Anti-corrosive paint
US4501615A · kind A · utility
8Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | May 31, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/086
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An anti-corrosive coating composition includes as an anti-corrosive pigment dispersed in a film-forming binder a salt of a polyvalent metal cation and an organic polyphosphonic acid containing at least 2 phosphonic acid groups. The ratio of polyvalent metal cations to phosphonate groups in the salt is at least 0.8/n:1, where n is the valency of the polyvalent metal ion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.