Fixation process for heat-fixable preservative treated wood
US5652023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1996 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Feb 29, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27K2240/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved process for the fixation of preservatives in wood is disclosed which initiates the fixation process in the fixation vessel by the application of sufficient pressure to substantially obviate a thermal expansion effect of the treated wood; contacts the treated wood in the fixation vessel with an aqueous liquid heating medium preheated to a temperature of about 130.degree. to no more than about 200.degree. F. for a period of thirty minutes to about two hours; removes the aqueous liquid heating medium from the fixation vessel; applies a vacuum in the range of 10-30" Hg for a duration of up to about 30 minutes; and rinses the treated and fixed wood in said fixation vessel with heated clean water, heated to a temperature of about 200.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.