Classifications

• • 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
  • C08K9/04—Ingredients treated with organic substances
• • 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
  • 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
  • C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
• • 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
  • 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
  • C09C1/0051—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating low and high refractive indices, wherein the first coating layer on the core surface has the low refractive index
• • 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
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
• • 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
  • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
  • C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
  • C09C3/045—Agglomeration, granulation, pelleting
• • 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
  • C01P2004/24—Nanoplates, i.e. plate-like particles with a thickness from 1-100 nanometer
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
  • C01P2004/00—Particle morphology
  • C01P2004/60—Particles characterised by their size
  • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer

Definitions

• Application media in particular paints, plasters, lacquers, powder coatings, plastics and as scattering granules, eg for decorating wallpapers .
• platelet-shaped effect pigments are not always sufficiently possible.
• different application media such as e.g. Powder coatings, water-based paints or wall dispersion paints,
• the stroke guidance when applying wall paints with a brush or roller disturbs a homogeneous plane-parallel orientation of the particles parallel to the wall surface.
• the pearl effect can only partially align.
• a plane-parallel alignment of the pigments is not always desired, for example, if the visual impression of a coating over different viewing angles should not change.
• Paints and paints also contain pigment granules
• Pigment granules based on a carrier material such as e.g.
• the present invention therefore relates to pigment granules which are based on at least one support material which is coated with at least one platelet-shaped effect pigment by means of at least one adhesion promoter, the support material having a particle size D50 of 3 to 1000 ⁇ m and the proportion of platelet-shaped effect pigment in the pigment granules 40. 90% by weight.
• Coated here is to be understood as the superficial coating of the at least one carrier material with the at least one effect pigment.
• the effect pigment is fixed on the surface of the carrier material by physical forces and / or the adhesion promoter. It is also possible for a proportion of effect pigment to be present in bulk and in a form not fixed on the surface.
• the pigment granules of the invention are particularly suitable for use as scattering granules in effect wallpaper, for
• Pigment granules according to the invention show a strong glitter behavior. From different viewing angles, they show no "on-off effect” but by disorienting the platelet-shaped effect pigments An angle-independent glitter is generated. An "on-off effect” is referred to as pigment particles when the change in the
• Viewing angle changes the reflectivity of these particles.
• the pigment granules of the invention are not dusty and very free-flowing, which reduces the expenditure on equipment in their processing.
• they are characterized by the fact that they are abrasion-resistant, dimensionally stable and have a uniform color effect. They show a negligible segregation in the formulation and after the application. As a result, leafing occurs only negligibly. Also, they are easy to process with uniform dispersion.
• pigment granules contain at least one platelet-shaped effect pigment which is selected from the group of pearlescent pigments, interference pigments, metallic effect pigments,
• Pigments coated or uncoated BiOCl platelets and / or LCP pigments.
• Useful pearlescent pigments, interference pigments, metallic effect pigments or multilayered pigments with transparent, semitransparent and / or opaque layers are based in particular on substrates, which are preferably platelet-shaped.
• substrates which are preferably platelet-shaped.
• substrates which are preferably platelet-shaped.
• Ruorophlogopite or natural mica, doped or undoped
• the metal platelets may consist, inter alia, of aluminum, titanium, bronze, steel or silver, preferably aluminum and / or titanium.
• the metal platelets can be passivated by appropriate treatment.
• the glass flakes may consist of all types of glass known to the person skilled in the art, for example A glass, E glass, C glass, ECR glass, waste glass, window glass, borosilicate glass, Duran® glass, laboratory glassware or optical glass.
• the refractive index of the glass flakes is preferably 1.45-1.80, in particular 1.50-1.70.
• the glass substrates consist of C glass, ECR Glass or borosilicate glass.
• Platelet-shaped effect pigments with substrates of synthetic (eg fluorophlogopite) or natural mica, doped or undoped glass platelets and platelet-shaped SiO 2 are preferably used in the pigment granules according to the invention. Particularly preferred are effect pigments with substrates of synthetic (eg fluorophlogopite) or natural mica.
• the substrate of the effect pigment may preferably be coated with one or more transparent semitransparent and / or opaque layers comprising metal oxides, metal oxide hydrates, metal suboxides, metals, metal fluorides, metal nitrides, metal oxynitrides or mixtures of these materials.
• the metal oxide, metal oxide hydrate, metal suboxide, metal, metal fluoride, metal nitride, metal oxynitride layers or the mixtures thereof may be low (refractive index ⁇ 1.8) or high refractive index (refractive index> 1.8, preferably> 2.0)
• Suitable metal oxides and metal oxide hydrates are all metal oxides or metal oxide hydrates known to the person skilled in the art, such as, for example, Alumina, alumina hydrate, silica,
• Silica hydrate iron oxide, tin oxide, ceria, zinc oxide, zirconia, chromia, titania, especially titania, titania hydrate, and mixtures thereof, e.g. Ilmenite or pseudobrookite.
• Metal suboxides can be used, for example, the titanium suboxides.
• Suitable metals are e.g. Chromium, aluminum, nickel, silver, gold, titanium, copper or alloys, for example, magnesium fluoride is suitable as the metal fluoride.
• metal nitrides or metal oxynitrides for example, the nitrides or oxynitrides of the metals titanium,
• Metal oxide, metal, metal fluoride and / or Metallloxidhydrat Anlagenen and most preferably metal oxide and / or Metallloxidhydrattiken applied to the substrate. You can also continue
• Multilayer constructions of high and low refractive index metal oxide, metal oxide hydrate, metal or metal fluoride layers are present, preferably alternating high and low refractive index layers.
• layer packages of a high-refractive and a low-refractive-index layer it being possible for one or more of these layer packages to be applied to the substrate.
• the order of the high and low refractive layers can be adapted to the substrate to include the substrate in the multilayer construction.
• the metal oxide, metal oxide hydrate, metal suboxide, metal, metal fluoride, metal nitride, metal oxynitride layers may be mixed with colorants or doped. As a colorant or other
• Color pigments such as colored metal oxides, e.g. Magnetite, chromium oxide or color pigments, e.g. Berlin blue, ultramarine, bismuth vanadate, thenard blue, or organic color pigments such as e.g. Indigo, azo pigments, phthalocyanines or carmine red or elements such. Yttrium or antimony. Effect pigments containing these layers exhibit a high color diversity with respect to their body color and in many cases can show an angle-dependent change of the color (color flop) due to interference.
• color pigments such as colored metal oxides, e.g. Magnetite, chromium oxide or color pigments, e.g. Berlin blue, ultramarine, bismuth vanadate, thenard blue, or organic color pigments such as e.g. Indigo, azo pigments, phthalocyanines or carmine red or elements such. Yttrium or antimony. Effect pigments containing these layers exhibit a high color diversity with respect to their body color and in many
• the outer layer on the substrate is preferably a high refractive index metal oxide.
• This outer layer can additionally be used on the above-mentioned layer packages or in the case of high-index carriers
• Ti0 2 titanium suboxides, Fe 2 O 3 , Fe 3 0 4 , Sn0 2 , ZnO, Zr0 2) Ce 2 0 3 , CoO, Co 3 0 4 , V 2 0 5 , Cr 2 0 3 and or mixtures thereof, such as ilmenite or pseudobrookite.
• TiO 2 is particularly preferred, further Fe 2 0 3 , and mixtures of TiO 2 and Fe 2 0 3rd If the substrate flakes are coated with TiO 2 , the TiO 2 is preferably present in the rutile modification, further in the anatase modification.
• an SiO 2 layer may be applied to the substrate wafer
• Substrate plate is a glass plate, it is often recommended to apply a SiO 2 layer around the glass plate in the
• high refractive index a refractive index of> 1, 8, preferably> 2.0
• low refractive index a refractive index of ⁇ 1, 8 are understood.
• the thickness of the metal oxide, metal oxide hydrate, metal suboxide, metal, metal fluoride, metal nitride, metal oxynitride layers or a mixture thereof is usually 3 to 300 nm and in the case of metal oxide, metal oxide hydrate, metal suboxide, metal fluoride, metal nitride .
• Metal oxynitride layers or a mixture thereof preferably 20 to 200 nm.
• the thickness of the metal layers is preferably 4 to 50 nm.
• Metal fluoride layers coated platelet-shaped substrates generally have a thickness between 0.05 and 5 pm, in particular between 0.1 and 4.5 pm.
• the extension in length or width is usually between 1 and 250 ⁇ m, preferably between 2 and 200 ⁇ m and in particular between 2 and 100 ⁇ m.
• mice flakes + TiO 2 / Fe 2 0 3
• Metal platelets (optionally passivated) + Fe 2 0 3 .
• particular preference is given to effect pigments having the abovementioned layer structures and based on mica flakes, glass flakes and SiO 2 flakes, in particular based on mica flakes.
• TiO 2 / Fe 2 O 3 means that TiO 2 and Fe 2 O 3 are present in one layer as a mixture and / or as a mixed oxide in the form of the pseudobrookite.
• Pseudobrookite or the TiO 2 / Fe 2 O 3 mixed layer may optionally also be doped with Al 2 O 3 .
• Suitable effect pigments are commercially available, for example from BASF Corp.
• Fire Mist ®, TM Rightfit, Magna Pearl ® from Merck KGaA under the trade name Iriodin ®, Miraval ®, Xirallic ® and ColorStream ®
• Pigment granules can be between 40-90 wt .-%, in particular> 50-90 % By weight.
• the weight fraction is preferably between> 50-75% by weight.
• Pigment granules 60-80 wt .-% and particularly preferably 60-75 wt .-% of the platelet-like effect pigments based on the pigment granules.
• the optimum proportions within these ranges are easy to determine for a person skilled in the art and depend essentially on the particle size of the effect pigments used, the form factor of the effect pigments and the type of pigment buildup.
• the pigment granules also contain at least one in addition to the platelet-shaped effect pigments
• a suitable carrier material should in particular have a high transparency.
• the carrier materials may be present as individual particles, which are preferably spherical.
• polymer solid spheres in particular polymer solid spheres, hollow polymer spheres, glass solid spheres and / or glass hollow spheres are used. Preference is given here
• Full glass beads and particularly preferred hollow glass beads are provided.
• transparent supports such as e.g. Full glass beads and glass hollow spheres, with their light transmission the optical properties, e.g. the pearlescent or metallic luster, the effect pigments applied to the surface.
• mixtures of the carrier materials in particular full glass beads and hollow glass beads.
• all possible mixing ratios can be used, preferably the carrier materials are mixed in such a way that physical and chemical properties, such as adhesion in the
• the support material may have particle sizes of 3,000 ⁇ , preferably 5-1,000 ⁇ .
• the support material particle sizes of 3-299 m, most preferably from 4 to 250 pm, in particular from 5 to 200 ⁇ .
• Particularly preferred are particle sizes of 15-150 ⁇ , in particular 15-100 ⁇ .
• the specified particle size means the average particle size D50. It can be determined by sieve analysis according to DIN 66165 Part 2, Edition 1987-04, or, in particular for small particle sizes, by means of laser diffraction as described in ISO 13320, Edition 2009/10.
• Such glass beads are commercially available, e.g. from the company Sovitec GmbH.
• the particle sizes are determined in accordance with DIN 66165 Part 2.
• Other glass hollow spheres are, for example, in the company "3M
• the glass beads should be chemically resistant depending on the application. Preference is given to using full glass beads or soda-lime beads made of soda-lime glass with the main constituents SiO 2 / CaO / Na 2 O, ECR glass, C glass, borosilicate glass or quartz glass.
• Hollow glass spheres of "3M Deutschland GmbH” may have the following characteristic values:
• Oil absorption 0.2-0.6 g oil / cm 3 (determined according to ASTM 0281-95).
• Grain size '9-120 ⁇ (determined according to DIN 66165-2)
• glass hollow spheres or glass full spheres made of soda-lime glass with the main constituents SiO 2 / CaO / Na 2 O, ECRGias, C glass,
• Borosilicate glass or quartz glass can be used with a
• organic pigments as described in “Industrial Organic Pigments” by the authors Hunger / Herbst, published by VCH-Verlag 1995, at pages 633-640, can be used. " Furthermore, organic and inorganic pigments, as in the
• Grain size 15-65 pm (determined according to DIN 66165-2)
• the glass spheres from Quadra Industries are coated with organic and / or inorganic pigments.
• the proportion of carrier material based on the pigment granules may be 10 - 5 60 wt .-%, in particular 10 - ⁇ 50 wt .-% amount.
• the proportion of carrier material is preferably 25- ⁇ 50% by weight, particularly preferably 20-40% by weight and very particularly preferably 25-40% by weight.
• the pigment granules also contain at least one adhesion promoter, preferably selected from the group of ethylene-acrylic acid emulsions (EAA), acrylate dispersions, polyurethane dispersions and acrylate / polyurethane copolymer dispersions.
• EAA ethylene-acrylic acid emulsions
• acrylate dispersions acrylate dispersions
• polyurethane dispersions acrylate / polyurethane copolymer dispersions
• adhesion promoters are preferably those which dry physically. Particularly preferred as adhesion promoter aqueous
• Emulsions are used, preferably EAA emulsions (ethylene acrylic acid copolymers), commercially available for example from the Fa.
• EAA emulsions ethylene acrylic acid copolymers
• Emulsions and dispersions based on acrylated polypropylenes or low chlorinated polypropylenes are particularly preferred.
• Dispersions are commercially available, for example from the Fa.
• Tramaco under the designation “Trapylen 9310 W” and “Trapylen 6700 W”.
• the size of the EAA emulsion particles is preferably 20-300 nm.
• the preferred EAA emulsions are preferably 65-85 parts water and 15-35 parts EAA.
• Polypropylene emulsion particles or dispersion particles is preferably 50-5000 nm.
• Suitable adhesion promoters are also wax emulsions, commercially available, for example, from the company KEIM ADDITEC Surface GmbH .
• Suitable wax emulsions are e.g. LD-PE low density polyethylene (LD-PE) emulsions, e.g. Ultralube V-06070480 of the company KEIM
• the wax emulsions preferably contain emulsion particles of size 20-100 nm.
• the suitable wax emulsions preferably have a melting range of 50-60 ° C, especially 90-140 ° C and most preferably 90-130 ° C on.
• adhesion promoters which are based on aqueous dispersions, such as those ) based on copolymers or based on terpolymers:
• Vinyl chloride (VC) / ethylene [E] / vinyl laurate (VL) VC / EA / L
• VAC Vinyl acetate
• E ethylene
• VC vinyl chloride
• PVB polyvinyl butyral dispersions
• PE Polyether
• PU Polyurethane
• PC Polycarbonate
• PU Polyurethane
• PES Polycarbonate
• PC Polycarbonate
• PU Polyurethane
• Adhesives based on resins and polymers which are dilutable with organic solvents or soluble in them are also suitable as adhesion promoters. Usually, these adhesion promoters are not water-soluble or water-dilutable. Examples of suitable raw materials can be found e.g. in Lackrohstofftabellen, Vincentz-Verlag, 10th edition, edition 2000, pages 62-622.
• adhesion promoters examples include the following resins and polymers:
• the adhesives that can be used as adhesion promoters are subdivided according to the hardening mechanism in:
• Polymerization adhesives e.g.
• polycondensation adhesives e.g.
• hot melt adhesives e.g.
• Moisture-reactive amorphous poly alpha olefin hot melt adhesive K-APAO.
• the proportion of adhesion promoter in the pigment granules can be 1-10% by weight.
• the proportion is 1-9 wt .-%, more preferably 1-8 wt .-%, most preferably 1-7 wt .-% based on the total mass of the respective pigment granules.
• Pigment granules may additionally contain at least one additive, as are customary for use in application media from the fields of paints, lacquers, powder coatings, plastics.
• additives and / or Adjuvants may include lubricants, release agents, stabilizers, antistatics, flame retardants, antioxidants, colorants, flexibilizers,
• Plasticizers e.g. Diisononyl phthalate, blowing agents, antioxidants, UV absorbers, inorganic fillers and / or surfactants, organic
• the pigment granules contain wetting agents, e.g. Silicones, silanes and / or fluorosurfactants.
• wetting agents e.g. Silicones, silanes and / or fluorosurfactants.
• the proportion of additive in the pigment granules may be 0-5% by weight, preferably 0.1-5% by weight.
• the proportion is preferably 0.2-5 wt .-%, more preferably 0.2-4.5 wt .-%, most preferably 0.3-4 wt .-% based on the total mass of the pigment granules.
• granules in this application are all solid particle shapes conceivable in the art, such as e.g. Pellets, briquettes, pearlets, sausages or the tableted form to understand.
• the particle sizes of the granules are preferably in the range of 0.025 to 150 mm, in particular 0.1 to 20 mm, and most preferably in the range of 0 , 05 to 6 mm.
• pigment granules can support material, adhesion promoter and
• Weight ratio of 0.20: 0.1: 0.70 Weight ratio of 0.20: 0.1: 0.70.
• pigment granules may preferably contain
• the total amount of all components in the pigment granules is 100 wt .-%.
• the pigment granules preferably contain> 50-75% by weight of one or more effect pigments, 25- ⁇ 50% by weight of at least one
• Carrier material having a particle size of 3 - 000 pm, preferably 5 - 1000 pm, 1 - 7 wt .-% adhesion promoter and optionally 0.3 - 4 wt .-% additives.
• Particularly preferred pigment granules contain> 50-75 wt .-% of one or more effect pigments, 25 - ⁇ 50 wt .-% of at least one
• Support material having a particle size of 4 - 250 pm, 1 - 7 wt .-% adhesion promoter and optionally 0.3 - 4 wt .-% additives.
• these pigment preparations preferably contain glass spheres, preferably hollow glass spheres, as support material.
• pigment granules can be used with a particle size of
• pigment granules which contain> 50-75% by weight of one or more effect pigments, 25- ⁇ 50% by weight of at least one
• Carrier material having a particle size of 15 - 150 pm, 1-7 wt .-% adhesion promoter and optionally 0.3 to 4 wt .-% additives.
• Glass spheres preferably glass hollow spheres, as support material.
• the desired properties of the pigment granules according to the invention such as reduced
• the carrier particles are advantageously at least partially or completely coated or enveloped with the effect pigment and
• Pigment granules may also contain at least one filler, at least one dye and / or at least one color pigment, in particular those which are customary in the field of plastics and / or paints. Based on the pigment granules, the total proportion of all components being 100% by weight, the proportion of dye, color pigment and / or filler may be 0-10% by weight, preferably 0.1-5.
• fillers are e.g. the known, natural and synthetic materials such as carbonates, v.a. Calcium carbonates, barium sulphates, silicates, talc, mica, kaolin, feldspar, aluminum silicate, silica, aluminum hydroxide and other inorganic and organic fillers.
• Such fillers are in the "Pigment + Grestofftabellen” by the author Lückert, published by Vincentz-Verlag 2002, 6th edition, pages 596-768 and Detlef Gysau, "fillers", Vincentz Verlag 2005
• Another object of the present invention is a process for the preparation of the pigment granules according to the invention, wherein at least one platelet-like effect pigment, and at least one support material with at least one adhesion promoter and optionally at least one additive are mixed simultaneously or successively.
• Pigment granules are relatively easy to produce. As a possible manufacturing process are the gentle mixture of the individual
• the adhesion promoter and optionally additives and the effect pigment or the mixture of effect pigments and optionally further organic and / or inorganic pigments mixed are rounded to the intended particle size on a horizontally rotating pelletizing plate.
• the gentle drying of the raw granules in a fluidized bed eg . in a fluidized bed or fluidized bed dryer.
• Support material is variable and can also be carried out, for example, in such a way that the effect pigment is initially introduced and subsequently mixed with the adhesion promoter, the support material and, if appropriate, additives. This embodiment is particularly preferred .
• the effect pigments, the support material and the adhesion promoter and optionally additives are mixed with one another.
• the carrier material is at least partially or completely coated or encased with the effect pigment by the adhesion promoter. A complete wrapping and "gluing" of the
• Support material with the platelet-shaped effect pigment is very particularly preferred.
• the present invention also provides for the use of the pigment granules according to the invention, individually or in mixtures, in application media such as printing inks, automotive OEM paints,
• Automotive refinish systems industrial coating systems, coil coating coatings, powder coatings, wood coatings, plastic coatings, emulsion paints,
• the pigment granules according to the invention can advantageously be used, individually or in mixtures, for the production of coatings which show a strong glitter. At the same time, such coatings can have a matt and / or velvety appearance.
• Pigment granules according to the invention cause a strong angle-independent glitter behavior of the coatings. From different viewing angles, these show no "on-off effect” but by disorienting the platelet-shaped effect pigments, an angle-independent glittering is produced.
• the term "on-off effect” is used for pigment particles when the reflectivity of these particles changes as the viewing angle changes .
• the disorientation of the platelet-shaped effect pigments and thus the angle-independent glittering effect is characterized according to the invention colorimetrically over the Alman flop index (DH Alman, Proc. Of the ISCC Williamsburg Conf. On Appearance 53 (987).) Large values of the Alman index mean a large color flop from shining angles to shallow angles so showing good orientation and small values
• the Alman index is calculated according to the following formula:
• L * corresponds to the measured luminance or brightness among the
• the preparation of coatings with an Alman index of ⁇ 5 is preferably possible with the pigment granules according to the invention.
• the preferred pigment granules mentioned above in particular those which are 40 - 90% by weight, preferably> 50-75% by weight of one or more
• Effect pigments 0-60% by weight, preferably 25- ⁇ 50% by weight of at least one support material having a particle size of 15-150 ⁇ m, 1-7% by weight of adhesion promoter and optionally 0.3-4% by weight Contain additives.
• Glass spheres preferably glass hollow spheres, as support material.
• the pigment granules according to the invention are in particular as
• PU polyurethane
• Another object of the invention are dyes, in particular dispersion-based wall paints for inside and outside, with at least one pigment granules as described above.
• the wall paints consist essentially of water, binders, pigments, fillers and additives.
• Binders are silicate systems based on water glass or aqueous polymer dispersions consisting of
• Silicone resins polyurethanes.
• the formulations may vary depending on
• the pigment granules can be carried out in combination with the customary pigments and fillers; in this case, the pigment granules can be dispersed at the end of the manufacturing process.
• Emulsion paints can be found in R. Baumstark, "Dispersions for
• the formulations can be modified in such a way that in particular the content of titanium dioxide and optionally also the content of fillers can be reduced or even completely dispensed with.
• the titanium dioxide pigment and / or filler content can be up to 10 to 100% compared to conventional formulations.
• Substrate can be provided with a suitable base coat, which adjusts the adhesion and the water absorption capacity.
• the background color can be provided with pigments for coloristic reasons.
• Example 1 Disoriented pigment granules
• the pigment granules according to the invention For the preparation of the pigment granules according to the invention, a homogeneous mixing is to be ensured.
• the mixture is made using an Eirich R02 VAC EX mixer.
• the coarse fraction of the pigment granules thus prepared is first separated through a sieve of mesh size 400 pm. By subsequent classification via a sieve of mesh size 60 ym, the target fraction is separated.
• the granules thus obtained are resistant to abrasion and dimensionally stable and has an exceptional purity of the pearl effect produced.
• Example 2 Disoriented pigment granules
• the pigment granules according to the invention For the preparation of the pigment granules according to the invention, a homogeneous mixing is to be ensured.
• the mixture is made using an Eirich R02 VAC EX mixer.
• the coarse fraction of the pigment granules thus prepared is first separated via a sieve of mesh size 400 ⁇ . By subsequent classification via a sieve of mesh size 60 pm, the target fraction is separated.
• the granules thus obtained are resistant to abrasion and dimensionally stable and has an exceptional purity of the pearl effect produced .
• Example 3 Disoriented pigment granules
• the pigment granules according to the invention For the preparation of the pigment granules according to the invention, a homogeneous mixing is to be ensured.
• the mixture is made using an Eirich R02 VAC EX mixer.
• Example 4 Dispersion paints with coloristic effect and structured
• Caparol Deco glaze 500 g of Caparol Deco glaze are provided by Caparol in a 1 l glass beaker, and then while stirring with an IKA laboratory stirrer RW 16 basic, at 400 rpm within 1 min. with 75 g of distilled water
• the base is mixed with 2% “Caparol tinting yellow” (series AVA full tone and tinting color for outside and inside) with stirring.
• the priming coat When painting, the priming coat is evenly applied to the substrate using a microfiber roller. After 1 hour of drying at 25 ° C, the second coat follows. The second coat with the
• Reference colors 1A and B, as well as the colors 2 and 3 according to the invention by means of a brush.
• the brush stroke is only performed in one direction from top to bottom.
• Inventive colors except the reference color 1A a single color application is performed.
• reference color 1A the reference color is applied twice.
• the underground for the paints is a repair non-woven wallpaper from the company "Dresden Paper” and a "tempera-Duplextapetenvlies", each uncoated.
• the grammage is 130 g / m 2 .
• the wallpaper patterns are characterized colorimetrically with respect to the Alman flop index (DH Alman, Proc. Of the ISCC Williamsburg Conf. On Appearance 53 (1987).)
• the Alman alman index flop index serves as a measure of disorientation, with large Values mean a large color flop of gloss angles at shallow angles meaning good orientation
• the Alman index is calculated according to the following formula:
• L * corresponds to the measured luminance or brightness under the various angles, with distances from the glancing angle of 15 °, 1 0 ° and 45 °, respectively.
• the spectrophotometer “BYK-mac” from the company “BYK-Gardner” is used.
• the evaluation of the pigment disorientation on the coated wallpaper is based on the
• Alman's flop index as well as a visual evaluation of the sparkle effect / glitter effect.
• Example 2 10 wt .-% pigment granules from Example 1 are added and mixed together thoroughly.
• the pigment granules is incorporated by means of an overhead mixer of the trade mark "GFI" in the powder clearcoat.
• the mixture is homogenized by 20 minutes of mixing at a speed of 20 min '1.
• the powder coating pigment granules mixture is

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• Paints Or Removers (AREA)
• Pigments, Carbon Blacks, Or Wood Stains (AREA)

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• 2011
  • 2011-08-26 RU RU2013116736/05A patent/RU2590541C2/ru not_active IP Right Cessation
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