Composite wood products from solvent extracted wood raw materials
US5665798A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1995 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Dec 27, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L97/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Wood products of superior strength are produced from wood particulates that have been extracted with a solvent to remove volatile organic compounds and a significant proportion of pitch from the wood particulates. The products are especially resistant to weakening caused by water immersion. As a consequence of the enhanced strength and stiffness of the composites, wood products may be made tier, and of lighter weight, for the same equivalent strength and stiffness at lower cost. The processes of drying the particulate raw material and forming the composite wood products, by subjecting to heat and pressure, are virtually free from emissions of volatile organic compounds into the environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.