henry Dyck, Saint Catharines, CA;
Boban Jakovljevic, Niagara Falls, CA;
Cyril Christian Henri Bourget, Niagara Falls, CA;
Allan James Robertson, Thorold, CA;
Donato Nucciarone, Stoney Creek, CA;
Cytec Canada Inc., Niagara Falls, Ontario, CA;
Abstract
The present invention provides phosphinic acids and their sulfur derivatives, in accordance with the following formula (I): wherein Rand Rare different and each of Rand Ris independently selected from an organic radical that branches at the alpha carbon and an organic radical that branches at the beta carbon, and each of X and Y is independently O or S, and wherein said compound is a liquid at room temperature. Compounds of formula (I) find utility for example as metal extractants. Also provided are methods for making compounds of formula (I) and their corresponding phosphine intermediates.