EP3870651A1

EP3870651A1 - Interference pigments

Info

Publication number: EP3870651A1
Application number: EP20785459.7A
Authority: EP
Inventors: Stephanie Andes; Ulrich Schoenefeld; Thomas KRASEMANN; Manfred Thon; Martina WELSCH; Ralf Schweinfurth
Original assignee: Merck Patent GmbH
Current assignee: Merck Patent GmbH
Priority date: 2019-10-02
Filing date: 2020-09-25
Publication date: 2021-09-01
Also published as: US20220356356A1; CN114521207A; US11746240B2; JP2022551545A; DE102019006869A1; WO2021063823A1

Abstract

The present invention relates to interference pigments based on SiO₂-platelets with a broad layer thickness distribution and to their use in paints, varnishes, powder coatings, plastics and, in particular, in cosmetic formulations and for colouring food and pharmaceutical products.

Description

Interference pigments

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. As a rule, the interference pigments consist of platelet-shaped substrates which have particle sizes in the range from 5-150 μm 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 μm to 5000 μm) which are coated with one or more metal oxide layers.

Strongly colored red effect pigments based on Si0 ₂ platelets with a uniform layer thickness are described in DE 102005002124. These pigments include Si0 ₂ flakes coated with iron oxide, the total thickness of the pigments not being greater than 500 nm (± 30 nm).

The metal oxide on the market Si0 ₂ flakes under the brand name of the Fa Xirona ^®. 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, however, 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.

Surprisingly, it has been found that in the case of interference pigments based on coated SiO ₂ flakes with a broad layer thickness distribution, the expression of the color change can be controlled in a targeted manner. The color flop behavior can be adjusted from very pronounced to very subtle to the respective application, while maintaining high color purity and color strength.

It is even possible to suppress the color flop to such an extent that neutral interference pigments, such as silver-white interference pigments, are available with a high gloss and pure white body color.

The 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

4, preferably 5, 6, 7 or 8, have different layer thicknesses.

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,

Security printing inks, plastics, ceramic materials,

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. As a rule, the platelet-shaped substrates have a thickness distribution in the range from 0.1 to 2 μm, in particular from 0.2 to 4.5 μm and very particularly preferably from 0.2 to 1 μm. The extension in the two other areas is usually 1 to 250 μm, preferably 2 to 200 μm and in particular 5 to 50 μm.

_{Preferably, Si0 2} platelets are used as the substrate mixture, which are at least 4, preferably 5, 6, 7 or 8 different

Have layer thicknesses. The individual layer thicknesses preferably differ by 10 nm, in particular by 15 nm and very particularly preferably by 20 nm.

In a preferred embodiment, the base substrate mixture consists of 6, 7 or 8 different Si0 ₂ platelets, which are located in the

Differ in thickness. Preferred mixtures of Si0 ₂ flakes have the following layer thicknesses:

• 360 nm

• 380 nm

• 400 nm

• 420 nm

• 440 nm

• 460 nm

• 480 nm

• 500 nm or 360 nm

• 380 nm

• 400 nm

• 420 nm

• 440 nm

• 460 nm

• 480 nm or

• 300 nm

• 320 nm

• 340 nm

• 360 nm x 380 nm

• 400 nm

• 420 nm

• 440 nm or

300 nm 310 nm • 340 nm

• 350 nm

• 370 nm

• 380 nm or

• 400 nm

• 420 nm

• 440 nm x 460 nm

• 480 nm

• 500 nm

• 520 nm.

The SiCte platelets can be mixed with one another in any ratio, depending on the desired color flop effect. The more uniform the layer thickness ratio of the mixture, e.g. (1: 1: 1: 1: 1 ...) and the higher the number of layer thicknesses used (> 4), the more subtle the resulting color transitions (color flop properties) of the interference pigments .

In a preferred embodiment, the mixing ratio of the Si0 ₂ platelets is with

4 different layer thicknesses each 25%

5 different layer thicknesses each 20% 6 different layer thicknesses each 16.67%

7 different layer thicknesses each 14.29%

8 different layer thicknesses each 12.5%

9 different layer thicknesses each 11.11%

10 different layer thicknesses each 12.5%, the sum of the mixture of Si0 ₂ platelets always giving 100%. In particular, when using at least 6 different layer thicknesses, it is possible to obtain interference pigments with purely neutral interference colors that have almost no color transition but show a high gloss.

In a very particularly preferred embodiment, the mixing ratio in particularly preferred substrate mixtures is

12.5% Si0 ₂ platelets with a particle thickness of 360 nm

12.5% Si0 ₂ flakes with a particle thickness of 380 nm 12.5% Si0 ₂ flakes with a particle thickness of 400 nm

12.5% Si0 ₂ platelets with a particle thickness of 420 nm

12.5% Si0 ₂ platelets with a particle thickness of 440 nm

12.5% Si0 ₂ platelets with a particle thickness of 460 nm

12.5% Si0 ₂ platelets with a particle thickness of 480 nm

12.5% Si0 ₂ platelets with a particle thickness of 500 nm or

20% Si0 ₂ flakes with a particle thickness of 320 nm 20% Si0 ₂ flakes with a particle thickness of 380 nm 20% Si0 ₂ flakes with a particle thickness of 420 nm

20% Si0 ₂ flakes with a particle thickness of 460 nm, 20% Si0 ₂ flakes with a particle thickness of 500 nm or 5% Si0 ₂ flakes with a particle thickness of 300 nm

10% Si0 ₂ flakes, particle thickness 320 nm 10% Si0 ₂ flakes, particle thickness 340 nm 25% Si0 ₂ flakes, particle thickness 360 nm 25% Si0 ₂ flakes, particle thickness 380 nm 10% Si0 ₂ flakes, particle thickness 400 nm 10% Si0 ₂ platelets with a particle thickness of 420 nm

5% Si0 ₂ platelets with a particle thickness of 440 nm. 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

Band process, Si0 ₂ platelets of uniform thickness can be produced. For the production of the base substrate mixture for the interference pigments according to the invention, the Si0 ₂ platelets of different thicknesses are mixed. In the next step, the S1O ₂ platelet mixture is then covered with at least one high-index layer.

But it is also possible to cover 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.

In a preferred variant, 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.

In this patent application, a high-index layer is understood to mean layers which have a refractive index of n> 1.8.

In this patent application, 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.

Particularly preferred 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,

DE 22 15 191, DE 2244298, DE 23 13331, DE 2522572,

DE 31 37808, DE 31 37809, DE 31 51 343, DE 31 51 354,

DE 31 51 355, DE 32 11 602, DE 3235017 or in others

Patent documents and other publications.

In wet coating, 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. As a rule, the annealing temperatures are between 150 and 1000.degree. C., preferably between 350 and 900.degree. If desired, after the application of individual coatings, 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. Furthermore, 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.

In a further embodiment, 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.

An 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. As soon as the desired layer thickness of the Ti0 ₂ precipitation is reached, 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.

In this application, “layer” or “coating” is understood to mean _{the complete encasing of an Si0 2 platelet.}

The structure of particularly preferred inventive interference pigments is mentioned below, the substrate mixture being a mixture of at least 4 different Si0 ₂ platelets, which differ in particle thickness:

Substrate mixture + T1O2

Substrate mixture + Fe2Ü3

Substrate mixture + FeOOH

Substrate mixture + Fe3Ü4

Substrate mixture + Ti02 / Fe203

Substrate mixture + T1O2 + Fe2Ü3

Substrate mixture + Ti0 ₂ + FeOOH

Substrate mixture + T1O2 + Fe3Ü4

Substrate mixture + T1O2 + S1O2

Substrate mixture + Fe2Ü3 + S1O2

Substrate mixture + FeOOH + Si0 ₂

Substrate mixture + Fe3Ü4 + S1O2

Substrate mixture + T1O2 + S1O2 / AI2O3 Substrate mixture + T1O2 + AI2O3 substrate mixture + Fe2C> 3 + AI2O3 substrate mixture + FeOOH + AI2O3 substrate mixture + Fe3Ü4 + AI2O3 substrate mixture + CT203

Substrate mixture + Sn02 substrate mixture + Si0 ₂ substrate + mixture of Zr0 ₂ substrate + ZnO substrate mixture mixture T1O2 + + + S1O2 T1O2 substrate mixture T1O2 + + AI2O3 + T1O2

Substrate mixture + T1O2 + Mg0 ^* Si02 + T1O2 substrate mixture + T1O2 + Ca0 ^* Si02 + T1O2 substrate mixture + T1O2 + Al203 ^* Si02 + T1O2 substrate mixture + T1O2 + B203 ^* Si02 + T1O2 substrate mixture + Fe2Ü3 + S1O2 + T1O2 + T1O2 substrate mixture + Fe2Ü3 + S1O2

Substrate mixture + Fe203 + S1O2 + Fe2Ü3 substrate mixture + Fe2Ü3 + S1O2 + Sn02 + Fe2Ü3 substrate mixture + Fe2Ü3 + Al2O3 + T1O2 substrate mixture + Fe2Ü3 + Al2O3 + Fe2Ü3 substrate mixture + Fe203 + Mg0 ^* Si02 + T1O2 substrate mixture + Fe203 + Ca0 ^* Si02 + T1O2 substrate mixture + Fe2Ü3 + Al203 ^* Si02 + T1O2 substrate mixture + Fe203 + B203 ^* Si02 + T1O2 substrate mixture + Fe203 + Mg0 ^* Si02 + Fe2Ü3 substrate mixture + Fe2C> 3+ Ca0 ^* Si02 + Fe2Ü3 substrate mixture + Fe203 + Al203 ^* Si02 + Fe2Ü3

Substrate mixture + Fe203 + B203 ^* Si02 + Fe2Ü3 substrate mixture + Ti02 / Fe203 + S1O2 + T1O2 substrate mixture + Ti02 / Fe203 + Al2O3 + T1O2 substrate mixture + Ti02 / Fe203 + Mg0 ^* Si02 + T1O2 substrate mixture + Ti02 / Fe203 + Ca0 ^* Si02 + T1O2 substrate mixture + Ti02 / Fe203 + Al203 ^* Si02 + T1O2

Substrate mixture + Ti02 / Fe203 + B203 ^* Si02 + T1O2 substrate mixture + T1O2 + S1O2 + Ti02 / Fe203 Substrate mixture + Ti02 / Fe203 + S1O2 + Ti02 / Fe203 substrate mixture + Ti02 / Fe203 + Mg0 ^* Si02 + Ti02 / Fe203 substrate mixture + T1O2 + AI2O3 + Ti02 / Fe203 substrate mixture + T1O2 + Mg0 ^* Si02 + Ti02 / Fe203 substrate mixture + Si02 + Ca0 ^* / Fe203

Substrate mixture + T1O2 + Al203 ^* Si02 + Ti02 / Fe203 substrate mixture + T1O2 + B203 ^* Si02 + Ti02 / Fe203 substrate mixture + T1O2 + Al2O3 + Fe2Ü3 substrate mixture + T1O2 + Mg0 ^* Si02 + Fe2Ü3 substrate mixture + T1O2 + Ca0 ^* Si02 + Fe2Ü3 substrate mixture + PO2 + Al203 ^* Si02 + Fe2Ü3

Substrate mixture + T1O2 + B203 ^* Si02 + Fe2Ü3 substrate mixture + Sn02 + PO2 substrate mixture + Sn02 + Fe2Ü3 substrate mixture + Sn0 ₂ + FeOOFI

Substrate mixture + Sn02 + Fe304.

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. Through this

After-coating, 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. To improve the wettability, dispersibility and / or compatibility with the user media, for example, functional coatings made of S1O2 or Al2O3 or Zΐqi or their

Mixtures are applied to the pigment surface. Organic after-coatings are also possible, for example with silanes, such as For example, described in EP 0090259, EP 0634459, WO 99/57204, WO 96/32446, WO 99/57204, US 5,759,255, US 5,571,851, WO 01/92425 or in JJ Ponjee, Philips Technical Review, Vol. 44, No. 3, 81 ff. And PH Harding JC Berg, J. Adhesion Sci. Technol. Vol. 11 No. 4, pp. 471-493. The additionally applied substances only do about

0.1 to 5% by weight, preferably 0.5 to 3.0% by weight of the total pigment.

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.

The 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.

Due to the non-copiable optical effects, 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.

It goes without saying that, for the various purposes of use, 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

Pigments in question.

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

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).

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.

There are no restrictions on the particle shape of the filler. You can meet the requirements according to z. B. platelet-shaped, spherical, needle-shaped, crystalline or amorphous. The use concentration and the mixing ratio of the interference pigments, in particular with organic and inorganic color pigments and dyes, of natural or synthetic origin, such as chromium oxide, ultramarine, spherical SiC - or Ti0 ₂ pigments, are dependent on the application medium and the

Effect to be achieved.

The 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

Lotions, bath gels, soaps, bath salts, toothpaste, hair gels, (volume) mascara, nail varnishes, compact powders, shampoos, loose powders and gels, etc ..

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.

When the interference pigments are mixed with spherical fillers, e.g. B. S1O ₂ , 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

Color flop and interesting gloss effects.

Of course, the interference pigments according to the invention can also be combined in the formulations with any type of cosmetic raw materials and auxiliaries. These include oils, fats, waxes, film formers, surfactants, antioxidants such as vitamin C or vitamin E,

Stabilizers, odor enhancers, silicone oils, emulsifiers, solvents 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. In the case of heterogeneous formulations with discrete aqueous and non-aqueous phases, 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.

There are no limits to the concentrations of the interference pigments according to the invention in the formulation. Depending on the application, they 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%. The cosmetic preparations containing the inventive

In addition, 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

Use of ectoin and ectoin derivatives for the care of aged, dry or irritated dullness should be mentioned. In the European patent application 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. Other forms of application 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.

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,

Contain salts of fatty acid half-esters, fatty acid protein hydrolysates, isothionates, lanolin, fatty alcohol, vegetable oils, plant extracts, glycerine, sugar or mixtures of these substances.

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.

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. It is also advantageous to present 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. In particular, 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.

Further embodiments provide 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.

Solid sticks consist of natural or synthetic waxes and oils, fatty alcohols, fatty acids, fatty acid esters, lanolin and other fatty substances.

If 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. In this case, 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.

Furthermore, 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. By adding natural or nature-identical dyes, organic or inorganic color pigments or coloring natural fruit and plant extracts, cocoa, 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.

Other color pigments can also be added to the flake-form effect pigments, such as E 171, E 172, E 153.

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.

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

Mixtures of active ingredients such as vitamins, enzymes, trace elements, proteins, carbohydrates, essential fats and / or minerals be added, the total amount of active ingredients based on the food or pharmaceutical product should not exceed 25% by weight. 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

Food and pharmaceutical products are applied to the surface after shaping. Here, 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.

It is also possible to apply the pigment mixture according to the invention 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. Before the coating solidifies on the frozen ice, 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.

Accordingly, there is no reduction in gloss / color from coating or application compounds.

The 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.

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, sealants such as shellac, thickeners such as gum arabic, film formers such as cellulose derivatives or starch.

When incorporated into the product matrix itself, 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. When the interference pigment according to the invention is used in powdered products, 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.

Compared to aqueous coating solutions, the alcoholic or alcoholic-aqueous, cellulose-containing application solutions have significant application advantages:

Use of cooler drying air during the spray application. Coloring of heat-sensitive products, such as foods containing vitamins, with the interference pigments according to the invention is very possible.

Products suitable for coloring include coatings on all types of food, in particular pigmented sugar and shellac coatings (alcoholic and aqueous), coatings with oils and waxes, with gum arabic and with types of cellulose (e.g. HPMC = hydroxypropylmethyl cellulose), with starch and protein derivatives, carrageenans and other substances known to those skilled in the art which are suitable for coating. Here, 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,

Sodium carboxymethyl cellulose, a release agent such as lecithin or stearic acid, a gloss enhancer such as maltodextrin and / or dextrose, and the interference pigment according to the invention. 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.

It is also possible to color liquid, edible lacquer systems consisting of food additives and food colors with the interference pigments according to the invention. The pigmented liquid and edible lacquer systems (= decorative lacquer) 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.

If a liquid drink or pasty food is now poured into the pre-decorated glass, it starts depending on what is available

Water content slowly dissolve the decor paint. Here it slowly diffuses into the drink / food. The rate of dissolution of the paint system can be adjusted or modified by choosing the amount of binder in the paint itself. A higher proportion of binder reduces the rate of dissolution. The colored decorative lacquer thus becomes part of the food itself. In addition to the interference pigments according to the invention, further soluble and insoluble, natural and synthetic food dyes or coloring food / fruit and plant extracts can be used in the lacquer system. In particular, E110, E120, E131, E133, E124, E140, E141,

E127, E171, E170, E153, E129, E123, E160, E104, E100, E101, E150, E162, E155, spirulina, carrot, beetroot, aronia, elderberry, spinach and other coloring fruit and plant extracts. It is also possible to add food flavors (natural, artificial or nature-identical). It is also possible to add sweeteners such as cyclamate, saccharine, aspartame, acesulfame K, stevia, etc. or

Combinations of the same are possible.

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. The use of organic solvents such as ethanol or isopropanol (pharmaceutical grade) is also important. The use of ethanol and / or isopropanol in the paint system leads to very rapid drying, especially in connection with an air drying system. The addition of 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,

Licorice, icing, cotton candy, fat, sugar and cream masses, puddings, desserts, cake icing, cold bowls, lemonades and Effervescent beverages, beverages with stabilizing additives, such as. B. carboxymethyl cellulose, acidified and unleavened milk products such. B. Quark, yogurt, cheese, cheese rinds, sausage casings, etc. are suitable.

In the case of sugar-coated or coated food and pharmaceutical products, 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.

Because of their temperature stability, 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. With regard to the selection of 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

Snack products such as potato chips convenience products. With regard to the equipment and apparatus required, all deep-frying and boiling systems known to the person skilled in the art can be used for this application. Only in the case of deep-frying / boiling itself is it necessary to ensure that the interference pigments according to the invention are evenly distributed in the oil / fat during the exposure time. Occasional stirring during the treatment or stirring before the start of deep-frying ensures good pigment distribution. For larger systems, for example, a suitable circulation pump or a stirrer is recommended. Of course, it is also possible to use the fats or oils colored with interference pigments in the pan.

Another large area of application is in the pharmaceutical and OTC area for coloring or as a coating of tablets, gelatine capsules, coated tablets, ointments, cough syrup, etc. In combination with conventional coatings such as polymethacrylates and types of cellulose, e.g. HPMC, 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.

The following examples are intended to explain the invention without, however, limiting it.

Examples

example 1

100 g of a mixture of Si0 ₂ platelets (particle size 5-50 μm) of the composition

12.5% Si0 ₂ platelets with a particle thickness of 360 nm

12.5% Si0 ₂ platelets with a particle thickness of 380 nm

12.5% Si0 ₂ platelets with a particle thickness of 400 nm

12.5% Si0 ₂ platelets with a particle thickness of 420 nm

12.5% Si0 ₂ platelets with a particle thickness of 440 nm

12.5% Si0 ₂ platelets with a particle thickness of 460 nm

12.5% Si0 ₂ platelets with a particle thickness of 480 nm

12.5% Si0 ₂ platelets with a particle thickness of 500 nm

12.5% 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). At a constant pH value, 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%

KOH) is kept constant at 2.2. After the addition has ended, stirring is continued for 10 minutes, and the suspension is filtered off with suction and salt-free with deionized water washed. After drying at 120 ° C., the pigment is calcined at 850 ° C. for 45 minutes. A silver-white interference pigment mixture with a delicate interference rose tone, excellent gloss and pure white body color is obtained.

Example 2

20% Si0 ₂ flakes, particle thickness 320 nm 20% Si0 ₂ flakes, particle thickness 380 nm 20% Si0 ₂ flakes, particle thickness 420 nm 20% Si0 ₂ flakes, particle thickness 460 nm 20% Si0 ₂ flakes, particle thickness 500 nm are heated to 75 ° C. with 2000 ml of deionized water while stirring. By

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

Interference pigment with a delicate flop in the reddish and pure white body color.

Example 3

100 g of a mixture of Si0 ₂ platelets (particle size 5-50 μm) of the composition 5% SiCte flakes with a particle thickness of 300 nm 10% SiCte flakes with a particle thickness of 320 nm 10% SiCte flakes with a particle thickness of 340 nm 25% SiCte flakes with a particle thickness of 360 nm

25% SiCte flakes with a particle thickness of 380 nm 10% SiCte flakes with a particle thickness of 400 nm 10% SiCte flakes with a particle thickness of 420 nm 5% SiCte flakes with a particle thickness of 440 nm are heated to 75 ° C. with 1500 ml of deionized water while stirring . An FeC solution is obtained at 75 ° C. and pH 3.0 with vigorous stirring. (FeCta content: 5.4%) was added dropwise at a rate of 0.5 ml / min. The pH value is kept constant by adding dilute NaOH. After adding 1100 ml, the product is filtered, washed neutral with deionized water, dried and calcined at 800 ° C. for 30 minutes. A subtle copper-gold iridescent interference pigment with an attractive rose-colored powder color is obtained.

Application examples

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.

Between 5 g and 20 g / kg of the mixture prepared above are then applied over the products rotating in the kettle.

After a few minutes, drying air is directed over the products.

Sugar dragees are obtained with an additional silver-white gloss on the surface. Example A2: Products coated with dark chocolate - application with

Gum arabic

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.

Between 5 g and 10 g / kg of the gum arabic solution are then applied to the products rotating in the kettle via the products rotating in the kettle. After a few minutes, drying air is directed over the products.

Chocolate coated tablets with a silver-white sheen on the surface are obtained.

Example A3: Sugar-coated, white chewing gum - film coating

Production of the film coating solution:

5% HPMC film coating powder compound (Biogrund 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.

2-10% interference pigment according to Example 1 is then added to the solution thus produced.

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.

Depending on the desired color effect, 30-80 g / kg of the film coating solution are applied to the chewing gum with the spray gun

White chewing gum is obtained with an additional, white gloss effect on the surface. Example A4: Production of hard candies

The sugar is heated to 100 ° C with the water and then glucose syrup is added. The solution is then heated to 145 ° C. After adding the interference pigment, the color solution and the aroma, the caramel solution is poured into greased molds using a pouring funnel. Finally, let it cool down for two hours. 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.

Yellow, transparent hard caramels are obtained with an additional silver-white gloss effect in the product itself.

Example A5: Manufacture of gelatin articles

First, 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.

Other designs:

The interference pigment according to Example 1 or Example 3 can again be mixed directly with the sugar or introduced with the glucose syrup.

Instead of casting in molds, the traditional technique with negative molds in molding powder can also be used to make gelatin articles.

White fruit gum products are obtained with an additional silver-white gloss effect in the product.

Example A6: Coating of tablets a) Weighing in 1 kg of white tablets d = 8 mm, G = 200 mg

Total application amount: 200 g

This corresponds to 1.2 mg polymer / cm ² tablet surface

Production of the film coating solution:

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.

The spray application is carried out using a common standard coating process.

White tablets with a white glossy film coating on the surface are obtained.

Example A7: Manufacture of tablets: Tablets are colored by means of what is known as film coating

Process. Aqueous application solutions (systems with Film formers, plasticizers, etc.) are sprayed continuously in so-called coaters onto the tablets rotating in them.

Example A7.1

Product to be colored: White tablets Composition of the coating solution: Application quantity: 15-20 g / kg of product

Blue tablets with a white glossy film coating on the surface are obtained.

Example A7.2

Product to be colored: White tablets Composition of the coating solution:

Application rate: 5-10 g / kg of product White tablets with a white glossy film coating on the surface are obtained. Example A7.3

Product to be colored: White tablets Composition of the coating solution:

Application quantity: 5-10 g / kg of product

Silver-colored tablets with a glossy film coating on the surface are obtained

Example A7.4

Product to be colored: White tablets Composition of the coating solution:

Application quantity: 20-25 g / kg of product

The amount of application solution depends on both the desired color effect and the required polymer application.

White tablets with a copper-gold, glossy film coating on the surface are obtained Example A8: Eye shadow Gel Phase A

Phase B -

Phase C. Manufacturing:

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.

Example A9: powder eyeshadow

Phase a

Phase B

Manufacturing:

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.

Suntest:

In order to assess the light stability, half of the press powder is covered during the exposure. The powders are then placed in the Suntest (manufacturer: Hereaus Suntest CPS, xenon lamp with 72 W / m ² ) for 8 hours.

After 8 hours of exposure, no discoloration of the powder can be observed in the sun test. The silver-white pigment is absolutely light-stable.

Example A10: lipstick

Phase a

Phase B

Manufacturing:

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.

Example A11: nail polish

Manufacturing:

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.

Example A12: Volume mascara

Phase a

Phase B:

Phase C. Phase D.

Manufacturing:

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 A13: Soap

Manufacturing:

All ingredients are mixed homogeneously.

Example A14: Ice cream on a stick coated with dark chocolate

(1) Fat coating: 99.97% fat compound (vegetable fat, sugar, lecithin, aroma) Kerry GmbH

0.03% biochar (E153) Roha Ltd.

(2) Interference pigment according to Example 1

Briefly immerse the ice cream product (approx. Upper third to middle) in the pre-colored and heated fat coating (1). After pulling out and briefly dripping off the excess fat, the interference pigment is evenly applied or atomized to the still liquid ice cream surface by means of a pneumatic powder atomizer.

Here, 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

(1) fat coating:

99.97% fat compound (vegetable fat, sugar, lecithin, aroma) Kerry GmbH 0.03% carmine color lacquer 52% (E120) Fiorio Colori

(2) Interference pigment according to Example 1

Briefly dipping the ice cream product (approx. Upper third to middle) into the pre-colored and heated fat coating (1) After pulling out and briefly dripping off the excess fat, the interference pigment is evenly applied or atomized to the still liquid ice cream surface by means of a pneumatic powder atomizer. Here, 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 A16: Muffin with coating (dark cocoa icing)

(1) Covered with dark cocoa fat glaze

(2) Direct application of the interference pigment analogous to Example A15 before the fat glaze solidifies. A very even application is achieved using a pneumatic process.

Example A17: Fixing interference pigments on food surfaces by means of gum arabic solution a) Gum arabic solution

10% gum arabic (Roeper GmbH)

15% ethanol (96% by volume, Merck GmbH)

75% water

Application on sugar coated tablets: 1%

Subsequent pigment addition: 2% (interference pigment according to Example A15) b) Gum arabic solution 10% gum arabic (Roeper GmbH)

15% ethanol (96% by volume, Merck GmbH)

75% water Application on chocolate dragees: 0.8%

Subsequent pigment addition: 1.8% (interference pigment according to Example 3) c) gum arabic solution

12% gum arabic (Roeper GmbH)

14% ethanol (96 vol. 1%, Merck GmbH)

74% water Application on chocolate-coated cereal-sugar-coated tablets: 1, 2%

Subsequent pigment addition: 2.1% (interference pigment according to Example 3) d) gum arabic solution

10% gum arabic (Roeper GmbH) 15% ethanol (96vol%, Merck GmbH)

8% interference pigment according to Example 1, 68% water

Spray application on chocolate bars using an airbrush

Example A18 Fatty coating on ice cream

Example A18.1

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%

All components are mixed in the melted fat. Example A18.2

Fat Compound 264-04-04 86% (Kerry) (vegetable fat, sugar, lecthin flavor)

Interference pigment according to 8% example 1

Cocoa (powder, high fat) 6% (Stollwerck GmbH) 100%

All components are mixed in the melted fat.

Example A18.3

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 %

All components are mixed in the melted fat.

Example A18.4

Fat Compound 264-04-04 83.6% (Kerry) (vegetable fat, sugar, lecthin flavor) Interference pigment according to 8% Example 1 b-carotene 32107 2% (Wild GmbH) Paprika - oil-soluble color 0.4% (Wild GmbH) extract 32102 Cocoa (powder, high fat) 6% (Stollwerck GmbH) 100%

All components are mixed in the melted fat. Example A18.5

Fat Compound 264-04-04 86% (Kerry) (vegetable fat, sugar, lecthin flavor)

Interference pigment according to 8% Example 3 b-carotene 32107 1% (Wild GmbH) Cocoa (powder, high fat) 5% (Stollwerck GmbH) 100%

All components are mixed in the melted fat.

Example A19: Decoration of baked goods with a fatty one

coating

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%

All components are mixed in the melted fat. Example A20: Decoration of chocolates with a fatty one

coating Fat Compound 264-04-04 90% (Jancke GmbH)

(Vegetable fat, sugar,

Lecthin flavor)

Interference pigment according to 8%

example 1

Cocoa (powder, low fat) 2% (Barry Callebaut)

100%

All components are mixed in the melted fat.

Example A21: Edible gloss varnish

Example A21.1: Golden decorative film in vodka liqueur, white, transparent lacquer base (A):

45% ethanol (96% vol.) (Merck KGaA)

48.3% water

6% hydroxypropylmethyl cellulose, low viscosity (A&Z Chemicals)

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. Well can

0.1% silicon dioxide (Aerosil ^® 200F, Evonik GmbH) can be added to the solution

0.4% sweetener solution (aspartame, acesulfame K)

0.2% vanilla flavor (Döhler GmbH)

85% paint base (A)

15% interference pigment according to Example 3 Application:

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 .2: Strawberry sparkling wine + red-gold effect

Paint base (B):

45% ethanol (96% vol.) (Merck KGaA)

48.9% water

6% hydroxypropylmethyl cellulose, low viscosity (A&Z Chemicals)

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. Now 0.1% strawberry flavor (Döhler GmbH)

88% lacquer base (B)

12% interference pigment according to Example 3 Use:

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

Paint base (C):

45% ethanol (96% vol.) (Merck KGaA)

51% water

4% hydroxypropylmethyl cellulose, low viscosity (A&Z Chemicals) The cellulose is slowly added to the water-ethanol mixture while stirring (magnetic or propeller stirrer)

90% lacquer base (C)

10% interference pigment according to Example 1

Application: 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)

54.4% water

5% hydroxypropylmethyl cellulose, low viscosity (A&Z Chemicals)

After a few minutes, the cellulose has dissolved so far. Now 0.1% silicon dioxide (Aerosil 200F, Evonik GmbH) can be added to the solution.

0.2% sweetener solution (Aspertame, Acesulfame K)

0.3% caramel flavor (Döhler GmbH)

85% paint base (D)

15% interference pigment according to Example 3 Application:

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

Paint base (E):

45% ethanol (96% vol.) (Merck KGaA)

49.6% water

5% hydroxypropylmethyl cellulose, low viscosity (A&Z Chemicals) 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. Now 0.1% silicon dioxide (Aerosil 200F, Evonik GmbH) can be added to the solution

0.3% stevia (Wild GmbH)

86% paint base (E)

14% interference pigment according to Example 3 Use:

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

Paint base (F):

45% ethanol (96% vol.) (Merck KGaA)

49.76% water

5% hydroxypropylmethyl cellulose, low viscosity (A&Z Chemicals)

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)

0.2% raspberry flavor (Döhler GmbH)

85% paint base (F)

15% interference pigment according to Example 1 Application:

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

Example A22.1:

Biskin frying fat (palm fat-based)

+ 5% interference pigment according to example 1 Used in deep fryer for:

Country Fries (MC Cain) Fry Fries (Yes)

Potato Wedges (McCain)

Potato Pancakes (McCain)

Example A22.2:

Palmetta (palm fat-based) (Walter Rau GmbHFI) + 10% interference pigment according to Example 1 Used in deep fryer for:

Fish fingers, breaded (Käpitain Igloo)

Schnitzel, breaded (yes)

Example A22.3:

Flürin (based on rapeseed oil) (Walter Rau GmbHFI) + 6% interference pigment according to Example 1 Used in deep fryer for:

Potato Chips

Example A22.4:

Flürin (based on rapeseed oil) (Walter Rau GmbHFI) + 6% interference pigment according to Example 3 Used in deep fryer for: Potato Chips

Mini donuts

Kreppei example A22.5:

Sonin (based on sunflower oil) (Walter Rau GmbH)

+ 12% interference pigment according to example 3 Used in deep fryer for:

Spring rolls (yes)

Example A22.6:

Sonin (based on sunflower oil) (Walter Rau GmbH)

+ 5% interference pigment according to example 2 used in deep fryer for: potato wedges (McCain)

Example A22.7:

olive oil

+ 8% interference pigment according to example 1 used for searing breaded schnitzel, vegetarian and vegan meat substitute products (e.g. breaded soy schnitzel or breaded soy medallions) and fish fingers. Example A23: Gloss varnish for use in food

Example A23.1: Decoration of chocolate foam kisses Production of the basic lacquer system:

45% ethanol (96% vol.) Merck KGaA 48.5% water

6% hydroxypropyl methyl cellulose, low viscosity A&Z Chemicals The cellulose slowly turns into a water-ethanol mixture with stirring

(Magnetic or propeller stirrer) added. After a few minutes, the cellulose has dissolved so far. Well can

0.15% sunflower lecithin Stern Chemie GmbH

0.35% silicon dioxide Aerosil 200F, Evonik GmbH can be added to the solution.

Product to be decorated: Chocolate foam kisses (Dickmann)

85% basic paint system (see above)

15% interference pigment according to Example 1

Application:

Chocolate foam kisses can be dipped, painted or coated.

Example A23.2: Decoration of chocolate foam kisses

Product to be decorated: Chocolate foam kisses 90% basic lacquer system (see example A23.1)

10% interference pigment according to example 2

Application:

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)

12% interference pigment according to Example 2 Use: partial coating

Example A23.4: Product to be decorated: Lady biscuits 85% basic lacquer system (see example A23.1)

15% interference pigment according to Example 3 dye E120 qs Application: partial coating

Example A23.5: Product to be decorated: baked goods (muffins)

85% basic paint system (see example A23.1)

15% interference pigment according to Example 1 Use: dipping

Example A23.6: Product to be decorated: Sponge cake (from Wikinger) (marzipan / cocoa glaze)

85% basic paint system (see example A23.1)

15% interference pigment according to Example 1 Use: partial dipping

Example A23.7: Product to be decorated: fruit gums, apple pieces, raisins, strawberries

85% basic paint system (see example A23.1)

15% interference pigment according to Example 3 dye E131 q.s.

Application: immersion

Example A23.8: Product to be decorated: Meringue (foam biscuits made from sugared egg whites)

85% base lacquer system (see example A23.1) 15% interference pigment according to example 1

Vanilla Aroma (Döhler GmbH) q.s.

Application: dipping and / or painting the meringue

Example A23.9: Product to be decorated: marshmallows

85% base lacquer system (see example A23.1) 15% interference pigment according to example 1 Aspertam qs Application: coating

Example A23.10: Product to be decorated: salted pretzel

85% basic paint system (see example A23.1)

15% interference pigment according to Example 1 Dye Spirulina (GNT) q.s.

Application: dipping or immersion

Example A23.11: Product to be decorated: ice cream cones

85% basic paint system (see example A23.1)

15% interference pigment according to Example 2 Dye: E153 suspension (CHR Hansen) q.s. Application: dipping or painting

Example A23.12: Product to be decorated: liquorice thaler

90% basic paint system (see example A23.1)

10% interference pigment according to Example 1 dye E129 q.s.

Application: hand application in the rotating tablet pan, then

Supply of drying air

Add 0.5 - 5%, depending on the desired effect

Example A23.13: Product to be decorated: chocolate dragees

(Hazelnuts + dark chocolate (Weseke), glossy

90% basic paint system (see example A23.1)

10% interference pigment according to Example 3

Application: Hand application in a rotating tablet pan, subsequent supply of drying air, addition of 0.5 - 8%, depending on the desired effect

Example A23.14: Spray application (airbrush) 85% basic paint system (see example A22.1)

15% interference pigment according to example 2

Another 50% water is added to this mixture: 100 g mixture + 50 g water suspension can now be sprayed.

Product to be decorated: Sugar-coated, white almonds (FDF GmbH)

Example A23.15: Spray application (airbrush or in a coated tablet): Production of the basic paint system:

86% ethanol

4% hydroxypropyl methycellulose 10% water

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.

90% basic paint system

10% interference pigment according to Example 1

Product to be decorated: Sugar-coated, white almonds (FDF GmbH)

Application: hand application in the rotating tablet pan, then

Supply of drying air

Add 0.5 - 5%, depending on the desired effect

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]:

3% HPMC - hydroxypropylmethyl cellulose (A&Z Chemicals, Roeper GmbH) 0.5% methyl cellulose (Merck KGaA) 45% ethanol (96% by volume, food grade)

51.5% water

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.

The 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.

90% base solution paint (without dye) [A] + 10% interference pigment according to Example 2

Covering chocolate foam kisses or dipping chocolate bars b)

92% base solution - lacquer (without dye) [A] +

8% interference pigment according to Example 1

Covering chocolate foam kisses or dipping gingerbread cookies covered with dark chocolate c)

88% base solution lacquer (without dye) [A] + 12% interference pigment according to Example 1

Covering chocolates d)

90% base solution - lacquer (without dye) [A] +

10% interference pigment according to Example 3 Coating of pralines, dipping of chocolate bars (fat glaze) e) 94% base solution - lacquer (without dye) [A] +

6% interference pigment according to Example 1 Coating of pralines and chocolate foam kisses

Dipping chocolate printen

93.6% base solution lacquer (without dye) [A] + 6% interference pigment according to Example 1 +

0.4% E153 (Roha) g)

Covering chocolates

90.98% base solution lacquer (without dye) [A] +

9% interference pigment according to Example 1+

0.02% E129 (Pharmorgana GmbH) _h )

Dipping chocolate foam kisses

92% base solution - lacquer (without dye) [A] +

8% interference pigment according to Example 3+

0.1% Spirulina Blue (CHR Hansen) i)

Covering chocolates

85% base solution - lacquer (without dye) [A] +

15% interference pigment according to Example 1 i)

Dipping marzipan

80% base solution - lacquer (without dye) [A] +

20% interference pigment according to Example 1 k) Decoration of glasses (interior decoration)

80% base solution - lacquer (without dye) [A] +

20% interference pigment according to Example 1 I)

Dipping chocolate pods

86% base solution lacquer (without dye) [A] + 14% interference pigment according to Example 1

Example A25: Coloring wafers Recipe and manufacturing process for all examples:

Composition:

10 kg of wheat flour (type 405), 17 l of water (15 ° C.), interference pigments and other components as indicated in the examples; Percentages are% by weight and relate to the total mass of the dough. Mixing: 15 min in a planetary mixer

Bake: 1 - 3 minutes on 200/220. ° C in plate wafers

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

With the addition of 2% interference pigment according to Example A25.1, the interference color is visible; very nice gloss at 4% and 6%.

Increasing the pigment concentration to 8% results in only a slight improvement in the effect; slightly glittering effect.

Example A25.5: 5% interference pigment according to Example 1 + 0.03% biochar E153

Through the combination with the black pigment E153 (biochar E153 from Fiorio Colori SA) different

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)

The color intensity of the beetroot concentrate after the baking process is reduced; slight brown cast; no effect on interference color and

Shine visible.

Example A25.8: 5% interference pigment according to Example 1 + 0.8% aroma (Symrise GmbH) + 0.5% sweetener aspartame

(Worlee GmbH)

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.

Example A26: Coloring hard-boiled eggs

Application medium:

80 wt% water

5.75 wt% 1,2 propanediol E1520 Merck KGaA

2.4% by weight of Roeper sodium carboxymethyl cellulose

1.5% by weight of soy or sunflower lecithin Sternchemie

0.3% by weight citric acid (crystalline) Merck KGaA

0.05% by weight potassium sorbate Merck KGaA

10% by weight interference pigment according to Example 2

Production of the application medium: Water is added with potassium sorbate and citric acid, stirred with a paddle stirrer and the mixture is heated to a maximum of 80 ° C. While heating, sodium carboxymethyl cellulose is added with constant stirring. The mixture is stirred (approx. 45 min.) Until all of the cellulose has dissolved. Alternatively, the mixture can be stirred for 3 h without supply of heat.

As soon as all of the sodium carboxymethyl cellulose has dissolved in the water, 1,2-propanediol and lecithin are added at room temperature and the mixture is stirred until all the ingredients are evenly distributed. The specified amount of pigment is then stirred in.

Coloring:

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

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.

Deviating pigment amounts of 2-17% by weight lead to different intensities of the resulting gloss effect.

There is no color penetration through the eggshell.

Example A27: Coloring chocolate and pralines Finished pralines, chocolates and chocolate-coated products im

In general, the interference pigment application medium can be used to decorate or decorate afterwards. Application medium:

60 wt% water

20% by weight ethanol (96% by volume) Merck KGaA

5.75% by weight 1,2-propanediol E1520 Merck KGaA

2.4% by weight of Roeper sodium carboxymethyl cellulose

1.5% by weight soy or sunflower lecithin Sternchemie 0.3% by weight citric acid (crystalline) Merck KGaA

0.05% by weight potassium sorbate Merck KGaA

10% by weight interference pigment according to Example 1 + optional sweetener and / or flavors of your choice

Production of the application medium as in example A26.

Coloring:

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

10.75 wt% 1,2 propanediol E1520 Merck KGaA

2.4% by weight of Roeper sodium carboxymethyl cellulose

0.05% by weight of potassium sorbate Merck KGaA + interference pigment according to Example 2 Merck KGaA

Production of the application medium: The components are mixed as described in Example A26. Before adding the interference pigment, a further 50% by weight of water are added and stirring is continued until everything has been homogeneously distributed. 5% by weight of interference pigment are added to this mixture according to

Example 2 added.

Coloring:

Chocolate molds made of plastic (e.g. polycarbonate) or metal can be pre-decorated very easily using the application medium according to the invention. Here the pigment-containing

Application medium given in the form on the desired places. Then the form is dried in a convection oven or drying cabinet. The shape can be colored using suitable nozzles, pipettes, brushes or by hand.

Optionally, 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.

Example A28.1:

It is also possible to evenly color chocolate products by hand analogous to example A26.

Example A29: Decoration of marzipan or fondant items

Analogously to the decoration of chocolate and pralines (example A27), other confectionery such as marzipan or fondant articles can be decorated or decorated with the application medium according to the invention. In contrast to chocolate and pralines, these products can be dried at higher temperatures after application. Otherwise, the recipe variations, manufacturing processes and

Color options as described in Example A27.

Example A30: Decoration, coloring of cereals Application medium (base):

70 wt% water

23% by weight ethanol (96% by volume) Merck KGaA

3.5% by weight 1,2 propanediol E1520 Merck KGaA 2.0% by weight sodium carboxymethyl cellulose Roeper 1, 2% by weight soy or sunflower lecithin Sternchemie 0.25% by weight citric acid (crystalline) Merck KGaA

0.05% by weight potassium sorbate Merck KGaA

Optional sweeteners & flavors of your choice Depending on the desired gloss and color effect, 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)

Cereal weight: 40 g

Application medium: 10% by weight interference pigment according to Example 1

0.05% by weight of CHR Hansen biochar

89.95% by weight application medium (base) Gradually, a total of 60 g (= 15% of the cereal amount) of application medium are applied to the cereals rotating in the kettle. Here, 10 g of the application medium / order are applied. This is distributed over the cereals. Drying air is directed onto the cereals. As soon as an application has dried, a corresponding application amount can be applied again to the cereals until the desired color effect is achieved. The cereals are then dried, for example in a drying cabinet or oven, until the initial humidity is reached again.

Example A30.2: Chocolate cereals, round, extruded

Proceed as in example A30.1.

Cereal weight: 400 g

Application medium:

8% by weight interference pigment according to Example 3 92% by weight application medium (base)

Application quantity: 50 g (= 12.5%)

Example A30.3: Grain cereals, oblong, extruded

Proceed as in example A29.1. Cereal weight: 500 g

Application medium:

12% interference pigment according to Example 1 88% application medium (base)

Application quantity: 40 g (= 8%) Example A30.4: Coloring, decoration of popcorn Example A30.4a: Popcorn, sugared weight of popcorn: 300 g

Application medium:

8% by weight interference pigment according to Example 2 92% by weight application medium (base) Application amount: 50 g (= 16.67%)

A total of 50 g (= 16.67%) of the application medium are gradually applied to the popcorn rotating in a kettle. Here 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

Weight of popcorn: 300 g

Application medium:

10% by weight interference pigment according to Example 1 90% by weight application medium (base)

Application quantity: 60 g (= 20%)

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. Here, too, 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.

Application medium (base):

70% by weight water 23% by weight ethanol (96% by volume) Merck KGaA

3.5% by weight 1,2-propanediol E1520 Merck KGaA 2.0% by weight sodium carboxymethyl cellulose Roeper 1.2% by weight soy or sunflower lecithin Sternchemie 0.25% by weight citric acid (crystalline) Merck KGaA

0.05% by weight potassium sorbate Merck KGaA

Optional addition of sweeteners and flavors. The 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)

Dragee weight: 1,000 g Application medium:

10% by weight pigment according to Example 2

90% by weight application medium base (composition as in example A31, production as in example A30.1)

Application quantity: 80 g (= 8%)

Example A31.2: Chocolate coffee beans coated with milk chocolate

Production as in example A30 Dragee weight: 1,200 g Application medium:

10% by weight interference pigment according to Example 2 90% by weight application medium (base)

Application quantity: 95 g (= 7.9%)

Example A31.3: Raisins coated with white chocolate Production as in example A30

Weight of coated tablet: 1,000 g

Application medium: 8% by weight interference pigment according to Example 2

92% by weight application medium (base)

Application quantity: 60 g (= 6%)

Example 31.4: Sugar-coated chocolate buttons, white

Weight of coated tablet: 1,000 g

Application medium:

8% by weight interference pigment according to Example 3 92% by weight application medium (base) Application amount: 100 g (= 10%)

Example 31.5: Isomalt-coated chewing gum pads, white

Dragee weight: 1,000 g Application medium:

8% by weight interference pigment according to Example 3 92% by weight application medium (base) Application quantity: 80 g (= 8%)

Example 31.6: Sugar-coated almonds, copper-red

Dragee weight: 800 g Application medium:

Application quantity: 72 g (= 9%)

Example A31.7: Further surface optimization of coated tablets

Both with chocolate-coated products (examples A31.1-A31.3) and with sugar-free or sugar-free sugar-coated products (examples

A31.4 - A31.6) 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.

Example A31 7a:

Composition:

90% by weight ethanolic shellac ^{solution (2-50% shellac content) (e.g. Capol ®} 425 or Crystallac ^® (from Mantrose-Haeuser Co., Inc.)

10% by weight interference pigment according to Example 1

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)

Application amount: 5 - 40 g / kg product - depending on the dilution, amount of interference pigment (according to Example 1) in the shellac solution (2-50

% Shellac content) + 1 - 40% pigment; preferably: 5 - 25% pigment

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.

Application medium (base):

72% by weight water 20% by weight ethanol (96% by volume) Merck KGaA

4.5% by weight 1,2-propanediol E1520 Merck KGaA 2.0% by weight sodium carboxymethyl cellulose Roeper 1.2% by weight soy or sunflower lecithin Sternchemie 0.25% by weight citric acid (crystalline) Merck KGaA

0.05% by weight potassium sorbate Merck KGaA

To adjust the recipe, 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

92% by weight application medium (base) Application quantity: 40 g (= 8%)

Example A32.2: Lemon Compress, yellow-copper red Product weight: 500 g

Application medium:

6% by weight interference pigment according to Example 3 94% by weight application medium (base) Application amount: 50 g (= 10%)

Example A33: coloring, decoration of marshmallows

The application takes place in a coating pan.

The process sequence is as described in example A31.

Example A33.1: Coloring marshmallows, white

Application medium (base):

72% by weight water 20% by weight ethanol (96% by volume) Merck KGaA

0.05% by weight potassium sorbate Merck KGaA

Product weight: 300 g Application medium:

10% by weight interference pigment according to Example 3 90% by weight application medium (base)

Application quantity: 51 g (= 17%) Example A33.2: Coloring of marshmallows, light green

Product weight: 300 g

Application medium:

Application quantity: 51 g (= 17%)

Example A33.3 Coloring marshmallows, pink

Product weight: 300 g

Application medium: 8% by weight interference pigment according to Example 3

92% by weight application medium (base)

Application quantity: 42 g (= 14%)

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.

It is also possible to use the decors produced as edible body decorations. Here, the decorations are applied to the corresponding parts of the body using suitable adhesives. Furthermore, 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

9.75% by weight 1,2-propanediol E1520 Merck KGaA

2.4% by weight of Roeper sodium carboxymethyl cellulose

0.05% by weight potassium sorbate Merck KGaA

10% by weight interference pigment according to Example 1

To adjust the recipe, 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.

After production, the application medium is spread thinly in silicone molds and dried at approx. 70 ° C in a drying cabinet for 2 - 3 hours. The decors can then be carefully removed from the mold. Example A34.2: Recipe for decor sheets

80% by weight water 5.75% by weight 1,2 propanediol E1520 Merck KGaA

2.4% by weight of Roeper sodium carboxymethyl cellulose

1.5% by weight soy or sunflower lecithin Sternchemie 0.3% by weight citric acid (crystalline) Merck KGaA 0.05% by weight potassium sorbate Merck KGaA

10% by weight interference pigment according to Example 3 To adapt the recipe, 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.

After production, 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.

Example A35: Colored decorative elements

Base material for 3D shapes:

88.25% by weight water (A)

0.05% by weight potassium sorbate (Merck KGaA) (A)

0.5% by weight citric acid (crystalline) (Merck KGaA) (A)

2.4% by weight carboxymethyl cellulose (Roeper GmbH) (B)

7% by weight 1,2-propanediol (Merck KGaA) (B)

0.75% by weight sunflower lecithin (SternChemie GmbH

& Co. KG) (B) Aroma (as required)

Sweetener (as required)

Buffer salts to adjust the pH (as required) Add flavor, sweetener, buffer salts up to 100%, balance over

Increase or reduce the addition of water

All ingredients (A) are mixed with stirring. Then mix the ingredients (B) and add them to A with vigorous stirring and stir after 15-30 min. Due to the rapid increase in viscosity, the speed of the stirrer must be adjusted to ensure good mixing.

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.

Example A35.1: Colored base materials for 3-D shapes

Example A35.1a

90% by weight base material for 3D shapes

10% by weight interference pigment according to Example 3, Example A35.1b

89.7% by weight base material for 3D shapes 10% by weight interference pigment according to Example 3 0.3% by weight biochar E153 (Roha Europe S.L.U.)

Example A35.1c

89% by weight base material for 3D shapes 10% by weight interference pigment according to Example 3 1% by weight beetroot concentrate E160 (Chr. Hansen A / S)

Example A35.1d 88.96% by weight base material for 3D shapes

10% by weight interference pigment according to Example 3

0.04 wt% E124 (Roha Europe S.L.U.) Example A35.1e

91, 94% by weight base material for 3D shapes 8% by weight interference pigment according to Example 3 0.06% by weight E120 (Fiorio Colori SpA)

Example A35.1f 91% by weight base material for 3D shapes

8% by weight interference pigment according to Example 3 1% by weight E171 (Merck KGaA)

Example A35.1q

92% by weight base material for 3D shapes, 7% by weight interference pigment according to Example 3

1% by weight red-coloring plant extract (Rudolf Wild GmbHFI & Co. KG)

Example A35.1h

89.5% by weight base material for 3D shapes

10% by weight interference pigment according to Example 3 0.5% by weight biochar E153 (Roha Europe S.L.U.)

Example A35.1 i

94% by weight base for 3-D shapes, 6% by weight interference pigment according to Example 2

Example A35.1i

99.7% by weight base material for 3D forms 0.3% by weight E110 (Roha Europe SLU) Example A35.1k 99.7% by weight base for 3D shapes 0.3% by weight E129 (Roha Europe SLU) 0.2% by weight E131 (Roha Europe SLU)

Example A35.11

91% by weight base material for 3D shapes, 9% by weight interference pigment according to Example 1

Example A35.1 m

93% by weight base material for 3D shapes, 7% by weight interference pigment according to Example 3

Example A35.1 n

93% by weight base material for 3D shapes 6% by weight interference pigment according to Example 3 1% by weight silicon dioxide (Aerosil) (Evonik Industries)

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:

Base material for foils or surface decoration:

10% by weight ethanol (96%; “food grade”) (Merck KGaA) (A) 84.95% by weight water (A) 0.05% by weight potassium sorbate Merck KGaA (A) Citric acid (as required) Merck KGaA (A)

1.5% by weight carboxymethyl cellulose Roeper GmbH (B)

3% by weight of 1,2 propanediol Merck KGaA (B)

0.5% by weight sunflower lecithin SternChemie GmbH & Co. KG (B)

Aroma (as required)

Sweetener (as required)

Increase or reduce the addition of water

Example A36.2

Alternative formulation without addition of ethanol 94.55% by weight water (A) 0.05% by weight potassium sorbate Merck KGaA (A) Citric acid (as required) Merck KGaA (A)

1.8% by weight carboxymethyl cellulose Roeper GmbH (B)

3% by weight of 1,2 propanediol Merck KGaA (B)

0.5% by weight sunflower lecithin SternChemie GmbH & Co. KG (B)

Aroma (as required)

Sweetener (as required)

Increase or reduce the addition of water

All ingredients (A) are mixed with stirring. Then mix the ingredients (B) and add them to (A) with vigorous stirring. Flavors and sweeteners can also be added after mixing (A) and (B). The pH value is then adjusted to approx. 3.5 with citric acid or buffer salts. The interference pigment according to Examples 1 to 3 is then stirred into the basic mass individually or in combination. Example A36.3: Production of the 3D elements

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

Heat conduction less suitable. 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.

This results in tensions within the mass, which lead to deformations and thus to uneven drying of the basic mass in the mold. Irregular surface deformations are the result.

Air inclusions can also no longer escape upwards and lead to imperfections during drying. Low humidity values support the drying process positively.

For this reason, 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. Has 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.

Once the drying process has ended, the finished 3D shapes can easily be removed by hand or they will fall out of the shapes by themselves. Similarly, chocolate can also be filled into the molds, for example. After cooling, the now decorated chocolate can be removed from the mold.

The more base material is filled in, the longer the drying time.

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.

Here, the 3D compound is applied thinly to the areas of the product to be colored. After appropriate drying (see A36.3), decorated surfaces are obtained in which the mass adapts exactly to the structure of the product surface. In addition to chocolate, 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

Procedure for examples A37.1 - A37.11:

The amounts of instant soup and interference pigment stated in the table are mixed by shaking and the mixtures produced are stirred into the amounts of boiling water stated in the examples. Then cook for another 5 minutes. After cooking, the soup is both in the liquid phase, as well as on the ingredients, such as the pasta, the added interference pigment clearly recognizable.

Example A38: Vegan spread

640 g smoked tofu *

150 g kidney beans (can, drained) *

150 g sunflower or rapeseed oil *

30 g fried onions *

5 g paprika powder, smoked *

Spices: marjoram, oregano *

Salt pepper*

10-20 g interference pigment according to Example 3 (1-2%), depending on the desired color

All * ingredients are finely ground to a pulp using a Turrax / hand blender.

Then 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.

Due to the very good heat stability of the interference pigments, there is no loss of color

Claims

1. Interference pigment based on a substrate mixture, characterized in that the substrate _{mixture consists of Si0 2} platelets which have at least 4 different layer thicknesses and the Si0 ₂ platelets are coated with at least one high-index layer.

2. Interference pigment according to claim 1, characterized in that the Si0 ₂ platelets 4, 5, 6, 7 or 8 have different layer thicknesses.

3. Interference pigment according to claim 1 or 2, characterized in that the Si0 ₂ platelets differ in the layer thicknesses by at least 10 nm in each case.

4. interference pigment according to one or more of claims 1 to

3, characterized in that the layer thicknesses of the S1O2 platelets are selected from the range of 100 - 1000 nm.

5. interference pigment according to one or more of claims 1 to

4, characterized in that the substrate mixture contains _{at least 4 Si0 2} platelets from the following group of Si0 _{2 platelets:}

Si0 ₂ flakes with a layer thickness of 360 nm Si0 ₂ flakes with a layer thickness of 380 nm Si0 ₂ flakes with a layer thickness of 400 nm Si0 ₂ flakes with a layer thickness of 420 nm Si0 ₂ flakes with a layer thickness of 440 nm Si0 ₂ platelets with a layer thickness of 460 nm Si0 ₂ platelets with a layer thickness of 480 nm Si0 ₂ platelets with a layer thickness of 500 nm or Si0 ₂ flakes with a layer thickness of 360 nm Si0 ₂ flakes with a layer thickness of 380 nm Si0 ₂ flakes with a layer thickness of 400 nm Si0 ₂ flakes with a layer thickness of 420 nm Si0 ₂ flakes with a layer thickness of 440 nm

Si0 ₂ flakes with a layer thickness of 460 nm, Si0 ₂ flakes with a layer thickness of 480 nm or Si0 ₂ flakes with a layer thickness of 300 nm

Si0 ₂ platelets with a layer thickness of 320 nm Si0 ₂ platelets with a layer thickness of 340 nm Si0 ₂ platelets with a layer thickness of 360 nm Si0 ₂ platelets with a layer thickness of 380 nm Si0 ₂ platelets with a layer thickness of 400 nm Si0 ₂ platelets with a layer thickness of 420 nm

Si0 ₂ platelets with a layer thickness of 440 nm or

Si0 ₂ platelets with a layer thickness of 300 nm

Si0 ₂ flakes with a layer thickness of 310 nm Si0 ₂ flakes with a layer thickness of 340 nm Si0 ₂ flakes with a layer thickness of 350 nm Si0 ₂ flakes with a layer thickness of 370 nm Si0 ₂ flakes with a layer thickness of 380 nm or

Si0 ₂ flakes with a layer thickness of 400 nm Si0 ₂ flakes with a layer thickness of 420 nm Si0 ₂ flakes with a layer thickness of 440 nm Si0 ₂ flakes with a layer thickness of 460 nm

Si0 ₂ platelets with a layer thickness of 480 nm Si0 ₂ platelets with a layer thickness of 500 nm Si0 ₂ platelets with a layer thickness of 520 nm.

6. interference pigment according to one or more of claims 1 to 5, characterized in that the substrate mixture consists _{of the following Si0 2 flakes:}

Si0 ₂ flakes with a layer thickness of 360 nm Si0 ₂ flakes with a layer thickness of 380 nm Si0 ₂ flakes with a layer thickness of 400 nm Si0 ₂ flakes with a layer thickness of 420 nm Si0 ₂ flakes with a layer thickness of 440 nm

Si0 ₂ flakes with a layer thickness of 460 nm Si0 ₂ flakes with a layer thickness of 480 nm Si0 ₂ flakes with a layer thickness of 500 nm.

7. interference pigment according to one or more of claims 1 to

6, characterized in that the substrate mixture is coated with at least one high-index layer with a refractive index of n> 1.8.

8. interference pigment according to one or more of claims 1 to

7, characterized in that the high-index layer is selected from metal oxides, BiOCI, metal hydroxides, metals, metal sulfides or mixtures thereof.

9. Interference pigment according to one or more of claims 1 to 8, characterized in that the high-index layer is selected from the group T1O2, Fe203, FeOOH, FesC, Zr02, Sn0 ₂ , ZnO and / or BiOCI or mixtures thereof.

10. Interference pigment according to one or more of claims 1 to 9, characterized in that the platelets are coated with T1O2, Fe ₂ 03, FeOOFI, Fe ₃ 0 ₄ or from mixtures of the metal oxides mentioned.

11. interference pigment according to one or more of claims 1 to

10, characterized in that the SiCte platelets are coated with at least one high-index layer and at least one low-index layer.

12. Interference pigment according to one or more of claims 1 to

11, characterized in that the substrate mixture of Si0 ₂ platelets is coated alternately with at least one high-index layer and at least one low-index layer.

13. Interference pigment according to one or more of claims 1 to

12, characterized in that the low refractive index layer is selected from the group S1O2, MgO, Mg0 ^* Si0 ₂ ,

14. Interference pigment according to one or more of claims 1 to 13, characterized in that the Si0 ₂ flakes have an occupancy from the surface selected from the following group:

Substrate mixture + T1O2

Substrate mixture + Fe203

Substrate mixture + FeOOH

Substrate mixture + Fe3Ü4

Substrate mixture + Ti02 / Fe203

Substrate mixture + T1O2 + Fe2Ü3

Substrate mixture + Ti0 ₂ + FeOOH

Substrate mixture + T1O2 + Fe3Ü4

Substrate mixture + T1O2 + S1O2

Substrate mixture + Fe2Ü3 + S1O2

Substrate mixture + FeOOH + Si0 ₂

Substrate mixture + Fe3Ü4 + S1O2

Substrate mixture + T1O2 + S1O2 / AI2O3

Substrate mixture + T1O2 + AI2O3

Substrate mixture + Fe2Ü3 + AI2O3

Substrate mixture + FeOOH + Al ₂ O3 Substrate mixture + Fe3C> 4 + AI2O3 substrate mixture + CT203 substrate mixture + Sn02 substrate mixture + Si0 ₂ substrate mixture + Zr0 ₂

Substrate mixture + ZnO substrate mixture + T1O2 + S1O2 + T1O2 substrate mixture + T1O2 + AI2O3 + T1O2 substrate mixture + T1O2 + Mg0 ^* Si02 + T1O2 substrate mixture + T1O2 + Ca0 ^* Si02 + T1O2 substrate mixture + T1O2 + Al203 ^* Si02 + T1O2

Substrate mixture + T1O2 + B203 ^* Si02 + T1O2 substrate mixture + Fe203 + S1O2 + T1O2 substrate mixture + Fe2Ü3 + S1O2 + T1O2 substrate mixture + Fe203 + S1O2 + Fe2O3 substrate mixture + Fe2Ü3 + S1O2 + Sn02 + Fe2Ü3 substrate mixture + Fe2Ü3 + AI2O3 + T1O2

Substrate mixture + Fe2Ü3 + Al2O3 + Fe2Ü3 substrate mixture + Fe2C> 3+ Mg0 ^* Si02 + T1O2 substrate mixture + Fe203 + Ca0 ^* Si02 + T1O2 substrate mixture + Fe2Ü3 + Al203 ^* Si02 + T1O2 substrate mixture + Fe203 + B203 ^* Si02 + T1O2 substrate mixture + Fe203 + Mg0 ^* Si02 + Fe2Ü3 substrate mixture + Fe203 + Ca0 ^* Si02 + Fe2Ü3 substrate mixture + Fe2C> 3 + Al203 ^* Si02 + Fe2Ü3 substrate mixture + Fe203 + B203 ^* Si02 + Fe2Ü3 substrate mixture + Ti02 / Fe203 + S1O2 + T1O2 substrate mixture + Ti02 / Fe203 + AI2O3 + T1O2

Substrate mixture + Ti02 / Fe203 + Mg0 ^* Si02 + T1O2 substrate mixture + Ti02 / Fe203 + Ca0 ^* Si02 + T1O2 substrate mixture + Ti02 / Fe203 + Al203 ^* Si02 + T1O2 substrate mixture + Ti02 / Fe203 + B203 ^* Si02 + T1O2 substrate mixture + T1O2 + S1O2 + Ti203 substrate mixture + T1O2 + S1O2 + Ti02 / Fe203 + S1O2 + Ti02 / Fe203

Substrate mixture + Ti02 / Fe203 + Mg0 ^* Si02 + Ti02 / Fe203 substrate mixture + T1O2 + AI2O3 + Ti02 / Fe203

15. The method for producing the interference pigments according to one or more of claims 1 to 14, characterized in that a mixture of Si0 ₂ platelets with at least 4 different

Layer thicknesses are coated with at least one high-index layer.

16. Use of the interference pigments according to one or more of claims 1 to 14 in paints, varnishes, printing inks, security printing inks, plastics, ceramic materials, glazes, glasses, in cosmetic formulations, and for the production of pigment preparations and dry preparations, for coloring food and pharmaceutical products.

17. Formulations containing the interference pigment according to one or more of claims 1 to 14.

18. Formulations according to claim 17, characterized in that, in addition to the interference pigments, they 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, colorants, humectants, film formers, fillers, odorants, flavorings, insect repellents, preservatives, corrosion inhibitors, cosmetic oils, solvents, oxidants, vegetable

Ingredients, buffer substances, reducing agents, surfactants, propellants, opacifiers, UV filters and UV absorbers, denaturants, aloe vera, avocado oil, coenzyme Q10, green tea extract, viscosity regulators, perfume, vitamins, enzymes, trace elements, proteins, carbohydrates, essential fats , Minerals, natural dyes, nature-identical dyes,

Biochar, acids, sugar, fats, flavor enhancers, dyes, flavorings, sweeteners, coloring food extracts, coloring fruit and plant extracts, cocoa, wax, gum arabic, cellulose, cellulose derivatives, starch,

Spirulina, protein and protein derivatives, carrage.