Coated metal plate and exterior building material
US10077367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2014 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Mar 26, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2419/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This coated metal plate is a chromate-free coated metal plate for exterior applications, which comprises a metal plate and a coating film that is arranged on the metal plate. The coating film contains 0.2-15 vol % of porous particles as a gloss control agent, and contains 0.2-15 vol % of primary particles as a matting agent. If R1 (μm) is the number average particle diameter of the gloss control agent, R2 (μm) is the number average particle diameter of the matting agent, T (μm) is the film thickness of the coating film, σ1 (μm) is the standard deviation of the number-based particle size distribution of the gloss control agent and σ2 (μm) is the standard deviation of the number-based particle size distribution of the matting agent, the coated metal plate satisfies the following formulae. (R1+2σ1)/T≤0.7R1≥2.02.0≤(R2+2σ2)/T≤7.013≤T≤20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.