WO2006135858A1 - Procédé d’étanchéification du bois - Google Patents

Procédé d’étanchéification du bois Download PDF

Info

Publication number
WO2006135858A1
WO2006135858A1 PCT/US2006/022763 US2006022763W WO2006135858A1 WO 2006135858 A1 WO2006135858 A1 WO 2006135858A1 US 2006022763 W US2006022763 W US 2006022763W WO 2006135858 A1 WO2006135858 A1 WO 2006135858A1
Authority
WO
WIPO (PCT)
Prior art keywords
wood
oil
range
treatment
boiling point
Prior art date
Application number
PCT/US2006/022763
Other languages
English (en)
Inventor
Lars Norden
Lars Nyborg
Flemming Correll Frank
Thomas Scharling Christensen
Original Assignee
Osmose, Inc.
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 Osmose, Inc. filed Critical Osmose, Inc.
Priority to EP06772894A priority Critical patent/EP1888260A4/fr
Priority to EA200800012A priority patent/EA200800012A1/ru
Priority to AU2006257893A priority patent/AU2006257893A1/en
Publication of WO2006135858A1 publication Critical patent/WO2006135858A1/fr
Priority to SE0700293A priority patent/SE0700293L/sv

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
    • B27K3/34—Organic impregnating agents
    • B27K3/50—Mixtures of different organic impregnating agents
    • 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
    • B27K3/0207—Pretreatment of wood before impregnation
    • B27K3/0214—Drying
    • 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
    • B27K2240/00—Purpose of the treatment
    • B27K2240/70—Hydrophobation treatment

Definitions

  • This invention relates to processes for water-proofing wood, and more particularly to processes by which wood can be water-proofed and treated with additives in the same process step.
  • the absorption of moisture by wood is generally considered to interfere with the usefulness of wood and wood products.
  • Moisture can shorten the useful lifespan of wood by increasing the susceptibility of the wood to fungal and bacterial decay.
  • Moisture can also reduce the effectiveness of wood treatments such as painting in that condensation which is trapped inside the wood by an overcoat such as, for example, a layer of paint, can cause the overcoat to blister and separate from the wood.
  • the absorption of moisture by wood can result in swelling and warping, and cyclic absorption and drying can cause permanent distortion of the wood over time, thus reducing the service life of the timber.
  • moisture-proofed wood is often further treated with additional surface coats such as paints or stains.
  • Moisture-proofing oils must not prevent the overcoat from adhering to the wood.
  • the present invention is an improvement over currently available processes for the protection of wood or wood products, particularly timber, from moisture absorption.
  • the present invention enables wood to be water-proofed in much less time than required by existing processes, allowing the use of additives which would otherwise be degraded by long exposure to high temperatures.
  • a process for water-proofing wood comprising the steps of 1) providing pre-dried wood or wood product; 2) providing a mixture comprising one or more high-boiling point oils, one or more drying oils, and preferably, a siccative; 3) contacting the wood or wood product with the mixture for a time in the range of from 0.1-5 (hours) at one or more temperatures in the range of from 35° C to 90° C, at one or more pressures in the range of from 0-15 atmospheres.
  • the present invention enables treatment with additives and waterproofing to take place in a single step.
  • the present invention provides a process as elucidated above, wherein the mixture of oils further comprises one or more additives.
  • one or more of the additives are temperature sensitive.
  • the temperature-sensitive additive is EPBC.
  • the method of the present invention is particularly useful in the protection of wood from moisture in the period between the manufacture of the boards and its first painting.
  • Wood treated with the process of the present invention can remain sufficiently dry for time periods of up to 10 months without the necessity of a follow up overcoat application.
  • water-repellent wood which is treated according to the inventive process.
  • Fig. IA- IF show a schematic of the process of the invention.
  • Fig. IA - Timber is transferred into the treatment vessel.
  • Fig. 1C - Oil mixture fills the vessel.
  • Fig. ID - Vessel is pressurized, forcing the preservative into the timber.
  • Fig. 2 - Wood which has been treated with oil stabilization according to the inventive process described herein.
  • Oils used were linseed oil and mineral oil. Treatment parameters were:
  • Fig. 3 Wood which has been treated according to a commonly used vacuum drying process.
  • the wood to be treated with the process of the present invention is preferably dry prior to treatment.
  • Wood which is "dry” as used herein has a moisture content of less than about 28 weight % water, and preferably a moisture content less than about 20 weight % water.
  • a wood or a wood product is treated with an oil mixture comprising a drying oil and a high boiling point oil.
  • a drying oil is an oil that oxidizes in contact with air and thereby hardens and dries.
  • the drying oils which can be used in the present invention include linseed oil, "ricin” oil, tall oil, cottonseed oil, corn oil, soybean oil, rung oil, and other oils that oxidize and harden upon contact with air.
  • drying oils such as linseed oil, which result in a dry surface which can adhere to water-based stains and coatings and which has little or no stickiness.
  • the oil mixture also comprises a "high-boiling point" oil, i.e., an oil with a boiling point in the range of from 250 ⁇ X ⁇ 400 °C at atmospheric pressure.
  • High-boiling point oils which can be used include mineral oil and other technical White Oils.
  • the high boiling point oil content should be in the range of from 30 - 70 wt %, and preferably in the range of 40 - 60 wt %, where the wt % is based upon the total weight of the high-boiling point and drying oil components.
  • the mineral oil content is about 50 wt %, based upon the total weight of the high-boiling point and drying oil components.
  • the oil mixture preferably comprises a siccative in order to catalyze the drying reaction of oxygen with the drying oil, decreasing the drying time.
  • siccatives which can be used in the present invention include cobalt-, manganese-, lead-, zirconium-, zinc- or calcium-carboxylate containing siccatives.
  • the siccative is used in a weight percent which is in the range of from .005 and .5 wt %, and preferably .05 to .2 wt %, based on the weight of the oil mixture.
  • the oil mixture may comprise additional components, including as non-limiting examples; biocides, pigments, dyes, uv filters, and flame retardants.
  • UV-f ⁇ lters can be incorporated to protect the water-proofing oil and the wood, especially when they are unpigmented, from UV degradation.
  • biocide types which can be included in the oil mixture include fungicides, insecticides, bactericides, termiticides, etc.
  • additives such as uv filters be “oil soluble.”
  • oil soluble it is meant that the biocide has a solubility in the oil mixture to be used of more man about .05 wt % , based upon the combined weight of the oil and biocide.
  • Other additives can generally be either oil soluble, present as particles, or both.
  • Biocides are preferred additives. In general, it is also preferred that biocide additives be oil soluble. Examples of biocides which generally have such solubility in the oil mixtures of the present invention include iodopropynyl butyl carbamate (IPBC), azoles, isothiazolones, bifenthrin, permethrin, cypermethrin, etofenprox, clotbianidin and quaternary ammonium compounds, many copper compounds, and mixtures of the foregoing. Many desirable biocides, and other additives as well, may not have such a solubility in the oil mixture to be used.
  • IPBC iodopropynyl butyl carbamate
  • IPBC azoles
  • isothiazolones azoles
  • isothiazolones azoles
  • isothiazolones azoles
  • isothiazolones azoles
  • isothiazolones b
  • biocide or additive in a dispersion or other particulate form, given that the particles are small enough to penetrate the wood.
  • particle size parameters are given in co-pending U.S. application 11/126,839, filed on May 11, 2005, published as 2005/0265893 and incorporated herein by reference.
  • biocides and other additives can be used in the method of the present invention, including many or all BPD Notified biocides available in Europe.
  • Exemplary Fungicides include, Dazomet (CAS # 533-74-4 ), Sorbic acid (CAS # 110- 44-1 ), IPBC (CAS # 55406-53-6 ), Tebuconazole (CAS # 107534-96-3 ), Thiabendazole (CAS # 148-79-8 ), Fenpropimorph (CAS # 67564-91-4 ), Borate polymer (CAS # 214710- 34-6 ), Copper oxide ( CAS # 1317-38-0 ), Copper ( II ) carbonate ( CAS # 12069-69-1 ) , copper dihydroxide ( CAS # 20427-59-2 ), Tolyfluanid ( Preventol A5 ) (CAS # 731-27-1 ) Propiconazole (CAS # 60207-90-1 ), DDAC (CAS # 7173-51-5 + another ), BAC (CAS # 68424-85-1), Bardap 26 (CAS # 94667-33-1 ), TMAC ( Quat ) (CAS # no number ), Imaz
  • Exemplary Insecticides include Etofenprox (CAS # 80844-07-1 ), Clothianidin (CAS # 210880-92-5 ), Thiamethoxam (CAS # 153719-23-4 ), Flufenoxuron (CAS # 101463-69-8 ) Bifenthrin (CAS # 82657-04-3 ), Permethrin (CAS # 52645-53-1 ), Chlorfenapyr (CAS # 122453-73-0 ) and Sulphuryl difluride (CAS # 2699-79-8 ).
  • Pigments and dyes are preferred additives, and they do not need to be soluble in the oil solution in order to be used in the process of the present invention. As with biocides, they can be applied as a suspension, dispersion or other particulate form if necessary.
  • pigments which can be included in the present invention are iron oxide, titanium oxide, etc. iron oxides including red iron oxides, yellow iron oxides, black iron oxides and brown iron oxides, carbon black, graphite, black micaceous iron oxide, aluminum flake pigments, pearlescent pigments, iron hydroxide, calcium carbonate, calcium phosphate, calcium oxide, calcium hydroxide, bismuth oxide, bismuth hydroxide, bismuth carbonate, copper carbonate, copper hydroxide, basic copper carbonate, silicon oxide, zinc carbonate, barium carbonate, barium hydroxide, strontium carbonate, zinc oxide, zinc phosphate, titanium dioxide, zinc sulfide, antimony oxide.
  • iron oxides including red iron oxides, yellow iron oxides, black iron oxides and brown iron oxides, carbon black, graphite, black micaceous iron oxide, aluminum flake pigments, pearlescent pigments, iron hydroxide, calcium carbonate, calcium phosphate, calcium oxide, calcium hydroxide, bismuth oxide, bismuth hydroxide, bis
  • Non-limiting examples of organic pigments include groups of Monoazo (arylide) such as Diacylide yellows, diniraniline orange, BON reds and lithol rubine; Disazo (diarylide), Disazo condensation, Benzimidazolone, Beta Naphthol, Naphthol, Metal complex, Isoindoline & Isoindolinone, Quinacridone, perylene, perinone, anthraquinone, diketo-pyrrolo pyrrole, dioxazine, triacrylcarbonium, the phthalocyanine pigments, such as cobalt phthalocyanine, copper phthalocyanine, copper semichloro- or monochlorophthalocyanine, copper phthalocyanine, metal-free phthalocyanine, copper polychlorophthalocyanine, etc.
  • Monoazo arylide
  • Disazo condensation Benzimidazolone
  • Beta Naphthol Naphthol
  • Metal complex I
  • organic azo compounds organic nitro compounds, polycyclic compounds (such as phthalocyanine pigments, quinacridone pigments, perylene and perinone pigments), diketopyrrolo-pyrrole(DPP) pigments, thioindigo pigments, dioxazine pigments, quinophthalone pigments, and triacrylcarbonium pigments; Diaryl pyrrolopyroles, such as PR254.
  • Organic pigments are also grouped according to the color they produce, e.g. blues, blacks, greens, yellow, reds and browns.
  • organic pigments examples include: Pigment yellows 1, 3, 12, 13, 14, 17, 81, 83, 65, 73, 74, 75, 97, 111, 120, 151, 154, 175, 181, 194, 93, 94, 95, 128, 166, 129, 153, 109, 110, 173, 139, 185, 138, 108, 24; and Pigment Oranges 5, 36, 60, 62, 65, 68 S 61, 38, 69, 31, 13, 34, 43, 51, 71, 73; Pigment Reds 3, 4, 171, 175, 176, 185, 208, 2, 5, 12, 23, 112, 146, 170, 48, 57, 60, 68, 144, 166, 214, 220, 221, 242, 122, 192, 202, 207, 209, 123, 149, 178, 179, 190, 224, 177, 168, 216, 226, 254, 255, 264, 270, 272; Pigment yellows 1, 3, 12,
  • An advantage of the process of the present invention is that it can be used with temperature-sensitive additives.
  • temperature sensitive it is meant that the additive is thermally degraded by exposure to temperatures above 60°C for times greater than 1 hour such that greater than 20% of the additive molecules are destroyed.
  • a biocide is IPBC.
  • the wood and wood products which can be treated according to the process of the present invention include timber, lumber, multi-ply wood and other wood products, such as composite wood products and wooden cladding boards.
  • the treatment of cladding with the process of the present invention is particularly economical and effective.
  • the wood or wood product to be treated is pre-dried before treatment with the present process.
  • the pre-dried wood is contacted with the oil mixture at a temperature in the range of from 35°C to 90 0 C, preferably at between 75 0 C to 85 0 C.
  • the oil mixture is applied at a pressure of from 0 to 15 atm, with a preferred range of pressures being 0-2 atmospheres for a time in the range of from 0.1 to 5 hours, with a time in the range of from .25 to 2.5 h being preferred.
  • ambient pressure is 0 atm and complete vacuum is -1 atm
  • additional pressure steps can be implemented before and/or after the above.
  • a preceding step conducted at pressures which are below atmospheric (i.e., below 0 atm with the convention used herein) can be used to extract some or all of the air from the wood.
  • Such a step can be conducted for a time greater than 5 minutes, and at one or more pressure differentials in the range of from 0 to -.9 atm, not inclusive of 0 atm.
  • the pressure differential created in this step can be used to pump the oil into the treatment vessel, if desired.
  • a step which removes excess oil from the treated wood or wood product can be implemented following treatment.
  • the wood is exposed to one or more pressure differentials in the range of from 0 to -.9 atm, not inclusive of 0 ami, for a time greater than 3 minutes.
  • the pressure differential created in this step can be used to pump the oil out of the treatment vessel, if desired.
  • the treatment of the wood can be carried out in vessels which are known in the art for treating wood.
  • the treatment is carried out as a double- vacuum process. The details of such a process are known in the art.
  • Wood which has been treated according to the present invention generally has a surface which accepts paint or other treatments which are oil or water-based. Accordingly, the treated surfaces can be treated further ("post-treatment"), such as with paints or stains.
  • Wood which has been treated according to the process of the present invention has the ability to remain sufficiently dry for long periods of time after water-proofing.
  • the method of the present invention slows the absorption of water such that during wet seasons, the rate of water absorption is low enough that there is no "shock effect" to the wood due to sudden absorption of water.
  • the wood water content is generally low enough such that decay is retarded.
  • the moisture inhibiting properties of the treatment may decline with time. It is thus preferable to post-treat the wood within about 10 months of water-proofing treatment.
  • This example provides an illustration of the process of the present invention.
  • Pre- dried Scots pine - Pinus Sylvestris was used.
  • the treatment was as follows. Treatment time and length: -0.9 bar for 20 minutes followed by 5 minutes holding at atmospheric pressure and finally -0.9 bar for 20 minutes., treatment temperature was 70-75 °C, type of oils used: linseed oil and mineral oil in a 50 wt% based upon the combined weight of the linseed and mineral oils.
  • Manganese and Cobalt carboxylates were used in .15 wt % and .05 wt%, respectively. Red iron oxide pigment paste was also present in 5 wt %. The results are shown in Figure 2.
  • the following example is a counterexample of a widely used process.
  • This example provides a comparative example using a vacuum drying process.
  • the treatment was as follows. Treatment vessel was flooded with a mixture of linseed oil and mineral oil in a 50 wt% based upon the combined weight of the oils at about 75 °C. The oil was circulated for about 1 hour, and drying was initiated under vacuum, drying was carried out for 10 hours (water is extracted as steam which is condensed and collected for mass balance calculation), vessel was drained and final vacuum pulled for 45 minutes. Results are shown in Figure 3.

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

La présente invention concerne un procédé permettant de rendre le bois et les produits du bois étanches à l’eau. Ce procédé comprend l’étape consistant à traiter le bois ou les produits du bois préalablement séchés avec un mélange comprenant une ou plusieurs huiles siccatives et une ou plusieurs huiles à point d’ébullition élevé. Ce procédé peut être réalisé à des pressions positives et peut également être utilisé pour traiter le bois ou les produits du bois avec des additifs sensibles à la température.
PCT/US2006/022763 2005-06-10 2006-06-12 Procédé d’étanchéification du bois WO2006135858A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06772894A EP1888260A4 (fr) 2005-06-10 2006-06-12 Procédé d étanchéification du bois
EA200800012A EA200800012A1 (ru) 2005-06-10 2006-06-12 Способ влагоизоляции древесины
AU2006257893A AU2006257893A1 (en) 2005-06-10 2006-06-12 Process for moisture-proofing wood
SE0700293A SE0700293L (sv) 2005-06-10 2007-02-07 Förfarande för att göra trä vattentätt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68965705P 2005-06-10 2005-06-10
US60/689,657 2005-06-10

Publications (1)

Publication Number Publication Date
WO2006135858A1 true WO2006135858A1 (fr) 2006-12-21

Family

ID=37532636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/022763 WO2006135858A1 (fr) 2005-06-10 2006-06-12 Procédé d’étanchéification du bois

Country Status (5)

Country Link
EP (1) EP1888260A4 (fr)
AU (1) AU2006257893A1 (fr)
EA (1) EA200800012A1 (fr)
SE (1) SE0700293L (fr)
WO (1) WO2006135858A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2906493A1 (fr) * 2006-09-28 2008-04-04 Pierre Fenneteau Bois Sarl Procede de traitement de bois,transformation par trempage dans de l'huile.
WO2016046760A1 (fr) * 2014-09-23 2016-03-31 Royal Termo Tre As Procédé séquentiel de production d'huile de lin purifiée, pressée à froid présentant des propriétés de pénétration dans le bois améliorées
EP2998087A3 (fr) * 2014-09-01 2016-07-06 Royal Termo Træ ApS Procédé de fabrication pour une durabilité élevée, élément de bois d'oeuvre composite à isolation élevée et élément en bois composite
EP4144496A1 (fr) * 2021-09-02 2023-03-08 Magnus Mewes Procédé d'usinage d'un corps en bois et corps en bois usiné selon le procédé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305978A (en) * 1979-03-05 1981-12-15 Haeger Bror O Process for treatment of wood
US4366627A (en) * 1981-04-08 1983-01-04 Hager Bror O Process for the treatment of wood
US4464848A (en) * 1980-10-17 1984-08-14 Kenogard Ab Process for treating wood
US6461469B1 (en) * 1999-08-18 2002-10-08 Windsor Technologies Limited Method for the manufacture of a finished product from a lignocellulosic material
US20030213401A1 (en) * 2000-12-15 2003-11-20 Koppers-Hickson Timber Protection Pty Limited Material and method for treament of timber

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995077A (en) * 1975-07-24 1976-11-30 Hager Aktiebolag Process for treatment of wood

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305978A (en) * 1979-03-05 1981-12-15 Haeger Bror O Process for treatment of wood
US4464848A (en) * 1980-10-17 1984-08-14 Kenogard Ab Process for treating wood
US4366627A (en) * 1981-04-08 1983-01-04 Hager Bror O Process for the treatment of wood
US6461469B1 (en) * 1999-08-18 2002-10-08 Windsor Technologies Limited Method for the manufacture of a finished product from a lignocellulosic material
US20030213401A1 (en) * 2000-12-15 2003-11-20 Koppers-Hickson Timber Protection Pty Limited Material and method for treament of timber

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1888260A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2906493A1 (fr) * 2006-09-28 2008-04-04 Pierre Fenneteau Bois Sarl Procede de traitement de bois,transformation par trempage dans de l'huile.
EP2998087A3 (fr) * 2014-09-01 2016-07-06 Royal Termo Træ ApS Procédé de fabrication pour une durabilité élevée, élément de bois d'oeuvre composite à isolation élevée et élément en bois composite
WO2016046760A1 (fr) * 2014-09-23 2016-03-31 Royal Termo Tre As Procédé séquentiel de production d'huile de lin purifiée, pressée à froid présentant des propriétés de pénétration dans le bois améliorées
EP4144496A1 (fr) * 2021-09-02 2023-03-08 Magnus Mewes Procédé d'usinage d'un corps en bois et corps en bois usiné selon le procédé

Also Published As

Publication number Publication date
AU2006257893A1 (en) 2006-12-21
SE0700293L (sv) 2007-04-10
EA200800012A1 (ru) 2008-04-28
EP1888260A4 (fr) 2009-12-30
EP1888260A1 (fr) 2008-02-20

Similar Documents

Publication Publication Date Title
US9937634B2 (en) Compositions and methods for treating cellulose-based materials with micronized additives
CA1300441C (fr) Systeme de preservation du bois
CA2510047C (fr) Methode de protection du bois au moyen d'une meilleure penetration d'agents de conservation et une solution a cet effet
Morrell Protection of wood-based materials
US7959723B2 (en) Use of biocide compositions for wood preservation
EP1002630B1 (fr) Procédé de traitement de bois
US20140147691A1 (en) Wood preservative formulation
CA2002346A1 (fr) Preservatif a bois et produit pour le traitement du sol
WO2006135858A1 (fr) Procédé d’étanchéification du bois
US20080026152A1 (en) Process for post-treatment of amine-based preservative-treated wood
EP1735130A1 (fr) Produits de preservation du bois et procedes de preservation du bois
Cooper et al. Fixation and leaching of red maple (Acer rubrum L.) treated with CCA-C
US3695920A (en) Esthetic wood product
EP1372919B1 (fr) Concentre permettant la conservation du bois
Thompson Preservative treatment of hardwoods: a review
FI97707C (fi) Puunsuojausmenetelmä
Morrell 14 Protection of Wood-Based
DD155001A1 (de) Holzschuetzende anstrichstoffe

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2006772894

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2006257893

Country of ref document: AU

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 564354

Country of ref document: NZ

WWE Wipo information: entry into national phase

Ref document number: 200800012

Country of ref document: EA

ENP Entry into the national phase

Ref document number: 2006257893

Country of ref document: AU

Date of ref document: 20060612

Kind code of ref document: A