EP3870651A1 - Pigments d'interférence - Google Patents

Pigments d'interférence

Info

Publication number
EP3870651A1
EP3870651A1 EP20785459.7A EP20785459A EP3870651A1 EP 3870651 A1 EP3870651 A1 EP 3870651A1 EP 20785459 A EP20785459 A EP 20785459A EP 3870651 A1 EP3870651 A1 EP 3870651A1
Authority
EP
European Patent Office
Prior art keywords
substrate mixture
layer thickness
flakes
platelets
interference pigment
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
Application number
EP20785459.7A
Other languages
German (de)
English (en)
Inventor
Stephanie Andes
Ulrich Schoenefeld
Thomas KRASEMANN
Manfred Thon
Martina WELSCH
Ralf Schweinfurth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of EP3870651A1 publication Critical patent/EP3870651A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C09C1/0018—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings uncoated and unlayered plate-like particles
    • 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
    • C09C1/003—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 comprising at least one light-absorbing layer
    • C09C1/0039—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 comprising at least one light-absorbing layer consisting of at least one coloured inorganic material
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
    • A23G3/343—Products for covering, coating, finishing, decorating
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
    • A23G3/50—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by shape, structure or physical form, e.g. products with supported structure
    • A23G3/54—Composite products, e.g. layered, coated, filled
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G4/00—Chewing gum
    • A23G4/06—Chewing gum characterised by the composition containing organic or inorganic compounds
    • A23G4/062—Products for covering, coating, finishing, decorating
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G4/00—Chewing gum
    • A23G4/18—Chewing gum characterised by shape, structure or physical form, e.g. aerated products
    • A23G4/20—Composite products, e.g. centre-filled, multi-layer, laminated
    • 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
    • C09C1/0021—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a core coated with only one layer having a high or 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
    • C09C1/0015—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
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/1004—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
    • 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
    • C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
    • C09C2200/301—Thickness of the core

Definitions

  • the present invention relates to interference pigments based on Si0 2 platelets with a wide distribution of layer thicknesses and their use in paints, coatings, powder coatings, plastics and, in particular, in cosmetic formulations and for coloring food and pharmaceutical products.
  • Interference pigments based on platelet-shaped substrates are used in all areas of technology, in particular in the area of automotive paints, plastics, printing inks, and in cosmetic formulations.
  • the interference pigments consist of platelet-shaped substrates which have particle sizes in the range from 5-150 ⁇ m and are coated with one or more metal oxides, such as, for example, T1O2 or Fe 2 03, FesC.
  • the interference pigments have a uniform layer thickness.
  • Effect pigments based on transparent silicon dioxide platelets which have a uniform layer thickness are known from WO 93/08237.
  • the pigments described there consist of thin Si0 2 platelets (thickness of the platelets from 50 ⁇ m to 5000 ⁇ m) which are coated with one or more metal oxide layers.
  • Merck KGaA consist of platelets S1O2- uniform thickness coated with a metal oxide (T1O2 or Fe 2 03) of the thickness of 10 nm to 500 nm.
  • the thicknesses of the S1O2 - Platelets are in the range from 200 nm to 900 nm.
  • Such pigments are characterized depending on the thickness of the platelets used and the applied metal oxide layer (s) as well as the type of metal oxide by particularly intense interference colors and by very strong angle-dependent color change effects, whereby the color change takes place between 2-3 colors and the viewer perceives different intensities of colors when changing his observation position to the pigmented object.
  • the problem is that an intense color flop is not always desirable in all applications.
  • Another disadvantage is that silver-white interference pigments based on SiO 2 platelets of one layer thickness cannot be produced.
  • the object of the present invention is to provide interference pigments based on Si0 2 platelets which do not have the disadvantages mentioned above.
  • interference pigments based on Si0 2 platelets known from the prior art have a uniform layer thickness, while the interference pigments according to the invention are based on a mixture of Si0 2 platelets, the platelets at least
  • the present invention relates to interference pigments based on a mixture of Si0 2 flakes, the flakes having at least 4 different layer thicknesses and the mixture of Si0 2 flakes being coated with at least one high-index layer.
  • the interference pigments according to the invention are distinguished by high color strength and purity and have subtly pronounced, natural color flop effects. The more different layer thicknesses the mixture of Si0 2 platelets contains, the less pronounced it is
  • Color flop It is also possible to suppress the color change almost completely in order to obtain neutral interference colors, e.g. a silver-white interference pigment.
  • the invention also relates to the use of the pigment mixture according to the invention in paints, varnishes, printing inks,
  • Glazes, glasses, as tracers for the production of pigment preparations and dry preparations and in particular in cosmetic formulations and for coloring food preparations and food coatings and for pharmaceutical preparations.
  • the size of the SiC substrates is not critical per se and can be adapted to the respective application.
  • the platelet-shaped substrates have a thickness distribution in the range from 0.1 to 2 ⁇ m, in particular from 0.2 to 4.5 ⁇ m and very particularly preferably from 0.2 to 1 ⁇ m.
  • the extension in the two other areas is usually 1 to 250 ⁇ m, preferably 2 to 200 ⁇ m and in particular 5 to 50 ⁇ m.
  • Si0 2 platelets are used as the substrate mixture, which are at least 4, preferably 5, 6, 7 or 8 different
  • the individual layer thicknesses preferably differ by 10 nm, in particular by 15 nm and very particularly preferably by 20 nm.
  • the base substrate mixture consists of 6, 7 or 8 different Si0 2 platelets, which are located in the
  • Preferred mixtures of Si0 2 flakes have the following layer thicknesses:
  • the SiCte platelets can be mixed with one another in any ratio, depending on the desired color flop effect.
  • the mixing ratio of the Si0 2 platelets is with
  • the mixing ratio in particularly preferred substrate mixtures is
  • the mixing ratio is a weight ratio based on the substrate mixture.
  • the Si0 2 platelets are preferably produced as disclosed in WO 93/08237. With the help of the one described there
  • Si0 2 platelets of uniform thickness can be produced.
  • the Si0 2 platelets of different thicknesses are mixed.
  • the S1O 2 platelet mixture is then covered with at least one high-index layer.
  • Si0 2 flakes with a defined layer thickness with at least one high-index layer and then to mix the coated Si0 2 flakes with different layer thicknesses.
  • the interference pigments according to the invention are produced in such a way that an S1O 2 platelet mixture with at least 4 different layer thicknesses is coated with at least one high-index layer.
  • a high-index layer is understood to mean layers which have a refractive index of n> 1.8.
  • a low refractive index layer is understood to mean layers which have a refractive index of n ⁇ 1.8.
  • the interference pigments according to the invention can easily be produced by producing at least one high-index layer on the substrate mixture consisting of Si0 2 platelets with at least 4 different layer thicknesses.
  • the high-index layer is preferably a metal oxide layer, a metal layer and a metal sulfide layer.
  • Suitable metal oxides are in particular T1O2, Fe203, FeOOH, FesC, ZGO2, ZnO, Cr203, AgO, MnO, CuO, CoO, NiO, as well as mixtures of the mentioned oxides.
  • interference pigments are based on an S1O2 platelet mixture that has at least 4 different layer thicknesses and is coated with one or more metal oxides from the group PO2, Fe2Ü3 or Fe3Ü4 or mixtures thereof or have a multilayer coating consisting of alternating high and low refractive index layers , such as PO2 - S1O2 - PO2 or PO2 - Mg0 * Si02 - T1O2.
  • the metal oxide layers are preferably applied wet-chemically, it being possible to use the wet-chemical coating processes developed for the production of pearlescent pigments; Such processes are described, for example, in DE 1467468, DE 1959988, DE 2009566, DE 22 14545,
  • the SiO2 substrate mixture is suspended in water and mixed with one or more hydrolyzable metal salts at a pFI value suitable for flydrolysis, which is chosen so that the metal oxides or metal oxide hydrates are precipitated directly on the platelets without it comes to secondary precipitations.
  • the pH is usually kept constant by adding a base and / or acid at the same time. Then the
  • Pigments are separated off, washed and dried and optionally calcined, it being possible for the calcination temperature to be optimized with regard to the particular coating present.
  • the annealing temperatures are between 150 and 1000.degree. C., preferably between 350 and 900.degree.
  • the interference pigments can be separated off, dried and, if necessary, calcined, in order then to be resuspended again for the precipitation of the further layers.
  • the coating can also take place in a fluidized bed reactor by gas phase coating, it being possible, for example, to use the methods proposed in EP 0045851 and EP 0 106235 for the production of pearlescent pigments accordingly.
  • the interference pigments of the invention have at least one high-index and at least one low-index layer or an alternating layer sequence of high-index and low-index layers.
  • Titanium dioxide and / or iron oxide are preferably used as the metal oxide with a high refractive index.
  • the metal oxide with a low refractive index is preferably S1O2, Al2O3, MgO or MgO * Si0 2.
  • the method described in US Pat. No. 3,553,001 is preferred for applying the titanium dioxide layers.
  • aqueous titanium salt solution is slowly added to a suspension of the material to be coated, which is heated to about 50-100 ° C., and a largely constant pH of about 0.5 is achieved by adding a base, such as aqueous ammonia solution or aqueous alkali solution, at the same time -5 complied with.
  • a base such as aqueous ammonia solution or aqueous alkali solution
  • the addition of the titanium salt solution and the base is stopped.
  • This process also known as the titration process, is characterized by the fact that an excess of titanium salt is avoided. This is achieved by feeding in only such an amount of hydrolysis per unit of time as is necessary for uniform coating with the hydrated TiO 2 and as can be absorbed by the available surface of the particles to be coated per unit of time. There are therefore no hydrated ones
  • Titanium dioxide particles that are not deposited on the surface to be coated. If the interference pigments contain a TiCte layer, this can be in the rutile or anatase modification. It is preferably in the form of rutile.
  • the rutilization is known to the person skilled in the art and can be carried out, for example, as described in US Pat. No. 4,038,099, US Pat. No. 5,433,779, US Pat. No. 6,626,989, WO 03/097749, US Pat. No. 4,086,100, US Pat. No. 4,867,794. Rutilization using tin oxide, as disclosed, for example, in US Pat. No. 4,867,794, is particularly preferred.
  • the thickness of the individual high and low refractive index layers on the Si0 2 platelet surface is usually 10 to 1000 nm, preferably 15 to 800 nm and in particular 20-600 nm.
  • the total thickness of all layers on the Si0 2 platelet is preferably ⁇ 3 pm.
  • layer or “coating” is understood to mean the complete encasing of an Si0 2 platelet.
  • the substrate mixture being a mixture of at least 4 different Si0 2 platelets, which differ in particle thickness:
  • the interference pigments according to the invention can also be provided with an organic or inorganic protective layer to improve the light, weather and chemical stability or to increase the compatibility in different media.
  • Post-coatings or post-treatments include, for example, silanes, silicones, adsorbent silicones, metal soaps, amino acids, lecithins, fluorine components, polyethylene, collagen or those in DE 22 15 191, DE 31 51 354, DE 3235017 or DE 3334598, EP 0632 109, US 5,759,255, DE 43 17019, DE 3929423, EP 0492223, EP 0 342533, EP 0268918, EP 0 141 174, EP 0764 191, WO 98/13426 or EP 0465805 in question.
  • the chemical and photochemical stability is further increased or the handling of the interference pigment, in particular its incorporation into different media, is made easier.
  • the interference pigments according to the invention can be post-coated directly onto the coating of the S1O2 platelets in a one-pot process. However, it is also possible first to isolate the interference pigment, if necessary to dry it out and to calcine it, and then to apply the post-coating.
  • interference pigments according to the invention are compatible with a large number of color systems, preferably from the field of lacquers, paints and printing inks, in particular security printing inks.
  • the pigments according to the invention can be used in particular in the production of forgery-proof securities, such as, for. B. bills, checks, check cards, credit cards, ID cards, etc. can be used.
  • the interference pigments are also suitable for laser marking paper and plastics as well as for applications in the agricultural sector, e.g. for greenhouse films.
  • the invention thus also relates to the use of the interference pigments according to the invention in formulations such as paints, printing inks, lacquers, plastics, ceramic materials, glasses and for cosmetics preparation.
  • the interference pigments according to the invention can also advantageously be mixed with other effect pigments and pigments, such as, for. B. transparent and opaque white, colored and
  • Black pigments as well as with platelet-shaped iron oxides, organic pigments, holographic pigments, LCPs (Liquid Crystal Polymers) and conventional transparent, colored and black luster pigments based on metal oxide-coated mica and Si0 2 platelets, etc. can be used.
  • the interference pigments can be mixed in any ratio with commercially available pigments and fillers.
  • the platelet-shaped colorants are mainly pearlescent pigments, in particular based on mica, Si0 2 platelets or Al2O3 platelets, which are only coated with a metal oxide layer, metallic effect pigments (Al platelets, bronzes), optically variable pigments (OVP's), liquid crystal polymer pigments (LCP's) or holographic
  • the spherical colorants include in particular T1O2, colored S1O2, CaS0 4 , iron oxides, chromium oxides, carbon black, organic color pigments, such as anthraquinone pigments, quinacridone pigments, diketopyrrolopyrrole pigments, phthalocyanine pigments, azo pigments, isoindoline pigments
  • the needle-shaped pigments are preferably BiOCI, colored glass fibers, a-FeOOFI, organic color pigments such as azo pigments, ß-phthalocyanine CI Blue 15.3, Cromophthal yellow 8GN (Ciba-Geigy), Irgalith blue PD56 (Ciba-Geigy) , Azomethine copper complex CI Yellow 129, Irgazine yellow 5GT (Ciba-Geigy).
  • organic color pigments such as azo pigments, ß-phthalocyanine CI Blue 15.3, Cromophthal yellow 8GN (Ciba-Geigy), Irgalith blue PD56 (Ciba-Geigy) , Azomethine copper complex CI Yellow 129, Irgazine yellow 5GT (Ciba-Geigy).
  • the interference pigments according to the invention can also be mixed with commercially available fillers.
  • Fillers include natural and synthetic mica, sodium potassium aluminum silicate, glass beads or glass powder, nylon powder, pure or filled melamine resins, talc, glasses, kaolin, oxides or flydroxides of aluminum, magnesium, calcium, zinc, BiOCI, barium sulfate, calcium sulfate, Calcium carbonate, magnesium carbonate, carbon, as well as physical or chemical combinations of these substances.
  • interference pigments according to the invention can be used advantageously both in decorative and in care cosmetics, such as in lipsticks, lip gloss, eyeliner, eye shadow, blush, sun protection, pre-sun and after-sun preparations, make-up, body
  • the concentration of the interference pigments in the application system to be pigmented is generally between 0.01 and 70% by weight, preferably between 0.1 and 50% by weight and in particular between 1.0 and 10% by weight, based on the total solids content of the system . As a rule, it depends on the specific application and can be up to 100% with loose powders.
  • the use concentration of the interference pigment according to the invention ranges from 0.01% by weight in the shampoo to 70% by weight in the press powder.
  • the concentration can be 0.01-70 wt.% In the formulation.
  • the cosmetic products such as nail polishes, lipsticks, pressed powder, shampoos, loose powders and gels, are characterized by particularly pure interference colors or a subtle one
  • interference pigments according to the invention can also be combined in the formulations with any type of cosmetic raw materials and auxiliaries.
  • cosmetic raw materials and auxiliaries include oils, fats, waxes, film formers, surfactants, antioxidants such as vitamin C or vitamin E,
  • Stabilizers such as ethanol, or ethyl acetate or butyl acetate, preservatives and auxiliaries that generally determine application properties, such as thickeners and theological additives such as bentonites, hectorites, silicon dioxides, calcium silicates, gelatins, high molecular weight carbohydrates and / or surface-active auxiliaries, etc.
  • Nanoscale dielectrics can also be added to improve the feel of the skin.
  • examples of such admixtures are Al2O3, S1O2, ZnO or T1O2, which are usually added to the formulation in amounts of 0.01-15%.
  • the formulations containing the interference pigments according to the invention can be of the lipophilic, hydrophilic or hydrophobic type.
  • the pigment mixtures according to the invention can in each case contain only one of the two phases or can also be distributed over both phases.
  • the pH values of the formulations can be between 1 and 14, preferably between 2 and 11 and particularly preferably between 5 and 8.
  • concentrations of the interference pigments according to the invention in the formulation can be between 0.001 (rinse-off products, e.g. shower gels) - 100% (e.g. glossy effect items for special applications).
  • the interference pigments according to the invention can furthermore also be combined with cosmetic active ingredients.
  • Suitable active ingredients are, for example, insect repellents, inorganic UV filters such as T1O2, UV A / BC protective filters (e.g. OMC, B3, MBC), also in encapsulated form, anti-aging active ingredients, vitamins and their derivatives (e.g. vitamin A. , C, E, etc.), self-tanners (e.g. DHA, erytrolysis, etc.) and other cosmetic active ingredients such as bisabolol, LPO, VTA, ectoin, Emblica, allantoin, bioflavanoids and their derivatives.
  • Organic UV filters are generally incorporated into cosmetic formulations in an amount of from 0.5 to 10 percent by weight, preferably from 1 to 8%, and inorganic filters from 0.1 to 30%.
  • interference pigments can contain other customary active ingredients that are gentle on the skin or that care for the skin. In principle, these can be all active ingredients known to the person skilled in the art. Particularly preferred active ingredients are pyrimidinecarboxylic acids and / or aryloximes. Among the cosmetic uses is in particular the
  • ectoin and ectoin derivatives for the care of aged, dry or irritated dullness should be mentioned.
  • EP-A-0671 161 it is described in particular that ectoin and flydroxyectoin are used in cosmetic preparations such as powders, soaps, surfactant-containing cleaning products, lipsticks, rouge, make-up, care creams and sunscreen preparations.
  • Examples of application forms for the cosmetic formulations include: solutions, suspensions, emulsions, PIT emulsions,
  • Pastes, ointments, gels, creams, lotions, powders, soaps, cleaning preparations containing surfactants, oils, aerosols and sprays are e.g. sticks, shampoos and shower products. Any customary carrier substances, auxiliary substances and, if appropriate, further active substances can be added to the preparation.
  • Ointments, pastes, creams and gels can contain the usual carrier substances, e.g. animal and vegetable fats, waxes, paraffins, starch, tragacanth, cellulose derivatives, polyethylene glycols, silicones, bentonites, silica, talc and zinc oxide or mixtures of these substances.
  • carrier substances e.g. animal and vegetable fats, waxes, paraffins, starch, tragacanth, cellulose derivatives, polyethylene glycols, silicones, bentonites, silica, talc and zinc oxide or mixtures of these substances.
  • Powders and sprays can contain the usual carrier substances, for example lactose, talc, silica, aluminum hydroxide, calcium silicate and polyamide powder or mixtures of these substances.
  • Sprays can also contain the usual propellants, for example chlorofluorocarbons, propane / butane or dimethyl ether.
  • Solutions and emulsions can contain the usual carriers such as solvents, solubilizers and emulsifiers, for example water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butyl glycol, oils, in particular
  • Cottonseed oil peanut oil, corn oil, olive oil, castor oil and sesame oil, glycerol fatty acid esters, polyethylene glycols and fatty acid esters of sorbitan or mixtures of these substances.
  • Suspensions can use the usual carriers such as liquid diluents, e.g. water, ethanol or propylene glycol,
  • Suspending agents e.g. ethoxylated isostearyl alcohols, polyoxyethylene sorbitol esters and polyoxyethylene sorbitan esters, microcrystalline cellulose, aluminum metahydroxide, bentonite, agar-agar and tragacanth or mixtures of these substances.
  • Soaps can contain the usual carriers such as alkali salts of fatty acids,
  • Cleaning products containing surfactants can contain the usual carrier substances such as salts of fatty alcohol sulfates, fatty alcohol ether sulfates, sulfosuccinic acid half-esters, fatty acid protein hydrolysates, isothionates, imidazolinium derivatives, methyl taurates, sarcosinates, fatty acid amide ether sulfates, fatty acid amide ether sulfates, fatty acid ether sulfates, glycerol ethersulfates, vegetable and fatty acid esters, glycerol ethersulfates, vegetable and fatty acid esters, fatty alcohols, fatty alcohols, vegetable and fatty acid derivatives contain.
  • carrier substances such as salts of fatty alcohol sulfates, fatty alcohol ether sulfates, sulfosuccinic acid half-esters, fatty acid protein hydrolysates, isothionates, imidazolinium derivatives
  • Face and body oils can contain the usual carrier substances such as synthetic oils such as fatty acid esters, fatty alcohols, silicone oils, natural oils such as vegetable oils and oily plant extracts, paraffin oils, lanolin oils or mixtures of these substances.
  • the cosmetic preparations can be in various forms. So you can z. B. a solution, an anhydrous preparation, an emulsion or microemulsion of the water-in-oil (W / O) type or of the oil-in-water (O / W) type, a multiple emulsion, for example of the water-in-oil type Oil-in-water (W / O / W), a gel, a solid stick, an ointment or an aerosol.
  • synthetic oils such as fatty acid esters, fatty alcohols, silicone oils, natural oils such as vegetable oils and oily plant extracts, paraffin oils, lanolin oils or mixtures of these substances.
  • the cosmetic preparations can be in various forms. So you can z. B. a solution,
  • Ectoine in encapsulated form, e.g. B. in collagen matrices and other common encapsulation materials, e.g. B. as cellulose encapsulations, encapsulated in gelatin, wax matrices or liposomally.
  • wax matrices as described in DE-OS 4308282 have proven to be favorable.
  • Emulsions are preferred.
  • O / W emulsions are particularly preferred.
  • Emulsions, W / O emulsions and O / W emulsions are available in the usual way.
  • oily lotions based on natural or synthetic oils and waxes, lanolin, fatty acid esters, in particular triglycerides of fatty acids, or oily alcoholic lotions based on a lower alcohol, such as ethanol, or a glycerol, such as propylene glycol, and / or a polyol, such as Glycerin, and oils, waxes and fatty acid esters such as triglycerides of fatty acids.
  • a lower alcohol such as ethanol, or a glycerol, such as propylene glycol, and / or a polyol, such as Glycerin
  • oils, waxes and fatty acid esters such as triglycerides of fatty acids.
  • Solid sticks consist of natural or synthetic waxes and oils, fatty alcohols, fatty acids, fatty acid esters, lanolin and other fatty substances.
  • a preparation is packaged as an aerosol, the usual propellants, such as alkanes, fluoroalkanes and chlorofluoroalkanes, are usually used.
  • the cosmetic preparation can also be used to protect the hair against photochemical damage, in order to prevent changes in color nuances, discoloration or damage of a mechanical nature.
  • it is suitably packaged as a shampoo, lotion, gel or emulsion for rinsing out, the respective Preparation before or after shampooing, before or after dyeing or bleaching or before or after the perm is applied.
  • It can also be a preparation as a lotion or gel for hairdressing and treatment, as a lotion or gel for brushing or laying a water wave, as hair lacquer, permanent wave agent, coloring agent or
  • Hair decolorizers can be chosen.
  • the preparation with light protection properties can contain adjuvants, such as interface active agents, thickeners, polymers, softening agents, preservatives, foam stabilizers, electrolytes, organic solvents, silicone derivatives, oils, waxes, anti-fat agents, dyes and / or pigments, the agent itself or the hair dye or other ingredients commonly used for hair care.
  • the present invention also relates to formulations, in particular cosmetic formulations, which, in addition to the interference pigments according to the invention, at least one component selected from the group of absorbents, astringents, antimicrobial substances, antioxidants, antiperspirants, antifoams, anti-dandruff ingredients, antistatic agents, binders, biological additives, bleaches, Chelating agents, deodorants, emollients, emulsifiers, emulsion stabilizers, dyes, humectants, film formers,
  • Fillers odorants, flavorings, insect repellents, preservatives, corrosion protection agents, cosmetic oils, solvents, oxidants, plant components, buffer substances, reducing agents, surfactants, propellants, opacifiers, UV filters, UV absorbers, denaturants, aloe vera, avocado oil, coenzyme Q10 , Green tea extract, viscosity regulator, perfume, vitamins.
  • the interference pigments according to the invention can be used for coloring pharmaceutical and food products by adding the interference pigments according to the invention, optionally with other colorants, such as natural or nature-identical dyes, in the desired proportions, to the product to be colored in amounts of 0.005 to 15% by weight, preferably 0.01 to 100 wt.%, is added.
  • other colorants such as natural or nature-identical dyes
  • coloring food extracts such as
  • Biochar, spirulina can influence the optical effect of the interference pigment in the product and, at the same time, new, iridescent color effects can be achieved.
  • Suitable natural or nature-identical dyes are in particular E 101, E 104, E 110, E 124, E 131, E 132, E 140, E 141, E 151, E 160a.
  • the invention thus relates to all formulations from the food and pharmaceuticals sector containing the interference pigment according to the invention alone or in combination with others
  • Pigments / pigment mixtures or dyes (natural or nature-identical) as colorants are included in the specification.
  • the proportion of dyes in addition to the interference pigments according to the invention, based on the food or pharmaceutical product, is preferably in the range from 0.5 to 25% by weight.
  • Coloring food, fruit and plant extracts can also be used as coloring agents, such as carrot juice, beetroot juice, elderberry juice, hibiscus juice, spinach, paprika extract, aronia extract and spirulina.
  • the total concentration of all pigments in the product to be pigmented should not exceed 50% by weight based on the product. As a rule, it depends on the specific application.
  • the food and pharmaceutical products can also be different
  • the amount of active ingredients or active ingredient mixtures is preferably 0.01-20% by weight based on the product.
  • the products are colored by using the interference pigment according to the invention alone or in combination with other pigments or colorants directly or in the presence of water and / or an organic solvent in the desired proportions, simultaneously or in succession, during or after their production, before or after Shaping (e.g. for extrusion, pelleting,
  • Exposure, granulation, etc. is added to the product to be colored. It is also possible to mix the interference pigments according to the invention with pulverulent or loose powders. The interference pigment according to the invention can also be used to color the
  • the interference pigment is usually mixed with an application medium and then applied to the product using suitable application and spraying devices.
  • the application or coating agent then ensures that the interference pigments adhere to the product surface. This is then colored accordingly.
  • the application medium or coating agent contains the interference pigment according to the invention preferably in amounts of 0.005-20% by weight, based on the application medium or the coating agent.
  • the pigment mixture according to the invention is also possible to apply to ice cream, ice cream and similar frozen products on a previously applied fat-based coating.
  • the ice to be colored is first dipped or coated with a fatty coating.
  • the interference pigment according to the invention is pneumatically applied directly as a powder to the still slightly liquid, not yet solidified surface or nebulized / atomized.
  • the interference pigment thus reaches the surface of the product to be colored.
  • the further adhesion then takes place through the further temperature-related solidification of the fat, caused by the frozen ice cream core or the frozen product.
  • the resulting gloss is optically optimally applied, as it is not incorporated into any application medium.
  • interference pigment according to the invention can, however, also be incorporated directly into the coating or application compound, and then the pigmented coating or application compound is applied to the food, for example to ice cream, chocolate products, baked goods, etc.
  • All conventional vegetable or animal types of fat with a suitable melting or solidification point, cocoa butter and mixtures with types of chocolate and fats are suitable as the fat mass.
  • the interference pigments according to the invention can also be applied directly to the chocolate coating or the fat glaze without an additional fat coating having to be applied for adhesion.
  • interference pigments When interference pigments are applied by means of a liquid or viscous suspension, the interference pigments according to the invention are first suspended in a liquid to viscous medium. This suspension is then applied to the products.
  • Such media are generally all liquid or viscous industrially manufactured media known to the person skilled in the art
  • Gloss products such as shellac, thickeners such as gum arabic, film formers such as cellulose derivatives or starch.
  • the use amount of the interference pigment according to the invention is preferably 0.5-40% by weight, in particular 1-30% by weight.
  • the area of application for surface coloring of food and pharmaceutical products is in Coloring or coating solution used at 0.1-25% by weight, in particular at 1-15% by weight.
  • the range of use is 0.05-50% by weight, in particular 2-10% by weight.
  • the coating solutions preferably contain water or organic solvents such as ethanol or isopropanol.
  • a cellulose derivative such as hydroxypropylmethyl cellulose, is preferably used as a film former in the coating solutions.
  • Application solutions with cellulose derivatives which instead of water contain 5-80% by weight of a suitable organic solvent are particularly preferred.
  • the alcoholic or alcoholic-aqueous, cellulose-containing application solutions have significant application advantages:
  • the interference pigment according to the invention is generally mixed with the application medium and then applied to the food or pharmaceutical product using suitable application and spray devices or by hand. The application or coating agent then ensures that the interference pigments adhere to the surface of the food or pharmaceutical product. This is then colored accordingly.
  • the application and coating solutions contain preferably 0.1-20% by weight, in particular 2-15% by weight, of the interference pigment according to the invention.
  • Preferred dry powder mixtures for coatings contain a cellulose derivative such as hydroxypropylmethyl cellulose,
  • Such dry powder mixtures preferably contain the interference pigment according to the invention in amounts of 0.01-50% by weight, in particular 0.5-40% by weight, based on the powder mixture. This one
  • Colorings, flavorings, vitamins, sweeteners, etc. can also be added to dry powder mixtures as required.
  • the pigmented liquid and edible lacquer systems can be used, for example, to color the inside of glasses and other vessels intended to hold liquid, pasty or solid foods.
  • the lacquer can be poured into the vessel or distributed, sprayed or applied in a targeted manner using a brush or the like. After a short time the lacquer dries and you get either a completely or partially colored glass or vessel.
  • a cellulose is used as an adhesive or coating mediator. This is preferably hydroxypropylmethyl cellulose E464, low viscosity. However, other types of cellulose can also be used individually or in combination, such as methyl cellulose,
  • Sodium carboxymethyl cellulose Corresponding functional film formation on the product surface is important here.
  • organic solvents such as ethanol or isopropanol (pharmaceutical grade) is also important.
  • ethanol and / or isopropanol in the paint system leads to very rapid drying, especially in connection with an air drying system.
  • silicon dioxide which often improves the adhesion to the glass or container, is optional in the paint systems.
  • Products suitable for coloring or coating are, for example, edible paper, wafers, Easter eggs, sugar confectionery, cake decorations, compressed products, coated tablets, chewing gum, rubber goods, fondant products, marzipan products, filling compounds, cocoa and fat icing, chocolate and products containing chocolate, ice cream, cereals Snack products, coating compounds, cake mirrors, sugar sprinkles, nonpareils, jelly and gelatine products, sweets,
  • the combination of the interference pigment according to the invention is with
  • Flavors (powder or liquid flavors), acids and / or with sweeteners, such as aspartame, possible to emphasize the optical effect in terms of taste.
  • the interference pigments according to the invention can also be used as food colorants in hot, boiling oil or fat for the production and processing of corresponding foods.
  • the temperature of the oils and fats colored with the interference pigments according to the invention is preferably 80-220 ° C.
  • the interference pigments according to the invention are incorporated directly into the oil or fat. In the case of fats, this incorporation is possible both in the liquid and pasty state.
  • suitable oils and fats all hardened and unhardened oils and fats suitable for the processing and production of food come into consideration, e.g. palm oil, coconut oil, rapeseed oil, sunflower oil, olive oil, safflower oil and mixtures thereof.
  • the use concentration of the interference pigments according to the invention in the oils and fats is preferably 0.5-20% by weight, preferably 2-10% by weight, based on the oil or fat used.
  • Foods that are suitable for this type of application are e.g. potato products such as French fries, potato wedges, croquettes,
  • Meat and fish products such as schnitzel, fish fingers, chicken nuggets, vegan and vegetarian meat substitutes, squid rings,
  • Vegetable products such as spring rolls
  • Baked goods such as donuts, crepe eggs, donuts, Berlin bales, quark balls
  • the interference pigment according to the invention can be used in a variety of ways Coloring and finishing of the products can be used.
  • the invention thus also relates to formulations containing the interference pigment according to the invention.
  • the present invention also relates to formulations, in particular cosmetic formulations, which, in addition to the interference pigments according to the invention, contain at least one component selected from the group of absorbents, astringents, antimicrobial substances, antioxidants, antiperspirants,
  • Antifoam agents anti-dandruff agents, antistatic agents, binders, biological additives, bleaching agents, chelating agents, deodorants, emollients, emulsifiers,
  • Emulsion stabilizers dyes, humectants, film formers, fillers, odorants, flavorings, insect repellents, preservatives, corrosion protection agents, cosmetic oils,
  • Solvents oxidizing agents, plant components, buffer substances, reducing agents, surfactants, propellants, opacifiers, UV filter, UV absorber, denaturant, aloe vera, avocado oil, coenzyme Q10, green tea extract, viscosity regulator, perfume, vitamins, enzymes, trace elements, proteins, carbohydrates, essential fats, minerals, natural dyes, nature-identical dyes, biochar, acids , Sugar, fats, flavor enhancers,
  • Film formers sweeteners, coloring food / fruit and plant extracts, spirulina, cocoa, wax, gum arabic, cellulose, cellulose derivatives, starch, protein and protein derivatives, carrageenan.
  • Si0 2 platelets with a particle thickness of 360 nm are heated to 75 ° C. in 2000 ml of deionized water while stirring.
  • the pH of the suspension is now adjusted to 2.2 with hydrochloric acid (15% HCl).
  • 360 g of a TiOC solution 400 g TiCl / l are added at a dosing rate of 2.0 ml / min until the color end point (silver) is reached, whereby the pH value is increased by simultaneous dropping of 32%.
  • sodium hydroxide solution (30%
  • the pH value is adjusted to 1.8 by adding SnCU solution (22 g / l) dropwise. The remainder of 100 ml of SnCU solution (22 g / l) is then added. The pH is kept constant at 1.8 with 32% sodium hydroxide solution. After the addition has ended, stirring is continued for 10 minutes. At a constant pH value, 345 ml of a TiOCb solution (400 g TiCl / l) are now added until the color end point (silver) is reached, the pH value being kept constant at 1.8 by simultaneous dropwise addition of 32% sodium hydroxide solution . After the addition has ended, stirring is continued for 10 minutes, and the suspension is filtered off with suction and washed salt-free with deionized water. After drying at 120 ° C., the pigment is calcined at 850 ° C. for 45 minutes. An intense blue color is obtained
  • Example A1 Sugar-coated products - shellac application:
  • Shellac ( Capol® 425, Capol GmbH) is mixed with 2 parts of ethanol (food grade, min. 90% by volume). Then 2-8% interference pigment from Example 1 is added and mixed. Then you put the glossy, sugar-coated products in a conventional coating pan.
  • drying air is directed over the products.
  • Example A2 Products coated with dark chocolate - application with
  • Gum arabic solution (Capol 254, Capol GmbH) is mixed with 2-10% interference pigment from example 1. Then you put the non-glossy, chocolate-coated products in a conventional coating pan.
  • Example A3 Sugar-coated, white chewing gum - film coating
  • HPMC film coating powder compound (Bio ground GmbH) are first mixed into 25% ethanol (food grade, min 90% by volume). Then 70% cold water is added. The mixture is stirred until the HPMC compound is completely dissolved.
  • the chewing gums are placed in a coating pan and rotated.
  • the coating pan must be equipped with suitable drivers.
  • a two-substance spray gun or spray system is placed in front of the opening of the coating pan. The necessary drying air is switched on.
  • the sugar is heated to 100 ° C with the water and then glucose syrup is added.
  • the solution is then heated to 145 ° C.
  • the interference pigment can be mixed with the sugar or added mixed with the glucose syrup. This variant does not contain any acid, as this would make the caramelization too strong.
  • the gelatine is soaked in twice the amount of water at 60 ° C. Sugar and water are heated to 100 ° C, then the glucose syrup is added. The mixture is heated further to 120.degree. C. and then allowed to cool to approx. 85.degree.
  • the interference pigment according to Example 1 the citric acid, the aroma and the gelatin solution are stirred in, and the de-aerated gelatin mixture is poured into greased molds using the pouring funnel. The product is allowed to cool for about 16 hours.
  • the interference pigment according to Example 1 or Example 3 can again be mixed directly with the sugar or introduced with the glucose syrup.
  • the interference pigment according to Example 1 is stirred into water. Additional dyes are then optionally added. Finally, the film former (HPMC) is sprinkled into the suspension. Due to the increasing viscosity, the stirring speed must also be increased accordingly. After approx. 40-60 minutes the HPMC is completely dissolved and the solution can now be sprayed onto the tablets.
  • HPMC film former
  • the spray application is carried out using a common standard coating process.
  • Example A7 Manufacture of tablets: Tablets are colored by means of what is known as film coating
  • Aqueous application solutions (systems with Film formers, plasticizers, etc.) are sprayed continuously in so-called coaters onto the tablets rotating in them.
  • the amount of application solution depends on both the desired color effect and the required polymer application.
  • Disperse the interference pigment and Micronasphere ® in phase A water Acidify with a few drops of citric acid around the To reduce viscosity, sprinkle in Carbopol while stirring. When the solution is complete, slowly stir in the pre-dissolved phase B and then phase C. Finally, adjust the pH to between 7.0 - 7.5.
  • phase A Add the components of phase A together and premix. Then add the powder mixture drop by drop with the add molten phase B. The powders are pressed at 40-50 bar.
  • the silver-white pigment is absolutely light-stable.
  • phase B The components of phase B are heated to 75 ° C. and melted.
  • the pigments of phase A are added and everything is stirred well.
  • the lipstick mass is then stirred for 15 minutes in the pouring apparatus, which is heated to 65.degree.
  • the homogeneous melt is poured into the casting mold, which has been preheated to 55 ° C.
  • the molds are then cooled and the castings are removed while cold. After warming the lipsticks to room temperature, the lipsticks are briefly flamed.
  • the pigment and Nailsyn ® Sterling Silver 60 are weighed together with the varnish base, mixed well with a spatula by hand and then stirred for 10 min at 1000 rpm.
  • phase B Melt all components of phase B except Demacryl 79 together at about 85 ° C., add Demacryl 79 with stirring and allow to stir for 20 minutes until everything is homogeneously distributed. Heat the components of phase C to approx. 85 ° C. Stir the interference pigment from phase A into phase C. Add phase C to phase B, stir further and homogenize for 1 min with the Ultra-Turrax T25 at 8000 rpm. Allow to cool while stirring and add phase D at 40 ° C.
  • Example A14 Ice cream on a stick coated with dark chocolate
  • Fat coating 99.97% fat compound (vegetable fat, sugar, lecithin, aroma) Kerry GmbH
  • the interference pigment is evenly applied or atomized to the still liquid ice cream surface by means of a pneumatic powder atomizer.
  • the interference pigment is fixed on the surface by the now completely solidifying fat.
  • the application by means of a pneumatic application process creates a very uniform, high-gloss interference effect on the product surface with a very low dosage at the same time.
  • Example A15 Ice cream on a stick coated with dark chocolate
  • the interference pigment is evenly applied or atomized to the still liquid ice cream surface by means of a pneumatic powder atomizer.
  • the interference pigment is fixed on the surface by the now completely solidifying fat.
  • Example A16 Muffin with coating (dark cocoa icing)
  • Example A17 Fixing interference pigments on food surfaces by means of gum arabic solution a) Gum arabic solution
  • Example A18 Fatty coating on ice cream
  • Fat Compound 264-04-04 91% (Kerry) (vegetable fat, sugar, lecithin flavor) interference pigment according to 7% example 1
  • Cocoa (powder, high fat) 2% (Stollwerck GmbH) 100%
  • Fat Compound 264-04-04 86% (Kerry) (vegetable fat, sugar, lecthin flavor)
  • Cocoa (powder, high fat) 6% (Stollwerck GmbH) 100%
  • Fat Compound 264-04-04 84% (Kerry) (vegetable fat, sugar, lecthin aroma) Interference pigment according to 8%
  • Example 1 b-carotene 32107 2% (Wild GmbH) Cocoa (powder, high fat) 6% (Stollwerck GmbH) 100 %
  • Fat Compound 264-04-04 86% (Kerry) (vegetable fat, sugar, lecthin flavor)
  • Example A19 Decoration of baked goods with a fatty one
  • Fat Compound 264-04-04 90% (Jancke GmbH) (vegetable fat, sugar, lecthin aroma) interference pigment according to 8% example 1
  • Cocoa (powder, high fat) 2% (Stollwerck GmbH) 100%
  • Example A20 Decoration of chocolates with a fatty one
  • Cocoa (powder, low fat) 2% (Barry Callebaut)
  • Example A21.1 Golden decorative film in vodka liqueur, white, transparent lacquer base (A):
  • the cellulose is slowly added to the water-ethanol mixture with stirring (magnetic or propeller stirrer).
  • silicon dioxide (Aerosil ® 200F, Evonik GmbH) can be added to the solution.
  • vanilla flavor (Döhler GmbH)
  • Lacquer pigment suspension is poured into a transparent drinking glass. Then the paint is distributed homogeneously on the inside by shaking and moving. After the lacquer has dried, the drink can be poured. The lacquer slowly dissolves and at the same time releases the interference pigment, which can be seen very well in the drink.
  • the cellulose is slowly added to the water-ethanol mixture with stirring (magnetic or propeller stirrer)
  • Lacquer pigment suspension is poured into a transparent drinking glass. Then the paint is distributed homogeneously on the inside by shaking and moving. After the lacquer has dried, the drink can be poured. The lacquer slowly dissolves and at the same time releases the interference pigment, which can be seen very well in the drink.
  • Example A21 .3 Silver effect in Blue Curacao
  • Lacquer pigment suspension is poured into a transparent drinking glass. Then the paint is distributed homogeneously on the inside by shaking and moving. After the lacquer has dried, the drink can be poured. The lacquer slowly dissolves and at the same time releases the interference pigment, which can be seen very well in the drink.
  • Example A21.4 Copper gold-colored effect in coffee liqueur lacquer base (D): 40% ethanol (96% vol.) (Merck KGaA)
  • the cellulose is slowly added to the water-ethanol mixture with stirring (magnetic or propeller stirrer)
  • silicon dioxide (Aerosil 200F, Evonik GmbH) can be added to the solution.
  • Lacquer pigment suspension is sprayed into a transparent drinking glass. After the lacquer has dried, the drink can be poured. The lacquer slowly dissolves and at the same time releases the interference pigment, which can be seen very well in the drink.
  • Example A21.5 Copper-colored effect in vanilla pudding
  • the transparent dessert bowl is decorated with the lacquer / interference pigment suspension using a brush. After the lacquer has dried, the finished vanilla pudding can be poured into the glass.
  • Example A21.6 Shiny pink effect in transparent vodka liqueur
  • the cellulose is slowly added to the water-ethanol mixture while stirring (magnetic or propeller stirrer) After a few minutes the cellulose has dissolved to the extent that 0.04% E120 (Pharmorgana GmbH)
  • Lacquer pigment suspension is poured into a transparent drinking glass. Then the paint is distributed homogeneously on the inside by shaking and moving. After the lacquer has dried, the drink can be poured. The paint slowly dissolves and sets at the same time free the interference pigment, which can be seen very clearly in the drink. The soluble dye (E120), which can also be seen in the glass, is also released.
  • Example A22 pigmentation of deep-frying oils or fats
  • Biskin frying fat (palm fat-based)
  • Palmetta palm fat-based (Walter Rau GmbHFI) + 10% interference pigment according to Example 1 Used in deep fryer for:
  • Example A23.1 decoration of chocolate foam kisses Production of the basic lacquer system:
  • Chocolate foam kisses can be dipped, painted or coated.
  • Chocolate foam kisses can be dipped, painted or coated.
  • Example A23.3 Product to be decorated: Cake bar 88% basic lacquer system (see example A23.1)
  • Example A23.4 Product to be decorated: Lady biscuits 85% basic lacquer system (see example A23.1)
  • Example A23.5 Product to be decorated: baked goods (muffins)
  • Example A23.6 Product to be decorated: Sponge cake (from Wikinger) (marzipan / cocoa glaze)
  • Example A23.7 Product to be decorated: fruit gums, apple pieces, raisins, strawberries
  • Example A23.8 Product to be decorated: Meringue (foam biscuits made from sugared egg whites)
  • Example A23.9 Product to be decorated: marshmallows
  • Example A23.10 Product to be decorated: salted pretzel
  • Example A23.11 Product to be decorated: ice cream cones
  • Example A23.12 Product to be decorated: liquorice thaler
  • Example A23.13 Product to be decorated: chocolate dragees
  • Example A23.14 Spray application (airbrush) 85% basic paint system (see example A22.1)
  • Example A23.15 Spray application (airbrush or in a coated tablet): Production of the basic paint system:
  • the cellulose is slowly added to the water-ethanol mixture with stirring (magnetic or propeller stirrer). After a few minutes, the cellulose has dissolved so far.
  • Example A24 Flat decoration of chocolate and chocolate products with interference pigments without spraying a)
  • Liquid edible food varnish Base solution varnish (without coloring) [A]:
  • Methyl cellulose and hydroxypropylmethyl cellulose are mixed and added to the ethanol initially taken with stirring. The stirring is continued continuously and the water is added.
  • the paint system is ready after 1.5 hours of stirring.
  • interference pigments according to the invention can now be stirred into the lacquer solution produced in this way as desired. Furthermore, it is possible in addition to the interference pigments aromas and / or
  • Add sweeteners of all kinds natural coloring agents, e.g. E141 or synthetic coloring agents, e.g. E129, E131, E133, E124, E110 or coloring fruit and plant extracts.
  • natural coloring agents e.g. E141
  • synthetic coloring agents e.g. E129, E131, E133, E124, E110 or coloring fruit and plant extracts.
  • Example A25 Coloring wafers Recipe and manufacturing process for all examples:
  • Example A25.1 2% interference pigment according to Example 1
  • Example A25.2 4% interference pigment according to Example 1
  • Example A25.3 6% interference pigment according to Example 1
  • Example A25.4 8% interference pigment according to Example 1
  • Example A25.5 5% interference pigment according to Example 1 + 0.03% biochar E153
  • Silver tones are achieved; the intensity of the silver hue is adjusted by adding E153.
  • Example A25.6 5% interference pigment according to Example 1 + 0.02% carmine red E120 (Fiorio Colori SA) Wafers with a pink gloss are obtained.
  • Example A25.7 5% interference pigment according to Example 1 + 1% beetroot E160 (Chr.Hansen A / S)
  • Example A25.8 5% interference pigment according to Example 1 + 0.8% aroma (Symrise GmbH) + 0.5% sweetener aspartame
  • the simultaneous use of the sweetener and the aroma does not impair the resulting gloss effect.
  • the aroma and the sweetener are tasty and clearly perceptible.
  • Eggs are hard-boiled and then colored using an application medium according to the invention. To do this, a small amount of the medium is placed on a glove. The other too
  • the Hand is wearing a glove.
  • the boiled egg should be warm and dry.
  • the application medium is distributed evenly on the warm eggshell by quickly rubbing the hands back and forth. Due to the residual heat of the ice, the application medium dries off quickly. A very uniform pigment coloration is obtained.
  • the eggs can be white or brown-skinned depending on the interference pigment selected.
  • Example A27 Coloring chocolate and pralines Finished pralines, chocolates and chocolate-coated products im
  • the interference pigment application medium can be used to decorate or decorate afterwards.
  • the application medium is applied to the areas of the chocolate product to be colored using a fine nozzle, spatula or brush. It is then dried at room temperature until the paint coating is completely dry.
  • the viscosity of the medium can be reduced by adding additional water. This allows the medium to be better applied to certain product areas if necessary. This increases the drying time.
  • Example A28 Pre-coloring of chocolate molds Application medium: 80% by weight of water
  • the form is dried in a convection oven or drying cabinet.
  • the shape can be colored using suitable nozzles, pipettes, brushes or by hand.
  • the viscosity of the medium can be reduced by adding additional water. This allows the medium to be better applied to certain product areas if necessary. This increases the drying time.
  • part of the water can be replaced by ethanol (food grade 80 - 99.99% by volume) when producing the application medium. This speeds up drying. 5 - 30% of the water can be replaced by ethanol.
  • the corresponding interference pigments are then added to this base, prepared as in example A26, individually or in combination or in addition other colorings or coloring fruit and plant extracts.
  • Example A30.1 Chocolate cereals, round, extruded Cereals are placed in a kettle. This is equipped with drivers. Drying air is switched on (40 - 50 ° C)
  • Application medium 10% by weight interference pigment according to Example 1
  • Example A30.2 Chocolate cereals, round, extruded
  • Example A30.3 Grain cereals, oblong, extruded
  • Example A30.4 Coloring, decoration of popcorn
  • Example A30.4a Popcorn, sugared weight of popcorn: 300 g
  • 10 - 15 g of the medium / order are applied. This is distributed on the popcorn while drying air is supplied. As soon as an order has dried, an additional amount can be applied to the
  • Popcorn can be applied until the desired color effect is achieved.
  • the popcorn is then dried, e.g. in a drying cabinet or oven, until the initial humidity is reached again.
  • Example A30.4b Popcorn with sugar
  • Example A31 Dragees (chocolate, sugar / sugar-free)
  • the application medium containing interference pigments is applied by hand to the rotating pan in the same way as conventional coating Chocolate dragees applied.
  • layers are applied one after the other until the desired effect is achieved. As soon as a layer has dried, it can be added again. A small application results in a marble effect, while a higher application leads to a very even gloss color.
  • ethanol content can be varied to adapt the recipe or replaced entirely by water and 1,2-propanediol.
  • Example A31.1 Hazelnuts coated with dark chocolate
  • Dragees are placed in a cauldron. This is equipped with drivers. Drying air is switched on (25 ° C)
  • Example A31.2 Chocolate coffee beans coated with milk chocolate
  • Example A31.3 Raisins coated with white chocolate Production as in example A30
  • Example 31.5 Isomalt-coated chewing gum pads, white
  • Example A31.7 Further surface optimization of coated tablets
  • the gloss and color effect can be further improved if, after the application medium has been applied and a certain drying time, a mixture of shellac,
  • Ethanol and interference pigment is applied. Ideally, this can be the one or those already contained in the medium
  • Interference pigments act, but other combinations are also possible.
  • the shellac-ethanol-interference pigment mixture is poured by hand over the coated tablets rotating in the kettle and dried with fresh air. Alternatively, the mixture can also be sprayed.
  • ethanolic shellac solution e.g. Capol ® 425 or Crystallac ® (from Mantrose-Haeuser Co., Inc.)
  • the shellac solution Before adding the interference pigment, the shellac solution can be further diluted with ethanol (e.g. 1 part shellac solution diluted with twice or 5 times the amount of ethanol (food grade)
  • ethanol e.g. 1 part shellac solution diluted with twice or 5 times the amount of ethanol (food grade)
  • Example A32 Coloring of compressed materials Using the following application medium, a uniform
  • Coloring of the compressed products can be achieved and a protective layer is formed around the compressed products.
  • the coloring takes place in a coating pan.
  • sweeteners and / or flavors can optionally be added.
  • the ethanol content can be varied to adapt the recipe, or ethanol can also be completely replaced by water and 1,2-propanediol.
  • Example A32.1 Peppermint compact, white Product weight: 500 g
  • Application medium 8% by weight interference pigment according to Example 1
  • Example A32.2 Lemon Compress, yellow-copper red Product weight: 500 g
  • Example A33 coloring, decoration of marshmallows
  • the application takes place in a coating pan.
  • Example A34 Positioning of decorative lace and decorative leaves
  • Decorative lace is understood to mean filigree shapes and decorations which are produced by thinly spreading an application medium in silicone molds. These are removed from the molds after a certain drying time and can be used to decorate e.g. confectionery, ice cream, chocolate, eggs, pralines, baked goods, cakes and tarts, desserts, pates, aspic and other foods.
  • the drying time can be set so that the products still show a certain elasticity.
  • the decors produced as edible body decorations are used as edible body decorations.
  • the decorations are applied to the corresponding parts of the body using suitable adhesives.
  • the paste can also be used directly as edible cosmetics can be applied to parts of the body to be colored. The body heat causes the skin to dry quickly.
  • Decorative leaves are very thin, leaf-shaped structures that are produced by spreading the pigment medium very thinly on flat surfaces. These documents can be made of plastic or metal, for example. After spreading, the products are dried, e.g. in a drying cabinet or oven, until they are completely dry. After drying, the decorative leaves can be removed from the base and can now be cut or chopped as a whole, partially or appropriately to decorate
  • Foods such as those listed in the decorative lace described above, can be used.
  • Example A34.1 Decor lace recipe: 76% by weight water
  • sweeteners and / or flavors can optionally be added.
  • the proportion of water and 1,2-propanediol can be varied in order to adapt the recipe to customer requirements.
  • Ethanol can also be added to speed up drying.
  • Example 3 10% by weight interference pigment according to Example 3
  • sweeteners and / or flavors can optionally be added.
  • the proportion of water and 1,2-propanediol can be varied in order to adapt the recipe to customer requirements.
  • Ethanol can also be added to speed up drying.
  • the application medium is spread very thinly on suitable substrates (plastic, metal, etc.) and then dried in a drying cabinet or stove at approx. 70 ° C until it is completely dry.
  • the decorative leaves can then be completely detached and used as a whole, partially or cut into small pieces as decorative decorations for food products as described under Decorative Lace.
  • citric acid crystalline (Merck KGaA) (A)
  • Buffer salts to adjust the pH (as required) Add flavor, sweetener, buffer salts up to 100%, balance over
  • Flavors and sweeteners can also be added after mixing (A) and (B).
  • the pH value is then adjusted to 3.5 with citric acid or buffer salts.
  • Food dyes, interference pigments (food quality) are then stirred into this basic mass individually or in combination.
  • red-coloring plant extract (Rudolf Wild GmbHFI & Co. KG)
  • the colored base materials of Examples A35.1 a to A35.1 n are placed in negative molds made of metal, plastic or silicone and placed for 8-12 h at 25 ° C. and then for 10-14 h at 40 ° C. either in an air-conditioned drying cabinet Drying room, or oven dried. Depending on the adjustable air circulation or humidity, the required drying time can be reduced accordingly. Too high a temperature at the beginning of the drying leads to a strong, less permeable film formation on the surface of the mass, as a result of which the further drying of the mass underneath is greatly delayed or completely prevented.
  • Example A36 Foils or surface decoration
  • Example A36.1 Foils or surface decoration
  • Buffer salts to adjust the pH (as required) Add flavor, sweetener, buffer salts up to 100%, balance over
  • Buffer salts to adjust the pH (as required) Add flavor, sweetener, buffer salts up to 100%, balance over
  • the 3D elements are produced by filling the finished base material (see example A36.1) into suitable molds.
  • Plastic or metal molds for example, are suitable here, as they are also used for the production of chocolate pralines or chocolate figures, marzipan figures, etc. Silicone molds are inferior because of their
  • the amount of 3D mass filled in depends on the viscosity and the desired height of the 3D shapes and can be selected individually. It should be noted, however, that more filling compound also results in a longer drying time. then the filled molds are dried. It is important here that the drying process does not take place too quickly at too high temperatures. This means that drying temperatures that are too high are not selected at the beginning of the drying process. This would dry the surface of the mass, so that no further moisture can be extracted from deeper layers. This leads to a partial drying of individual zones of the base material.
  • Air inclusions can also no longer escape upwards and lead to imperfections during drying. Low humidity values support the drying process positively.
  • drying should start slowly and take place at a low temperature - preferably overnight - for several hours, e.g. at room temperature 20 - 35 ° C, 24 hours.
  • a low temperature e.g. at room temperature 20 - 35 ° C, 24 hours.
  • the mold mass already increased after the first drying phase (after approx. 6 - 10h) largely adapted to the shape, the final drying can take place at a higher temperature in a drying cabinet or drying room. Temperatures of 30 to 45 ° C have proven useful here.
  • the finished 3D shapes can easily be removed by hand or they will fall out of the shapes by themselves.
  • chocolate can also be filled into the molds, for example. After cooling, the now decorated chocolate can be removed from the mold.
  • the drying process is divided into a longer, first phase at (approx. Room temperature -30 ° C) and a second, shorter drying phase at higher temperatures (approx. 30 - 40 ° C).
  • a high level of humidity increases the drying time and should preferably be avoided.
  • chocolate the molds produced in this way can be applied to finished chocolate products for decoration, or they can also be filled with chocolate yourself. This can even be done in the form itself.
  • Example A36.4 Further use of the base material
  • Example A36.4a Foils and flakes
  • the finished base compound from example A36.2 can alternatively also be spread over flat plastic or metal surfaces using a knife or spatula, etc. After subsequent drying, a thin layer is obtained, which can either be used like a film to decorate the food itself, or divided into small pieces or shapes as small flakes or decorations on food of all kinds for decoration.
  • Example A36.4b Direct product decoration
  • the finished base mass from example A36.2 can also be used directly as such for decoration on chocolate products, for example.
  • the 3D compound is applied thinly to the areas of the product to be colored.
  • decorated surfaces are obtained in which the mass adapts exactly to the structure of the product surface.
  • other foods such as biscuits or cakes, can also be decorated this easily and efficiently.
  • the drying time can be reduced by adding, for example, ethanol and / or reducing the amount of propanediol and / or the amount of sodium carboxymethyl cellulose.
  • Example A36.4c Decorative intermediate layers Decorative stripes can also be produced in chocolate products. This is done, for example, by first filling the mold with a little warm chocolate, letting it cool down, and then pouring the base material in a thin layer over the chocolate. After the mandatory drying time, the mold can be filled with another layer of warm chocolate. Thus, after the second chocolate layer has cooled down, a chocolate figure with a colored decorative strip between them is obtained. This is very nicely visible on the side of the chocolate figure.
  • Example A37 packet soups
  • the interference pigment is added and stirred evenly into the product.
  • the vegan spread can then be stored in the refrigerator (approx. 1 week) or heated in a suitable, closed vessel at 100 ° C for 20 minutes. It should be noted that in this case the proportion of spices may have to be adjusted. Thereafter, storage in a closed vessel at room temperature for a longer period of time is possible.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Cosmetics (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paints Or Removers (AREA)
  • Confectionery (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Grain Derivatives (AREA)
  • Edible Oils And Fats (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Alcoholic Beverages (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Seeds, Soups, And Other Foods (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

La présente invention concerne des pigments d'interférence à base de plaquettes de SiO2 ayant une large distribution d'épaisseur de couche et leur utilisation dans des peintures, des vernis, des revêtements en poudre, des matières plastiques et, en particulier, dans des formulations cosmétiques et pour colorer des produits alimentaires et pharmaceutiques.
EP20785459.7A 2019-10-02 2020-09-25 Pigments d'interférence Pending EP3870651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019006869.6A DE102019006869A1 (de) 2019-10-02 2019-10-02 Interferenzpigmente
PCT/EP2020/076874 WO2021063823A1 (fr) 2019-10-02 2020-09-25 Pigments d'interférence

Publications (1)

Publication Number Publication Date
EP3870651A1 true EP3870651A1 (fr) 2021-09-01

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US (1) US11746240B2 (fr)
EP (1) EP3870651A1 (fr)
JP (1) JP2022551545A (fr)
CN (1) CN114521207A (fr)
DE (1) DE102019006869A1 (fr)
WO (1) WO2021063823A1 (fr)

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JPWO2023281936A1 (fr) * 2021-07-06 2023-01-12
CN116395961A (zh) * 2023-03-23 2023-07-07 佛山市杨森化工有限公司 一种液体悬浮剂的生产工艺及配方

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JP2022551545A (ja) 2022-12-12
US20220356356A1 (en) 2022-11-10
DE102019006869A1 (de) 2021-04-08
WO2021063823A1 (fr) 2021-04-08
CN114521207A (zh) 2022-05-20

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