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, 2000
Filed:
Dec. 15, 1997
Applicant:
Inventors:
M Dalil Rahman, Flemington, NJ (US);
John Saukaitis, Corpus Christi, TX (US);
Robert E Potvin, Providence, RI (US);
Mohammad Khadim, Dhahran, SA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
521 32 ; 525154 ; 5253288 ; 525376 ; 430175 ;
Abstract
A process for producing a deionizing resin, which comprises reacting an organic compound having at least one reactive hydroxy group and at least one active chelating site with an organic polymer matrix having at least one reactive --OH or --NH.sub.2 group, and thereby producing a chelated.sub.-- polymer complex, as shown in FIG. II or FIG. IV: ##STR1## Washing the polymer complex with water, followed by washing with a mineral acid solution and then again washing with water and thereby reducing the level of sodium, iron and chromium ions in the polymer complex to less than 100 ppb each.