WO2004029144A2 - Uv-stabilisierte partikel - Google Patents
Uv-stabilisierte partikel Download PDFInfo
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- WO2004029144A2 WO2004029144A2 PCT/EP2003/006600 EP0306600W WO2004029144A2 WO 2004029144 A2 WO2004029144 A2 WO 2004029144A2 EP 0306600 W EP0306600 W EP 0306600W WO 2004029144 A2 WO2004029144 A2 WO 2004029144A2
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- WIPO (PCT)
- Prior art keywords
- pigments
- particles
- polymer
- stabilized
- pigment
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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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/20—Halogens; Compounds thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/494—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
- A61K8/496—Triazoles or their condensed derivatives, e.g. benzotriazoles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
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- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
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- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0001—Post-treatment of organic pigments or dyes
- C09B67/0004—Coated particulate pigments or dyes
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0006—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black containing bismuth and vanadium
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
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- 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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
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- 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
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- C09D5/035—Coloring agents, e.g. pigments
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- 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
- C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K2800/43—Pigments; Dyes
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- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/52—Stabilizers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
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- C01P2004/32—Spheres
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/62—L* (lightness axis)
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- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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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
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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Definitions
- the present invention relates to UV-stabilized particles which are distinguished in that they reflect or absorb light of the wavelengths from 290 to 500 nm.
- Paints are usually provided with a UV filter, which is added to the paint as a powder or liquid.
- a UV filter which is added to the paint as a powder or liquid.
- protection is provided by adding these filters to the batch to be extruded. It is often recommended to use varnishes or
- Powder coatings also contain a tertiary amine, e.g. 2,2,6,6 tetramethylpiperidine.
- the UV protection of paints, powder coatings or plastics is often necessary because the pigments or particles they contain have inadequate UV stability.
- graying occurs when BiOCI pigments are irradiated with light, in particular UV light. Therefore, BiOCI pigments are usually offered in a solution or as a preparation with a UV absorber.
- solutions or preparations have the disadvantage that the UV absorber, based on the pigment, has to be used in relatively large concentrations, which leads to various disturbances in the application media.
- the object of the present invention is therefore to provide UV-stabilized particles which can be easily and without problems incorporated into the application media and at the same time can be produced in a simple manner.
- the light resistance of particles can be greatly increased if the surface of these particles is coated directly with a UV stabilizer.
- the UV absorber should reflect or absorb the light of wavelengths from 250 to 500 nm.
- the direct UV protection agent / particle surface contact also leads to a clear lower concentration of the UV protection agent compared to direct use in paints, powder coatings and plastics.
- the diffusion of the UV protective agent in the application medium is prevented, which is the cause of various faults in paints, powder coatings and plastics.
- the UV-resistant particles can be used in pure powder form in the application media and not as a solution or as a preparation.
- the invention thus relates to UV-stabilized particles which are distinguished by the fact that they reflect or absorb light of the wavelengths from 290 to 500 nm.
- the invention further relates to the production of the particles according to the invention and their use, inter alia. in paints, water-based paints, powder paints, paints, printing inks, security printing inks, plastics and in cosmetic formulations. Furthermore, the particles according to the invention are also suitable for the production of pigment preparations and for the production of dry preparations.
- the particles can be spherical, acicular or platy.
- the size of the particles is not critical per se and can be tailored to the particular application.
- the spherical particles have a diameter of 0.02-100 ⁇ m, particularly 0.03-20 ⁇ m and in particular 0.05-1 ⁇ m.
- the needle-shaped particles are 0.05-10 ⁇ m long, preferably they have lengths of 0.05-5 ⁇ m, in particular 0.05-1 ⁇ m.
- the particularly preferred substrates are platelet-shaped substrates.
- Suitable platelet-shaped substrates have a thickness between 0.02 and 5 ⁇ m, in particular between 0.1 and 4.5 ⁇ m.
- the expansion in the other two areas is usually between 1 and 500 ⁇ m, preferably between 2 and 200 ⁇ m, and in particular between 5 and 60 ⁇ m.
- Inorganic and organic pigments and mixtures thereof are suitable as particles.
- Suitable inorganic particles are, for example, uncoated or with one or more metal oxides coated SiO 2 spheres, fillers,
- Fluorescent pigments white pigments, such as e.g. Titanium dioxide, zinc white, colored zinc oxide, lead white, zinc sulfide, lithopone, black pigments such as Iron-manganese black, spinel black, iron oxide black, colored pigments, e.g. Chromium oxide, chromium oxide hydrate green, chrome green, cobalt green, ultramarine green, cobalt blue, ultramarine blue, iron blue,
- white pigments such as e.g. Titanium dioxide, zinc white, colored zinc oxide, lead white, zinc sulfide, lithopone
- black pigments such as Iron-manganese black, spinel black, iron oxide black
- colored pigments e.g. Chromium oxide, chromium oxide hydrate green, chrome green, cobalt green, ultramarine green, cobalt blue, ultramarine blue, iron blue,
- Manganese blue, ultramarine violet, cobalt and manganese violet iron oxide red, cadmium sulfoselenide, molybdate red, ultramarine red, iron oxide brown, mixed brown, spinel and corundum phases, chrome orange, iron oxide yellow, nickel titanium yellow, chromium titanium yellow, cadmium zinc sulfate, yellow gelatin yellow gelate, yellow gelatin yellow zincate, chrome yellow gelatin yellow zincate CrO 2 , Fe 2 O 3 , Fe 3 O, co-modified iron oxides, Ba ferrites and pure iron pigments, graphite platelets, effect pigments, holographic pigments and BiOCI.
- effect pigments are preferably commercially available metallic effect pigments such as ChromaFIair pigments by the firm Flex, coated or uncoated aluminum platelets, gold bronze pigments, for example by the firm Eckart, coated iron oxide platelets, such as Paliochrom ® -.
- Metallic effect pigments such as ChromaFIair pigments by the firm Flex, coated or uncoated aluminum platelets, gold bronze pigments, for example by the firm Eckart, coated iron oxide platelets, such as Paliochrom ® -.
- Particularly preferred inorganic pigments are BiOCI platelets, Ti0 2 particles, fluorescent pigments, holographic pigments, conductive and magnetic pigments, metal effect pigments, for example based on aluminum platelets, and effect pigments, such as, for example, pearlescent pigments, interference pigments, goniochromatic pigments, such as base layer, multi-layer pigments natural or synthetic mica, Al 2 O 3 , Ti0 2 , Si0 2 , Fe 2 0 3 , glass or graphite flakes.
- Preferred effect pigments are coated with Ti0 2 (rutile or anatase) substrates, such as. B.
- multi-layer pigments with two, three or more layers which contain one or more TiO 2 layers and spherical SiO 2 particles which can be coated with one or more metal oxides.
- Suitable organic pigments from the color index list are e.g. Monoazo pigments C.I. Pigments Brown 25, C.I. Pigment Orange 5, 13, 36, 67, C.I. Pigment Red 1, 2, 3, 5, 8, 9, 12, 17, 22, 23, 31, 48: 1, 48: 2, 48: 3, 48: 4, 49, 49: 1, 52: 1, 52: 2, 53, 53: 1, 53: 3, 57: 1, 251, 112, 146, 170, 184, 210, and 245, Cl Pigment Yellow 1, 3, 73, 65, 97, 151 and 183; Diazo pigments C.I. Pigment Orange 16, 34 and 44, C.I. Pigment Red 144, 166, 214 and 242, C.I. Pigment Yellow 12, 13, 14, 16, 17, 81, 106, 113,
- Pigments Violet 23 and 37 Flavanthrone pigments Cl Pigment Blue 60 and 64; Isoindoline pigments Cl Pigment Orange 69, Cl Pigment Red 260, Cl Pigment Yellow 139 and 185; Isoindolinone pigments Cl Pigment Orange 61, Cl Pigment Red 257 and 260, Cl Pigment Yellow 109, 110, 173 and 185; Isoviolanthrone pigments Cl Pigment Violet 31, metal complex pigments Cl Pigment Yellow 117 and 153, Cl Pigment Green 8; Perinone pigments Cl Pigment Orange 43, Cl Pigment Red 194; Perylene pigments Cl Pigment Black 31 and 32, Cl Pigment Red 123, 149, 178 17j9, 190 and 224, Cl Pigment Violet 29; Phthalocyanine pigments Cl Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6 and 16, Cl Pigment Green 7 and 36; Pyranthrone pigments Cl Pigment Orange
- Particularly preferred organic pigments are azo pigments, liquid crystal polymers and fluorescent pigments.
- Mixtures of different particles / pigments can also be stabilized by the process according to the invention.
- the UV resistance of the above-mentioned particles is significantly increased by applying UV protection agents or UV stabilizers to the particle surface.
- the UV protective agents / stabilizers are preferably fixed on the particle surface in that the protective agent is applied to the surface in combination with a polymer or polymer mixture.
- the proportion of UV protection agent / stabilizer on the particle surface depends on the particle to be protected.
- the particles preferably contain 0.001 to 1000% by weight, particularly preferably 0.01 to 500% by weight and in particular 0.1 to 100% by weight, based on the particles.
- the BiOCI platelets according to the invention contain 5 to 70% by weight, in particular 10 to 50% by weight, of UV stabilizer on the surface.
- Suitable UV stabilizers are known to the person skilled in the art and are commercially available, such as, for example, UV absorbers, UV reflectors, UV scattering agents, antioxidants, dyes, soot particles, free radical scavengers and microtitanium.
- Suitable UV absorbers are, for example, benzotriazoles, triazines,
- Suitable UV absorbers are also carbon black and UV scattering agents, such as cyanaralic acid derivatives.
- Radical scavengers can also be used as UV protection agents.
- Suitable radical scavengers are e.g. organic and inorganic nitro compounds, phenols, such as. B. hydroquinones, condensed aromatic compounds, hindered amines (HALS).
- Nanoparticles e.g. from titanium dioxide or iron oxide, titanium dioxide, barium sulfate. Nanoparticles are understood here to mean organic, inorganic, metallic particles with a size of ⁇ 300 nm, preferably ⁇ 150 nm.
- UV protection agents can also be used, the mixing ratio being unlimited. Mixtures consisting of radical scavengers and soot particles are particularly preferred.
- UV stabilizers are 2-hydroxybenzophenones, 2-hydroxyphenylbenztriazoles, 2-hydroxyphenyltriazines, oxalanilides, triazoles, triazines, titanium dioxide nanoparticles, iron oxide nanoparticles, carbon black, Hi ⁇ dered amines (HALS) and mixtures of the UV stabilizers mentioned.
- a UV protective agent can also be copolymerized in order to prevent absorption through the skin, which is particularly desirable in the case of cosmetic products.
- the particles according to the invention are easy to produce.
- the UV protective agent is fixed on the particle surface to be protected by an upstream or by a simultaneous precipitation of a suitable polymer or, if the protective agent itself is a polymer, by the sole precipitation thereof.
- a particularly preferred method is the fixing of the UV protection agents on the particle surface with LCST and / or UCST polymers.
- LCST polymers or UCST polymers are polymers which are soluble in a solvent at low or higher temperatures and when the temperature is increased or decreased and the so-called LCST or UCST (Iower or upper critical solution temperature) is reached be separated from the solution as a separate phase.
- Such polymers are e.g. in the literature in "Polymers", H.-G. Elias, Wegig and Wepf-Verlag, Switzerland, 1996 on pages 183 ff.
- Suitable LCST polymers for the present invention are, for example, those as described in WO 01/60926 A1.
- Particularly suitable LCST polymers are polyethylene oxide (PEO) derivatives, polyethylene oxide (PPO) derivatives, in particular acrylate-modified PEO-PPO-PEO three-block copolymers, polymethyl vinyl ether, poly-N-vinylcaprolactam, ethylhydroxyethyl cellulose, poly-N-isopropyl acrylamide and olefinic siloxane polymers.
- PEO polyethylene oxide
- PPO polyethylene oxide
- Suitable UCST polymers are in particular polystyrene, polystyrene copolymers and polyethylene oxide copolymers.
- the polymer content based on the end product is 0.1-80% by weight, preferably 1-30% by weight, in particular 1-20% by weight.
- UV protection agents or their mixtures are either applied directly to the surface to be protected and coated with LCST and / or UCST
- the UV protection agent is preferably immobilized
- Polymers or polymer mixture preferably an LCST and / or UCST polymer, optionally mixed in the presence of a solvent.
- the LCST polymer / protective agent mixture is dissolved at the temperature below the LCST, while the UCST polymer / protective agent solution is dissolved above the UCST.
- the LCST temperature is 0.5-90 ° C., preferably 35-80 ° C.
- the UCST temperature is 5-90 ° C., in particular 35-60 ° C.
- the temperature is then increased, usually by about 5 ° C. above the LCST or below the UCST, the polymer with the UV protection agent precipitating and settling on the particle surface.
- the immobilization takes place in the form of a crosslinking of the polymer on the particle surface, the polymer being irreversibly fixed on the particle surface.
- the immobilization can take place radically, cationically, anionically or through a condensation reaction.
- the LCST or UCST polymers are preferably crosslinked by free radicals or by a condensation reaction.
- potassium peroxodisulfate for a radical crosslinking (immobilization) of the deposited layer in water, potassium peroxodisulfate or is preferably used
- the crosslinking takes place depending on the LCST or UCST temperature of the polymer at 0 - 35 ° C using a catalyst, such as. B. a Fe (ll) salt, or at 40 - 100 ° C by direct thermal decomposition of the radical initiator.
- the particles are preferably mixed into the solution of the LCST or UCST polymer as a dispersion, the same solvent as that of the polymer solution preferably being used and the temperature of the dispersion being lowered below the LCST or UCST. However, the particles can also be directly dispersed in the LCST or UCST solution.
- the choice of solvent depends on the solubility of the polymer used.
- the solvent is preferably water or a water-miscible organic solvent.
- the water-miscible solvents also include those solvents which have gaps in the mixture with water. In these cases, the proportions are chosen so that there is miscibility.
- suitable solvents are mono- and polyalcohols, e.g.
- Methyl acetate monoesters of ethylene glycol or propylene glycols with acetic acid, butyrolactone; Ketones such as acetone or methyl ethyl ketone; Amides such as formamide, dimethylformamide, dimethylacetamide, N-methylpyrrolidone and hexamethylphosphoric acid triamide; Sulfoxides and sulfones such as e.g. Dimethyl sulfoxide and sulfolane, alkane carboxylic acid such as formic acid or acetic acid,
- Suitable solvents are in particular water, furthermore organic solvents, such as e.g. Alcohols and glycols.
- the LCST and / or UCST polymer coatings are particularly preferably carried out as a complete coating of the particles.
- the aftertreatment according to the invention further increases the chemical stability of the particles and at the same time the handling of the particles, in particular the incorporation into different application media, relieved.
- the particles according to the invention have increased stability against flocculation in water-based paints or against the formation of structures in the case of organic paint systems.
- the UV-stabilized particles also show very good weather resistance, very good dispersing behavior and, because of their stability, are very well suited for a wide variety of application systems, in particular for aqueous and organic paints.
- the UV-stabilized particles are compatible with a large number of color systems, preferably in the field of paints, water-based paints, powder coatings, paints, printing inks, security printing inks, plastics and cosmetic formulations. Furthermore, the particles according to the invention are also for the laser marking of papers and plastics, as light protection, for coloring concrete and for
- Agricultural applications e.g. for greenhouse films, e.g. suitable for the coloring of tarpaulins.
- the particles according to the invention are also advantageously mixed with organic dyes, organic pigments or other pigments, such as, for example, transparent and opaque white, colored and black pigments, and with platelet-shaped iron oxides, organic pigments, for the various purposes of use.
- organic dyes organic pigments or other pigments
- holographic pigments LCPs (liquid crystal polymers), and conventional transparent, colored and black gloss pigments based on metal oxide coated mica, glass, Al 2 0 3 , graphite and Si0 2 platelets, etc.
- the particles stabilized according to the invention can be mixed in any ratio with commercially available pigments and fillers.
- the particles according to the invention are also suitable for the production of flowable pigment preparations and dry preparations, such as, for example, granules, briquettes, sausages, pellets, etc.
- the pigment preparation and dry preparations are distinguished by the fact that they contain at least one or more particles, binders and, optionally, one or more Contain additives.
- the invention also relates to the use of the UV-stabilized particles in paints, water-based paints, powder paints, paints, printing inks, security printing inks, plastics, concrete, also in cosmetic formulations, for laser marking of papers and plastics, as pigments in corrosion protection, in agricultural films and tarpaulins as well as for the production of pigment preparations and dry preparations.
- the invention thus also relates to formulations which contain the pigment preparation according to the invention.
- Example 1a UV stabilization of BiQCI pigments 0.25 g of benzotriazole dehvate (UV absorber from Ciba-Geigy) are mixed with 1.0 g of modified LCST polymer (three-block copolymer based on polypropylene oxide, polyethylene oxide) and mixed in 20 ml of distilled water dissolved at 23 ° C. Then (up to 30 microns in the dispersion. Product from platy BiOCl pigment of particle size 10th Merck KGaA, Germany) 20 g of bi-flair ® 83S paste stirred in a dissolver at 200 rev / min. After stirring for 5 minutes at 23 ° C., the mixture is heated to 40 ° C.
- UV absorber from Ciba-Geigy UV absorber from Ciba-Geigy
- Example 1 b Production of a pigmented water-based paint
- a water-based paint pigmented with the UV-stabilized BiOCI pigments from Example 1a and with untreated BiOCI pigments is prepared by adding 5 g of pigment paste (corresponds to 2.5 g of pigment) in 15 g of a water-based paint acrylic / melamine based. The water-based paint is put together
- the dry layer thickness of the opaque lacquer layers that are applied to the glass slides is 100 ⁇ m after a 0.5-hour baking process in a convection oven at 125 ° C.
- the UV exposure is carried out in the Xenotest for 24 or 45 hours.
- the damage to the pigment is determined colorimetrically by measuring the change in the brightness value L *.
- the color measurements are carried out using the 45 ° measuring geometry and a Datacolor device. The results of the color measurements are summarized in Table 1.
- Example 2a UV stabilization of BiOCI pigments with carbon black 0.1 g of carbon black (Spezialschwarz 350, from Degussa-Hüls AG) are mixed with 2.0 g of modified LCST polymer (polypropylene oxide diacrylate). The mixture is then dispersed on the Scandex for 0.5 h and 40 ml of dist. Water added. The pigment preparation obtained is briefly shaken, 20 ml are removed and the mixture is cooled to 0.5 ° C. and stirred in a dissolver until a homogeneous mixture has formed. Then 20 g of Bi-Flair ® 83S paste are stirred into the mixture. After stirring for 15 minutes at 0.5 ° C, the mixture is warmed to 23 ° C.
- Spezialschwarz 350 from Degussa-Hüls AG
- Example 2b Preparation of a pigmented water-based paint
- pigmented water-based paints are produced by stirring 5 g of pigment paste (corresponds to 2.5 g of pigment) into 15 g of an acrylic / melamine-based water-based paint.
- Example 2c Color measurements
- the BiOCl pigments stabilized with carbon black show a significantly higher UV resistance compared to the non-stabilized BiOCI pigments.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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AU2003293294A AU2003293294A1 (en) | 2002-06-24 | 2003-06-23 | Uv-stabilised particles |
JP2004538797A JP2005532467A (ja) | 2002-06-24 | 2003-06-23 | Uv安定化粒子 |
EP03788888A EP1517951A2 (de) | 2002-06-24 | 2003-06-23 | Uv-stabilisierte partikel |
US10/518,464 US7579079B2 (en) | 2002-06-24 | 2003-06-23 | UV-stabilised particles |
Applications Claiming Priority (2)
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DE10228186A DE10228186A1 (de) | 2002-06-24 | 2002-06-24 | UV-stabilisierte Partikel |
DE10228186.6 | 2002-06-24 |
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WO2004029144A2 true WO2004029144A2 (de) | 2004-04-08 |
WO2004029144A3 WO2004029144A3 (de) | 2004-05-06 |
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US (1) | US7579079B2 (de) |
EP (1) | EP1517951A2 (de) |
JP (1) | JP2005532467A (de) |
CN (1) | CN100475895C (de) |
AU (1) | AU2003293294A1 (de) |
DE (1) | DE10228186A1 (de) |
WO (1) | WO2004029144A2 (de) |
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- 2003-06-23 CN CNB038148897A patent/CN100475895C/zh not_active Expired - Fee Related
- 2003-06-23 US US10/518,464 patent/US7579079B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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DE10228186A1 (de) | 2004-01-22 |
AU2003293294A1 (en) | 2004-04-19 |
JP2005532467A (ja) | 2005-10-27 |
WO2004029144A3 (de) | 2004-05-06 |
AU2003293294A8 (en) | 2004-04-19 |
CN1662594A (zh) | 2005-08-31 |
EP1517951A2 (de) | 2005-03-30 |
CN100475895C (zh) | 2009-04-08 |
US7579079B2 (en) | 2009-08-25 |
US20060155007A1 (en) | 2006-07-13 |
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