Method of preserving wood with lanthanide derivatives
US4743473A · kind A · utility
3Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1987 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Feb 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/662
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention is a method for pressure treatment of wood using compositions comprising aqueous solutions of one or more lanthanide derivatives. Wood is immersed in a pressure vessel containing a lanthanide derivative composition, and hydrostatic pressure is applied. The treatment is carried out at temperatures not exceeding about 95.degree. C., and more preferably at between about 20.degree. C. and about 30.degree. C. Pressure should be greater than about atmospheric, and preferably about 10 psi to about 300 psi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.