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. 12, 1998
Filed:
Jul. 19, 1996
Applicant:
Inventors:
Jiansheng Tang, Naperville, IL (US);
Raymond T Cunningham, Mechanicsville, VA (US);
Bo Yang, Naperville, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ; C23F / ; C02F / ; C09K / ;
U.S. Cl.
CPC ...
422 16 ; 422-7 ; 422 15 ; 422 17 ; 252180 ; 252181 ; 2523891 ; 25238922 ; 25238932 ; 25238961 ; 252390 ; 252393 ; 252394 ; 210696 ; 210698 ;
Abstract
A biodegradable corrosion inhibitor, scale inhibitor and dispersant is provided. The inhibitor comprises one or more polymers from a family of poly(amino acid) polymers that include hydroxamic acid-containing sidechains. Methods of reducing corrosion and scale build-up and a method of dispersing solid particulates in a solution or slurry are provided by adding a polymer of the present invention to a solution or slurry.