Method for preparing an aqueous polyacrylate emulsion for protecting metal surface against corrosion and pre-lubrication thereof and resulting emulsion
US6458887B1 · kind B1 · utility
1Cited by
2References
28Claims
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Key dates
| Filing date | May 21, 2001 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The method includes the steps of: preparing an organic mixture of oil, monomers selected among acrylic acid—and methacrylic acid esters and at most 25% of an acrylic or methacrylic monomer having an acide, amide, amine or epoxy group; placing the mixture in mini-emulsion in an aqueous phase in the presence of a co-solvent, preferably of the polyalkylene glycol type; and copolymerising the monomers in emulsion. When the emulsion is applied in a thin coating on a metal surface, it provides simultaneously a dry appearance, efficient protection and a pre-lubricating effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.