EP1438165A1 - Agent de protection du bois et sa preparation - Google Patents

Agent de protection du bois et sa preparation

Info

Publication number
EP1438165A1
EP1438165A1 EP02758122A EP02758122A EP1438165A1 EP 1438165 A1 EP1438165 A1 EP 1438165A1 EP 02758122 A EP02758122 A EP 02758122A EP 02758122 A EP02758122 A EP 02758122A EP 1438165 A1 EP1438165 A1 EP 1438165A1
Authority
EP
European Patent Office
Prior art keywords
salicylic acid
peg
wood preservative
wood
preservative according
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Withdrawn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
EP02758122A
Other languages
German (de)
English (en)
Inventor
Sieglinde Bruhn
Rainer Marutzky
Volker Thole
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP1438165A1 publication Critical patent/EP1438165A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
    • A01N37/38—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
    • A01N37/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • 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
    • B27K3/153—Without in-situ polymerisation, condensation, or cross-linking reactions
    • 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
    • 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
    • B27K3/38—Aromatic compounds
    • 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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/001—Heating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides

Definitions

  • the invention relates to a wood preservative for protection against mold.
  • the invention further relates to a method for producing wood-based products with such a wood preservative.
  • Wood materials without a fungicide finish are covered with mold on their surface if there is continued moisture in the form of water vapor or running water. It was found that this growth requires a water activity value a w of at least 0.80 to 0.85. This a w value can be reached quickly on the surfaces of wood materials that have been stored on construction sites for a long time. Since the storage period from packaging to processing is often eight weeks or more, it is an object of this invention to protect the wood-based materials, in particular the panel material, from mold attack in this critical phase.
  • this object is achieved by a wood preservative containing salicylic acid.
  • a method for producing wood-based products, in particular chipboard, fiberboard or OSB, with a wood preservative according to the invention is characterized in that the wood-based materials to be pressed are added with 0.5-10% salicylic acid, calculated on atro-chip or fiber material, as a solid becomes.
  • the admixture of salicylic acid can take place before or after the chips or fibers are glued, for example with the aid of atomizers or the like, and is suitable for both organic and inorganically bonded wood-based materials.
  • the object mentioned at the outset is achieved by a wood preservative which, in addition to the salicylic acid, also contains polyethylene glycol (PEG).
  • PEG polyethylene glycol
  • the salicylic acid can be dissolved in the PEG and / or in low-boiling organic solvents, in particular ethanol.
  • the salicylic acid dissolved in ethanol would penetrate deeply into the treated wood-based material, so that only small amounts of salicylic acid remain on the wood-based material surface, which would form needle-shaped crystals under the influence of atmospheric moisture, which - since they have no liability whatsoever the wood material - mechanically removed and thus ineffective.
  • the inventive connection with PEG ensures good fixation of the salicylic acid on the surface of the material and limits the depth of penetration of the salicylic acid into the wood material to a maximum of 2 mm. For this reason, even small total amounts of the mixture according to the invention have the greatest possible action against mold.
  • a wood preservative is characterized by 0.5 to 10% by mass of salicylic acid, based on the PEG, and in a suitable mixture by up to 30% by mass of ethanol, based on the PEG.
  • ethanol can also serve as a solvent for salicylic acid.
  • the amount of ethanol should be so low due to procedural reasons due to the risk of fire as possible but as high as necessary. If the salicylic acid is dissolved in PEG, an exclusive addition of water would also be conceivable in order to maintain the flowability.
  • MDF boards for example, are not dimensionally stable in the presence of larger quantities of water.
  • Ethanol can also serve as an entrainer for the water after processing the PEG + salicylic acid in order to dry the plate surface as quickly as possible or to allow the PEG + salicylic acid to solidify.
  • the water content of a wood preservative according to the invention is preferably ⁇ 30% by mass, based on the PEG, which preferably has a degree of polymerization of 2000.
  • a dye for example Sudan blue, can be added to the ethanol.
  • a suitable mixture for a wood preservative according to the invention contains 70 to 80% by mass of PEG, 10 to 20% of an approximately 30% ethanolic solution of salicylic acid and approximately 10% by mass of water.
  • PEG 2000 is melted at about 60 ° C and kept at this temperature;
  • Salicylic acid is dissolved in ethanol to produce a 30% ethanolic solution of salicylic acid;
  • the mixture is provided with about 10 g of water.
  • a penetration depth of approximately 1 mm is achieved when the plate temperature is around 60 ° C. If the mixture according to this example contains 3% salicylic acid, 6 g of pure salicylic acid in and on the plate are to be expected as an effective amount.
  • the selected mixture can be applied, for example, by rolling, filling, pouring or spraying onto the plate surfaces which have cooled significantly below 75 ° C (decomposition temperature of the salicylic acid) after production.
  • Wood preservatives treated have been successful. After treatment of the plate surfaces, it was also possible after 8 to 10 weeks at 23 ° C and 95 to 98% rel. Humidity no mold infestation can be found. In contrast, untreated control samples were infected with mold after only one week of storage.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

L'invention concerne un agent contenant de l'acide salicylique, servant à protéger le bois contre la moisissure.
EP02758122A 2001-10-25 2002-07-26 Agent de protection du bois et sa preparation Withdrawn EP1438165A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10152728 2001-10-25
DE2001152728 DE10152728A1 (de) 2001-10-25 2001-10-25 Holzschutzmittel
PCT/DE2002/002746 WO2003037581A1 (fr) 2001-10-25 2002-07-26 Agent de protection du bois et sa preparation

Publications (1)

Publication Number Publication Date
EP1438165A1 true EP1438165A1 (fr) 2004-07-21

Family

ID=7703711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02758122A Withdrawn EP1438165A1 (fr) 2001-10-25 2002-07-26 Agent de protection du bois et sa preparation

Country Status (3)

Country Link
EP (1) EP1438165A1 (fr)
DE (1) DE10152728A1 (fr)
WO (1) WO2003037581A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015946A1 (de) * 2008-03-27 2009-10-01 Lcm Gmbh Holzbearbeitungsmittel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778786A (en) * 1985-04-03 1988-10-18 Minnetonka, Inc. Composition for transdermal drug delivery
DE3922366A1 (de) * 1989-07-07 1991-01-17 Lohmann Therapie Syst Lts Vorrichtung zur abgabe systemischer wirkstoffe an pflanzen und verwendung derselben
DE59003019D1 (de) * 1990-04-09 1993-11-11 Haltmeier Georg Mittel zum Imprägnieren von Holz.
DE4138209A1 (de) * 1991-11-21 1993-05-27 Karlheinz Dr Seifert Holzschutzmittel
US5601849A (en) * 1994-02-22 1997-02-11 Perma-Chink Systems, Inc. Preventative treatment of wood
DE19857944A1 (de) * 1998-12-16 2000-06-21 Remmers Bauchemie Gmbh Holzschutzmittel mit fungizider Wirksamkeit auf der Basis von p-Hydroxybenzoesäureestern sowie deren Salze
DE19935449B4 (de) * 1999-07-28 2004-03-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Holzschutzmittel, Verfahren zur Herstellung sowie dessen Verwendung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03037581A1 *

Also Published As

Publication number Publication date
DE10152728A1 (de) 2003-05-15
WO2003037581A1 (fr) 2003-05-08

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