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:
Jan. 27, 1976
Filed:
Jan. 02, 1974
Jeffrey D Eng, North Vancouver, CA;
Cyril J Harke, Burnaby, CA;
Hooker Chemicals & Plastics Corporation, Niagara Falls, NY (US);
Abstract
A cation-active permselective membrane of a hydrolyzed copolymer of a perfluorinated olefin and a fluorosulfonated perfluorovinyl ether, a modification thereof, or sulfostyrenated perfluorinated ethylene propylene copolymer is employed to dialytically pass metal hydroxide from an aqueous solution thereof containing metal halide halates, thereby purifying the metal hydroxide of the metal halide. The named cation-active permselective membrane materials resist deterioration by the halates, hydroxide and halide components of the solution being purified. The invention also includes a dialysis cell for effecting the purification.