Impregnation process
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 8, 2012
Grant Date -
Jun 7, 2007
app pub date -
Aug 25, 2005
filing date -
Feb 18, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a process for impregnating wood or wood based material. A working solution is preheated to a temperature above the atmospheric boiling point (“a super hot temperature”) above the atmospheric boiling point (“a super hot temperature”) of the working solution, at an elevated pressure sufficient to maintain the working solution in the liquid phase. The working solution is contacted with a wood or wood based material at a super hot temperature and an elevated pressure to cause impregnation of the solution into the wood or wood based material. The impregnated wood or wood based material and any remaining working solution, waste material and/or by-products are then separated.
First Claim
Other Claims data not available
