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:
May. 31, 1988
Filed:
Sep. 16, 1985
Applicant:
Inventors:
Walter L Vaughn, Lake Jackson, TX (US);
Rafael E Guerra, Lake Jackson, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C02F / ;
U.S. Cl.
CPC ...
210670 ; 210681 ; 210687 ; 210688 ; 585820 ;
Abstract
Particles, fibers, or filaments of ethylene/carboxylic acid copolymers or terpolymers, especially in highly porous or microporous form, are employed in removing contaminants from solution in aqueous and/or organic liquids, especially metal contaminants. The porous polymers, having a surface area/weight ratio of at least about 0.5 m.sup.2 /gm, are useful alone, but may also be used in conjunction with, or in tandem with, previously known ion exchange resins such as polyacrylic acid crosslinked with divinylbenzene.