Permanent decrease of wood hardness by in situ polymerization of pre-polymers
US5731096A · kind A · utility
2Cited by
6References
13Claims
0Family size
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Key dates
| Filing date | Aug 4, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Aug 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/662
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A wood article is submitted to a vacuum in an autoclave to remove air that it contains. Then, a solution which contains a wood preservative, a water-soluble cross-linkable prepolymer and a polymerization initiator is introduced into the autoclave. Polymerization to form a polymeric network in the wood article is carried out in an atmosphere substantially free of oxygen, while the preservative is chemically fixed to the wood. The result is a wood article with a permanently reduced hardness and an increased moisture content at equilibrium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.