WO2013144226A1 - Colle uf renforcée avec de la mélamine, renfermant jusqu'à 0,9 % de mélamine, pour la production de panneaux de fibres de densité moyenne - Google Patents

Colle uf renforcée avec de la mélamine, renfermant jusqu'à 0,9 % de mélamine, pour la production de panneaux de fibres de densité moyenne Download PDF

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Publication number
WO2013144226A1
WO2013144226A1 PCT/EP2013/056563 EP2013056563W WO2013144226A1 WO 2013144226 A1 WO2013144226 A1 WO 2013144226A1 EP 2013056563 W EP2013056563 W EP 2013056563W WO 2013144226 A1 WO2013144226 A1 WO 2013144226A1
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Prior art keywords
melamine
urea
formaldehyde
formaldehyde resins
preparation
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PCT/EP2013/056563
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German (de)
English (en)
Inventor
Michael Finkenauer
Konrad Roschmann
Ralph Lunkwitz
Stephan WEINKÖTZ
Original Assignee
Basf Se
Basf Schweiz Ag
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Filing date
Publication date
Application filed by Basf Se, Basf Schweiz Ag filed Critical Basf Se
Priority to PL409754A priority Critical patent/PL233957B1/pl
Priority to DE112013001771.7T priority patent/DE112013001771A5/de
Publication of WO2013144226A1 publication Critical patent/WO2013144226A1/fr

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    • 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
    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/04—Layered products comprising a layer of synthetic resin as impregnant, bonding, or embedding substance
    • 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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas
    • 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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
    • C08G12/32—Melamines
    • 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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
    • C08G12/36—Ureas; Thioureas
    • C08G12/38—Ureas; Thioureas and melamines
    • 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
    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
    • C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
    • C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
    • C08G14/10—Melamines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08L61/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • 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
    • C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined

Definitions

  • step a) a mixture of Amino compound (urea or melamine) prepared with aqueous formaldehyde solution, then in step b) added a catalyst and in step c) in a continuously operated reactor, eg a tubular reactor, is condensed.
  • step d) then another amino compound, the same as in step a) or another, can be added.
  • step a) In order to produce MUF glues with a melamine content of up to 0.9% by weight in this process, the amino compound in step a) must be urea and the amino component in step d) must be melamine.
  • the addition of melamine at a late stage in the production of MUF sizing is disadvantageous since such sizing cures more slowly.
  • the negative effect of subsequently added melamine is known, for example, from G. E. Troughton, S. Chow, Holzaba, 1975, pages 214 to 217.
  • the production of MUF glues with up to 0.9 wt .-% melamine, in which the melamine is already present during the condensation phase (step c) is not possible by this method.
  • MUF resins having a low formaldehyde emission rate which contain 0.15 to 40% by weight of melamine and a molar ratio of formaldehyde to urea of 1.3: 1 to 0.9 Have: 1. However, for a substantial reduction in formaldehyde emission, at least 4% melamine is needed.
  • the preparation of the MUF resins is carried out in a process consisting of a 1st stage with methylolation of urea and formaldehyde and possibly melamine in an alkaline medium, a second stage with condensation at a pH of 6 to 8.3 and Addition of urea and melamine and a 3rd stage with a scavenger, z. B. urea.
  • a disadvantage of this process is the amount of melamine for substantially reducing the formaldehyde emission.
  • a new and improved process for preparing melamine-urea-formaldehyde resins having up to 0.9% melamine by reaction has been developed a) urea containing 0 to 10 wt .-% of one or more compounds A, formaldehyde and melamine in the presence of a base at a pH of 7.5 to 1 1, a temperature of 20 to 120 ° C and a Pressure from 0.1 to 10 bar,
  • urea / urea mixture containing 0 to 10 wt .-% of one or more compounds A (hereinafter referred to as "urea / urea mixture"), formaldehyde and melamine in any order or and at a pH of 7.5 to 1 1, preferably 8 to 10.5, more preferably 8.5 to 10 implement. Adjustment of the pH may be accomplished by adding base at one or more times during this reaction. As a rule, the pH is adjusted at the beginning of the reaction and readjusted if necessary by addition of base. Urea / urea mixture and formaldehyde can also be used as formaldehyde-urea / urea mixture precondensate.
  • formaldehyde can be initially charged with a base in a) and then urea / urea mixture can be added.
  • a mixture of formaldehyde and a base can be added to the initially charged urea / urea mixture.
  • the melamine can be introduced into the reaction mixture at any time.
  • the reaction in a) is generally carried out at temperatures of 20 to 120 ° C, preferably 20 to 1 10 ° C, more preferably 20 to 95 ° C, in particular 60 to 90 ° C and a pressure of 0.1 to 10 bar , preferably 0.5 to 5 bar, more preferably 0.9 to 1, 5 bar, in particular at atmospheric pressure (atmospheric pressure).
  • the formaldehyde, the base or the mixture of formaldehyde and base is heated to the aforementioned temperatures before combining with urea / urea mixture and melamine.
  • the viscosity of the reaction mixture which is usually betweenl 0 and 5000 Pas, preferably between 100 and 2000 mPas, more preferably between see see 200 and 800 mPas, measured on an Anton Pair of viscometers MCR 51 with a plate-cone measuring system at room temperature (Thomas Mezger, The Rheology Manual, Hannover, Vincentz, 2000, page 203 and DIN EN ISO 3219: 1994-10)
  • one or more portions of urea / urea mixture can be added during b) at any given time, the amount of urea / urea mixture added during b) generally being selected such that, based on the total amount of urea / urea mixture to 20 wt .-%, preferably 0 to 15 wt .-%, particularly preferably 0 to 10 wt .-% is.
  • the diluent may be partially removed, such as water, in vacuo, followed by an additional addition of urea / urea mixture at the abovementioned temperatures and pressures.
  • the addition may be carried out by mixing the urea and, if appropriate, the compound A in solid form or as a solution under the reaction mixture or else the resin in a urea solution, which optionally contains compound A, stirred.
  • the mixing of the two components can be carried out at room temperature or in such a way that the still up to 80 ° C warm resin is mixed with the urea.
  • the mixture according to the invention can be cooled to room temperature.
  • the pH of the cooled mixture is preferably adjusted to a pH between 8 and 10.
  • the process according to the invention is usually carried out in such a way that the solids content of the MUF resins is 50 to 70% by weight, based on the aqueous resin mixture.
  • step a) in the first reactor, step b) in the second and step c) can be carried out in the third reactor.
  • the molar ratio of formaldehyde to the total amount of urea and optionally compound A in a) is generally from 1.5: 1 to 4: 1, preferably from 2: 1 to 3: 1, more preferably from 2: 1 to 2.6: 1
  • the molar ratio of formaldehyde to melamine in a) is generally 3000: 1 to 50: 1, preferably 2500: 1 to 100: 1, particularly preferably 2250: 1 to 150: 1.
  • the molar ratio of formaldehyde to Nh groups [F: (2xU + 3xM)] in a) is generally 0.8: 1 to 2: 1, preferably 1: 1 to 1, 5: 1, particularly preferably 1: 1 to 1, 3: 1.
  • the connection A is counted as U.
  • the amount of optional addition of urea / urea mixture in b) can be made by one, two or more additions.
  • the amount of urea / urea mixture is usually chosen so that a molar ratio of formaldehyde to total amount of urea and compound A of 1, 4: 1 to 4: 1, preferably 1, 8: 1 to 3: 1, especially preferably 1, 8: 1 to 2.6: 1.
  • the amount of addition of urea / urea mixture in c) can be made by one, two or more additions.
  • the amount of urea / urea mixture is usually chosen so that a molar ratio of formaldehyde to total amount of urea and compound A of 0.7: 1 to 1, 5: 1, preferably 0.75: 1 to 1, 2 : 1, more preferably 0.8: 1 to 1, 05: 1, most preferably 0.8: 1 to 0.89: 1 results.
  • Suitable formaldehyde is paraformaldehyde or aqueous 5 to 70 wt .-% strength formaldehyde solutions, such as aqueous solutions, preferably 30 to 60 wt .-% aqueous solutions, particularly preferably as 45 to 55 wt .-% aqueous solutions.
  • Urea is used either in solid form or as an aqueous solution, preferably as an aqueous solution, the concentration of urea in the solution being between 30 and 85%, preferably between 40 and 80%, particularly preferably between 50 and 75%.
  • the formaldehyde (F) and the urea (U) can also be used at least partially in the form of aqueous formaldehyde-urea solutions and / or aqueous formaldehyde-urea precondensate solutions.
  • the pH of the aqueous formaldehyde solution, aqueous formaldehyde-urea solution and / or aqueous formaldehyde-urea precondensate solution is advantageously from 4 to 5.5, in particular from 4.5 to 5.
  • the concentration of the aqueous solution of formaldehyde and urea is advantageously from 50 to 80% by weight and the weight ratio of urea to formaldehyde is preferably between 10:90 and 70:30, in particular between 20:80 and 55:45, particularly preferably between 30: 70 and 50:50.
  • This solution may contain small amounts of addition and low molecular weight condensation products of urea and formaldehyde.
  • an aqueous formaldehyde-urea precondensate solution prepared by reacting urea and formaldehyde at a pH greater than 7 can be used.
  • the weight ratio of urea to formaldehyde is advantageously between 10:90 and 70:30, preferably between 20:80 and 55:45, in particular between 30:70 and 50:50.
  • the concentration of the aqueous formaldehyde-urea precondensate solution is preferably 50 to 80%.
  • the urea can, regardless of whether it is used as a solid urea, urea solution, as formaldehyde-urea solution or as a formaldehyde-urea precondensate solution, partially replaced by compounds A, which can react with formaldehyde.
  • Suitable compounds A are modified ureas such as ethyleneurea, ethylene diurea or dipropylene triurea, or guanamines such as benzoguanamine or amides such as caprolactam in amounts of 0 to 10% by weight, preferably 0 to 8% by weight, particularly preferably 0 to 5% by weight. % based on the total amount of urea.
  • Suitable melamine melamine powder or liquid or powdered melamine-formaldehyde resins (MF resins) or melamine-urea-formaldehyde resins (MUF resins) are preferably MF and MUF resins, more preferably powdery MF and MUF resins , very particularly preferably powdery MF resins. If MF or MUF resins are used as melamine
  • Melamine-formaldehyde resin powders are typically prepared by spray-drying aqueous melamine-formaldehyde condensation products.
  • Suitable diluents are alcohols such as C 1 to C 4 alkanols, such as methanol, ethanol, n-propanol, isopropanol, propanol isomer mixtures, n-butanol, isobutanol, sec-butanol, tert-butanol, butanol isomer mixtures , Water and mixtures thereof, preferably water or 1 to 99% strength by weight aqueous alcohols of the C 1 to C 4 alkanols, more preferably water.
  • C 1 to C 4 alkanols such as methanol, ethanol, n-propanol, isopropanol, propanol isomer mixtures, n-butanol, isobutanol, sec-butanol, tert-butanol, butanol isomer mixtures , Water and mixtures thereof, preferably water or 1 to 99% strength by weight aqueous alcohols of the
  • Suitable bases are all general alkaline compounds such as inorganic bases, for example alkali metal or alkaline earth metal hydroxides such as sodium hydroxide, alkali metal or alkaline earth metal or organic amines, for example tertiary amines such as tributylamine, triethylamine, or tertiary alkanolamines such as triethanolamine, methyldiethanolamine, or their Mixtures, preferably aqueous alkali metal hydroxides and triethanolamine, particularly preferably sodium hydroxide solution.
  • alkali metal or alkaline earth metal hydroxides such as sodium hydroxide
  • alkali metal or alkaline earth metal or organic amines for example tertiary amines such as tributylamine, triethylamine, or tertiary alkanolamines such as triethanolamine, methyldiethanolamine, or their Mixtures, preferably aqueous alkali metal hydroxides and triethanolamine, particularly preferably sodium
  • Suitable acids are organic acids such as formic acid, acetic acid, maleic acid or inorganic acids such as nitric acid, sulfuric acid, preferably organic acids, particularly preferably formic acid.
  • the melamine-urea-formaldehyde resins according to the invention generally have a melamine content of. (Greater than or equal to) 0.05% by weight and .largecircle. (Lower than or equal to) 0.9% by weight, based on the total mass of the resin, ie 0.05 to 0.9 wt .-%, preferably 0.1 to 0.7 wt .-%, particularly preferably 0.2 to 0.5 wt .-%.
  • the melamine-urea-formaldehyde resins of the present invention may be formulated with urea-formaldehyde condensation products having a formaldehyde to urea weight ratio of from 2: 1 to 0.85: 1 and / or urea in solid or aqueous form Solution be mixed.
  • the solids content of the urea-formaldehyde condensation product is usually 50 to 80%.
  • the solids content can be determined by weighing the liquid resin (eg about 1 g) in a flat sheet metal dish and then drying and re-weighing at 120 ° C. for two hours (M. Dunky, P. Niemz, Holzwerkstoffe und Leime, Springer, Berlin , 2002, page 458).
  • the blending is usually carried out with urea-formaldehyde condensation products advantageously in a weight ratio of inventive melamine-urea-formaldehyde resin to urea-formaldehyde condensation products of 99: 1 to 10:90, in particular 95: 5 to 50:50.
  • the blending with urea is generally carried out in a ratio of Me- lamin-urea-formaldehyde resin to urea or urea solution in a ratio of 99: 1 to 70:30, in particular 98: 2 to 80:20.
  • Further additives can be incorporated into these resins in amounts of up to 10% by weight. This may be e.g. to act alcohols such as ethylene glycol, diethylene glycol or saccharides. Likewise, water-soluble polymers based on acrylamide, ethylene oxide, N-vinylpyrrolidone, vinyl acetate and copolymers can be used with these monomers. Fillers may be added to the resins, such as cellulosic fibers, or mixtures thereof. In addition, they may contain carbonates, or mixtures thereof.
  • sulfites, disulfites and hydrogen sulfites which as cations preferably contain alkali metals such as lithium, sodium or potassium, preferably sodium or potassium, particularly preferably sodium or ammonium. These may be used in an amount of 0.01 to 10% by weight, preferably 0.05 to 1% by weight, based on the weight of the liquid resin.
  • the resins according to the invention are generally stable in storage at 20 ° C. for several weeks.
  • the resins according to the invention are suitable as binders, in particular for the production of moldings containing nocellulose, such as, for example, chipboard, fiberboard or Oriented Strand Board (OSB) boards.
  • the mixtures according to the invention are suitable for the surface bonding of wood, for example for the production of plywood, single-layer and multilayer boards and glulam.
  • MDF medium-density fiberboard
  • the resin is injected into the fiber stream, which moves at high speed. subse- The glued fibers are dried (M.Dunky, P.Niemz, Holzwerkstoffe und Leime, Springer, Berlin, 2002, page 145).
  • the reactivity of the binder mixtures during curing can be increased by adding, immediately before processing, additionally a hardener such as ammonium salts, ammonium sulfate, ammonium nitrate, ammonium phosphates or carboxylic acids such as formic acid and oxalic acid or Lewis acids such as aluminum chloride or acidic salts such as aluminum sulfate or mineral acids such as sulfuric acid or mixtures thereof are added.
  • the hardeners can be mixed with the aqueous binder ("glue liquor") and then sprayed onto chips or fibers, for example, or the hardeners can be applied to the substrate separately from the binder.
  • the lignocellulose-containing moldings according to the invention for example chipboard, OSB boards or medium-density fiberboard (MDF), can be prepared, for example, by compressing 5 to 30% by weight of solid resin, based on lignocellulose-containing material, under pressure at from 120 to 250 ° C. under pressure.
  • hardeners can be used as described above. Under these conditions, the aminoplast resin usually hardens quickly and gives wood-based materials with good mechanical properties.
  • An advantage of the melamine-urea-formaldehyde resins according to the invention is, in addition to the simple method of preparation, that an improvement in the processing properties is achieved over conventional resins of comparable composition, in particular, the resins of the invention are characterized by low swelling values and high strengths at low formaldehyde emissions. Another advantage is the low melamine content.
  • Spray-drying contains 60% by weight of melamine and 40% by weight of formaldehyde) and stirred for 15 minutes at 87 ° C. and a pH of 7.0 to 6.8. After heating to 92 ° C, a pH of 5.0 was set with formic acid, condensed at 95 ° C until a viscosity of 550 mPas was reached (viscosity measurement of a sample taken at RT), then with 10% Sodium hydroxide solution adjusted to a pH of 8.5, cooled to 85 ° C and added within 18 min 302 g (5.02 mol) of urea. After that, i. Vak.
  • Viscosity 532 mPas (at a shear rate of 250 s _1 )
  • the melamine content of the resin is 0.33% by weight; the molar ratio F: U is 1.01
  • Dry content 66.9% (measured by weight difference after 2 h at 120 ° C in a drying oven)
  • spruce chips 500 g were placed in a mixer. Subsequently, a glue liquor of 100 parts and 4 parts of a 52% aqueous ammonium nitrate solution and 10 parts of water was applied. The amount of glue liquor was chosen so that the degree of gluing was 10%. The degree of gluing is the quotient of the mass of dry matter glue and the mass of dry matter wood. b) pressing the glued chips
  • the glued chips were cold pre-compacted in a 30x30cm-form. It was then pressed in a hot press (pressing temperature 200 ° C, pressing time 200 s). The thicknesses of the plates were 15.7 mm each.
  • the determination of the transverse tensile strength is in accordance with EN 319.
  • Example 1 0.33 1, 01 585 0.60 20 5.5

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

Abstract

L'invention concerne un procédé de production de résines mélamine-urée-formaldéhyde renfermant jusqu'à 0,9 % de mélamine, par réaction a) d'urée renfermant 0 à 10 % en poids d'un ou plusieurs composés A, de formaldéhyde et de mélamine, en présence d'une base, à un pH de 7,5 à 11, à une température de 20 à 120 °C, et sous une pression de 0,1 à 10 bars, b) réaction subséquente en présence d'un acide renfermant éventuellement de l'urée présentant 0 à 10 % en poids d'un ou plusieurs composés A, à une température de 60 à 180 °C, et sous une pression de 0,1 à 10 bars, et c) addition subséquente d'urée renfermant 0 à 10 % en poids d'un ou plusieurs composés A, en suivant le mode opératoire b) à un pH de 4 à 5,9.
PCT/EP2013/056563 2012-03-29 2013-03-27 Colle uf renforcée avec de la mélamine, renfermant jusqu'à 0,9 % de mélamine, pour la production de panneaux de fibres de densité moyenne WO2013144226A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL409754A PL233957B1 (pl) 2012-03-29 2013-03-27 Sposób wytwarzania żywic melaminowo-mocznikowo-formaldehydowych
DE112013001771.7T DE112013001771A5 (de) 2012-03-29 2013-03-27 Melamin-verstärkte UF-Leime mit bis zu 0,9% Melamin für die Herstellung von mitteldichten Faserplatten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12162145.2 2012-03-29
EP12162145 2012-03-29

Publications (1)

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WO2013144226A1 true WO2013144226A1 (fr) 2013-10-03

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AR (1) AR090594A1 (fr)
DE (1) DE112013001771A5 (fr)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104513641A (zh) * 2013-12-15 2015-04-15 广西鹿寨通用人造板有限公司 低甲醛释放量胶粘剂的制备方法
CN110684318A (zh) * 2019-09-29 2020-01-14 天津大学 一种用于提高硫脲醛树脂稳定性的方法
WO2023094603A1 (fr) 2021-11-25 2023-06-01 Foresa Technologies, S.L.U. Procédé de production de résines de mélamine-urée-formaldéhyde, résines ainsi obtenues et applications desdites résines

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001596A2 (fr) * 1977-10-26 1979-05-02 BASF Aktiengesellschaft Procédé de fabrication de polycondensats urée-formaldéhyde aqueux
US4536245A (en) 1983-10-11 1985-08-20 Borden, Inc. Low formaldehyde emission urea-formaldehyde resins containing a melamine additive
US4814422A (en) * 1986-06-21 1989-03-21 Basf Aktiengesellschaft Pulverulent aminoplast adhesive resin for wood-base materials having a low formaldehyde emission, its preparation, and a formulated pulverulent aminoplast adhesive resin
EP0864603A2 (fr) * 1997-03-10 1998-09-16 Basf Aktiengesellschaft Liants aqueux pour matériaux en bois
EP1391478A1 (fr) * 2002-08-23 2004-02-25 Pietro Cassaghi Stratifié décoratif sans phénol et son procédé de fabrication
US20080227889A1 (en) * 2004-01-30 2008-09-18 Ami Agrolinz Melamine International Gmbh Flame-Resistant Amino Resin System
WO2009080798A1 (fr) 2007-12-21 2009-07-02 Dynea Oy Procédé de fabrication en continu de solutions aqueuses hautement efficaces de résine d'aminoformaldéhyde
EP2216363A1 (fr) * 2009-02-06 2010-08-11 Basf Se Mélange de résine mélaminée modifiée et aqueuse, son procédé de fabrication et son utilisation pour l'imprégnation de matériaux de support absorbants, ainsi qu'en utilisant un support composite fabriqué à partir du mélange de résine mélaminée

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001596A2 (fr) * 1977-10-26 1979-05-02 BASF Aktiengesellschaft Procédé de fabrication de polycondensats urée-formaldéhyde aqueux
US4536245A (en) 1983-10-11 1985-08-20 Borden, Inc. Low formaldehyde emission urea-formaldehyde resins containing a melamine additive
US4814422A (en) * 1986-06-21 1989-03-21 Basf Aktiengesellschaft Pulverulent aminoplast adhesive resin for wood-base materials having a low formaldehyde emission, its preparation, and a formulated pulverulent aminoplast adhesive resin
EP0864603A2 (fr) * 1997-03-10 1998-09-16 Basf Aktiengesellschaft Liants aqueux pour matériaux en bois
EP1391478A1 (fr) * 2002-08-23 2004-02-25 Pietro Cassaghi Stratifié décoratif sans phénol et son procédé de fabrication
US20080227889A1 (en) * 2004-01-30 2008-09-18 Ami Agrolinz Melamine International Gmbh Flame-Resistant Amino Resin System
WO2009080798A1 (fr) 2007-12-21 2009-07-02 Dynea Oy Procédé de fabrication en continu de solutions aqueuses hautement efficaces de résine d'aminoformaldéhyde
EP2216363A1 (fr) * 2009-02-06 2010-08-11 Basf Se Mélange de résine mélaminée modifiée et aqueuse, son procédé de fabrication et son utilisation pour l'imprégnation de matériaux de support absorbants, ainsi qu'en utilisant un support composite fabriqué à partir du mélange de résine mélaminée

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
G. E. TROUGHTON; S.CHOW, HOLZFORSCHUNG, 1975, pages 214 - 217
M.DUNKY; P.NIEMZ: "Holzwerkstoffe und Leime", 2002, SPRINGER, pages: 145
M.DUNKY; P.NIEMZ: "Holzwerkstoffe und Leime", 2002, SPRINGER, pages: 458
THOMAS MEZGER, DAS RHEOLOGIE-HANDBUCH, pages 203

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104513641A (zh) * 2013-12-15 2015-04-15 广西鹿寨通用人造板有限公司 低甲醛释放量胶粘剂的制备方法
CN104513641B (zh) * 2013-12-15 2016-09-07 广西鹿寨通用人造板有限公司 低甲醛释放量胶粘剂的制备方法
CN110684318A (zh) * 2019-09-29 2020-01-14 天津大学 一种用于提高硫脲醛树脂稳定性的方法
WO2023094603A1 (fr) 2021-11-25 2023-06-01 Foresa Technologies, S.L.U. Procédé de production de résines de mélamine-urée-formaldéhyde, résines ainsi obtenues et applications desdites résines

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