Corrosion resistant films based on ethylenically unsaturated monomer modified epoxy emulsions
US7138444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2003 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Jan 4, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2363/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides high solids epoxy-based autodeposition coating materials and a means to obtain the high solids epoxy-based autodeposition coating materials that eliminates/minimizes the need for process solvents. An epoxy pre-polymer is used. The epoxy pre-polymer is combined with ethylenically unsaturated monomer, as an alternative to organic solvent, to yield an epoxy-monomer blend, which may be blended with other coating components and additives. The resulting blend is then dispersed in water with surfactant and the ethylenically unsaturated monomer is polymerized (in the presence of other formulation components) to yield a dispersion. The dispersion may then be used as one component of a coating formulation. The coating formulation can then be applied to materials and cured to form a final coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.