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
  • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
  • C09D183/10—Block or graft copolymers containing polysiloxane sequences
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
• • 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
  • C08G18/24—Catalysts containing metal compounds of tin
  • C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
  • C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
• • 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
• • 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
  • C08G18/3203—Polyhydroxy compounds
  • C08G18/3206—Polyhydroxy compounds aliphatic
• • 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
  • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
  • C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
  • C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
  • C08G18/6225—Polymers of esters of acrylic or methacrylic acid
• • 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
  • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
  • C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
  • C08G18/625—Polymers of alpha-beta ethylenically unsaturated carboxylic acids; hydrolyzed polymers of esters of these acids
  • C08G18/6254—Polymers of alpha-beta ethylenically unsaturated carboxylic acids and of esters of these acids containing 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
  • C08G18/67—Unsaturated compounds having active hydrogen
  • C08G18/671—Unsaturated compounds having only one group containing active hydrogen
  • C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
• • 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
  • C08G18/71—Monoisocyanates or monoisothiocyanates
  • C08G18/718—Monoisocyanates or monoisothiocyanates containing silicon
• • 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
  • C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
• • 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
  • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
  • C08G18/78—Nitrogen
  • C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
  • C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
  • C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
• • 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
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
  • C09D5/03—Powdery paints

Definitions

• the invention relates to a method for producing a highly abrasion-resistant vehicle paint, a vehicle paint and its use.
• Silane coatings are known that are made of silicone resins.
• building block molecules such as dimethylsiloxane or otherwise organically modified homologous species are precondensed until high molecular weight resins are present. These can then be hardened by commercially available starters. Such systems are used as coatings, building preservatives, sealants, etc.
• silanes with two organically modified side chains are generally used. These coating systems have high temperature resistance, but usually show only moderate abrasion resistance.
• silanes such as tetraethoxysilane (TEOS) or methyltriethoxysilane (MTEOS), but also organically modified silanes such as glycidoxypropyltriethoxysilane (GPTES, glyeo) or methacrylpropyltrimethoxysilane (MPTS), etc. hydrolyzed in the presence of a catalyst with water and precondensed.
• TEOS tetraethoxysilane
• MTEOS methyltriethoxysilane
• GPTES glycidoxypropyltriethoxysilane
• MPTS methacrylpropyltrimethoxysilane
• Scratch-resistant coating compositions with high rubber elasticity as a topcoat, in particular as a clearcoat for OEM OEM finishing are described, for example, in WO 2006/042658 A1 by reacting isocyanates (HDI) with amino-functional silanes, which are crosslinked, for example, with appropriate catalysts, which, however, only be dissolved in aprotic solvents or aprotic solvent mixtures.
• HDI isocyanates
• EP 540 884 A1 describes a process for the preparation of silicone-containing clearcoats for multicoat painting using free-radically and / or cationically polymerizable. The drying takes place under UV light. The clearcoats have good scratch resistance. Details on the scratch resistance are not made.
• EP 468 967 A1 describes a process for the production of OEM series paint using radiation-curable clearcoats.
• DE 101 52 853 A1 describes a thermally curable coating composition of an epoxy silane which is prehydrolyzed and subsequently reacted with a blocked isocyanate. Aprotic solvents are used.
• the main application is the "Easy to Clean" coating of metals, where the curing temperature is determined by the deblocking temperature ( ⁇ 100 ° C) of the organic isocyanate components.
• EP 675 087 A1 likewise describes a coating composition of epoxysilane (hydrolyzed), silica sol, dimethyldimethoxysilane and fluorosilane which is used, for example, as a hydrophobic, oleophobic and abrasion-resistant layer for glass.
• the abrasion resistance of the layers is not specified more precisely.
• the use for automotive OEM painting is questionable, in particular due to the fluorine content in terms of recoatability and repairability.
• the applied layer thicknesses are outside of the usual top coats of the series coating at 0.1-10 microns.
• DE 10 2004 050 747 A1 describes an overview of the most varied patents in the prior art. The formulations described are limited to use in OEM painting; However, high demands on scratch resistance, chemical resistance and weathering stability are not met.
• scratch-resistant coating materials often have a high crosslinking density and are therefore not very well storable or crosslink only incomplete or are no longer flexible enough at the required layer thicknesses of> 20 microns or> 40 microns, which leads to cracking.
• the object of the invention is thus to provide a vehicle paint with extremely high scratch and chemical resistance, especially for use in the multi-layer finish for OEM OEM paint (especially as clearcoat or basecoat), which the state of the art with respect to scratch resistance (high wash resistance) and Chemical resistance (acid / base stability) far exceeds, without affecting other properties, which must be met for the series coating.
• These criteria include, for example:
• the present invention is also based on the object of developing a process for the production of extremely scratch-resistant formulations which are suitable for OEM series coating, without impairing other required properties of the layers.
• the coating compositions used in this process should simultaneously have good storage stability (at least 8 weeks when stored at 50 ° C.) and lead to coatings which, in addition to high scratch resistance, have high chemical resistance, good moisture resistance and good polishability.
• These coating compositions should furthermore be suitable as a clearcoat and / or topcoat for producing a multicoat paint system, in particular in the motor vehicle sector.
• the cured formulations should have good weather resistance, good acid / base resistance and good resistance to bird droppings, etc., high gloss and good visual appearance.
• the coating formulations for OEM series painting should be suitable both for use as topcoat (for the application of so-called two-layer constructions, consisting of coloring basecoat and over it in the wet-on-wet process applied clearcoat as 4th or 5th layer) or as a basecoat as 3rd layer with the appropriate pigmentation (eg as a filler substitute as 2nd layer) or for use as a single-coat system (pigmented topcoat) be suitable.
• a. Providing at least one organic monomer, oligomer, prepolymer or organosilane having one or more organic functional groups, or mixtures thereof, b. Saturate the in a. described functional groups by reaction with silanes with organic side chains containing one or more corresponding functional groups, wherein the resulting silane has at least six SiOR groups and a molecular weight of more than 300, c. Absorption of the resulting macromolecular silanes in solvents, preferably protic or aprotic solvents or mixtures thereof, d. Addition of reactants, in particular acids, Lewis acids, bases or Lewis bases, e. Applying the resulting vehicle paint to a substrate and f. Hardening of the coating material.
• a. Providing at least one organic monomer, oligomer, prepolymer or organosilane having one or more organic functional groups, or mixtures thereof, b. Saturate the in a. described functional groups by reaction with silanes with organic side chains containing one or more corresponding functional groups, wherein the resulting silane has at least six SiOR groups and a molecular weight of more than 300, c. Addition of additives to the resulting macromolecular silanes, d. Further processing of the product as a powder clearcoat.
• the resulting higher molecular weight silanes can namely also be obtained as solids and these can be further processed after the addition of additives as a powder clearcoat (by melting). Of course, then the powder can also be dissolved in a suitable solvent and then processed further.
• the organic functional groups are amino, hydroxyl, epoxy, mercaptan, carboxylic acid, anhydride, oxime, isocyanate, thioisocyanate, methacrylic, acrylic or vinyl groups.
• the stoichiometric corresponding groups are in particular hydroxy and isocyanate, isocyanate and amino, carboxylic acid and isocyanate, carboxylic acid and hydroxy, anhydride and isocyanate, epoxy and amine, isocyanate and epoxy, hydroxy and epoxy.
• the organic functional groups of the organic monomer, oligomer, prepolymer or organosilane may also be, for example, acrylate, methacrylate or vinyl groups.
• silanes can be used with organic side chains containing unsaturated CC bonds. These include, for example, methacryloxpropyltrimethoxysilane, acryloxpropyltrimethoxysilane, vinyltrimethoxysilane or the corresponding ethoxy or acetoxy variants of these silanes.
• the polymerization takes place either at room temperature, thermally induced or using actinic radiation (eg UV radiation).
• actinic radiation eg UV radiation
• the temperature-induced polymerization of said organic compounds and silanes is carried out with radical or ion initiators, which are known in the art.
• radical or ion initiators which are known in the art.
• inorganic or organic peroxide compounds such as cyclohexyl peroxydicarbonate (CHPC) or dicumyl peroxide and azo compounds such as azo-bis-isobutyronitrile (AIBN) mentioned.
• the functional and corresponding unsaturated CC bonds can be carried out by UV irradiation of the reaction mixture in a suitable reaction vessel.
• Starters may use typical radiation-sensitive substances (reaction initiators) such as 1-hydroxycyclohexyl-phenyl-ketone or other commercial products.
• the functional and corresponding groups in the case of radical reaction in each case represent unsaturated carbon-carbon bonds, in particular acrylate, methacrylate or vinyl groups with unsaturated carbon-carbon double bonds.
• unsaturated carbon-carbon bonds in particular acrylate, methacrylate or vinyl groups with unsaturated carbon-carbon double bonds.
• the monomers, oligomers or prepolymers contain functionalized hydrocarbons, fluorohydrocarbons, polyesters, polyethers, polyurethanes, polyamides, polyanilines, polyimides, polyphenols, polysulfamides, imide, polyacrylate, polyurethane acrylate, polyester acrylate, thiols, polyether acrylates, polyester acrylates, amino-functional acrylates, Phenols, phenolic resins, melamine or methacrylates are.
• pigments are added before the application of the vehicle paint.
• the formulations can also be pigmented.
• the pigments are surprisingly firmly bound and stabilized by the inorganic surface functionalization by the binder and can thereby be firmly bound without risk of chalking (for example due to aging or abrasion).
• step c As additives organic or inorganic UV absorbers, matting agents, Netzdispergierstoff, HALS stabilizers, radical scavengers, defoamers, waxes, biocides, preservatives, inorganic or organic fillers, fluorocarbon particles or waxes are added.
• organic or inorganic UV absorbers matting agents, Netzdispergierstoff, HALS stabilizers, radical scavengers, defoamers, waxes, biocides, preservatives, inorganic or organic fillers, fluorocarbon particles or waxes are added.
• the molecular weight of the silane or silanes is greater than 300, preferably greater than 500 and particularly preferably greater than 1000.
• silanes are: 3-acryloxypropylmethoxysilane, 3-acryloxypropyltriethoxysilane, 3-aminopropyltriethoxysilane, aminoethylaminopropyltrimethoxysilane, aminoethylaminopropyltrimethoxysilane, aminoethylaminopropylsilane, 3-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxy-silane, N-cyclohexy-1,3-aminopropyl-1-trimethoxy-silane, benzylaminoethylaminopropyltrimethoxysilane
• Phenylaminomethyltrimethoxysilane (methacryloxymethyl) methyldimethoxysilane, methacryloxymethyltrimethoxysilane, (methacryloxymethyl) methyldiethoxysilane, methacryloxymethyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane,
• Methacryloxypropyl triacetoxy silane (isocyanatomethyl) methyldirnethoxy silane, 3-isocyanatopropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, 3-trimethoxy-silylmethyl-O-methylcarbamate, N-dimethoxy- (methyl) silylmethyl-O-methyl-carbamate, 3
• a development of the invention consists in that the silane or silanes in organic side chains have polarized groups which are suitable for the formation of hydrogen
• the vapor pressure of the silane or silanes is less than 2, preferably less than 1 and more preferably less than 0.5 hPa at 20 ° C.
• the silane or silanes undergo an organic crosslinking reaction with homologous or non-homologous silanes or with organic monomers, oligomers or polymers.
• the organic molecular weight is greater than the inorganic molecular weight.
• the silane or silanes are pre-crosslinked to a maximum of 5%, preferably at most 1%, and particularly preferably not inorganically.
• reaction partners up to 20%, preferably 0.5 to 50%, Lewis acids or Lewis bases, in particular in the form of transition metal complexes, salts or particles, preferably micro- or nanoparticles, are used as reaction partners.
• transition metal complexes, salts or particles are titanium, aluminum, tin or zirconium complexes.
• a development of the invention consists in that particles, in particular micro-, sub-micro- or nanoparticles, are added as fillers. It is also part of the invention that alcohols, acetates, ethers, low molecular weight silanes or metal alkoxides, in particular zirconium butylate, aluminum butylate, titanium butylate, are used as reactive diluents as solvent in step c.
• the invention provides that the coating material is wet-chemically, in particular by spraying, dipping, flooding, rolling, brushing, printing, spinning, knife coating or by evaporation in a vacuum applied to a substrate.
• the coating material is applied to a substrate by powder coating.
• the coating material can be applied to a conventionally used KTL, filler and basecoat composition in the automotive industry, as well as for the application to be applied directly to a colored filler.
• the coating material can also be used as a plastic varnish primer, basecoat or clearcoat or as an additive to standard clearcoats.
• the substrate consists of metal, plastic, ceramic, lacquer, rubber, on glass or composite materials.
• the coating material after application at temperatures from room temperature to 1200 ° C, preferably from room temperature to 250 ° C is cured, wherein the curing is preferably carried out thermally, with microwave radiation or UV radiation.
• vehicle paint prepared by a method according to the invention and the use of the vehicle paint according to the invention as a clearcoat (topcoat), pigmented paint (basecoat), surfacer coat, refinish or powder paint for vehicle bodies, especially automobile or motorcycle bodies, vehicle parts, especially automobile - or motorcycle parts, as well as installation, attachment, accessory or spare parts for vehicles, especially rims, bumpers, panels or moldings.
• vehicles in this sense are land, water and air vehicles understood, ie in particular passenger cars and trucks, buses, motorcycles, rail vehicles, ships and aircraft.
• the vehicle paint according to the invention can thus be used as the 2nd, 3rd, 4th or 5th layer within the paint structure and is suitable for both metal and plastic parts and parts made of other materials.
• the coating material according to the invention can also be used as an additive to commercial clearcoat systems.
• the formulation is then treated with 13.9g TINUVIN 152 (50% in pentyl acetate), 13.9g TINUVIN 292 (50% in pentyl acetate), 2g Byk 301 (Byk Chemie), 0.832g Tego Flow 370 (Tego) and 0.832g Byk 088 (Byk Chemie) added.
• the abrasion resistance was determined using a washability and abrasion tester (Erichsen) and the corresponding nonwoven abrasive material (3M Scotch Brite No. 7448) as the abrasive medium.
• the gloss level was compared before and after 500 cycles of loading the coated and uncoated plates. The uncoated side is visibly very scratched according to the test procedure.
• the percentage residual gloss was determined in comparison to the initial gloss of the surfaces. The measurement revealed that the coated area showed no significant loss of gloss. At the same time, the coating proved to be chemically very resistant with an excellent visual appearance ("appearance").
• the layers are also polishable. Chemical resistance was tested as follows:
• test plate in the gradient oven and at different temperatures (depending on the test substance) heated. Thereafter, various test substances are dropped on. After 30 minutes, the samples are cleaned under running water and dried. Thereafter, changes occurring after 24 hours storage were assessed. Before the evaluation, the samples were again cleaned with ethanol and dried.
• the pigment Bayferrox 120 NM (Bayer) was 1: 1 with a solvent mixture consisting of butyl glycol (Solvadis), DPM dipropylene glycol monomethyl ether and diethylene glycol monoethyl ether (ratio 1: 1: 1) and up to 40 wt .-% with respect to the solids content of the paint formulation under Example 1 added. This was followed by the addition of 1% Tegokat 226 (Goldschmidt). The pigmented basecoat thus prepared was then applied to a steel sheet with filler layer by spraying and dried at 80 ° C for 30 min.
• test panels show a glossy to slightly matt surface.
• the scratch resistance was checked with a key. This was done with a key scratched moderately to strong over the surface. Afterwards, only a barely visually noticeable mark appeared on the surface.
• TMP trimethylolpropane Fluka
• Onichem 3-isocyanatopropyltriethoxysilane
• DBTL 3-isocyanatopropyltriethoxysilane
• the mixture is cooled to 60 ° C. after about 30 minutes and diluted directly with 815.8 g of 1-methoxy-2-propanol (Solvadis). Thereafter, the mixture is treated with 1% of 5% sulfuric acid.
• the test sheet shows excellent steel wool resistance and adhesion
• the mixture is sprayed onto an already ground sheet with a commercial clearcoat and dried at room temperature.
• the treated areas showed no visual impairment and excellent adhesion even after 7 h condensation test at 40 ° C.
• the material is flooded onto a polyester topcoat and dried at 130 ° C for 20 minutes. This gives a clear abrasion-resistant surface coating.
• the materials from the o.g. Examples are sprayed on a white basecoat and dried at 130 ° C for 20 min. This gives a clear abrasion-resistant surface coating.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (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)
• Application Of Or Painting With Fluid Materials (AREA)

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• 2009
  • 2009-03-18 RU RU2010142296/05A patent/RU2516736C2/ru not_active IP Right Cessation
  • 2009-03-18 WO PCT/DE2009/000351 patent/WO2009115079A1/de active Application Filing
  • 2009-03-18 US US12/736,181 patent/US20110082254A1/en not_active Abandoned
  • 2009-03-18 MX MX2010010182A patent/MX2010010182A/es unknown
  • 2009-03-18 EP EP09722851A patent/EP2254960A1/de not_active Withdrawn
  • 2009-03-18 CA CA2718967A patent/CA2718967A1/en not_active Abandoned
  • 2009-03-18 JP JP2011500039A patent/JP2011514255A/ja active Pending
  • 2009-03-18 KR KR1020107023067A patent/KR20100125413A/ko not_active Application Discontinuation
  • 2009-03-18 CN CN2009801142257A patent/CN102015935A/zh active Pending
  • 2009-03-18 BR BRPI0910266A patent/BRPI0910266A2/pt not_active IP Right Cessation
• 2010
  • 2010-09-17 ZA ZA2010/06705A patent/ZA201006705B/en unknown

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