Concentrate for activating and defining bath and bath obtained from this concentrate
US5628838A · kind A · utility
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3References
6Claims
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Key dates
| Filing date | Aug 4, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Aug 4, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/80
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Concentrate for activating and refining bath employed in processes of zinc phosphatization, characterized by the fact that it is based on an aqueous dispersion containing from 2 to 20% by weight of Jernstedt salts, the concentration of titanium in the dispersion consequently being from 140 to 10,000 ppm of Ti, this dispersion in addition containing: PA0 a proportion of from 0.2 to 8% by weight of at least one dispersing or sequestering agent and PA0 a proportion of from 0.05 to 7% by weight of at least one thickener based on polysaccharide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.