Gaseous or vapor phase treatment of wood with boron preservatives
US5024861A · kind A · utility
6Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1988 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Jun 23, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27K3/52
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention comprises a process for the preservation of timber with a boron based compound, such as trimethyl borate. The timer is dried to a low moisture content, is then subjected to a vapor of the boron compound in a suitable treatment vessel, and after vapor treatment is steam conditioned to return the moisture content of the timber to a normal working level. The vapor treatment is preferably carried out under heat and reduced pressure. Timber preserved by the process is also claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.