Classifications

• • 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
  • 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
  • C08L61/32—Modified amine-aldehyde condensates
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L2205/00—Polymer mixtures characterised by other features
  • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • C08L33/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
• • 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
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
  • Y10T428/12611—Oxide-containing component
• • 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
  • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• • 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
  • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
  • Y10T428/254—Polymeric or resinous material
• • 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]
  • Y10T428/31942—Of aldehyde or ketone condensation product
• • 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]
  • Y10T428/31942—Of aldehyde or ketone condensation product
  • Y10T428/31946—Next to second aldehyde or ketone condensation product
• • 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]
  • Y10T428/31942—Of aldehyde or ketone condensation product
  • Y10T428/31949—Next to cellulosic
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer

Definitions

• the present invention relates to melamine resin films and / or films made from cellulose-containing fibrous materials containing an aqueous solution
• the invention further relates to special aqueous synthetic resin mixtures.
• Thermoplastic films are usually used for 3D coating of materials, e.g. for coating wood-based materials in the furniture industry.
• the significant advantage of these thermoplastic films has so far been their elasticity, disadvantageous are the high costs in the manufacture, among other things. caused by the additional use of adhesives and the expected disposal costs.
• melamine resin films are mainly used for the surface treatment of wood-based materials such as chipboard, hardboard and blockboard.
• the melamine resin films are glued to the surfaces or edges of the wood-based materials with a suitable adhesive, if necessary using heat and pressure.
• the coating with melamine resin films is intended to improve the resistance of the wood-based materials to mechanical stresses and their water resistance.
• the melamine resins were modified, for example by adding guanamine according to DE-A 44 39 156 or by adding small amounts of an aqueous synthetic resin dispersion according to DE-A 38 37965.
• a combination of aminoplast resins with acrylate dispersions brings about a certain elasticity of the films produced according to DE-A 3700 344.
• the patents described above only disclose the production of so-called soft edges. When coating the soft edges with these melamine resin films, as described in the examples, adhesives are required in order to attach the resin films to the edges.
• the known melamine resin films can still be improved with regard to their deformability.
• the furniture manufacturers for the uniform coating of surfaces with three-dimensional structures such as those e.g. in some styles (country-style furniture) and / or moldings, it is desirable that melamine resin films or melamine resin films can be used which, compared to the known ones, have improved elasticity with improved or at least equally good other properties.
• the coating should be carried out in a single pressing process. The main characteristic of such foils or films lies in their deformability during the pressing process.
• the present invention was based on the object of identifying melamine resin films and / or films which are suitable for the flat coating of three-dimensionally structured surfaces, shaped bodies and three-dimensionally structured objects with sharp-edged elements and yet have the usual quality features of a melamine resin film or film. Furthermore, a synthetic resin mixture is to be made available which is particularly advantageous for impregnating cellulose-containing fibrous materials for the production of melamine resin films for 3D coating.
• the object was achieved by using melamine resin films and / or films made from cellulose-containing fibrous materials or fabrics containing an aqueous solution
• aqueous solutions for the subsequent or preliminary and subsequent soaking of the cellulose-containing fibrous materials are particularly suitable if they are
• Formaldehyde condensation product and (iii) 20 to 90% by weight, in particular 30 to 80% by weight, of a polymer dispersion
• Auxiliaries and additives can also be added to the melamine resin mixture according to the invention, for example 0.1 to 50% by weight, preferably 0.2 to 30% by weight, in particular 0.5 to 20% by weight of urea, caprolactam, Phenyl diglycol, butanediol and / or sucrose, based on 100% by weight of the mixture (i) to (iii). It can also contain conventional additives such as wetting agents, curing agents and catalysts.
• Melamine-formaldehyde condensation products are used as structural component (i).
• the production of the structural component (i) is generally known.
• melamine-formaldehyde condensation products are etherified with d- to C-alkanols such as methanol, ethanol, propanol and / or butanol. Methanol and ethanol are preferred.
• the production of the structural component (ii) is generally known.
• the melamine-formaldehyde condensation product is typically mixed with 20 to 30 mol of methanol and etherified at pH values from 1 to 5 and temperatures from 40 to 80 ° C.
• the condensation conditions depend on the water dilutability desired for the resin, which is at least 1: 6.
• the melamine resins are freed from excess alcohol and formaldehyde by distillation. Possibly present residual formaldehyde is the addition of urea at temperatures from room temperature to 90 ° C preferably reacted 60 to 70 C C.
• copolymer dispersions are used, the copolymers of which preferably contain carboxyl, hydroxyl, amide, glycidyl, carbonyl, N-methylol, N-alkoxymethyl, amino and / or hydrazo groups.
• the above-mentioned functional groups in the copolymer are obtained in a customary manner by polymerizing in corresponding monomers which carry these functional groups.
• the copolymers generally contain the abovementioned functional groups in such an amount that they can contain 0.1 to 50% by weight, preferably 0.3 to 20% by weight, based on the copolymer, of these monomers having functional groups in copolymerized form.
• the main monomers of the comonomers with the abovementioned groups are the customary, copolymerizable olefinically unsaturated monomers, for example C to C 2 alkyl esters of acrylic acid and methacrylic acid, preferably d to C 8 alkyl esters, for example methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate , Propyl acrylate, propyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, lauryl acrylate and lauryl methacrylate; Vinyl esters of C 2 to C 4 carboxylic acids, for example vinyl acetate and vinyl propionate, C to C 4 dialkyl esters of maleic acid and fumaric acid, vinyl aromatics such as styrene, ⁇ -methylstyrene, vinyltolu
• the pH of the polymer dispersion is usually adjusted to 7.5 to 10 before the addition of the other components.
• the melamine resin film and / or film used according to the invention has the required high elasticity, which is necessary for coating three-dimensionally structured surfaces and / or moldings and / or structured objects with sharp-edged elements, without sacrificing the other quality properties.
• Sharp-edged elements are understood to mean, inter alia, edges, corners and tapering which describe a defined angle which results from two or more planes converging towards one another.
• cellulose-containing fibrous materials or fabrics or decorative paper are used in a manner known per se.
• the cellulose-containing fibrous materials are mixed with the melamine resin mixture (i) to (iii) according to the invention or with a melamine-formaldehyde impregnating resin or with a mixture of melamine-formaldehyde impregnating resins and lacquer resins or with a mixture of urea-formaldehyde resins and melamine resins.
• Pre-impregnated with urea-formaldehyde resins For every 100 parts by weight there are 25 to 85 parts by weight of the melamine resin mixture, based on the solids content of the melamine resin mixture.
• the impregnated fibrous materials are then dried to melamine resin films or melamine resin films in the customary manner, e.g. in a hot air stream at temperatures from 140 to 200 ° C.
• the further processing of the melamine resin films or melamine resin films is carried out by impregnating them with the melamine resin mixture (i) to (iii) and, if appropriate, using heat and pressure to bond the material part to be coated with the three-dimensionally structured surface.
• Preferred materials are wood-based materials, e.g. Country-style furniture and "Oriented Strand Board” (OSB) panels.
• the bonding is preferably carried out flat in a single work step, i.e. the three-dimensionally structured surface is coated with a single melamine resin film or sheet protruding over the complete structure in a single pressing process.
• the term “melamine resin film” is understood to mean a non-self-adhesive film, the term “melamine resin film” describing a self-adhesive film.
• Luhydran® S 937 T from BASF Aktiengesellschaft, a copolymer from an aqueous, hydroxyl-containing dispersion of a copolymer based on acrylic and methacrylic acid esters and styrene
• Decorative paper with a basis weight of 80 g / m 2 was pre-impregnated with component (i) (70% resin application based on the paper weight). After addition of 0.5% by weight hardener based on the synthetic resin mixture (eg hardener 529 liquid from BASF Aktiengesellschaft), the synthetic resin mixture from Example 1 was knife-coated onto the pre-impregnated decorative paper and then dried, so that the decorative papers had a solids content of 120 to 130% and had a residual moisture of 6 to 10%.
• hardener based on the synthetic resin mixture eg hardener 529 liquid from BASF Aktiengesellschaft
• Comparative example With the addition of 0.5% by weight of hardener based on component (i) (for example hardener 529 liquid from BASF Aktiengesellschaft), decorative paper with a weight of 80 g / m 2 was impregnated with and dried that the decorative papers had a solid content in the full impregnation of 120 to 130% and a residual moisture content of 6 to 10%.
• 3D coating and characterization With the addition of 0.5% by weight of hardener based on component (i) (for example hardener 529 liquid from BASF Aktiengesellschaft), decorative paper with a weight of 80 g / m 2 was impregnated with and dried that the decorative papers had a solid content in the full impregnation of 120 to 130% and a residual moisture content of 6 to 10%.
• the melamine resin film obtained was pressed onto an MDF (Medium Density Fiber) plate with a diameter of 16.5 cm including a 3D structure.
• 3D structures are contours with round and straight surfaces and / or edges with a defined angle.
• the pressing process took place in a laboratory press at 150 to 160 ° C under the force of 45 kN and in a time of 30-60 s.
• the deformability and the adhesion of the melamine resin film to the MDF board including a 3D structure was assessed.
• the coating should lie completely against the structure and adhere firmly to it without tearing or breaking.
• the resulting melamine resin film was placed on an MDF board at a temperature of 160-
• the quality of the hardening was determined by exposure to 0.2N hydrochloric acid for 16 hours
• the surface is not attacked by the acid.
• the strength of the attack can be judged from the strength of the red color.
• the closed or porous nature of the coated surface is used to assess the sensitivity to dirt.
• the surface to be tested was rubbed with black shoe polish and then cleaned again with a rag.
• the shoe polish remaining in the pores enables the closed surfaces to be assessed.
• Black degree The black degree was measured according to D 3265 with a tint tester 527 with brightness measuring head tint sensor. The measuring range covers 0-99.99 brightness units, whereby zero is the lowest brightness level (absolutely black). At values> 0.8, a distinct graying can already be seen. After the device was calibrated with a standard, the test specimen was measured three times and the mean value was given as black level.

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Laminated Bodies (AREA)
• Reinforced Plastic Materials (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Paints Or Removers (AREA)

Applications Claiming Priority (3)

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• 2003
  • 2003-01-17 DE DE2003101901 patent/DE10301901A1/de not_active Withdrawn
• 2004
  • 2004-01-10 WO PCT/EP2004/000121 patent/WO2004065484A1/de active Application Filing
  • 2004-01-10 US US10/542,305 patent/US7306842B2/en not_active Expired - Fee Related
  • 2004-01-10 JP JP2006500542A patent/JP2006516935A/ja active Pending
  • 2004-01-10 CA CA 2512890 patent/CA2512890A1/en not_active Abandoned
  • 2004-01-10 EP EP04701297A patent/EP1587870A1/de not_active Withdrawn
  • 2004-01-10 PL PL37834604A patent/PL378346A1/pl not_active Application Discontinuation
  • 2004-01-10 CN CNB2004800023169A patent/CN100374501C/zh not_active Expired - Fee Related

Non-Patent Citations (1)

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