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US 2019/0054650 A1Published application
Modified wood product and a process for producing said product
AssigneeStora Enso OYJ
InventorsDuncan Mayes, Janne Pynnönen, Reeta-Maria Stöd
Life of this patent
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Abstract
The present invention relates to a process for preparing a modified wood product wherein a step of resin treatment is followed by a thermal modification step. The present invention also relates to a modified wood product produced using said process.
Claims15
A process for preparing modified wood comprising the steps of
- a. resin treatment of solid wood having a moisture content of at least 10%, wherein the resin solution comprises at least one of the group consisting of phenol formaldehyde, phenol urea formaldehyde, a melamine resin, lignin, tannin or a mixture thereof, followed by
- b. a thermal modification step wherein the wood is heated at a temperature of from 160° C. to 230° C. at atmospheric pressure.
A process for preparing modified wood comprising the steps of
- a. resin treatment of solid wood having a moisture content of at least 10%, wherein the resin solution comprises at least one of a group consisting of phenol formaldehyde, phenol urea formaldehyde, a melamine resin, lignin, tannin or a mixture thereof, followed by
- b. a thermal modification step wherein the wood is heated at a temperature of from 120° C. to 230° C. at a pressure higher than atmospheric pressure.
Dependencies are inferred from the claim text.