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:
Mar. 23, 2010
Filed:
Mar. 28, 2005
Applicants:
Mingli Wei, Naperville, IL (US);
Vladimir A. Grigoriev, Chicago, IL (US);
Gary S. Furman, Jr., St. Charles, IL (US);
William J. Ward, Glen Ellyn, IL (US);
Inventors:
Mingli Wei, Naperville, IL (US);
Vladimir A. Grigoriev, Chicago, IL (US);
Gary S. Furman, Jr., St. Charles, IL (US);
William J. Ward, Glen Ellyn, IL (US);
Assignee:
Nalco Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L 77/06 (2006.01); C08G 69/48 (2006.01); C08F 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of stabilizing an aqueous solution of polyaminoamide-epichlorohydrin resin comprising sequentially adding to the solution about 0.1 to about 10 weight percent of one or more strong acids and about 0.1 to about 10 weight percent of one or more weak acids to prepare a stabilized solution having a pH of about 3-4.