EP1356005A1 - Agent de separation siloxane destine a la fabrication de materiaux derives du bois - Google Patents

Agent de separation siloxane destine a la fabrication de materiaux derives du bois

Info

Publication number
EP1356005A1
EP1356005A1 EP02704654A EP02704654A EP1356005A1 EP 1356005 A1 EP1356005 A1 EP 1356005A1 EP 02704654 A EP02704654 A EP 02704654A EP 02704654 A EP02704654 A EP 02704654A EP 1356005 A1 EP1356005 A1 EP 1356005A1
Authority
EP
European Patent Office
Prior art keywords
pressing
optionally
organopolysiloxane
mixture
polyisocyanate
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Withdrawn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
EP02704654A
Other languages
German (de)
English (en)
Inventor
Theodore Frick
Ernst-Martin Hoppe
Donald-Richard Larimer
Andreas Pielasch
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.)
Covestro Deutschland AG
Original Assignee
Bayer AG
Bayer MaterialScience 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 Bayer AG, Bayer MaterialScience AG filed Critical Bayer AG
Publication of EP1356005A1 publication Critical patent/EP1356005A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • 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
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/083—Agents for facilitating separation of moulds from articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6492—Lignin containing materials; Wood resins; Wood tars; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31652—Of asbestos
    • Y10T428/31663—As siloxane, silicone or silane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31989—Of wood

Definitions

  • Siloxane release agent for the manufacture of wood-based materials
  • the invention relates to a ner process for the production of wood-based materials by hot pressing of lignocellulose-containing materials glued with binder, in which a mixture of organosilicon compounds is applied to the surfaces of the pressing tool facing the material to be pressed.
  • polyisocyanates in particular polymeric diphenylmethane diisocyanate (pMDI) are mainly used as binders in the middle class. If pMDI is used in the top layer, problems arise when separating the wood material from the press tool or a disruptive layer of release agent and wood material residues builds up on the surfaces of the press tool, especially when working at higher press temperatures (EP-A 634 433, EP-A 1 038 898).
  • Aqueous emulsions of organopolysiloxane A), methylhydrogenpolysiloxane B), organopolysiloxane C), inhibitor D), emulsifiers and / or thickeners E) are preferably used. Additional components F) can be added to components A), B) and / or C) before the emulsification or after the emulsification. Suitable aggregates for achieving a particle size sufficient for the stability of the emulsion are e.g. High pressure homogenizers, colloid mills or similar
  • the release agents according to the invention can also be used in mixed binder systems (mixed gluing) made of pMDI and the aqueous solutions of condensation products of formaldehyde with urea and / or melamine and / or phenol which have been predominantly used in the wood-based panel industry.
  • a mixing ratio of 1:10 to 10: 1, preferably 1: 5 to 5: 1, can be maintained without the separation effect of the separation system deteriorating.
  • the organopolysiloxane A) having at least 2 unsaturated hydrocarbon groups in the sense of the invention is preferably a cyclic, linear or branched polysiloxane, the units of the general formula
  • R 1 monovalent, saturated, optionally substituted hydrocarbon radicals having up to 10 carbon atoms from the group of substituted and unsubstituted alkyl, aryl and arylalkyl radicals, where a and b are integers within the following limits: 0 ⁇ a ⁇ 3 and 0 ⁇ b ⁇ 3 and 0 ⁇ a + b ⁇ 4 and each individual R or R 1 within the molecule can be the same or different.
  • R 1 examples are methyl, ethyl, propyl, isopropyl, butyl, octyl, etc., cyclobutyl, cyclopentyl, cyclohexyl, etc., phenyl, tolyl, xylyl, naphthyl, etc. benzyl, phenylethyl, phenylpropyl.
  • some or all of the hydrogen atoms alkyl, aryl and arylalkyl radicals R 1 are substituted by fluorine and / or chlorine, bromine or iodine atoms and / or cyano radicals.
  • R 1 corresponds, for example, to chloromethyl, trifiuoropropyl, chlorophenyl, dibromophenyl, ⁇ -cyanoethyl, ⁇ -cyanopropyl or ⁇ -cyanopropyl radicals.
  • at least 90% of the radicals R 1 are preferably methyl.
  • a is 0 or 1.
  • the molar proportion of unsaturated radicals of type R can be chosen as desired.
  • the molar proportion of unsaturated radicals of the type R should preferably be 0.01 to 10 mmol / g, particularly preferably 0.05 to 1 mmol / g and very particularly preferably 0.1 to 0.7 mmol / g Component A).
  • the viscosity of component A) at 25 ° C. is preferably 10 to 100,000 mPas, particularly preferably 50 to 10,000 mPas.
  • the organopolysiloxanes described in DE-A 43 28 657 are used as component A), since these are branched, the ratio of the number of diorganosiloxy units (D units) to the number of branching points is on average 15 and 40, at least a triorganosiloxy unit (M unit) and a maximum of half of all M units are free of unsaturated residues, the remaining M units each carry only one unsaturated residue, and the content of unsaturated residues is 0.1 to 1 mmol / g.
  • branching points of component A) are preferably monoorganosiloxy units, ie, trifunctional siloxy units (T units), but some of these can also be replaced by tetrafunctional siloxy units (SiO 4/2 units, Q units).
  • the end groups of the branched organopolysiloxane that are free of unsaturated residues perform the function of an internal plasticizer.
  • the flexibility of the crosslinked film can be controlled via the number of end groups (M units) free of unsaturated residues.
  • Examples of the preferred component A) are compounds of the formulas T 5 D 200 M vi 5 M 2 , T 7 D 28 oM Vi 5 M 4 , T 6 D 180 D vi 2 M vi 4 M 4 and or T 8 D 250 M vi 7 M 3 .
  • Branched, at least 2 unsaturated hydrocarbon groups containing organopolysiloxanes A) can be prepared by conventional methods, such as. B. by hydrolysis of chlorosilanes and subsequent polymerization with low molecular weight cyclic diorganopolysiloxanes.
  • the methylhydrogenpolysiloxane B) preferably contains units of the general formula
  • R 2 monovalent, saturated, optionally substituted hydrocarbon radicals having up to 10 carbon atoms from the group of substituted and unsubstituted alkyl, aryl, arylalkyl and / or C 2 -C 8 alkenyl radicals, where
  • c and d are integers with 0 ⁇ d ⁇ 3 and 0 ⁇ c ⁇ 2 and 0 ⁇ c + d ⁇ 4, preferably 0 ⁇ c ⁇ 1.
  • the methylhydrogenpolysiloxanes B) are preferably linear. At least half of the D units preferably have hydrogen atoms (H (CH 3 ) SiO groups) bonded directly to silicon. The number of groups having hydrogen atoms bonded directly to silicon is preferably between 70 and 85% of the difunctional units.
  • the molar proportion of hydrogen atoms directly bonded to a silicon atom in component B) can - in the context of the abovementioned. structural restrictions - can be chosen arbitrarily.
  • the molar proportion of hydrogen atoms bonded directly to a silicon atom is preferably 0.01 to 17 mmol, particularly preferably 0.1 to 17 mmol and very particularly preferably 1 to 17 mmol per gram of component B).
  • Components A) and B) are preferably present in a quantity ratio such that the molar ratio of hydrogen atoms (SiH) in component B) bonded directly to a silicon atom to the unsaturated radicals (Si-vinyl) in component A) is 0, 05 to 20, particularly preferably 0.5 to 10 and very particularly preferably 1 to 3.
  • the organopolysiloxane C) in the sense of the present invention is preferably a polysiloxane, the units of the general formula
  • R 1 are monovalent, saturated, optionally hydrocarbon radicals substituted with up to 10 carbon atoms from the group of substituted and unsubstituted alkyl, aryl and arylalkyl radicals which can be the same or different within the molecule and e are integers between 0 and 3 can accept.
  • Component C) is preferably a linear polydimethylsiloxane end-terminated with trimethylsiloxy groups, as is sold, for example, by Bayer AG under the name Baysilone oils M.
  • the use of such Baysilone ® oils M with a viscosity between 50 mmV 1 and 5000 mmV is particularly preferred.
  • the term inhibitor D) in the sense of the invention includes all inhibitors known according to the prior art, such as. B. maleic acid and its derivatives, amines, alkyl isocyanurates and acetylenically unsaturated alcohols, in which the OH group is bound to a carbon atom adjacent to the CC triple bond, as z. B. are described in more detail in US-A 3,445,420.
  • Component D) is preferably 2-methyl-3-butyn-2-ol, 1-ethynylcyclohexanol and / or ( ⁇ ) 3-phenyl-1-butyn-3-ol.
  • the amount of component D) in the mixture is preferably 0.0001 to
  • Component E basically includes all emulsifiers and / or thickeners suitable for the formation and stabilization of emulsions (see e.g. Mc Cutcheon's Detergents
  • Emulsiliers International Edition.
  • the emulsions are used to produce release coatings for the production of wood-based materials used in the food sector, preference is given to those emulsifiers which are mentioned in FDA Regulations 176,170 "Components of Paper and Paperboard”.
  • Emulsifiers and thickeners are particularly preferred, which are mentioned in recommendation XV of the Federal Health Office (BGA) if the wood-based materials are intended for use in transport boxes for food or in truck bodies.
  • emulsifiers and thickeners E are: C 8 -C 22 -alkyldimethyl-benzylammonium chloride, preferably in an amount of at most 1.5% by weight, sodium lauryl sulfate, preferably in an amount of at most 0.5% by weight, Polyethylene glycol ethers of monohydric aliphatic alcohols C 2 -C 20 and C 2 -C 9 A1 alkyl phenols, polyethylene glycol esters of natural fatty acids C 8 -C 22 and vegetable oils, and / or partially acetylated polyvinyl alcohol with less than 20% acetyl groups and a K Value of over 40.
  • Emulsifiers falling under BGA recommendation XV are also carboxymethyl cellulose, digested starch, alginates, casein, hard paraffin and wax dispersions, dispersions based on copolymers of acrylic and methacrylic acid esters, butadiene and styrene, insofar as they comply with recommendation XIV and / or polyalcohol (viscosity of the 4% aqueous solution at 20 ° C at least 4 cP), according to recommendation XIV).
  • Polyvinyl alcohol in combination with sodium lauryl sulfate or alkyldimethylbenzylammonium chloride is particularly preferred.
  • Additives and auxiliary substances F) in the sense of the invention are e.g. B. polysiloxane resins, which are composed of building blocks of the general formulas (I) and (II), fillers, such as diatomaceous earths, finely divided quartz flours, amorphous silicas, pyrogenic and or precipitated silicas with a BET surface area of 50 to 500 m 2 / g , Such fillers can be surface-modified, for example by reaction with organosilicon compounds such as hexamethyldisilazane or 1,3-divinyl-1,3,1-tetramethyldisilazane. The use of fillers is particularly advantageous when the release agent is applied by rolling rather than spraying.
  • Additives and auxiliaries F) in the sense of the invention are also leveling agents which help improve the wetting of the substrate with the emulsion.
  • polyether siloxanes silicon surfactants and / or fluorosurfactants
  • Germ inhibitors e.g. formaldehyde-releasing products are also to be included in the additives and auxiliaries F).
  • the amount of component F) or the sum of components F) is preferably less than 5% by weight, based on the total mixture.
  • Aqueous emulsions with the following constituents are preferably used according to the invention: as component A): T 8 D 250 M vi 7 M 3 as methylhydrogenpolysiloxane B): M 2 D H 30 D ⁇ 0 as organopolysiloxane C): polydimethylsiloxane with a viscosity of 1000 mm 2 / s as inhibitor D): ethinylcyclohexanol as emulsifier and / or Thickener E): Polyvinyl alcohol, optionally in combination with sodium lauryl sulfate as additives and / or auxiliaries F): germ-inhibiting agents and or polyether siloxane
  • the wood-based materials are produced by hot pressing of lignocellulose-containing materials glued with binder containing polyisocyanate.
  • a release agent according to the invention is applied to the press plates or press belts on the surface facing the material to be pressed, for example with the aid of a spraying device or a roller application device.
  • the release agent according to the invention can be applied undiluted, ie generally as an emulsion with a water content of preferably 50 to 60% by weight, particularly preferably 55 to 60% by weight, but is preferred in a ratio of 1:50 diluted to 1: 100 with water. With suitable preconditioning of the press belts, higher dilutions are also possible, for example 1: 150 to 1: 250.
  • the water content in the release agents according to the invention is preferably 50 to 99.85% by weight, particularly preferably 55 to 99.85% by weight.
  • the release agent is then cured at a temperature of 150 ° C to 240 ° C, preferably 180 to 240 ° C.
  • a higher concentration of release agent undiluted to 1:50 in water
  • the release agent is preferably sprayed continuously onto the hot press plates or press belts. Examples
  • Release emulsion III corresponds to EP-A 819 735
  • Isocyanate IN pMDI with a ⁇ CO content of approx. 31.5% by weight (Desmodur ® 44V20 L, Bayer AG)
  • coating layer chips which consisted of a mixture of coniferous wood and deciduous wood and had a moisture content of about 15 wt .-%, were glued with 320 parts by weight of isocyanate IV (Desmodur ® 44V20 L).
  • a 300 x 300 mm size was created on a 2 mm thick steel press plate and covered with a second steel press plate.
  • the two press plates were previously pretreated with the release agent to be tested.
  • the separating emulsion was diluted to the specified dilution with water, sprayed onto the metal sheets in a cloister, and then flashed off at 140 ° C. for two minutes for curing. This process was repeated three times.
  • the molding was pressed at the specified pressing temperature for 100 seconds.
  • the separation behavior after each demoulding was recorded and evaluated as follows:
  • the separating emulsion I shows an excellent separating effect, which is retained even at higher pressing temperatures and does not form any deposits on the pressing tool.
  • Release emulsion II shows no sufficient release effect, neither at 190 ° C nor at 220 ° C.
  • Release emulsion I is effective after a single pretreatment of the sheets over several demolding processes, without the sheets having to be sprayed again after each removal. This offers the manufacturer a certain level of security in the event that the release agent spraying fails during production.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

L'invention concerne un procédé de fabrication de matériaux dérivés du bois par pressage à chaud de matériaux contenant de la lignocellulose, encollés au moyen de liants. Selon ledit procédé, un mélange de composés silicium organiques est appliqué sur les surfaces de l'outil de pressage orientées vers le matériau de pressage.
EP02704654A 2001-01-22 2002-01-15 Agent de separation siloxane destine a la fabrication de materiaux derives du bois Withdrawn EP1356005A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10102689 2001-01-22
DE2001102689 DE10102689A1 (de) 2001-01-22 2001-01-22 Siloxan-Trennmittel für die Holzwerkstoff-Herstellung
PCT/EP2002/000323 WO2002057380A1 (fr) 2001-01-22 2002-01-15 Agent de separation siloxane destine a la fabrication de materiaux derives du bois

Publications (1)

Publication Number Publication Date
EP1356005A1 true EP1356005A1 (fr) 2003-10-29

Family

ID=7671317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02704654A Withdrawn EP1356005A1 (fr) 2001-01-22 2002-01-15 Agent de separation siloxane destine a la fabrication de materiaux derives du bois

Country Status (6)

Country Link
US (1) US6730723B2 (fr)
EP (1) EP1356005A1 (fr)
JP (1) JP4145653B2 (fr)
BR (1) BR0206602A (fr)
DE (1) DE10102689A1 (fr)
WO (1) WO2002057380A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2292396A3 (fr) * 2003-02-24 2013-04-03 Jeld-Wen Inc. Composites lignocellulosiques à couche mince dotés d'une résistance accrue à l'humidité et leurs procédés de fabrication
EP2063696B1 (fr) 2007-11-23 2012-08-22 MiCryon Technik GmbH Procédé destiné à refroidir des composants hautement chargés thermiquement et dispositif destiné à l'exécution du procédé
DE102007056783A1 (de) 2007-11-23 2009-05-28 Micryon Technik Gmbh Verfahren zum Kühlen thermisch hochbelasteter Bauelemente und Vorrichtung zur Durchführung des Verfahrens
DE202007016535U1 (de) 2007-11-23 2008-10-16 Hellwig, Udo, Prof. Dr.-Ing. Einrichtung zum Kühlen thermisch hochbelasteter Bauelemente
AT509199B1 (de) * 2010-02-22 2011-07-15 Mikowitsch Herbert Verfahren zur herstellung einer pressstoffplatte
DE102010031376A1 (de) 2010-07-15 2012-01-19 Evonik Goldschmidt Gmbh Verfahren zur Herstellung von Formkörpern aus Cellulose enthaltenden Materialien
EP2616230B1 (fr) 2010-09-15 2017-12-13 Jeld-Wen, Inc. Procédé et système pour la formation d'un matériau composite mince à fibres résistant à l'humidité
CN102407553A (zh) * 2010-09-21 2012-04-11 大亚科技股份有限公司 增白型e1级地板基材用高密度纤维板的制造方法
KR102014688B1 (ko) 2011-09-21 2019-08-27 도널드선 컴파니 인코포레이티드 수지상 알데히드 조성물과 가교된 중합체로 제조된 미세 섬유
CN105143527B (zh) 2013-03-09 2019-04-16 唐纳森公司 由反应性添加剂制备的细纤维
US20210122923A1 (en) * 2019-10-28 2021-04-29 Polymer Synergies, LLC Bio-Based Hydrophobic Formulations For Use in Engineered Wood Composites

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NL129346C (fr) * 1966-06-23
EP0176640B1 (fr) * 1984-10-05 1989-07-12 Arco Chemical Technology, Inc. Préparation de compositions moulées de lignocellulose-isocyanate, utilisant comme agent de séparation de l'acide polysiloxane-isocyanate-carboxylique ou un sel correspondant
DE3522659C1 (de) * 1985-06-25 1987-02-19 Goldschmidt Ag Th Verfahren zur Herstellung von Spanplatten
US5179143A (en) * 1988-07-26 1993-01-12 Bayer Aktiengesellschaft Process for the preparation of compression molded materials
US5302330A (en) * 1993-06-08 1994-04-12 Harold Umansky Method for the manufacture of waferboard
DE4400465A1 (de) 1993-07-12 1995-01-19 Bayer Ag Neue Mischungen und ihre Verwendung als Bindemittel zur Herstellung von Verbundmaterialien
DE4328657A1 (de) 1993-08-26 1995-03-02 Bayer Ag Organopolysiloxanmischung zur Herstellung von klebstoffabweisenden Organopolysiloxanfilmen
DE19628447A1 (de) * 1996-07-15 1998-01-22 Bayer Ag Wäßrige Emulsionen, ein Verfahren zur Herstellung und deren Verwendung
WO2000022021A1 (fr) 1998-10-13 2000-04-20 Mitsui Chemicals, Incorporated Composition de liant et procede de fabrication d'un panneau par utilisation de cette composition de liant

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Title
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Also Published As

Publication number Publication date
US20030073799A1 (en) 2003-04-17
JP2004523384A (ja) 2004-08-05
BR0206602A (pt) 2004-03-02
DE10102689A1 (de) 2002-08-01
US6730723B2 (en) 2004-05-04
WO2002057380A1 (fr) 2002-07-25
JP4145653B2 (ja) 2008-09-03

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