WO2012062615A2 - Agent de liaison pour des matériaux à base de bois - Google Patents

Agent de liaison pour des matériaux à base de bois Download PDF

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Publication number
WO2012062615A2
WO2012062615A2 PCT/EP2011/069110 EP2011069110W WO2012062615A2 WO 2012062615 A2 WO2012062615 A2 WO 2012062615A2 EP 2011069110 W EP2011069110 W EP 2011069110W WO 2012062615 A2 WO2012062615 A2 WO 2012062615A2
Authority
WO
WIPO (PCT)
Prior art keywords
binder
wood
natural product
amide
dmdheu
Prior art date
Application number
PCT/EP2011/069110
Other languages
German (de)
English (en)
Other versions
WO2012062615A3 (fr
Inventor
Burkhard Standke
Tim VÖGTLIN
Karolin Bergh
Andrea Edinger
Christian Wassmer
Irene Lippert
Original Assignee
Evonik Degussa Gmbh
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 Evonik Degussa Gmbh filed Critical Evonik Degussa Gmbh
Publication of WO2012062615A2 publication Critical patent/WO2012062615A2/fr
Publication of WO2012062615A3 publication Critical patent/WO2012062615A3/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0025—Crosslinking or vulcanising agents; including accelerators
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3442—Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
    • C08K5/3445—Five-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • C08K5/544—Silicon-containing compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/30—Presence of wood
    • C09J2400/303—Presence of wood in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2489/00—Presence of protein

Definitions

  • the present invention relates to a binder for wood-based materials, a process for the production of wood-based materials using the binder, and wood-based materials which cross-linked by treatment at elevated temperature
  • Binder included.
  • the binder according to the invention is characterized in that it contains in its composition as a constituent a hydroxyl group-containing and / or amide group-containing natural product, for.
  • protein contains, for example, a protein of plant origin, in particular wheat protein, in aqueous solution or suspension and in combination with a crosslinking agent and with a catalytic ingredient.
  • the binder of the invention comprises an amino-functional silane, and in another embodiment, the binder consists of a hydroxyl group-containing and / or amide group-containing natural product, the crosslinking agent and a catalyst as reactive or crosslinkable components so that it does not contain silane ,
  • the composition is halogen-free, in particular
  • Solvents in particular free of volatile organic solvents, eg. for example, alcohol free to release VOC during pressing and
  • WO 2007/023008 describes a binder for wood particles containing at least one aminoalkylsilane, and an organic resin, in particular a formaldehyde resin or phenylmethane diisocyanate resin (PMDI resin) and / or a protein, lignin, tannin or tomato pulp.
  • an organic resin in particular a formaldehyde resin or phenylmethane diisocyanate resin (PMDI resin) and / or a protein, lignin, tannin or tomato pulp.
  • the object of the invention is to provide an alternative binder which releases substantially no organic solvents (VOCs) on crosslinking at elevated temperatures, imparts high strength to a wood-based material and is especially stable against moisture, and preferably low or no content Silane has.
  • VOCs organic solvents
  • Mg 2+ optionally and preferably Mg 2+ , in particular based on the natural substance to 0.5 to 3 wt .-%, preferably 0.8 to 1, 5 wt .-%, in particular as chloride-free salt, and optionally aminoalkylsilane, based on the natural product to 0 to 20 wt .-%, preferably 5 to 10 wt .-%, in a liquid composition, preferably in an aqueous composition, more preferably contains substantially no organic solvent.
  • compositions of the invention contain magnesium ions.
  • a content of magnesium ions advantageously brings about a water resistance of the crosslinked binder composition if its further reactive constituents consist of hydroxyl-containing and / or amide-containing natural substance, which is preferably protein, and DMDHEU (1, 3-dimethylol-4,5-).
  • mDMDHEU means modified DMDHEU according to 1, 3-dimethoxymethyl-4,5-dimethoxy-2-imidazolidinone, 1, 3-dimethoxymethyl-4-methoxy-5-hydroxy-2-imidazolidinone, 1-methoxymethyl 3-hydroxymethyl-4,5-dimethoxy-2-imidazolidinone, 1, 3-dihydroxymethyl-4,5-dimethoxy-2-imidazolidinone, 1-methoxymethyl-3-hydroxymethyl-4-methoxy-5-hydroxy-2-imidazolidinone .
  • Natural product which is preferably protein, aminoalkylsilane, DMDHEU and / or mDMDHEU and magnesium ions as reactive constituents.
  • a preferred aminoalkylsilane has the formula R 1 R 2 N (CHR) a Si (R) r (OR) 3 -r, where R, R 1 , R 2 , R 3 and R 4 independently of one another are a linear or branched d- to C20 alkyl group or aryl group, in particular a C 1 to C 8 alkyl group, methyl or ethyl, or is hydrogen, and wherein a is an integer from 1 to 10, preferably 3 and r is 0, 1 or 2. Particularly preferred are aqueous 3-Aminopropylsilanhydrolysate.
  • aqueous aminosilancocondensates as described in EP0716127 (Examples 1-8), EP0716128 (Examples 1-4), EP0953591 (Example 1), EP1031593 (Examples 1-5), EP0675128 (Examples 1 and 2) or aminosilane cocondensates, as described in EP0997469 (Examples 1 and 2) can be used.
  • the protein of the composition of the invention is preferably
  • Wheat protein containing, for example, an aqueous solution or suspension having a dry matter content of protein of from 20 to 60% by weight, preferably> 25 to
  • the binder composition according to the invention has the advantage that wood particles bound thereto can be permanently bound with a small amount of binder, in particular with a water resistance of the crosslinked
  • Binders are bound. In this case, the binder in the one
  • Embodiment has the advantage that it has no content of silanes, and so a solvent-free, especially formaldehyde-free binder is provided without the use of expensive silanes, while in the other embodiment, the binder according to the invention gives the advantages of the aminoalkylsilanes, especially in bonded, the wood-based material thus produced Wood particles impart a high water resistance of the composite, wherein a relatively small proportion of silanes in the binder of this embodiment is included.
  • the embodiments of the binder according to the invention have the advantage of giving a wood material a durable bond, which is particularly waterproof, and consist of inexpensive components, in particular no or a relatively small proportion of Aminoalkylsilan,
  • Aminoalkylsilancocondensates or their aqueous hydrolysates exhibit.
  • the binder according to the invention can be solvent-free
  • composition in particular an aqueous composition.
  • the binder in the embodiments without and with aminoalkylsilane has the advantage of being storage-stable in an aqueous composition.
  • the binder according to the invention in the usual industry in the corresponding ratios of 3% to 30%, based on the cellulose or lignocellulose material, such as wood chips or wood fibers, z. B. for pressboard, medium density or high density fiberboard (MDF, HDF) or so-called
  • Coated chipboard (OSB, oriented Strand board) are used, resulting in the silane-containing embodiment, a relatively low use of silane.
  • the binders are suitable for the production of wood-based materials
  • wood fiber boards, chipboards including OSB in the wood fibers and / or shavings are glued with binder, arranged to a fiber mat or scattered and thermally pressed. It can with a
  • roller presses or set working plate presses are treated, the dies can have temperatures of at least 200 ° C.
  • the binder according to the invention is suitable for curing at the temperatures which are maximally achieved in practice depending on the pressing time within the plate, z. B. for curing or crosslinking at least 140 to 150 ° C.
  • Table 1 shows the compositions of Comparative Examples and Table 2 shows the compositions of examples according to the invention.
  • the binder is in the examples aufgerakelt on a glass plate to a layer thickness of 24 pm, allowed to dry first at room temperature and then for 10 min at 150 ° C. treated in an oven to achieve crosslinking of the composition.
  • each coated glass plate was conditioned for about one week in a climatic cabinet at 25% relative humidity and 20 ° C.
  • the degree of dryness according to DIN 53150 again as a degree of dryness determined after storage. Thereafter, it was conditioned again, namely at 20 ° C and 95% relative humidity and then the degree of dryness again according to said DIN determined to determine the water resistance.
  • wt .-%, z. B. for DMDHEU, Mg 2+ and aminoalkylsilane are given as dry matter, optionally in addition as a mass of the aqueous solution used, and refer to the solids content of the composition of protein.
  • the protein suspension contained wheat protein with a solids content of 51%, available as a dark brown aqueous suspension.
  • the aqueous aminoalkylsilane solution used was Dynasylan® Hydrosil 1 151 (available from Evonik) with a solids content of approx. 20% used.
  • compositions containing Mg 2+ and aminoalkylsilane were first dissolved in MgC in the aqueous aminoalkylsilane solution and added as a mixture.
  • Mg 2+ MgC was added.
  • Mg 2+ has the form of a chloride-free magnesium salt, e.g. From the group containing magnesium sulfate, phosphate or an organic magnesium salt, e.g. B. magnesium citrate.
  • DMDHEU was added as a 75% solids aqueous solution.
  • the coating formed from the binder is considered cured.
  • Lower levels of dryness indicate stickiness of the layer and indicate insufficient crosslinking.
  • a decrease in the degree of drying during conditioning indicates the swelling of the layer by absorption of
  • Humidity and is regarded as an indication of insufficient water resistance of the crosslinked composition.
  • a sufficiently high degree of crosslinking of water resistance is assumed when the first degree of dryness, the
  • the 1. Drying level was after application of the composition to a
  • Drying cabinet according to DIN 53 150 determined, in which a higher number denotes a better degree of dryness.
  • the degree of drying after storage was after storage for 4 days at 20 ° C in an atmosphere with 25% rel. Humidity determined according to DIN 53 150. To determine the water resistance, the coated glass plates were in addition to storage for 4 days at 20 ° C in an atmosphere with 25% rel. Moisture for 24h at 25 ° C in 95% rel. Humidity stored.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

La présente invention concerne un agent de liaison pour des matériaux à base de bois, un procédé de fabrication de matériaux à base de bois à l'aide de l'agent de liaison, ainsi que des matériaux à base de bois, qui contiennent l'agent de liaison réticulé par un traitement à une température élevée.
PCT/EP2011/069110 2010-11-11 2011-10-31 Agent de liaison pour des matériaux à base de bois WO2012062615A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010043787.5 2010-11-11
DE102010043787A DE102010043787A1 (de) 2010-11-11 2010-11-11 Bindemittel für Holzwerkstoffe

Publications (2)

Publication Number Publication Date
WO2012062615A2 true WO2012062615A2 (fr) 2012-05-18
WO2012062615A3 WO2012062615A3 (fr) 2012-09-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/069110 WO2012062615A2 (fr) 2010-11-11 2011-10-31 Agent de liaison pour des matériaux à base de bois

Country Status (2)

Country Link
DE (1) DE102010043787A1 (fr)
WO (1) WO2012062615A2 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675128A1 (fr) 1994-03-31 1995-10-04 Hüls America Inc. Procédé de préparation de compositions
EP0716127A2 (fr) 1994-12-09 1996-06-12 Hüls Aktiengesellschaft Compositions aqueuses contenant des organopolysiloxanes, leur procédé de préparation et utilisation
EP0716128A2 (fr) 1994-12-09 1996-06-12 Hüls Aktiengesellschaft Compositions aqueuses contenant des organopolysiloxanes, leur procédé de préparation et utilisation
EP0953591A1 (fr) 1998-04-28 1999-11-03 Degussa-Hüls Aktiengesellschaft Compositions stables à base d'organosiloxanes solubles dans l'eau à fonctions amino et alcényle, procédé de leur préparation et utilization
EP0997469A2 (fr) 1998-10-27 2000-05-03 Degussa-Hüls Aktiengesellschaft Oligomères de siloxanes à fonction aminopropyl
EP1031593A2 (fr) 1999-02-27 2000-08-30 Degussa-Hüls Aktiengesellschaft Composition aqueuse contenant des composés aminofonctionels
WO2007023008A1 (fr) 2005-08-26 2007-03-01 Evonik Degussa Gmbh Liant contenant du silane pour materiaux composites

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300898A (en) * 1979-11-08 1981-11-17 Sun Chemical Corporation Compositions for treating textile fabrics
CZ278863B6 (en) * 1992-09-07 1994-07-13 Galena Medicinal preparations with n-methylated cyclic undecapeptides
ATE153033T1 (de) * 1993-03-02 1997-05-15 Pfleiderer Unternehmensverwalt Förmkörper, insbesondere in form einer faserplatte
DE4339381C2 (de) * 1993-11-18 1997-09-04 Inventa Ag Thermisch vernetzbares Einkomponenten-Schmelzkleber-System sowie dessen Verwendung
DE10335673B4 (de) * 2003-08-04 2007-01-18 Celanese Emulsions Gmbh Wässrige Dispersionsklebstoffe, Verfahren zu deren Herstellung und deren Verwendung
US20080292886A1 (en) * 2007-03-23 2008-11-27 Hercules Inc. Adhesive formulations containing urea additives, methods of forming plywood therewith, and plywood products made thereby

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675128A1 (fr) 1994-03-31 1995-10-04 Hüls America Inc. Procédé de préparation de compositions
EP0716127A2 (fr) 1994-12-09 1996-06-12 Hüls Aktiengesellschaft Compositions aqueuses contenant des organopolysiloxanes, leur procédé de préparation et utilisation
EP0716128A2 (fr) 1994-12-09 1996-06-12 Hüls Aktiengesellschaft Compositions aqueuses contenant des organopolysiloxanes, leur procédé de préparation et utilisation
EP0953591A1 (fr) 1998-04-28 1999-11-03 Degussa-Hüls Aktiengesellschaft Compositions stables à base d'organosiloxanes solubles dans l'eau à fonctions amino et alcényle, procédé de leur préparation et utilization
EP0997469A2 (fr) 1998-10-27 2000-05-03 Degussa-Hüls Aktiengesellschaft Oligomères de siloxanes à fonction aminopropyl
EP1031593A2 (fr) 1999-02-27 2000-08-30 Degussa-Hüls Aktiengesellschaft Composition aqueuse contenant des composés aminofonctionels
WO2007023008A1 (fr) 2005-08-26 2007-03-01 Evonik Degussa Gmbh Liant contenant du silane pour materiaux composites

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WOOD MODIFICATION: PROCESSES, PROPERTIES AND COMMERCIALISATION, October 2005 (2005-10-01)

Also Published As

Publication number Publication date
DE102010043787A1 (de) 2012-05-16
WO2012062615A3 (fr) 2012-09-07

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