Polyphenolamine composition and method of use
US6607610B1 · kind B1 · utility
5Cited by
18References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2002 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Oct 18, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/83
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a composition for the treatment of metal substrates including an aqueous solution of a Group IVA metal ion, selected from the group consisting of zirconium, titanium, hafnium and mixtures thereof, and a water-soluble or water-dispersible polyphenolamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.