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EP2546038A1 - Procédé destiné à la réduction de l'émission de composés organiques liquides à partir de matières dérivées du bois - Google Patents

Procédé destiné à la réduction de l'émission de composés organiques liquides à partir de matières dérivées du bois Download PDF

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Publication number
EP2546038A1
EP2546038A1 EP11005690A EP11005690A EP2546038A1 EP 2546038 A1 EP2546038 A1 EP 2546038A1 EP 11005690 A EP11005690 A EP 11005690A EP 11005690 A EP11005690 A EP 11005690A EP 2546038 A1 EP2546038 A1 EP 2546038A1
Authority
EP
European Patent Office
Prior art keywords
wood
additive
lignocellulose
organic compounds
acid
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.)
Granted
Application number
EP11005690A
Other languages
German (de)
English (en)
Other versions
EP2546038B1 (fr
Inventor
Joachim Prof.Dr. Hasch
Julia Dr. Borowka
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.)
Kronotec AG
Original Assignee
Kronotec AG
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 Kronotec AG filed Critical Kronotec AG
Priority to EP11005690.0A priority Critical patent/EP2546038B1/fr
Priority to PL11005690T priority patent/PL2546038T3/pl
Priority to ES11005690.0T priority patent/ES2537642T3/es
Publication of EP2546038A1 publication Critical patent/EP2546038A1/fr
Application granted granted Critical
Publication of EP2546038B1 publication Critical patent/EP2546038B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/003—Pretreatment of moulding material for reducing formaldehyde gas emission

Definitions

  • Typical conversion products that occur inter alia during storage and processing of the wood or crushed products include pentanal and hexanal.
  • Particularly critical compounds in the heterogeneous group of VOC and WOC are the saturated and unsaturated aldehydes. These are not only toxic, but also carcinogenic in part. Furthermore, they are classified as critical by the olfactory aspect.
  • the aldehydes are formed, inter alia, in the production of wood-based materials, as shown above, and are released in particular by OSB plates delayed by fragmentation of unsaturated fatty acids and due to the use of aldehyde-containing adhesives.
  • OSB panels in the structural area this is a great disadvantage, since in this application, the OSB panels have no emission-reducing coating and in large quantities, especially as the area of the plate based on the total cubic meters of the room or building is installed.
  • the object of the present invention is achieved in that certain additives are added at certain times in the inventive method for producing or processing the wood materials from lignocellulose.
  • These additives are alcohols, optionally in combination with a catalytically effective amount of acid and / or certain antioxidants.
  • the carrier material may be transparent or formed with a decor.
  • the support materials may be conventional, so-called overlay products or, for example, 100% cellulose paper, as used in the field of the production of wood-based materials, such as panels.
  • the additive may be in the form of an aqueous solution or as a powder mixture directly after the pressing operation, e.g. be applied by spraying by means of nozzles on one or both sides of the produced wood material.
  • an entry can be made by rolling.
  • the wood-based materials are those made of wood chips, wood strands or wood fibers as lignocellulose-containing crushed products.
  • the wood material is an OSB board.
  • the wood-based materials may be further coated with known layers, such as a lacquer layer, decorative layer or wearing layer.
  • the additives may also or only be present in these layers. That is, the carrier material may be formed as a decorative layer, lacquer layer, wear layer or according to sub-layers.
  • the cervical spine is solid wood and the additives are applied to the cervical spine by known methods.
  • Fats and oils are esters of polyhydric alcohols, usually glycerol, with saturated and unsaturated fatty acids. Due to the oxidative degradation of these fats and fatty acids in the pressing process at high temperatures arise z.
  • an antioxidant can be used.
  • Antioxidants allow trapping of radicals that z. B. at high temperatures or light. At high temperatures or light z.
  • hydroxyl radicals that have the ability to rapidly oxidize other substances. This easily forms VOCs and VVOCs from the natural components in the wood.
  • the antioxidants especially the antioxidants selected from ascorbic acid, vitamin E or butylhydroxytoluene (BHT), have the ability to trap such radicals and thus prevent the formation of VOCs or VVOCs from the constituents of the wood. According to the invention, these antioxidants are incorporated or applied in or on the carrier material.
  • the additives are added in an amount of 0.5 to 5% by weight of solid solid in terms of dry wood.
  • Lignocelluloses are understood to mean lignocellulose-containing materials, such as wood.
  • the resulting comminution products of lignocellulose include, in particular, wood strands, wood chips, wood fibers as well as wood veneers.
  • the present application is directed to the use of a composition containing an alcohol as defined herein optionally in combination with catalytically effective amounts of an acid and / or an antioxidant as defined herein for reducing the emission of VOC and VVOC, respectively , in particular saturated and unsaturated aldehydes, in the production and use of wood materials of lignocellulose.
  • This use is characterized in that the additive during the manufacturing process of the wood material is registered or applied.
  • the additive is preferably applied or applied in this case, as stated above, as is preferred with the aid of a carrier material.
  • the additives used according to the invention are particularly advantageous in terms of a longer-term effect for suppressing the emissions of VOC or VVOC, since the additives present in the carrier material or in the outer layer also avoid the formation and emission of VOC or VVOC in the longer term.
  • thermo-extraction method For a qualitative and comparative study of the emission potential of structurally similar materials, the thermo-extraction method is suitable.
  • thermo-extraction In order to achieve always the same and thus reproducible conditions, a steel sample holder was used which leaves a potentially emitting sample surface of about 7.1 cm 2 .
  • Thermo-extractor sample holder and the sample dimensions are shown.
  • the conditions for the thermo-extraction are summarized in Table 2. 11 air volumes were sampled 10 minutes after the samples were placed in the thermo-extractor. The results are expressed as the substance quantity in relation to the air sampling volume ( ⁇ g m -3 ).
  • Table 3 Results ⁇ g / m 3 Sample 0 Sample A Sample B aldehydes 681 153 42 Saturated aldehydes 651 140 31 Unsaturated aldehydes 18 3 1 hexanal 577 124 26 2-heptenal 12 3 1 2-octenal 6 0 0

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
EP11005690.0A 2011-07-12 2011-07-12 Procédé destiné à la réduction de l'émission de composés organiques liquides à partir de matières dérivées du bois Active EP2546038B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11005690.0A EP2546038B1 (fr) 2011-07-12 2011-07-12 Procédé destiné à la réduction de l'émission de composés organiques liquides à partir de matières dérivées du bois
PL11005690T PL2546038T3 (pl) 2011-07-12 2011-07-12 Sposób zmniejszania emisji lotnych związków organicznych z materiałów drewnopodobnych
ES11005690.0T ES2537642T3 (es) 2011-07-12 2011-07-12 Procedimiento para reducir la emisión de compuestos orgánicos volátiles de derivados de la madera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11005690.0A EP2546038B1 (fr) 2011-07-12 2011-07-12 Procédé destiné à la réduction de l'émission de composés organiques liquides à partir de matières dérivées du bois

Publications (2)

Publication Number Publication Date
EP2546038A1 true EP2546038A1 (fr) 2013-01-16
EP2546038B1 EP2546038B1 (fr) 2015-04-01

Family

ID=45002182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11005690.0A Active EP2546038B1 (fr) 2011-07-12 2011-07-12 Procédé destiné à la réduction de l'émission de composés organiques liquides à partir de matières dérivées du bois

Country Status (3)

Country Link
EP (1) EP2546038B1 (fr)
ES (1) ES2537642T3 (fr)
PL (1) PL2546038T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4663364A1 (fr) * 2024-06-13 2025-12-17 Edelmann solution in wood Procédé de fabrication de matériaux dérivés du bois, matériaux dérivés du bois et liant pour leur fabrication

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1182825A (en) * 1966-05-27 1970-03-04 Goldschmidt Ag Th A Barrier or Primer Sheet
US5160503A (en) * 1989-11-13 1992-11-03 West Point Pepperell Water-soluble blends of active methylene compounds and polyhydric alcohols as formaldehyde scavengers
WO2006032267A1 (fr) * 2004-09-21 2006-03-30 Institut für Holztechnologie Dresden gGmbH Bois ou materiau en bois et procede de fabrication associe
WO2006117163A1 (fr) * 2005-05-02 2006-11-09 Basf Aktiengesellschaft Procede de traitement de surfaces de bois
EP1852231A2 (fr) * 2006-05-02 2007-11-07 Kronotec Ag Procédé de fabrication de matériaux dérivés du bois dotés d'une faible émission en composés organiques volatiles, matériaux dérivés du bois ainsi disponibles tout comme utilisation d'additifs définis pour éviter la libération de composés organiques volatiles en matériaux dérivés du bois et produits de concassage du bois en lignocellulose
EP2181818A2 (fr) * 2008-10-28 2010-05-05 IHD Institut für Holztechnologie Dresden gGmbH Procédé de fabrication de matières premières en fibres de bois et matières premières en fibres de bois ayant des émissions réduites en VOC volatiles
WO2010144969A1 (fr) * 2009-06-19 2010-12-23 Eze Board Australia Pty Ltd Production de perlite et carton pour panneaux composite à base de fibres

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1182825A (en) * 1966-05-27 1970-03-04 Goldschmidt Ag Th A Barrier or Primer Sheet
US5160503A (en) * 1989-11-13 1992-11-03 West Point Pepperell Water-soluble blends of active methylene compounds and polyhydric alcohols as formaldehyde scavengers
WO2006032267A1 (fr) * 2004-09-21 2006-03-30 Institut für Holztechnologie Dresden gGmbH Bois ou materiau en bois et procede de fabrication associe
WO2006117163A1 (fr) * 2005-05-02 2006-11-09 Basf Aktiengesellschaft Procede de traitement de surfaces de bois
EP1852231A2 (fr) * 2006-05-02 2007-11-07 Kronotec Ag Procédé de fabrication de matériaux dérivés du bois dotés d'une faible émission en composés organiques volatiles, matériaux dérivés du bois ainsi disponibles tout comme utilisation d'additifs définis pour éviter la libération de composés organiques volatiles en matériaux dérivés du bois et produits de concassage du bois en lignocellulose
EP2181818A2 (fr) * 2008-10-28 2010-05-05 IHD Institut für Holztechnologie Dresden gGmbH Procédé de fabrication de matières premières en fibres de bois et matières premières en fibres de bois ayant des émissions réduites en VOC volatiles
WO2010144969A1 (fr) * 2009-06-19 2010-12-23 Eze Board Australia Pty Ltd Production de perlite et carton pour panneaux composite à base de fibres

Also Published As

Publication number Publication date
PL2546038T3 (pl) 2015-08-31
EP2546038B1 (fr) 2015-04-01
ES2537642T3 (es) 2015-06-10

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