EP3887423A1 - Polyisocyanatzusammensetzung für beschichtungen - Google Patents
Polyisocyanatzusammensetzung für beschichtungenInfo
- Publication number
- EP3887423A1 EP3887423A1 EP19805971.9A EP19805971A EP3887423A1 EP 3887423 A1 EP3887423 A1 EP 3887423A1 EP 19805971 A EP19805971 A EP 19805971A EP 3887423 A1 EP3887423 A1 EP 3887423A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polyisocyanate
- weight
- diisocyanate
- polyisocyanate composition
- mixture
- 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.)
- Pending
Links
Classifications
-
- 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
- C08G18/02—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
- C08G18/022—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only the polymeric products containing isocyanurate 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
- C08G18/40—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
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
-
- 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
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/722—Combination of two or more aliphatic and/or cycloaliphatic polyisocyanates
-
- 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
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
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- 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
- C09D175/02—Polyureas
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- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
Definitions
- the invention relates to a polyisocyanate composition based on pentamethylene diisocyanate.
- the invention further relates to a method for producing the polyisocyanate composition according to the invention and the use of the polyisocyanate composition according to the invention as a crosslinking agent in a coating composition.
- the invention also relates to the use of pentamethylene diisocyanate to increase the chemical resistance of the coating obtained.
- the invention also relates to a two-component system comprising the polyisocyanate composition according to the invention, coatings produced from the two-component system and the substrates coated therewith. In coatings, particularly in the automotive industry, both scratch resistance and chemical resistance of the coatings are important properties.
- the Amtec Kistler laboratory car wash and the gradient oven method have established themselves as recognized methods in Europe for testing scratch resistance.
- Amtec Kistler GmbH uses a laboratory car wash. This laboratory washing system is based on an original washing system in terms of its proportions (amount of water, speed of rotation of the brushes, brush material, relative movements).
- Polyurethane coatings have been known for a long time.
- coatings made of aliphatic polyisocyanates and polyols such as polyacrylate polyols, polyester polyols or polycarbonate polyols are used.
- high-quality coatings particularly low-monomer derivatives made from hexamethylene diisocyanate (HDI) are used as polyisocyanates.
- HDI hexamethylene diisocyanate
- Particularly suitable for elastic, highly resistant coatings are HDI isocyanurate polyisocyanates or HDI polyisocyanates containing iminooxadiazinedione and isocyanurate structures, as described, for example, in US Pat. B. H. J. Laas, R.
- polyisocyanates generally have isocyanate functionalities (FNCO) of 3 or more, isocyanate functionality being understood to mean the average number of NCO groups per molecule.
- FNCO isocyanate functionalities
- 1,5-pentamethylene diisocyanate has also long been known as a monomer, for example from W. Siefken, Liebigs Ann. Chem. 1949, 562, page 122 or in DE 1493360 B1 and DE 1900514 Al.
- EP 0 693 512 A1 describes the use of special mixtures of HDI-based polyisocyanates which, owing to a proportion of uretdione structures and cycloaliphatic isocyanurate polyisocyanates, have improved elasticity and tear strength compared to lacquers crosslinked solely by HDI polyisocyanate. However, it is not disclosed what the chemical resistance of these lacquers to environmental influences is.
- DE 197 52 691 discloses the use of a polyisocyanate mixture based on 2-methyl-1,5-pentane diisocyanate in combination with isophorone diisocyanate (IPDI).
- IPDI isophorone diisocyanate
- 2-methyl-l, 5-pentane diisocyanate is not available in a commercially relevant amount and is therefore not a practical substitute for HDI polyisocyanates.
- WO 96/40828 A1 discloses non-aqueous dispersions, particularly suitable for use as “enamel” automotive coatings, with the task of reducing the proportion of volatile organic compounds.
- Polyisocyanates are described as crosslinking agents for alkyd resins, only pure IPDI isocyanurate being used in the examples and no comparisons with other isocyanates possible.
- a disadvantage of pure IPDI isocyanurates, however, is that they have too little flexibility in coatings.
- the object of the present invention was therefore to provide a polyisocyanate composition from which flexible coatings can be obtained which, compared to the systems known in the prior art based on HDI or 2-methyl-1,5-pentane diisocyanate, have a higher chemical resistance with constant scratch resistance towards sodium hydroxide solution and / or pancreatin.
- a polyisocyanate composition comprising a mixture of> 60% by weight, based on the total weight of the mixture, of at least one polyisocyanate based on pentamethylene diisocyanate and ⁇ 40% by weight, based on the total weight of the mixture, at least one polyisocyanate based on a cycloaliphatic diisocyanate and / or at least one polyisocyanate based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate, the polyisocyanate composition having a residual monomer content of monomeric diisocyanates below 0.5% by weight, based on the total weight of the polyisocyanate composition.
- pentamethylene diisocyanate in the polyisocyanate composition advantageously made it possible to reduce the proportion of cycloaliphatic diisocyanates without the scratch resistance deteriorating. In this way, improved chemical resistance can be achieved and the flexibility is retained.
- references to “comprising”, “containing” etc. preferably mean “essentially consisting of” and very particularly preferably “consisting of”.
- the further embodiments mentioned in the patent claims and in the description can be combined in any way, unless the context clearly indicates the opposite.
- the mixture contains> 70% by weight, preferably> 75% by weight and particularly preferably> 80% by weight, based on the total weight of the mixture, of the at least one polyisocyanate based on pentamethylene diisocyanate and 100% by weight of missing portions each consist of the at least one polyisocyanate based on a cycloaliphatic diisocyanate and / or the at least one polyisocyanate based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate, preferably consist of the at least one polyisocyanate based on a cycloaliphatic diisocyanate or the at least one polyisocyanate based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate and particularly preferably consist of the at least one polyisocyanate based on a cycloaliphatic diisocyanate.
- this has the advantage that the chemical resistance is further improved without
- the polyisocyanates based on pentamethylene diisocyanate are any oligomeric polyisocyanates obtainable by modifying pentamethylene diisocyanate (PDI) with uretdione, isocyanurate, allophanate, biuret, iminooxadiazinedione and / or oxadiazinetrione structure or any mixture of such polyisocyanates.
- PDI pentamethylene diisocyanate
- the content of isocyanurate trimer can be adjusted by carrying out the reaction accordingly, so the trimerization reaction is preferably terminated after the desired content of isocyanurate trimer has been reached. This can be done, for example, by cooling the reaction mixture to room temperature. In general, however, the reaction is carried out by adding one or more catalyst poisons known to the person skilled in the art and, if appropriate, the following brief heating of the reaction mixture ended, for example, to a temperature above 80 ° C.
- polyisocyanate based on pentamethylene diisocyanate means that pentamethylene diisocyanate> 50% by weight, preferably> 70% by weight, particularly preferably> 90% by weight and very particularly preferably 100% by weight of the total for the Make up monomeric diisocyanates used polyisocyanate. This has the further advantage that the chemical resistance of the coatings obtained is further improved.
- the proportion which is 100% by weight can be composed of any aliphatic, araliphatic and / or aromatic diisocyanates other than pentamethylene diisocyanate, monomeric diisocyanates suitable for this purpose being in particular those of the molecular weight range 140 to 400, such as 1,4-diisocyanatobutane, 1,1 6-hexamethylene diisocyanate, 2-methyl
- the PDI used to produce the polyisocyanates based on pentamethylene diisocyanate can be prepared in various ways, for example by phosgenation in the liquid or gas phase or by a phosgene-free route, such as, for. B. by thermal urethane cleavage, starting from preferably obtained biotechnologically by decarboxylation of the naturally occurring amino acid lysine pentamethylene diamine (PDA).
- PDA amino acid lysine pentamethylene diamine
- the production of PDI from PDA by phosgenation in the gas phase is particularly preferred.
- the above-mentioned further diisocyanates can be prepared by various known methods, for example by phosgenation in the liquid or gas phase or by a phosgene-free route, such as, for. B. by thermal urethane cleavage can be obtained.
- the polyisocyanates based on a cycloaliphatic polyisocyanate are any oligomeric polyisocyanates obtainable by modifying suitable monomeric cycloaliphatic diisocyanates with uretdione, isocyanurate, allophanate, biuret, iminooxadiazinedione and / or oxadiazinetrione structure or any mixtures of such polyisocyanates.
- These polyisocyanates are prepared by methods known per se for isocyanate oligomerization, as described, for example, in J. Prakt. Chem.
- 336 (1994) 185-200 are described by way of example by reacting part of the isocyanate groups of the monomeric diisocyanates to form polyisocyanate molecules which consist of at least two diisocyanate molecules and one itself usually subsequent distillative or extractive separation of the unreacted monomeric diisocyanates.
- Polyisocyanates can be prepared from various monomeric diisocyanates by known methods, as is known, for example, from EP 47452 A1.
- the mixture contains the
- Polyisocyanate composition > 1% by weight, preferably> 2% by weight, particularly preferably> 5% by weight, very particularly preferably> 10% by weight and most preferably> 20% by weight, based on the total weight of the Mixture of the at least one polyisocyanate based on a cycloaliphatic diisocyanate and / or the at least one polyisocyanate based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate, preferably the at least one polyisocyanate based on a cycloaliphatic diisocyanate.
- Polyisocyanate composition > 1% by weight, preferably> 2% by weight, particularly preferably> 5% by weight, very particularly preferably> 10% by weight and most preferably> 20% by weight, based on the total weight of the Mixture of the at least one polyisocyanate based on a cycloaliphatic diisocyanate or the at least one polyisocyanate based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate, preferably the at least one polyisocyanate based on a cycloaliphatic diisocyanate.
- “based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate” means that the at least one cycloaliphatic diisocyanate is> 50% by weight, preferably> 60% by weight, particularly preferably> 70% by weight of the total monomeric diisocyanates used. This has the further advantage that the resistance to mechanical stress is further improved.
- the proportion which is 100% by weight can consist of any cycloaliphatic diisocyanates listed above other than pentamethylene diisocyanate.
- based on a cycloaliphatic diisocyanate means that> 50% by weight, preferably> 70% by weight, particularly preferably> 90% by weight and very particularly preferably 100% by weight of the cycloaliphatic monomers used overall Diisocyanates consist of a certain cycloaliphatic monomeric diisocyanate.
- the proportion which is 100% by weight can be composed of any cycloaliphatic diisocyanates other than this cycloaliphatic diisocyanate, suitable for this monomeric diisocyanates, in particular those of the molecular weight range 140 to 400, such as 1,3- and 1,4-diisocyanatocyclohexane, 2,4- and 2,6-diisocyanato-l-methylcyclohexane, 1,3- and 1,4- Bis- (isocyanatomethyl) cyclohexane, l-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (isophorone diisocyanate, IPDI), 4,4'-diisocyanatodicyclohexylmethane, 2,4'-diisocyanatodicyclohexylmethane, l-isocyanato-l-methyl -4 (3) isocyanato-methylcyclohexane, bis
- the cycloaliphatic diisocyanate from the group consisting of 1,3- and 1,4-diisocyanatocyclohexane, 2,4- and 2,6-diisocyanato-l-methylcyclohexane, 1,3- and 1,4-bis (isocyanatomethyl) cyclohexane, l-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane, 4,4'-diisocyanato-dicyclohexyl methane, 2,4'-diisocyanate anatodicyclohexyl methane, 1-isocyanato - 1 -methyl-
- isocyanato-methylcyclohexane and bis (isocyanatomethyl) norbornane is selected and is preferably l-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane.
- the polyisocyanate composition according to the invention consists of> 70% by weight, preferably> 85% by weight, particularly preferably> 95% by weight and very particularly preferably 100% by weight of the mixture.
- the polyisocyanate composition according to the invention can be solvent-free, but one or more solvents which are inert to the reactive groups of the components used can also be present.
- Suitable solvents are, for example, the conventional paint solvents known per se, such as. B. ethyl acetate, butyl acetate, ethylene glycol monomethyl or ethyl ether acetate, l-methoxypropyl-2- acetate, 3-methoxy-n-butyl acetate, acetone, 2-butanone, 4-methyl-2-pentanone, cyclohexanone, toluene, xylene, chlorobenzene, white spirit, more highly substituted aromatics, as described, for example, under the names Solventnaphtha, Solvesso®, Isopar ®, Nappar®, Varsol® (ExxonMobil Chemical Central Europe, Cologne, DE) and Shellsol ® (Shell Kunststoff Oil GmbH, Hamburg, DE) are commercially available, but also solvents such as propylene glycol diacetate, diethylene glycol dimethyl ether, dipropylene glycol dimethyl ether, diethylene glycol
- the solids content of the polyisocyanate composition according to the invention can be varied within wide limits with the preferred use of organic solvents. It is very particularly preferred here if the polyisocyanate composition according to the invention has a solids content of> 10 and ⁇ 95% by weight, preferably of> 25 and ⁇ 85% by weight.
- a process for the preparation of a polyisocyanate composition according to the invention wherein the at least one polyisocyanate based on pentamethylene diisocyanate is mixed with the at least one polyisocyanate based on a cycloaliphatic diisocyanate and / or at least one polyisocyanate based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate and beforehand, simultaneously and / or afterwards one or more auxiliaries and additives can be added.
- a process for producing a polyisocyanate composition according to the invention is preferred, the at least one polyisocyanate based on pentamethylene diisocyanate being mixed with the at least one polyisocyanate based on a cycloaliphatic diisocyanate or at least one polyisocyanate based on pentamethylene diisocyanate and at least one cycloaliphatic diisocyanate and being mixed beforehand, simultaneously and / or afterwards one or more auxiliaries and additives can be added.
- a polyisocyanate composition according to any one of claims 1 to 5 or 6 as a crosslinking agent in a coating composition.
- the use of a polyisocyanate composition according to the invention as a crosslinking agent in a coating composition is a further subject of the invention.
- the use of pentamethylene diisocyanate in a polyisocyanate composition according to the invention to increase the chemical resistance of the coating obtained is a further subject of the invention.
- the polyisocyanate composition according to the invention is very well suited for producing a two-component system, so a two-component system containing a component A) comprising at least one polyisocyanate composition according to the invention and a component B) comprising at least one binder which is reactive toward isocyanate groups, the Component A) and / or component B) may contain at least one leveling aid and / or further auxiliaries and additives, a further subject of the invention.
- the two-component system according to the invention can be obtained, for example, by mixing the polyisocyanate composition according to the invention with the other compounds.
- the binder which is reactive toward isocyanate groups is a polyhydroxy compound, preferably a polyether polyol, polyester polyol, polycarbonate polyol or polyacrylate polyol.
- auxiliaries and additives which may be present can be, for example, cobinders, drying agents, fillers, cosolvents, colorants or effect pigments, thickeners, matting agents, calibration protection agents, tack additives, such as dispersants, thickeners, defoamers and other auxiliaries, known to the person skilled in the art act as adhesives, fungicides, bactericides, stabilizers or inhibitors and catalysts or emulsifiers.
- Another object of the invention is a method for producing a coating on a substrate, in which an inventive two-component system on the substrate applied and cured at a temperature> 25 ° C and ⁇ 150 ° C, preferably> 35 ° C and ⁇ 140 ° C, particularly preferably> 50 ° C and ⁇ 130 ° C.
- Suitable substrates are, for example, metal, glass, stone, ceramic materials, concrete, plastics, composites, textiles, leather or paper, which can optionally also be provided with conventional primers before coating.
- Particularly preferred substrates are substrates that have a surface made of metal and / or plastic.
- the polyisocyanate composition according to the invention can also be used with the blocking agents known from polyurethane chemistry, in the sense of one-component systems.
- coatings can be obtained which have improved chemical resistance, in particular with respect to sodium hydroxide solution or pancreatin, in comparison to coatings based on HDI or 2-methyl-l, 5-pentane diisocyanate.
- a coating, produced or producible by the method according to the invention, is therefore a further subject of the invention.
- a composite of the coating according to the invention and a substrate with a surface made of metal and / or plastic is a further subject of the invention.
- the NCO contents were determined titrimetrically in accordance with DIN EN ISO 11909: 2007 (binders for coating materials - isocyanate resins - general test methods).
- test sheets prepared in this way were provided with the appropriate test liquids in accordance with the gradient oven method and then subjected to a linear temperature gradient of 36 ° -68 ° C.
- the sheets thus stressed were then washed off with clear water and assessed after 1 and 24 hours in order to assess not only the direct damage but also the self-healing properties of the flare.
- the areas of a first recognizable attack of the clear lacquer were used for this assessment.
- the proportion of cyclo aliphatic polyisocyanate in the formulations is increased to a ratio of 1: 1, the formulations D, E and F show an almost similar level in terms of the tree resin resistance, but the comparative example formulation D (polyisocyanate 1 and 4) falls in the ratio 1: 1) in the caustic soda resistance, which is not desirable.
- a scratch-resistant coating is also desired, since scratches enormously impair the gloss of the surface (similar to the environmental influences).
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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)
- Polyurethanes Or Polyureas (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18208988.8A EP3660066A1 (de) | 2018-11-28 | 2018-11-28 | Polyisocyanatzusammensetzung auf basis von pentamethylendiisocyanat für beschichtungen |
| PCT/EP2019/082055 WO2020109125A1 (de) | 2018-11-28 | 2019-11-21 | Polyisocyanatzusammensetzung für beschichtungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3887423A1 true EP3887423A1 (de) | 2021-10-06 |
Family
ID=64556825
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18208988.8A Ceased EP3660066A1 (de) | 2018-11-28 | 2018-11-28 | Polyisocyanatzusammensetzung auf basis von pentamethylendiisocyanat für beschichtungen |
| EP19805971.9A Pending EP3887423A1 (de) | 2018-11-28 | 2019-11-21 | Polyisocyanatzusammensetzung für beschichtungen |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18208988.8A Ceased EP3660066A1 (de) | 2018-11-28 | 2018-11-28 | Polyisocyanatzusammensetzung auf basis von pentamethylendiisocyanat für beschichtungen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12122869B2 (de) |
| EP (2) | EP3660066A1 (de) |
| JP (1) | JP7707064B2 (de) |
| KR (1) | KR102859641B1 (de) |
| CN (1) | CN113166361A (de) |
| WO (1) | WO2020109125A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116640499B (zh) * | 2023-06-12 | 2023-11-17 | 东营海瑞宝新材料有限公司 | 一种聚脲防水组合物及其制备方法 |
| EP4480979A1 (de) * | 2023-06-20 | 2024-12-25 | Covestro Deutschland AG | Polyisocyanatzusammensetzung |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1493360B1 (de) | 1965-03-09 | 1970-01-15 | Upjohn Co | Verfahren zur Herstellung von an chlorhaltigen Verunreinigungen armen aliphatischen,cycloaliphatischen oder araliphatischen Polyisocyanaten |
| DE1900514B2 (de) | 1969-01-07 | 1976-08-26 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von aliphatischen diisocyanaten |
| DE3033860A1 (de) | 1980-09-09 | 1982-04-15 | Bayer Ag, 5090 Leverkusen | Neue isocyanato-isocyanurate, ein verfahren zu ihrer herstellung, sowie ihre verwendung als isocyanatkomponente in polyurethanlacken |
| DE3806276A1 (de) | 1988-02-27 | 1989-09-07 | Bayer Ag | Verfahren zur herstellung von isocyanuratgruppen aufweisenden polyisocyanaten und ihre verwendung |
| DE4426131A1 (de) | 1994-07-22 | 1996-01-25 | Bayer Ag | Lichtechte, lösemittelfreie Polyurethan-Beschichtungsmittel und ihre Verwendung |
| DE4441418A1 (de) | 1994-11-22 | 1996-05-23 | Bayer Ag | Verfahren zur Herstellung von 3,5-Dimethylpyrazol-blockierten Polyisocyanaten |
| EP0832159B1 (de) | 1995-06-07 | 2004-11-17 | The Sherwin-Williams Company | Für kraftwagen geeignete überzüge aus nicht-wässrigen dispersionen |
| DE19611849A1 (de) | 1996-03-26 | 1997-10-02 | Bayer Ag | Neue Isocyanattrimerisate und Isocyanattrimerisatmischungen, deren Herstellung und Verwendung |
| DE19752691A1 (de) | 1997-11-28 | 1999-06-02 | Huels Chemische Werke Ag | 2K-PUR-Beschichtungszusammensetzung |
| EP3103824B1 (de) * | 2014-02-06 | 2020-03-25 | Mitsui Chemicals, Inc. | Polymerisierbare zusammensetzung für optisches material und optisches material |
| US20180079852A1 (en) * | 2015-03-16 | 2018-03-22 | Covestro Deutschland Ag | Polyisocyanate composition based on 1,5-pentamethylene diisocyanate |
| EP3328914B1 (de) * | 2015-07-31 | 2022-03-09 | Covestro Intellectual Property GmbH & Co. KG | Blockierte polyisocyanatzusammensetzung auf basis von 1,5-pentamethylendiisocyanat |
| JP6793204B2 (ja) * | 2016-11-16 | 2020-12-02 | 三井化学株式会社 | ポリウレタンフォーム、衣料材料、ブラジャーのパッド、ブラジャーのカップ、および、ポリウレタンフォームの製造方法 |
| ES2907615T3 (es) * | 2017-02-08 | 2022-04-25 | Covestro Netherlands Bv | Composición de recubrimiento acuoso |
| ES2917404T3 (es) * | 2017-02-22 | 2022-07-08 | Covestro Intellectual Property Gmbh & Co Kg | Procedimiento para la modificación de al menos diisocianato de pentametileno usando sales de amonio espirocíclicas como catalizador |
| JP7398892B2 (ja) * | 2019-07-08 | 2023-12-15 | 三井化学株式会社 | 二液型ポリウレタンコーティング剤 |
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2019
- 2019-11-21 EP EP19805971.9A patent/EP3887423A1/de active Pending
- 2019-11-21 KR KR1020217015744A patent/KR102859641B1/ko active Active
- 2019-11-21 WO PCT/EP2019/082055 patent/WO2020109125A1/de not_active Ceased
- 2019-11-21 CN CN201980078639.2A patent/CN113166361A/zh active Pending
- 2019-11-21 JP JP2021526544A patent/JP7707064B2/ja active Active
- 2019-11-21 US US17/294,777 patent/US12122869B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP7707064B2 (ja) | 2025-07-14 |
| JP2022508126A (ja) | 2022-01-19 |
| WO2020109125A1 (de) | 2020-06-04 |
| CN113166361A (zh) | 2021-07-23 |
| US20220010053A1 (en) | 2022-01-13 |
| KR102859641B1 (ko) | 2025-09-16 |
| KR20210097115A (ko) | 2021-08-06 |
| US12122869B2 (en) | 2024-10-22 |
| EP3660066A1 (de) | 2020-06-03 |
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