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:
Apr. 29, 1986
Filed:
May. 23, 1984
Applicant:
Inventors:
Sheldon H Messing, Midland, MI (US);
Marylu B Gibbs, Midland, MI (US);
Alan C Kott, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
L08D / ;
U.S. Cl.
CPC ...
521 31 ; 525379 ;
Abstract
Anion exchange resins having improved anion capacity are prepared using an improved process whereby the reaction medium can be re-employed. The process comprises contacting a haloalkylated copolymer particle with a compound capable of displacing the halogen of the haloalkyl functionality (e.g., dimethylamine) in a reaction medium (e.g., water). Optionally, an ionizable electrolyte is incorporated into the reaction medium. After preparation of anion exchange resins, the reaction medium containing ionizable electrolyte is re-employed in preparing anion exchange resins.