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:
Sep. 26, 1989
Filed:
Dec. 23, 1988
Applicant:
Inventor:
George Kalfoglou, Houston, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
55 16 ; 55 38 ; 55 55 ;
Abstract
The invention is a method for lowering the oxygen content of an aqueous polymer solution below 100 ppb, which comprises recirculating an aqueous polymer solution through microporous hollow fibers grouped in a module having an air tight interior which surrounds the hollow fibers. A vacuum is applied to the interior of the fiber module to enhance transportation of oxygen through the walls of the hollow fibers and out of the module interior.