Compositions and methods for producing coatings with improved surface smoothness and articles having such coatings
US6544351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jul 12, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12181
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A coating composition produces a protective coating to a substrate, which coating has an improved surface smoothness. The coating composition comprises a mixture of at least a first type of particles and a second type of particles that are dispersed in a liquid medium. The particles form a total population of particles having a median ESD in a range from about 1 to about 7 micrometers. The different types of particles have different median ESDs. The first type of particles has a maximum ESD of about 40 micrometers, and the second type of particles has a maximum ESD of about 20 micrometers. A method for producing a coating having an improved surface smoothness comprises applying such a coating composition on a substrate and curing the coating composition to produce a protective coating. The coating may be further densified by a burnishing process or further improved by applying another coating comprising particles having ESDs less than about 4 micrometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.