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:
Oct. 17, 1989
Filed:
Sep. 03, 1987
Applicant:
Inventors:
Richard B Greenwald, Eagan, MN (US);
Chung-Tsing Liu, Bloomington, MN (US);
James A McDonell, St. Paul, MN (US);
Assignee:
Ecolab Inc., St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ;
U.S. Cl.
CPC ...
25217424 ; 25217423 ; 252548 ; 252D / ;
Abstract
A composition having a high chelation value may be made by blending about 50 to 80 wt-% of a polyether such as polyethylene glycol, about 20 to 50 wt-% of a polycarboxylate such as polyacrylate moiety or an acrylate monomer, and about 0.1 to 0.5 mole-%, based upon the polyacrylate moiety or the monomer, of an organic peroxy catalyst such as t-butyl perbenzoate at a temperature below about 110.degree. C. but sufficient to liquefy the blend and cause grafting of a polyether on the polycarboxylate.