Chromate-free phosphate bonding composition
US6368394B1 · kind B1 · utility
25Cited by
16References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Oct 18, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A heat curable bonding composition for providing a coating to a solid substrate comprises water, phosphate ions, borate ions, and aluminum ions. The bonding composition has a pH in the range from about 1.4 to about 2.2, and is substantially free of chromate ions, molybdate ions, and magnesium ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.