Aqueous-based coating compositions comprising anionic polyurethane principal resin and anionic acrylic grind resin
US4978708A · kind A · utility
41Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Apr 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31688
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous-based basecoat compositions, useful for application to metal and/or plastic substrates, comprise an anionic polyurethane principal resin and an anionic acrylic pigment grind resin. The compositions are particularly adapted to application to substrates over a wide range of ambient humidities and have quick drying characteristics. The incorporation of an anionic acrylic grind resin, which is compatible with the anionic polyurethane principal resin, produces a coating which has good pigment wetting and dispersion characteristics with improved shelf life and color stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.