EP2152482A1 - Bois modifié et procédé de fabrication d'un bois modifié - Google Patents

Bois modifié et procédé de fabrication d'un bois modifié

Info

Publication number
EP2152482A1
EP2152482A1 EP08753825A EP08753825A EP2152482A1 EP 2152482 A1 EP2152482 A1 EP 2152482A1 EP 08753825 A EP08753825 A EP 08753825A EP 08753825 A EP08753825 A EP 08753825A EP 2152482 A1 EP2152482 A1 EP 2152482A1
Authority
EP
European Patent Office
Prior art keywords
wood
bar
vacuum
minutes
specimen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08753825A
Other languages
German (de)
English (en)
Inventor
Mats Westin
Stig Lande
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kebony AS
Original Assignee
Kebony AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kebony AS filed Critical Kebony AS
Publication of EP2152482A1 publication Critical patent/EP2152482A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
    • B27K3/156—Combined with grafting onto wood fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation

Definitions

  • WPG Weight Percent Gain
  • Figure 1 Duration of vacuum step versus chemical uptake
  • Figures 2 and 3 Two blocks cut in half (top and right end-sealed and bottom EN252 stake).
  • Figure 4 Two pine blocks cut in half. On top the one with 75% HW, bottom 60% HW.
  • Furan polymer modified wood is produced by first impregnating the wood with a suitable amount of a polymerizable liquid of low molecular furan derivatives, e.g. furfural, furfuryl alcohol, bishydroxymethylfuran or combinations thereof, and optionally catalysts, initiators, low boiling point alcohols such as ethanol or other compounds depending upon the nature of the impregnating solution. After impregnation the wood is heated, whereby the polymerizable compounds are polymerized into a furan polymer in the wood cells.
  • a polymerizable liquid of low molecular furan derivatives e.g. furfural, furfuryl alcohol, bishydroxymethylfuran or combinations thereof
  • catalysts, initiators, low boiling point alcohols such as ethanol or other compounds depending upon the nature of the impregnating solution.
  • the polymerizable component is utilized without dilution by a diluent such as water or other solvent.
  • the impregnation is done by first applying the impregnation liquid to the wood under a pressure of at least 5 bar for a time period of at least 30 minutes.
  • the pressure is at least 10 bar and the impregnation time under this pressure is between 30 and 60 minutes.
  • This overpressure step is followed by a prolonged vacuum step, where the impregnation vessel is evacuated and the pressure maintained at low levels (0.1 bar) for at least 4 hours.
  • the vacuum is maintained from 5 to 6 hours.
  • the wood is subjected to an initial air pressure of 2 to 6 bar for a time span of 10 to 30 minutes before the liquid impregnation is started, thus filling up more of the wood cell volume with air prior to impregnation.
  • the impregnation solution further comprises a low boiling point alcohol such as ethanol in an amount from 5 to 10%.
  • the impregnated wood is heated to a temperature in the range of 80 to 15O 0 C, whereby the polymerizable components are polymerized to a furan polymer in the wood cells. Since water is not used as a diluent, no further drying of the wood is required.
  • products obtainable by the described process can have a range of furan polymer retentions, with dry density increases, expressed as "Weight Percent Gain” (WPG), of the parent wood material ranging from 30 to 100 %.
  • WPG Weight Percent Gain
  • the products can exhibit WPG of from 30 to 80%, and according to yet another aspect a WPG of 70% or less.
  • FA refers to furfuryl alcohol .
  • the "FAlOO” mix is based on undiluted furfuryl alcohol with addition of catalysts.
  • the "FA40” mix is a waterborne furfuryl alcohol solution containing approximately 28% furfuryl alcohol with the addition of catalysts and stabilizing chemicals.
  • the "FA 50” mix is a waterborne furfuryl alcohol solution containing approximately 32 % furfuryl alcohol with the addition of catalysts and stabilizing chemicals.
  • the FAlOO -mix is based on a commercial recipe developed by Wood Polymer Technologies ASA (WPT, now Kebony ASA). A modification to the FAlOO mix was done after the first set of tests by adding 10% ethanol (m/m based on final mix).
  • Example 1 Control - Standard Lo wry process using FAlOO treatment mix. 12 bar pressure for 90 min followed by 60 min post-vacuum.
  • Example 2 FAlOO treatment mix. 12 bar pressure for 45 min followed by 6h post- vacuum (divided in 2h periods with intermediate weighting of the specimens).
  • Example 3 FAlOO treatment mix modified by addition of ethanol. 12 bar pressure for 60 min followed by 6h post-vacuum (divided in 2h periods with intermediate weighting of the specimens).
  • the resulting WPG was now 70% (315 kg/m 3 ) for the end-sealed pine sapwood blocks and approx. 50-60% (260-300 kg/m 3 ) for non-sealed EN252 stakes. This is almost the same WPG level as was reached with the waterborne FA50 mix used at Wood Polymer Technologies for preparation of the highest WPG-level for the EN252 test started June 2005.
  • Example 3 60 min pressure + 360 min vacuum In these trials 10% ethanol was added to the FAlOO-mix and the pressure time was increased slightly - 60 min instead of 45 min still shorter than the Standard 90 min.
  • the resulting WPG was slightly lower for the end-sealed pure sapwood but higher for the other groups. Especially for the beech and the high HW/SW ratio in pine there was a dramatic increase in uptake (better penetration in beech and into the heartwood zone of pine).

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

L'invention concerne un procédé de modification d'un spécimen de bois, dans lequel le spécimen de bois est immergé dans une solution d'imprégnation comprenant des dérivés de furanne de masse moléculaire faible, polymérisable, dans un récipient, le récipient est pressurisé jusqu'à entre 5 et 29 bars pendant entre 30 et 120 minutes, le spécimen de bois est soumis à un vide dans la plage de 0,01 à 0,5 bar pendant entre 60 et 600 minutes, et la solution d'imprégnation est polymérisée.
EP08753825A 2007-05-11 2008-05-09 Bois modifié et procédé de fabrication d'un bois modifié Withdrawn EP2152482A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US91732507P 2007-05-11 2007-05-11
PCT/NO2008/000164 WO2008140323A1 (fr) 2007-05-11 2008-05-09 Bois modifié et procédé de fabrication d'un bois modifié

Publications (1)

Publication Number Publication Date
EP2152482A1 true EP2152482A1 (fr) 2010-02-17

Family

ID=39645635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08753825A Withdrawn EP2152482A1 (fr) 2007-05-11 2008-05-09 Bois modifié et procédé de fabrication d'un bois modifié

Country Status (7)

Country Link
EP (1) EP2152482A1 (fr)
JP (1) JP2010526692A (fr)
AP (1) AP2009005063A0 (fr)
AU (1) AU2008251134A1 (fr)
CA (1) CA2686948A1 (fr)
RU (1) RU2009145034A (fr)
WO (1) WO2008140323A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013180565A1 (fr) * 2012-05-31 2013-12-05 Stichting Dienst Landbouwkundig Onderzoek Composition de conservateur de lignocellulose, procédé utilisant une telle composition, matière lignocellulosique préservée pouvant être obtenue par un tel procédé et produit comprenant une telle matière
WO2015154635A1 (fr) * 2014-04-11 2015-10-15 Branko Hermescec Produits dérivés du bois et non dérivés du bois chimiquement modifiés et leurs procédés de production
CN116209553A (zh) * 2020-07-29 2023-06-02 株式会社富然木材 改性的木质材料的制造方法、呋喃衍生物树脂化溶液及改性木质材料
CN113696291B (zh) * 2021-09-10 2022-08-30 南京林业大学 轻度糠醇改性协同密实化处理提升木材性能的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909450A (en) * 1956-06-27 1959-10-20 Koppers Co Inc Impregnating solutions and method of impregnation therewith
NO313183B1 (no) * 2000-10-12 2002-08-26 Marc Schneider Furanpolymer-impregnert tre, fremgangsmåte til fremstilling og anvendelse derav
NO313273B1 (no) * 2001-02-01 2002-09-09 Wood Polymer Technologies As Furanpolymer-impregnert tre, fremgangsmåte til fremstilling og anvendelser derav
NO318254B1 (no) * 2002-07-26 2005-02-21 Wood Polymer Technologies Asa Furanpolymer-impregnert tre, fremgangsmate for fremstilling av samme og anvendelse av samme

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008140323A1 *

Also Published As

Publication number Publication date
CA2686948A1 (fr) 2008-11-20
JP2010526692A (ja) 2010-08-05
AP2009005063A0 (en) 2009-12-31
AU2008251134A1 (en) 2008-11-20
RU2009145034A (ru) 2011-06-20
WO2008140323A1 (fr) 2008-11-20

Similar Documents

Publication Publication Date Title
US7008984B2 (en) Furan polymer impregnated wood
US20190077040A1 (en) Process for partial delignification and filling of a lignocellulosic material, and composite material structure able to be obtained by this process
DK1534480T3 (en) Furan polymer impregnated wood
CN1310744C (zh) 呋喃聚合物浸渍的木材
AU2002230310A1 (en) Furan polymer impregnated wood
JP7173509B2 (ja) 改質された木質材料の製造方法、フラン誘導体樹脂化溶液、および改質木質材料
EP2152482A1 (fr) Bois modifié et procédé de fabrication d'un bois modifié
JP7241768B2 (ja) アセチル化軟材の製造方法、アセチル化軟材木質要素、パネル、及び中密度繊維板
JP4551894B2 (ja) 木材処理用の配合物
JP7116403B2 (ja) フランポリマー含浸木材の製造方法
WO2023145902A1 (fr) Procédé de fabrication de matériau ligneux modifié, solution résinifiée de ５－ｈｍｆ, et matériau ligneux modifié
JP2020183052A (ja) フランポリマー含浸木材の製造方法
WO2023145900A1 (fr) Procédé de fabrication de matériau ligneux modifié, solution résinifiée de dérivé de furanne contenant un alcool polyvalent, et matériau ligneux modifié
JP2024506179A (ja) 木材ポリマー複合体の製造方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20091211

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17Q First examination report despatched

Effective date: 20100401

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100812