Patent · US Active

Rinsable metal pretreatment methods and compositions

US8585834B2 · kind B2 · utility

1Cited by

5References

11Claims

0Family size

Inventors

Edward A. Rodzewich · Flourtown, US
Jeffrey I. Melzer · Lansdale, US
Philip D. Deck · Ardsley, US
Donald Wayne Whisenhunt, Jr. · Schenectady, US
William S. Carey · Swarthmore, US
David B. Engel · Clifton Park, US
Bret Ja Chisholm · Clifton Park, US
Christopher M. Carter · Chardon, US

Key dates

Filing date	Jun 10, 2008
Grant date	Nov 19, 2013
Priority date	—
Expiry date	May 8, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C2222/20
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Chromate-free and metal phosphate free treatments and compositions for applying a conversion or passivation coating for metals, more particularly, steel, zinc coated steel, and aluminum surfaces. The methods of the invention comprise contacting the requisite metal surface with a treatment composition comprising a member or members comprising one or more Group IV B elements, fluoride, and phosphonic acid or phosphonate. Optionally, a silane may be added as a treatment component.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.