EP 3634649 B1 20240214 - HYDROPHOBIC TREATMENT OF WOOD
Title (en)
HYDROPHOBIC TREATMENT OF WOOD
Title (de)
HYDROPHOBE BEHANDLUNG VON HOLZ
Title (fr)
TRAITEMENT HYDROPHOBE DU BOIS
Publication
Application
Priority
- FR 1755132 A 20170608
- EP 2018064751 W 20180605
Abstract (en)
[origin: WO2018224490A1] The present invention relates to a process for the esterification of all or some of the hydroxyl functions of a wood-type material and/or of one of the products derived therefrom, characterized in that said material is brought into contact with a fluid in a supercritical state carrying at least one natural unsaturated plant oil under conditions suitable for carrying out the esterification, and comprising at least the steps of: i) depositing, within a chamber, a wood-type material preferably having a water content of less than 20% by weight relative to its total weight and at least one natural unsaturated plant oil carried, preferably dissolved, in a liquid fluid capable of changing to a supercritical state under pressure; ii) subjecting the mixture to pressure conditions that are effective for the impregnation of the material by the oil; and iii) exposing the material impregnated by the oil obtained in step ii) to pressure and temperature conditions that are effective for causing the fluid to change to a supercritical state and carrying out the esterification reaction.
IPC 8 full level
CPC (source: EP)
B27K 3/086 (2013.01); B27K 3/346 (2013.01); B27K 2240/70 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2018224490 A1 20181213; EP 3634649 A1 20200415; EP 3634649 B1 20240214; FR 3067274 A1 20181214; FR 3067274 B1 20221209
DOCDB simple family (application)
EP 2018064751 W 20180605; EP 18729650 A 20180605; FR 1755132 A 20170608