Treatment for cement composite articles
US8202581B2 · kind B2 · utility
4Cited by
148References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cement fiberboard substrate is treated on at least one edge of the substrate with an aqueous solution containing at least one phosphorus acid or salt of a phosphorus acid. The treated edge is overcoated with a sealer, primer or topcoat. The resulting prefinished fiber cement siding product has improved coating adhesion, especially near burnished regions and near edges and corners proximate the burnished regions. A phosphorus acid or salt of a phosphorus acid also may be added to the sealer to provide further improvement in coating adhesion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.