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. 18, 1997
Filed:
Jan. 17, 1996
Ali Naraghi, Missouri City, TX (US);
Nick Grahmann, Sugar Land, TX (US);
Champion Technologies Inc., Houston, TX (US);
Abstract
The present invention relates to blends of individual corrosion inhibitors with phosphate esters for protection of ferrous metals against attack by a corrosive environment. These blends are synergistically more effective than each of the individual corrosion inhibitors. The phosphate esters of the present invention are the reaction products of ethoxylated, propoxylated, or butoxylated alcohols or phenols with phosphating agents. Other corrosion inhibitors suitable for blending with the phosphate esters include fatty amines, poly amides, imidazolines, poly imidazolines, quaternary amines, poly quats and dimer, trimer, and polymeric acids. Phosphate esters may comprise any portion of the total amount of corrosion inhibitors in the blend, but the preferred concentration is from about 5 to about 50 weight percent phosphate ester. The corrosion inhibitor blends may be diluted to any concentration with solvents or other fluids as necessary for particular applications.