Process for the acetylation of wood elements
US8865318B2 · kind B2 · utility
1Cited by
1References
17Claims
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Key dates
| Filing date | Feb 4, 2011 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Feb 4, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/662
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composite wood product containing acetylated wood elements characterized by an average value in thickness swelling not exceeding 5% after subjection to 25 wet-dry/freeze-thaw cycles as described in Table II. Alternative characterizations include moduli of elasticity and rupture, and bending strength. A two stage process for the acetylation of wood elements is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.