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WO2018104003A1 - Two-component polyurethane coating material, coating method and coated parts - Google Patents

Two-component polyurethane coating material, coating method and coated parts Download PDF

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Publication number
WO2018104003A1
WO2018104003A1 PCT/EP2017/079006 EP2017079006W WO2018104003A1 WO 2018104003 A1 WO2018104003 A1 WO 2018104003A1 EP 2017079006 W EP2017079006 W EP 2017079006W WO 2018104003 A1 WO2018104003 A1 WO 2018104003A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
beschichtungsmatenal
polyether
coating
coating material
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.)
Ceased
Application number
PCT/EP2017/079006
Other languages
German (de)
French (fr)
Inventor
Christian Bruchertseifer
Klaus Buck
Eugen HÖGELE
Jens KLAUER
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.)
BASF SE
BASF Coatings GmbH
Original Assignee
BASF SE
BASF Coatings GmbH
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Filing date
Publication date
Application filed by BASF SE, BASF Coatings GmbH filed Critical BASF SE
Publication of WO2018104003A1 publication Critical patent/WO2018104003A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/08—Polyurethanes from polyethers
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • 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
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/20—Heterocyclic amines; Salts thereof
    • C08G18/2081—Heterocyclic amines; Salts thereof containing at least two non-condensed heterocyclic rings
    • 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
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/22—Catalysts containing metal compounds
    • C08G18/227—Catalysts containing metal compounds of antimony, bismuth or arsenic
    • 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
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225—Polyamines
    • C08G18/3237—Polyamines aromatic
    • C08G18/324—Polyamines aromatic containing only one aromatic ring
    • 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
    • C08G18/48—Polyethers
    • C08G18/4829—Polyethers containing at least three hydroxy groups
    • 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
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
    • C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
    • 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
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • 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
    • C08K5/0066—Flame-proofing or flame-retarding additives
    • 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
    • C08K5/17—Amines; Quaternary ammonium compounds
    • C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
    • 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
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • C08K5/34928—Salts
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3

Definitions

  • the present invention relates to a two-component polyurethane coating material comprising a first component A and a second component B.
  • Wheel sets of rail vehicles must be protected against corrosion.
  • Wheel sets are wheels, axles including bogies and underframe of rail vehicles.
  • the coatings must therefore be very resistant and tough-elastic, in order to avoid damage to the wheelsets by said flying ballast stones.
  • Another important feature of such coatings is to ensure a high level of noise protection during operation, that is, when rail-mounted vehicles slide over the rail system.
  • Patent application WO 2012/152870 A1 discloses wheel sets for rail-bound vehicles or parts thereof with a hardened coating produced from a two-component polyurethane coating material.
  • the previously known coatings show satisfactory results, it is an object of the present invention to further improve the corrosion protection and the impact protection of such coatings.
  • the impact resistance should be improved at low temperatures.
  • It is a further object of the invention not only to obtain the described properties in terms of corrosion protection and impact protection, but in addition to these properties to ensure excellent flame retardance of the coatings. So it is particularly about the compatibility of flame retardants on the one hand, and still obtaining a coating that is conditioned so that it has excellent corrosion protection and impact protection. Furthermore, a good noise protection should be achieved.
  • component A contains,
  • the polyether and / or polyester polyol has a number average molecular weight of 2000 to 9000 g / mol, in particular 5000 to 7000 g / mol.
  • the determination of the number average molecular weight in the context of the present invention by means of GPC analysis with THF (+0.1% acetic acid) as eluent (1 ml / min) on a styrene-divinylbenzene column combination. The calibration is performed with polystyrene standards.
  • the hydroxyl number of the polyether and / or polyester polyol is preferably from 22 to 56, more preferably from 24 to 30.
  • the OH number (hydroxyl number) is measured in the context of the present invention according to DIN 53240.
  • polyether polyols in particular trifunctional (that is, on average three OH groups exhibiting) polyether polyols.
  • the coating material advantageously contains, as flame retardant, diphenyl cresyl phosphate, melamine phosphate and / or melamine cyanurate, more preferably a mixture of diphenyl cresyl phosphate on the one hand and melamine phosphate or melamine cyanurate on the other hand, the weight ratio of diphenyl cresyl phosphate: melamine phosphate or melamine cyanurate being from 1: 0.75 to 1: 3.
  • the coating material may of course contain conventional additives, for example wetting and dispersing additives and / or defoamers. Typical proportions range, for example, 0.05 to 2.0 wt .-% wetting and dispersing and 0.1 to 3.0 wt .-% defoamer, each based on the total amount of component A.
  • the wetting and dispersing additive used is advantageously a salt of unsaturated polyaminamides and acidic polyesters.
  • the defoamer is advantageously a silicone oil.
  • the aromatic diamine is preferably an isomeric mixture of 3,5-diethyltoluene-2,4-diamine and 3,5-diethyltoluene-2,6-diamine.
  • the amine catalyst is preferably the components known to the person skilled in the art in this connection, that is to say in particular aminic or diaminic organic compounds having exclusively tertiary and thus aprotic and non-reactive amino groups.
  • aminic or diaminic organic compounds having exclusively tertiary and thus aprotic and non-reactive amino groups.
  • DABCO diazabicyclooctane
  • metal-containing catalyst (s) for the polyurethane formation are basically known in the art components. Examples include zinc, zirconium, titanium, tin or bismuth-containing catalysts, in particular organometallic compounds or metal carboxylates.
  • the coating material may of course contain conventional pigments, for example in the form of pigment pastes.
  • the isocyanate prepolymers contained in component B preferably have an isocyanate content of 8 to 16%.
  • the isocyanate content is determined in the context of the present invention according to DIN EN ISO 1 1909 by reaction of the respective sample with excess dibutylamine and back-titration of the excess with hydrochloric acid against bromophenol blue.
  • such prepolymers can be prepared by reacting 35 to 65% by weight of aromatic diisocyanate and 65 to 35% by weight of hydroxyl-containing polyether and / or polyester, the sum of diisocyanate and polyether and / or polyester being 100% by weight, produced.
  • polyethers in particular polyoxyalkylene-based polyethers such as polyethylene and / or polypropylene-based polyethers.
  • the polyisocyanates contained in component B preferably consist of at least 90% by weight of the abovementioned prepolymers.
  • the use of further polyisocyanates is of course possible, but ultimately preferably increased or even exclusively the said prepolymers are used.
  • component B contains exclusively the said prepolymers as polyisocyanates.
  • the isocyanate-reactive groups of component A react with the isocyanate groups of component B.
  • the mixing ratio of component A: component B is advantageously adjusted so that the molar ratio of the isocyanate-reactive groups Component A to the isocyanate groups of component B 1, 1: 1 to 1: 1, 2, more preferably 1: 1 to 1: 1, 1.
  • the present invention also relates to a method for coating wheelsets, bogies and underframes for rail vehicles, railroad tracks and parts of said objects by applying and curing the coating material according to the invention.
  • the invention further relates to wheelsets, bogies and bases for rail vehicles, railroad tracks and parts of said objects, which are at least partially coated with a cured coating material according to the invention.
  • the coating material according to the invention can advantageously be applied with a 2K hot spray system.
  • the layer thickness of the cured coating is advantageously in the range of 2 to 6 mm.
  • the coating material according to the invention has very advantageous properties. It is highly reactive and fast curing. An application on vertical surfaces without drainage is possible.
  • the cured coating has excellent mechanical properties. It is heat resistant and shows no softening at elevated temperatures. Their elasticity is also at low temperatures up to -45 ° C.
  • it has a very good Flannnntik despite its clearly organic matrix, since it surprisingly succeeded, despite the high proportion of Flamnntiknnitteln on the other ingredients to produce a coating agent, which knows to fulfill the described properties in terms of corrosion protection and impact protection after application and curing.
  • the coating has very good noise protection properties.
  • the objects to be coated consisting of iron or steel can be cleaned by sandblasting or another suitable cleaning method.
  • an adhesion primer is applied to improve the adhesion prior to the application of the coating material according to the invention.
  • Suitable adhesion primers are epoxy resin coating compositions.
  • the coating which is produced from the coating material according to the invention is preferably a topcoat, that is to say in any case the topmost coating layer, even in the case of an optionally present multilayer coating structure.
  • Toluene diamine-based aromatic diamine crosslinking agent (BAYTEC VP PU 30EL14) was added to 1, 000 kg and stirred for 20 minutes. Thereafter, 13.650 kg of diphenyl cresyl phosphate, 2.500 kg of a 25 percent solution of diazabicyclooctane in 1, 4-butanediol, 0.100 kg of bismuth carboxylate, 1, 300 kg of white pigment paste (white pigment in castor oil) and 0.700 kg of black pigment paste (black pigment in castor oil) were added. Finally, it was stirred under vacuum at 700 rpm for 30 minutes.
  • the components A and B were mixed with each other in a volume ratio of 1: 1 and applied immediately afterwards with a 2K hot spray unit on a wheelset for rail vehicles.
  • the wheelset had previously been primed with an epoxy resin based zinc dust primer.
  • the applied coating material according to the invention was cured. This resulted in a layer thickness of 4 mm.
  • the qualification of protective coatings can be carried out according to the standard DIN EN 13261: 201 1 -01.
  • DIN EN 13261: 201 1 -01 This standard specifies four protection classes with regard to corrosion and impact protection.
  • the wheel sets coated with the material according to the invention were tested according to the said standard.
  • the coating meets all the requirements of protection class 2.
  • the thickness of the coating, the adhesion of the coating, the impact resistance, the resistance to blasting agents, the salt water resistance, the resistance tested against corrosive media and resistance to cyclic mechanical stress According to the standard, the thickness of the coating, the adhesion of the coating, the impact resistance, the resistance to blasting agents, the salt water resistance, the resistance tested against corrosive media and resistance to cyclic mechanical stress.
  • the coating of the invention has a very good adhesion and a low glass transition temperature.
  • the test to determine the flammability of materials and their flame propagation properties in accordance with ISO 5658-2: 2006 / Am1: 201 1 provided the required fire protection proof.
  • the impact resistance of the coating was also given at -45 ° C.

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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)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention relates to a two-component polyurethane coating material and to a method for coating wheelsets, bogies and underframes for railbound vehicles, railway rails and parts of such objects, by applying and curing such a coating material.

Description

Zwei-Komponenten-Polyurethanbeschichtungsmaterial, Beschichtungsverfah- ren und beschichtete Teile  Two-component polyurethane coating material, coating processes and coated parts

Die vorliegende Erfindung betrifft ein Zwei-Komponenten- Polyurethanbeschichtungsmaterial, umfassend eine erste Komponente A und eine zweite Komponente B. The present invention relates to a two-component polyurethane coating material comprising a first component A and a second component B.

Radsätze von schienengebundenen Fahrzeugen müssen vor Korrosion geschützt werden. Unter Radsätzen sind die Räder, die Achsen einschließlich der Drehgestelle und Untergestelle der schienengebundenen Fahrzeuge zu verstehen. Insbesondere im Hochgeschwindigkeitsverkehr sind die genannten Teile nicht nur vor Witterungseinflüssen zu schützen, sondern diese Teile unterliegen auch einer hohen mechanischen Beanspruchung durch auffliegende Schottersteine oder dergleichen. Die Beschichtungen müssen also sehr widerstandsfähig und zähelastisch sein, um eine Beschädigung der Radsätze durch die genannten auffliegenden Schottersteine zu vermeiden. Ferner ist es im Zusammenhang mit entsprechenden Beschichtungen von entscheidender Bedeutung, dass der Aufbau die gegebenen Anforderungen der einschlägigen Flammschutznormen zu erfüllen wissen. Dies ist nochmals umso wichtiger, als regelmäßig lediglich dickschichtige Beschichtungen auf Basis organischer Matrices, die selbstverständlich in Bezug auf Entflammbarkeit sehr kritisch zu beurteilen sind, die hohen Anforderungen an die Witterungsstabilität und den Schlagschutz erfüllen können. Eine weitere wichtige Eigenschaft entsprechender Beschichtungen ist die Gewährleistung eines hohen Lärmschutzes im Betrieb, das heißt, wenn schienengebundene Fahrzeugen über das Schienensystem gleiten. Wheel sets of rail vehicles must be protected against corrosion. Wheel sets are wheels, axles including bogies and underframe of rail vehicles. In particular, in high-speed traffic, the parts mentioned are not only protected from the weather, but these parts are also subject to high mechanical stress by flying up ballast stones or the like. The coatings must therefore be very resistant and tough-elastic, in order to avoid damage to the wheelsets by said flying ballast stones. Furthermore, in the context of corresponding coatings, it is crucial that the structure meet the given requirements of the relevant flame retardance standards. This is all the more important because only thick-layered coatings based on organic matrices, which of course have to be assessed very critically with regard to flammability, can meet the high requirements for weathering stability and impact protection. Another important feature of such coatings is to ensure a high level of noise protection during operation, that is, when rail-mounted vehicles slide over the rail system.

Es ist bekannt, zum Schlagschutz 2-Komponenenten-Polyurethanmassen auf die Radsätze aufzubringen (5. Fachtagung ZfP im Eisenbahnwesen, 4.-6- März 2008 Wittenberge). Die bekannten Schlagschutzbeschichtungen werden in einer Schichtdicke von mindestens 6 mm aufgebracht. It is known to apply for impact protection 2-component polyurethane compounds on the wheelsets (5th Symposium ZfP in the railway industry, 4-6 March 2008 Wittenberge). The known impact protection coatings are applied in a layer thickness of at least 6 mm.

Auch Eisenbahnschienen unterliegen einer hohen Beanspruchung durch Steinschlag und Witterungseinflüsse. Durch das Aufbringen einer Schlagschutzbeschichtung ist es möglich, die Beanspruchung zu reduzieren. Auch Eigenschaften wie Flammschutz und Lärmschutz spielen eine tragende Rolle. Allerdings werden bei Eisen- bahnschienen die Laufflächen, auf denen die Räder aufliegen, nicht beschichtet. Eine Beschichtung dieser Fläche würde einem hohen Verschleiß unterliegen und außerdem würde die notwendige Reibung zwischen Schiene und den aufgetriebenen Rädern des Schienenfahrzeugs beeinträchtigt. Railroad tracks are also subject to heavy use due to rockfall and weather conditions. By applying an impact protection coating, it is possible to reduce the stress. Properties such as flame retardance and noise control also play a major role. However, in iron The running surfaces on which the wheels rest are not coated. A coating of this surface would be subject to high wear and also the necessary friction between the rail and the swaged wheels of the rail vehicle would be affected.

Aus der Patentanmeldung WO 2012/152870 A1 sind mit einer gehärteten, aus einem Zwei-Komponenten-Polyurethanbeschichtungsmaterial hergestellten Beschichtung versehene Radsätze für schienengebundene Fahrzeuge oder deren Teile bekannt. Patent application WO 2012/152870 A1 discloses wheel sets for rail-bound vehicles or parts thereof with a hardened coating produced from a two-component polyurethane coating material.

Obwohl die bisher bekannten Beschichtungen zufrieden stellende Ergebnisse zeigen, ist es Aufgabe der vorliegenden Erfindung, den Korrosionsschutz und den Schlagschutz derartiger Beschichtungen weiter zu verbessern. Insbesondere soll die Schlagfestigkeit bei tiefen Temperaturen verbessert werden. Dabei ist es ferner Aufgabe der Erfindung, nicht nur die beschriebenen Eigenschaften hinsichtlich Korrosionsschutz und den Schlagschutz zu erhalten, sondern zusätzlich zu diesen Eigenschaften einen hervorragenden Flammschutz der Beschichtungen zu gewährleisten. Es geht also insbesondere um die Vereinbarkeit von Flammschutz einerseits, und trotzdem Erhalt einer Beschichtung, die so konditioniert ist, dass sie einen hervorragenden Korrosionsschutz und Schlagschutz besitzt. Weiterhin sollte ein guter Lärmschutz erreicht werden. Although the previously known coatings show satisfactory results, it is an object of the present invention to further improve the corrosion protection and the impact protection of such coatings. In particular, the impact resistance should be improved at low temperatures. It is a further object of the invention not only to obtain the described properties in terms of corrosion protection and impact protection, but in addition to these properties to ensure excellent flame retardance of the coatings. So it is particularly about the compatibility of flame retardants on the one hand, and still obtaining a coating that is conditioned so that it has excellent corrosion protection and impact protection. Furthermore, a good noise protection should be achieved.

Die genannten Aufgaben werden gelöst durch ein Zwei-Komponenten- Polyurethanbeschichtungsmaterial, das dadurch gekennzeichnet ist, dass die Komponente A The stated objects are achieved by a two-component polyurethane coating material which is characterized in that component A

18,5 bis 50 Gew.-% mindestens eines Polyether- und/oder Polyesterpolyols mit einem zahlenmittleren Molekulargewicht von 1500 bis 10000 g/mol und einer Hydro- xyl-Zahl von 20 bis 60,  From 18.5 to 50% by weight of at least one polyether and / or polyester polyol having a number-average molecular weight of from 1500 to 10000 g / mol and a hydroxyl number of from 20 to 60,

35 bis 80 Gew.-% mindestens eines Flammschutzmittel,  From 35 to 80% by weight of at least one flame retardant,

1 bis 25 Gew.-% mindestens eines aromatischen Diamins, From 1 to 25% by weight of at least one aromatic diamine,

0,01 bis 3,0 Gew.-% mindestens eines aminischen Katalysators, und 0.01 to 3.0 wt .-% of at least one amine catalyst, and

0,05 bis 2,0 Gew.-% mindestens eines Metall-haltigen Katalysators für die Polyurethanbildung, wobei die gewichtsprozentualen Angaben auf die Gesamtmasse der Komponente A bezogen sind, enthält, 0.05 to 2.0 wt .-% of at least one metal-containing catalyst for the polyurethane formation, wherein the weight percentages are based on the total mass of component A contains,

und and

die Komponente B the component B

mindestens ein Isocyanat-Präpolymer mit einem Isocyanatgehalt von 6 bis 20 % enthaltend, in umgesetzter Form, mindestens ein aromatisches Diisocyanat und mindestens einen hydroxylgruppenhaltigen Polyether und/oder hydroxylgruppenhal- tigen Polyester, enthält. containing at least one isocyanate prepolymer having an isocyanate content of 6 to 20%, in reacted form, at least one aromatic diisocyanate and at least one hydroxyl-containing polyether and / or hydroxylgruppenhal- term polyester.

Vorzugsweise weist das Polyether- und/oder Polyesterpolyol ein zahlenmittleres Molekulargewicht von 2000 bis 9000 g/mol, insbesondere 5000 bis 7000 g/mol auf. Die Bestimmung des zahlenmittleren Molekulargewichts erfolgt im Rahmen der vorliegenden Erfindung mittels GPC-Analyse mit THF (+0,1 % Essigsäure) als Eluent (1 ml/min) auf einer Styrol-Divinylbenzol-Säulenkombination. Die Kalibrierung wird mit Polystyrol-Standards durchgeführt. Preferably, the polyether and / or polyester polyol has a number average molecular weight of 2000 to 9000 g / mol, in particular 5000 to 7000 g / mol. The determination of the number average molecular weight in the context of the present invention by means of GPC analysis with THF (+0.1% acetic acid) as eluent (1 ml / min) on a styrene-divinylbenzene column combination. The calibration is performed with polystyrene standards.

Bevorzugt liegt die Hydroxyl-Zahl des Polyether- und/oder Polyesterpolyols von 22 bis 56, nochmals bevorzugt von 24 bis 30. Die OH-Zahl (Hydroxylzahl) wird im Rahmen der vorliegenden Erfindung gemäß DIN 53240 gemessen. The hydroxyl number of the polyether and / or polyester polyol is preferably from 22 to 56, more preferably from 24 to 30. The OH number (hydroxyl number) is measured in the context of the present invention according to DIN 53240.

Besonders bevorzugt sind Polyetherpolyole, insbesondere trifunktionelle (das heißt im Mittel drei OH-Gruppen aufweisendes) Polyetherpolyole. Particularly preferred are polyether polyols, in particular trifunctional (that is, on average three OH groups exhibiting) polyether polyols.

Vorheilhaft enthält das Beschichtungsmaterial als Flammschutzmittel Diphenylkre- sylphosphat, Melaminphosphat und/oder Melamincyanurat, nochmals bevorzugt eine Mischung von Diphenylkresylphosphat einerseits und Melaminphosphat oder Melamincyanurat andererseits, wobei das Gewichtsverhältnis Diphenylkresylphosphat : Melaminphosphat beziehungsweise Melamincyanuart von 1 : 0,75 bis 1 : 3 beträgt. The coating material advantageously contains, as flame retardant, diphenyl cresyl phosphate, melamine phosphate and / or melamine cyanurate, more preferably a mixture of diphenyl cresyl phosphate on the one hand and melamine phosphate or melamine cyanurate on the other hand, the weight ratio of diphenyl cresyl phosphate: melamine phosphate or melamine cyanurate being from 1: 0.75 to 1: 3.

Das Beschichtungsmaterial kann selbstverständlich übliche Additive, beispielsweise Netz- und Dispergieradditive und/oder Entschäumer enthalten. Typische Anteilsbereiche betragen beispielsweise 0,05 bis 2,0 Gew.-% Netz- und Dispergieradditiv und 0,1 bis 3,0 Gew.-% Entschäumer, jeweils bezogen auf die Gesamtmenge der Komponente A. Als Netz- und Dispergieradditiv wird vorteilhaft ein Salz aus ungesättigten Poly- aminamiden und sauren Polyestern eingesetzt. Der Entschäumer ist vorteilhaft ein Silikonöl. The coating material may of course contain conventional additives, for example wetting and dispersing additives and / or defoamers. Typical proportions range, for example, 0.05 to 2.0 wt .-% wetting and dispersing and 0.1 to 3.0 wt .-% defoamer, each based on the total amount of component A. The wetting and dispersing additive used is advantageously a salt of unsaturated polyaminamides and acidic polyesters. The defoamer is advantageously a silicone oil.

Das aromatische Diamin ist bevorzugt ein Isomerengemisch von 3,5-Diethyltoluol- 2,4-Diamin und 3,5-Diethyltoluol-2,6-Diamin. The aromatic diamine is preferably an isomeric mixture of 3,5-diethyltoluene-2,4-diamine and 3,5-diethyltoluene-2,6-diamine.

Bei dem aminischen Katalysator handelt es sich bevorzugt um die dem Fachmann in diesem Zusammenhang bekannten Komponenten, das heißt insbesondere aminische beziehungsweise diaminische organische Verbindungen mit ausschließlich tertiären und damit aprotischen und nicht reaktiven Aminogruppen. Beispielhaft sei Diazabicyclooctan (DABCO) genannt. The amine catalyst is preferably the components known to the person skilled in the art in this connection, that is to say in particular aminic or diaminic organic compounds having exclusively tertiary and thus aprotic and non-reactive amino groups. As an example, diazabicyclooctane (DABCO) may be mentioned.

Auch der oder die Metall-haltigen Katalysator(en) für die Polyurethanbildung sind dem Fachmann grundsätzlich bekannte Komponenten. Beispielhaft seien Zink-, Zirconium-, Titan-, Zinn- oder Bismuth-haltige Katalysatoren, insbesondere organo- metallische Verbindungen oder Metallcarboxylate, genannt. Also, the metal-containing catalyst (s) for the polyurethane formation are basically known in the art components. Examples include zinc, zirconium, titanium, tin or bismuth-containing catalysts, in particular organometallic compounds or metal carboxylates.

Das Beschichtungsmaterial kann selbstverständlich übliche Pigmente, beispielsweise in Form von Pigmentpasten, enthalten. The coating material may of course contain conventional pigments, for example in the form of pigment pastes.

Die in Komponente B enthaltenen Isocyanat-Präpolymere weisen bevorzugt einen Isocyanatgehalt von 8 bis 16 % auf. Der Isocyanatgehalt wird im Rahmen der vorliegenden Erfindung gemäß DIN EN ISO 1 1909 durch Umsetzung der jeweiligen Probe mit überschüssigem Dibutylamin und Rücktitration des Überschusses mit Salzsäure gegen Bromphenolblau bestimmt. The isocyanate prepolymers contained in component B preferably have an isocyanate content of 8 to 16%. The isocyanate content is determined in the context of the present invention according to DIN EN ISO 1 1909 by reaction of the respective sample with excess dibutylamine and back-titration of the excess with hydrochloric acid against bromophenol blue.

Beispielsweise sind solche Präpolymere herstellbar durch Umsetzung von 35 bis 65 Gew.-% aromatischem Diisocyanat und 65 bis 35 Gew.-% hydroxylgruppenhaltigem Polyether und/oder Polyester, wobei die Summe von Diisocyanat und Polyether und/oder Polyester 100 Gew.-% beträgt, herstellbar. Bevorzugt ist der Einsatz von Polyethern, insbesondere Polyoxyalkylen-basierten Polyethern wie Polyethylen- und/oder Polypropylen-basierten Polyethern. Die in Komponente B enthaltenen Polyisocyanate bestehen bevorzugt zu mindestens 90 Gew.-% aus den oben genannten Präpolymeren. Der Einsatz weiterer Polyisocyanate ist selbstverständlich möglich, jedoch werden letztlich bevorzugt vermehrt oder sogar ausschließlich die genannten Präpolymere eingesetzt. Ganz besonders bevorzugt enthält die Komponente B als Polyisocyanate ausschließlich die genannten Präpolymere. For example, such prepolymers can be prepared by reacting 35 to 65% by weight of aromatic diisocyanate and 65 to 35% by weight of hydroxyl-containing polyether and / or polyester, the sum of diisocyanate and polyether and / or polyester being 100% by weight, produced. Preference is given to the use of polyethers, in particular polyoxyalkylene-based polyethers such as polyethylene and / or polypropylene-based polyethers. The polyisocyanates contained in component B preferably consist of at least 90% by weight of the abovementioned prepolymers. The use of further polyisocyanates is of course possible, but ultimately preferably increased or even exclusively the said prepolymers are used. Most preferably, component B contains exclusively the said prepolymers as polyisocyanates.

Bei der Härtung des Materials reagieren die Isocyanat-reaktiven Gruppen der Komponente A, insbesondere Hydroxylgruppen und Aminogruppen, mit den Iso- cyanatgruppen der Komponente B. Das Mischungsverhältnis Komponente A : Komponente B wird vorteilhaft so eingestellt, dass das molare Verhältnis der Isocyanat-reaktiven Gruppen der Komponente A zu den Isocyanatgruppen der Komponente B 1 ,1 : 1 bis 1 : 1 ,2, nochmals bevorzugt 1 : 1 bis 1 : 1 ,1 beträgt. In the curing of the material, the isocyanate-reactive groups of component A, in particular hydroxyl groups and amino groups, react with the isocyanate groups of component B. The mixing ratio of component A: component B is advantageously adjusted so that the molar ratio of the isocyanate-reactive groups Component A to the isocyanate groups of component B 1, 1: 1 to 1: 1, 2, more preferably 1: 1 to 1: 1, 1.

Die vorliegende Erfindung betrifft auch ein Verfahren zum Beschichten von Radsätzen, Drehgestellen und Untergestellen für schienengebundene Fahrzeuge, Eisenbahnschienen und Teilen der genannten Gegenstände durch Aufbringen und Härten des erfindungsgemäßen Beschichtungsmaterials. The present invention also relates to a method for coating wheelsets, bogies and underframes for rail vehicles, railroad tracks and parts of said objects by applying and curing the coating material according to the invention.

Die Erfindung betrifft ferner Radsätze, Drehgestelle und Untergestelle für schienengebundene Fahrzeuge, Eisenbahnschienen und Teile der genannten Gegenstände, die mindestens teilweise mit einem gehärteten erfindungsgemäßen Beschichtungs- material beschichtet sind. The invention further relates to wheelsets, bogies and bases for rail vehicles, railroad tracks and parts of said objects, which are at least partially coated with a cured coating material according to the invention.

Das erfindungsgemäße Beschichtungsmaterial kann vorteilhaft mit einer 2K- Heißspritzanlage appliziert werden. Die Schichtdicke der gehärteten Beschichtung liegt vorteilhaft im Bereich von 2 bis 6 mm. The coating material according to the invention can advantageously be applied with a 2K hot spray system. The layer thickness of the cured coating is advantageously in the range of 2 to 6 mm.

Das erfindungsgemäße Beschichtungsmaterial weist sehr vorteilhafte Eigenschaften auf. Es ist hoch reaktiv und schnell härtend. Eine Applikation auf vertikalen Untergründen ohne Ablaufen ist möglich. Die ausgehärtete Beschichtung weist hervorragende mechanische Eigenschaften auf. Sie ist hitzefest und zeigt keine Erweichung bei erhöhten Temperaturen. Ihre Elastizität wird auch bei niedrigen Temperaturen von bis zu - 45 °C aufrechterhalten. Zudem weist es trotz seiner eindeutig organischen Matrix einen sehr guten Flannnnschutz auf, da es überraschenderweise gelang, trotz des hohen Anteils an Flamnnschutznnitteln über die weiteren Bestandteile ein Beschichtungsmittel herzustellen, welches nach Applikation und Härtung die beschriebenen Eigenschaften hinsichtlich Korrosionsschutz und Schlagschutz zu erfüllen weiß. Nicht zuletzt weißt die Beschichtung sehr gute Lärmschutzeigenschaften auf. The coating material according to the invention has very advantageous properties. It is highly reactive and fast curing. An application on vertical surfaces without drainage is possible. The cured coating has excellent mechanical properties. It is heat resistant and shows no softening at elevated temperatures. Their elasticity is also at low temperatures up to -45 ° C. In addition, it has a very good Flannnnschutz despite its clearly organic matrix, since it surprisingly succeeded, despite the high proportion of Flamnnschutznnitteln on the other ingredients to produce a coating agent, which knows to fulfill the described properties in terms of corrosion protection and impact protection after application and curing. Last but not least, the coating has very good noise protection properties.

Vor der Aufbringung des erfindungsgemäßen Beschichtungsmaterials können die aus Eisen oder Stahl bestehenden zu beschichtenden Gegenstände durch Sandstrahlen oder ein anderes geeignetes Reinigungsverfahren gereinigt werden. Vorteilhaft wird zur Verbesserung der Haftung vor der Aufbringung des erfindungsgemäßen Beschichtungsmaterials ein Haftprimer aufgebracht. Als Haftprimer eignen sich Epoxidharz-Beschichtungsmittel. Die Beschichtung, die aus dem erfindungsgemäßen Beschichtungsmaterial hergestellt wird, ist bevorzugt eine Deckbeschichtung, das heißt jedenfalls die oberste Beschichtungsschicht, auch im Falle eines gegebenenfalls vorhandenen mehrschichtigen Beschichtungsaufbaus. Before application of the coating material according to the invention, the objects to be coated consisting of iron or steel can be cleaned by sandblasting or another suitable cleaning method. Advantageously, an adhesion primer is applied to improve the adhesion prior to the application of the coating material according to the invention. Suitable adhesion primers are epoxy resin coating compositions. The coating which is produced from the coating material according to the invention is preferably a topcoat, that is to say in any case the topmost coating layer, even in the case of an optionally present multilayer coating structure.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels näher beschrieben. In the following the invention will be described in more detail with reference to an embodiment.

Herstellung der Komponente A Preparation of component A

In einem vakuumierbaren, mit einem Rührer ausgestatteten Reaktionsgefäß werden 24,100 kg trifunktionelles Poly(Propylenoxid)Polyol (Molekulargewicht: 6000 g/mol Hydroxylzahl: 25-29 mg KOH/g), 13,650 kg Diphenylkresylphosphat, 0,400 kg Netz- und Dispergieradditiv (Handelsprodukt: BYK-W 980) und 0,100 kg Entschäumer (Handelsprodukt: Rhodoline DF 6420) gemischt und 5 Minuten bei 600 Umdrehungen/min gerührt. Hiernach wurden 32,500 kg Melaminphosphat zugegeben. Es wurde 10 Minuten unter Vakuum bei 2500 Umdrehungen/min dispergiert. Danach wurde die Drehzahl des Rührers auf 500 Umdrehungen/min reduziert. 1 1 ,000 kg aromatisches Diaminvernetzungsmittel auf Basis von Toluoldiamin (BAYTEC VP PU 30EL14) wurden zugegeben und es wurde 20 Minuten gerührt. Danach wurden 13,650 kg Diphenylkresylphosphat, 2,500 kg einer 25-prozentigen Lösung von Diazabicyclooctan in 1 ,4-Butandiol, 0,100 kg Bismuthcarboxylat, 1 ,300 kg weiße Pigmentpaste (Weißpigment in Rizinusöl) und 0,700 kg schwarze Pigmentpaste (Schwarzpigment in Rizinusöl) zugegeben. Abschließend wurde 30 Minuten unter Vakuum bei 700 Umdrehungen/min gerührt. In a vacuumable, equipped with a stirrer reaction vessel 24.100 kg of trifunctional poly (propylene oxide) polyol (molecular weight: 6000 g / mol hydroxyl number: 25-29 mg KOH / g), 13.650 kg Diphenylkresylphosphat, 0.400 kg wetting and dispersing additive (commercial product: BYK -W 980) and 0.100 kg defoamer (commercial product: Rhodoline DF 6420) mixed and stirred for 5 minutes at 600 revolutions / min. After that, 32,500 kg of melamine phosphate were added. It was dispersed under vacuum at 2500 rpm for 10 minutes. Thereafter, the speed of the stirrer was reduced to 500 revolutions / min. Toluene diamine-based aromatic diamine crosslinking agent (BAYTEC VP PU 30EL14) was added to 1, 000 kg and stirred for 20 minutes. Thereafter, 13.650 kg of diphenyl cresyl phosphate, 2.500 kg of a 25 percent solution of diazabicyclooctane in 1, 4-butanediol, 0.100 kg of bismuth carboxylate, 1, 300 kg of white pigment paste (white pigment in castor oil) and 0.700 kg of black pigment paste (black pigment in castor oil) were added. Finally, it was stirred under vacuum at 700 rpm for 30 minutes.

Herstellung der Komponente B Preparation of component B

44,000 kg Isomerengemisch von Diphenylmethandiisocyanat; Handelsprodukt Desmodur VP PU 0129, 0,100 kg Stabilisator P und 55,900 kg Polyol (Handelsprodukt: Desmophin 3600 Z) wurden zu einem Isocyanatpräpolymer mit einem NCO- Gehalt von 12,0 % umgesetzt. 44,000 kg isomeric mixture of diphenylmethane diisocyanate; Desmodur VP PU 0129 commercial product, 0.100 kg of stabilizer P and 55.900 kg of polyol (commercial product: Desmophin 3600 Z) were converted to an isocyanate prepolymer having an NCO content of 12.0%.

Herstellung des Beschichtungsmaterials Production of the coating material

Zur Herstellung des Beschichtungsmaterials wurden die Komponenten A und B im Volumenverhältnis 1 : 1 miteinander gemischt und unmittelbar danach mit einer 2K- Heißspritzanlage auf einen Radsatz für schienengebundene Fahrzeuge aufgebracht. Der Radsatz war zuvor mit einem Zinkstaub-Primer auf Epoxidharzbasis grundiert worden. Das aufgebrachte erfindungsgemäße Beschichtungsmaterial wurde gehärtet. Es resultierte eine Schichtdicke von 4 mm. For the preparation of the coating material, the components A and B were mixed with each other in a volume ratio of 1: 1 and applied immediately afterwards with a 2K hot spray unit on a wheelset for rail vehicles. The wheelset had previously been primed with an epoxy resin based zinc dust primer. The applied coating material according to the invention was cured. This resulted in a layer thickness of 4 mm.

Die Qualifizierung von Schutzschichten kann entsprechend der Norm DIN EN 13261 : 201 1 -01 durchgeführt werden. Diese Norm legt vier Schutzklassen hinsichtlich des Korrosions- und Schlagschutzes fest. Die mit dem erfindungsgemäßen Material beschichteten Radsätze wurden nach der genannten Norm geprüft. Die Beschichtung erfüllt alle Anforderungen der Schutzklasse 2. Entsprechend der Norm wurden die Dicke der Beschichtung, die Haftung der Beschichtung, die Stoßfestigkeit, die Beständigkeit gegenüber Strahlmittel, die Salzwasserbeständigkeit, die Beständigkeit gegen korrosive Medien und der Widerstand gegen zyklische mechanische Belastung geprüft. The qualification of protective coatings can be carried out according to the standard DIN EN 13261: 201 1 -01. This standard specifies four protection classes with regard to corrosion and impact protection. The wheel sets coated with the material according to the invention were tested according to the said standard. The coating meets all the requirements of protection class 2. According to the standard, the thickness of the coating, the adhesion of the coating, the impact resistance, the resistance to blasting agents, the salt water resistance, the resistance tested against corrosive media and resistance to cyclic mechanical stress.

Die erfindungsgemäße Beschichtung weist eine sehr gute Haftung und eine niedrige Glasübergangstemperatur aus. Der Versuch zur Bestimmung der Entflammbarkeit von Werkstoffen und ihrer Flammenausbreitungseigenschaften gemäß ISO 5658-2: 2006/Am1 : 201 1 erbrachte den erforderten Brandschutznachweis. Die Stoßfestigkeit der Beschichtung war auch bei - 45 ° C gegeben. The coating of the invention has a very good adhesion and a low glass transition temperature. The test to determine the flammability of materials and their flame propagation properties in accordance with ISO 5658-2: 2006 / Am1: 201 1 provided the required fire protection proof. The impact resistance of the coating was also given at -45 ° C.

Auch die nach der neuen Anforderung der TSI (Technischen Spezifikation für Interoperabilität) einzuhaltenden Bestimmungen nach DIN EN 45545-2 wurden erfüllt. The requirements according to the new requirement of the TSI (Technical Specification for Interoperability) according to DIN EN 45545-2 have also been met.

Als Vergleich wurde die aus der Patentanmeldung WO 2012/152870 A1 , Seite 8, Z 3-14 bekannte Radsatzbeschichtung (gehärtete Schichtdicke hier 4 mm) untersucht. Die Beschichtung erfüllte nicht die Anforderungen nach der Norm DIN EN 13261 . As a comparison, the wheelset coating known from the patent application WO 2012/152870 A1, page 8, Z 3-14 (hardened layer thickness here 4 mm) was investigated. The coating did not meet the requirements of the standard DIN EN 13261.

Zudem wurde lediglich ein Brandschutznachweis nach DIN EN 54837 erbracht. Die Anforderungen der nunmehr einschlägigen Norm DIN EN 45545-2 wurden nicht erfüllt. In addition, only a fire protection certificate according to DIN EN 54837 was provided. The requirements of the now relevant standard DIN EN 45545-2 were not met.

Claims

Patentansprüche: claims: 1 . Zwei-Komponenten-Polyurethanbeschichtungsmaterial, umfassend eine erste Komponente A und eine zweite Komponenten B, dadurch gekennzeichnet, dass die Komponente A 1 . Two-component polyurethane coating material comprising a first component A and a second component B, characterized in that component A 18,5 bis 50 Gew.-% mindestens eines Polyether- und/oder Polyesterpolyols mit einem zahlenmittleren Molekulargewicht von 1500 bis 10000 g/mol und einer Hydro- xyl-Zahl von 20 bis 60,  From 18.5 to 50% by weight of at least one polyether and / or polyester polyol having a number-average molecular weight of from 1500 to 10000 g / mol and a hydroxyl number of from 20 to 60, 35 bis 80 Gew.-% mindestens eines Flammschutzmittel,  From 35 to 80% by weight of at least one flame retardant, 1 bis 25 Gew.-% mindestens eines aromatischen Diamins, From 1 to 25% by weight of at least one aromatic diamine, 0,01 bis 3,0 Gew.-% mindestens eines aminischen Katalysators, und 0.01 to 3.0 wt .-% of at least one amine catalyst, and 0,05 bis 2,0 Gew.-% mindestens eines Metall-haltigen Katalysators für die Polyurethanbildung, 0.05 to 2.0 wt .-% of at least one metal-containing catalyst for the polyurethane formation, wobei die gewichtsprozentualen Angaben auf die Gesamtmasse der Komponente A bezogen sind, enthält, wherein the weight percentages are based on the total mass of component A contains, und and die Komponente B the component B mindestens ein Isocyanat-Präpolymer mit einem Isocyanatgehalt von 6 bis 20 % enthaltend, in umgesetzter Form, mindestens ein aromatisches Diisocyanat und mindestens einen hydroxylgruppenhaltigen Polyether und/oder hydroxylgruppenhal- tigen Polyester, enthält. containing at least one isocyanate prepolymer having an isocyanate content of 6 to 20%, in reacted form, at least one aromatic diisocyanate and at least one hydroxyl-containing polyether and / or hydroxylgruppenhal- term polyester. 2. Beschichtungsmatenal nach Anspruch 1 , dadurch gekennzeichnet, dass als Flammschutzmittel Diphenylkresylphosphat und Melaminphosphat oder Mela- mincyanurat eingesetzt wird und das Gewichtsverhältnis Diphenylkresylphosphat : Melaminphosphat beziehungsweise Melamincyanurat von 1 : 0,75 bis 1 : 3 beträgt. 2. Beschichtungsmatenal according to claim 1, characterized in that as flame retardants diphenyl cresyl phosphate and melamine phosphate or melamine is used and the weight ratio of diphenyl cresyl phosphate: melamine phosphate or melamine cyanurate of 1: 0.75 to 1: 3. 3. Beschichtungsmatenal nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das mindestens eine Polyether- und/oder Polyesterpolyol ein zahlenmittleres Molekulargewicht von 2000 bis 9000 g/mol, insbesondere 5000 bis 7000 g/mol aufweist und eine OH-Zahl von 22 bis 56, bevorzugt von 24 bis 30 hat. 3. Beschichtungsmatenal according to claim 1 or 2, characterized in that the at least one polyether and / or polyester polyol has a number average molecular weight of 2000 to 9000 g / mol, in particular 5000 to 7000 g / mol and an OH number of 22 to 56 , preferably from 24 to 30. 4. Beschichtungsmatenal nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass das mindestens eine Polyether- und/oder Polyesterpolyol ein Polyetherpolyol ist. 5. Beschichtungsmatenal nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass das aromatische Diamin ein Isomerengemisch von 3,5-Diethyltoluol-2,4-Diamin und 3,4. Beschichtungsmatenal according to claim 1 to 3, characterized in that the at least one polyether and / or polyester polyol is a polyether polyol. 5. Beschichtungsmatenal according to claim 1 to 4, characterized in that the aromatic diamine is a mixture of isomers of 3,5-diethyltoluene-2,4-diamine and 3, 5- Diethyltoluol-2,6-Diamin ist. 5-diethyltoluene-2,6-diamine. 6. Beschichtungsmatenal nach Anspruch 1 bis 5, dadurch gekennzeichnet, dass das Mischungsverhältnis Komponente A : Komponente B so ist, dass das molare Verhältnis der Isocyanat-reaktiven Gruppen der Komponente A zu den Isocyanatgrup- pen der Komponente B 1 : 1 bis 1 : 1 ,1 beträgt. 6. Beschichtungsmatenal according to claim 1 to 5, characterized in that the mixing ratio of component A: component B is such that the molar ratio of the isocyanate-reactive groups of component A to the Isocyanatgrup- pen of component B 1: 1 to 1: 1 , 1 is. 7. Beschichtungsmatenal nach Anspruch 1 bis 6, dadurch gekennzeichnet, dass der mindestens eine aminische Katalysator eine diaminische organische Verbindungen mit ausschließlich tertiären und damit aprotischen und nicht reaktiven Aminogrup- pen, bevorzugt Diazabicyclooctan (DABCO), ist. 7. Beschichtungsmatenal according to claim 1 to 6, characterized in that the at least one amine catalyst is a diaminische organic compounds with exclusively tertiary and thus aprotic and non-reactive amino groups, preferably diazabicyclooctane (DABCO), is. 8. Beschichtungsmatenal nach Anspruch 1 bis 7, dadurch gekennzeichnet, dass der oder die Metall-haltigen Katalysatoren für die Polyurethanbildung organometallische Verbindungen und/oder Metallcarboxylate sind. 8. Beschichtungsmatenal according to claim 1 to 7, characterized in that the one or more metal-containing catalysts for polyurethane formation organometallic compounds and / or metal carboxylates. 9. Beschichtungsmatenal nach Anspruch 1 bis 8, dadurch gekennzeichnet, dass das Isocyanat-Präpolymer, in umgesetzter Form, mindestens ein aromatisches Diisocya- nat und mindestens einen hydroxylgruppenhaltigen Polyether, enthält und einen Isocyanatgehalt von 8 bis 16 % aufweist. 9. Beschichtungsmatenal according to claim 1 to 8, characterized in that the isocyanate prepolymer, in reacted form, at least one aromatic diisocyanate Natat and at least one hydroxyl-containing polyether, contains and has an isocyanate content of 8 to 16%. 10. Verfahren zum Beschichten von Radsätzen, Drehgestellen und Untergestellen für schienengebundene Fahrzeuge, Eisenbahnschienen und Teilen der genannten Gegenstände durch Aufbringen und Härten des Beschichtungsmaterials nach Anspruch 1 bis 9. 10. A method for coating wheelsets, bogies and bases for rail vehicles, railroad tracks and parts of said objects by applying and curing the coating material according to claim 1 to 9. 1 1 . Radsätze, Drehgestelle und Untergestelle für schienengebundene Fahrzeuge, Eisenbahnschienen und Teile der genannten Gegenstände, dadurch gekennzeichnet, dass sie mindestens teilweise mit einem gehärteten Beschichtungsmatenal nach Anspruch 1 bis 9 beschichtet sind. 1 1. Wheelsets, bogies and bases for rail vehicles, railroad tracks and parts of said objects, characterized in that they are at least partially coated with a hardened Beschichtungsmatenal according to claim 1 to 9. 12. Verfahren nach Anspruch 10 oder Radsätze, Drehgestelle und Untergestelle sowie Teile davon nach Anspruch 1 1 , dadurch gekennzeichnet, dass die Beschich- tung aus dem Beschichtungsmatenal gemäß Anspruch 1 bis 9 die Deckbeschichtung darstellt. 12. The method of claim 10 or wheelsets, bogies and bases and parts thereof according to claim 1 1, characterized in that the coating from the coating material according to claim 1 to 9 is the topcoat.
PCT/EP2017/079006 2016-12-05 2017-11-13 Two-component polyurethane coating material, coating method and coated parts Ceased WO2018104003A1 (en)

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Publication number Priority date Publication date Assignee Title
CN110563909A (en) * 2019-09-03 2019-12-13 四川睿铁科技有限责任公司 restrictive pouring modified polyurethane resin for guide rail of guide rail electric car and preparation method thereof

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WO2012152870A1 (en) 2011-05-10 2012-11-15 Basf Coatings Gmbh Wheelsets for rail vehicles or parts of wheelsets for rail vehicles and method for coating

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO2012152870A1 (en) 2011-05-10 2012-11-15 Basf Coatings Gmbh Wheelsets for rail vehicles or parts of wheelsets for rail vehicles and method for coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110563909A (en) * 2019-09-03 2019-12-13 四川睿铁科技有限责任公司 restrictive pouring modified polyurethane resin for guide rail of guide rail electric car and preparation method thereof

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