JP6848969B2 - Multicolor toothpaste - Google Patents

Description

The present invention relates to a multicolor dentifrice preparation that has excellent vividness of color and gives a clear and stable multicolor pattern appearance.

As a dentifrice, a multicolor dentifrice that is squeezed out into a striped pattern when extruded from a container is on the market from the viewpoint of aesthetics and attractiveness. The color combination is generally composed of a white kneaded portion, which is a normal color of the toothpaste composition, and a colored kneaded portion other than white.

Usually, when coloring a toothpaste composition, a water-soluble pigment such as Blue No. 1 is often used from the viewpoint of color vividness, but a multicolored pattern such as a stripe shape is often used from a general tube container or the like. It is known that water-insoluble pigments, chlorophyll, etc. are used to prevent color transfer and color bleeding between toothpaste compositions of different colors when water-soluble pigments are used in the multicolor dentifrice extruded in. Is.
However, when a pigment is used, the color tone lacks vividness, and the problem is particularly remarkable when the colored portion is a warm color system of red or yellow. Further, there is a problem that the transparency of the colored toothpaste composition is lost and it is difficult to give a transparent appearance, which is a problem in terms of aesthetic appearance.

Patent Document 1 (Japanese Patent Laid-Open No. 60-48918) describes a multicolored toothpaste in which color mixing is improved by using a chlorophyll derivative such as water-soluble copper chlorophyll as a colorant, and Patent Document 2 (Japanese Patent Laid-Open No. 2003-). 321333) proposes a multicolored chlorophyll containing a water-soluble copper compound that has a clear color, high transparency, and an attractive striped pattern. Further, Patent Document 3 (Japanese Patent Laid-Open No. 2-72112) describes a stable non-bleed-striped dentifrice composition using the organic pigments β-carotene and chlorophyllin as colorants, and Patent Document 4 (Japanese Patent Laid-Open No. 59-). 231010) proposes a colored dentifrice that is macroscopically transparent and exhibits a striped pattern, containing a phthalocyanine-type pigment that is a conjugated pigment having a strong color.

Japanese Unexamined Patent Publication No. 60-48918 Japanese Unexamined Patent Publication No. 2003-321333 Japanese Unexamined Patent Publication No. 2-72112 Japanese Unexamined Patent Publication No. 59-23010

However, the aesthetics of conventional multicolor dentifrice preparations are still insufficient and there is room for improvement. Therefore, it has been desired to develop a technique for improving the vividness of colors and giving a clear and stable appearance.

The present invention has been made in view of the above circumstances, and is a multicolor toothpaste that gives a clear and stable multicolor pattern appearance in which vividness of color tone is excellent, color bleeding is suppressed over time, and color mixing is suppressed. The purpose is to provide a formulation.

As a result of diligent studies to achieve the above object, the present inventor has a multicolored dentifrice preparation having a multicolored pattern in which a non-white colored dentifrice composition is filled in a container adjacent to the white dentifrice composition. In, (A) a specific water-insoluble dye and (B) an aluminum lake dye are used in combination as a colorant of the colored dentifrice composition, and (C) a specific binder is used to obtain this. It was found that the above-mentioned problems and objectives can be achieved by adjoining (D) white particles and (C) a white dentifrice composition containing a specific binder. That is, in the present invention, one or more water-insoluble dyes selected from (A) vat dyes, oil-soluble dyes and pigments (excluding aluminum lakes), (B) aluminum lake dyes, (C). ) (C-1) Colored dentifrice composition (I) containing polyacrylic acid salt and / or alginate, (D) white particles, (C) (C-2) polyacrylic acid salt and / or alginate. By filling the container with the white dentifrice composition (II) containing the above without mixing, the vividness of the color tone is excellent, the color bleeding is suppressed over time, and the color mixture is suppressed. It is possible to obtain a multicolored dentifrice preparation that gives a clear and stable multicolored pattern appearance.

In multicolor dentifrices, improper use of water-insoluble dyes such as pigments lacks vividness of color, and use of water-soluble dye causes color transfer and color mixing. It was difficult to give a clear and stable appearance by preventing color bleeding and color mixing while increasing vividness, whereas in the present invention, the water-insoluble pigments (A) and (B) are used. Unexpectedly, the combination makes the color of the colored toothpaste composition brighter and the contrast of the multicolored pattern appearance becomes clearer. Furthermore, by using the component (C) together, the toothpaste composition can be stored even after storage. Color bleeding is suppressed, and kneading stability can be imparted so that the color does not mix between the toothpaste compositions even if the container is kneaded several times with a finger and then extruded. In this case, if the component (B) is used in combination with the component (A), the vividness of the hue will be enhanced, but the color will bleed over time, or the color will be mixed when extruded from the container. However, by combining the component (C), it is possible to give a multicolored pattern appearance such as a vivid, clear and stable stripe shape without causing such color bleeding and color mixing. Thereby, in the present invention, the coloring composition containing the above-mentioned (A), (B) and (C) ((C-1)) components, and the (C) ((C-2)) and (D) components. The combination of the white composition containing the above exerts a special effect.
According to the present invention, even a multicolor dentifrice preparation colored in a warm color system such as red, yellow, or orange, which lacks vividness of color, can give a satisfactory vivid color and is colored. It is possible to increase the transparency of the toothpaste composition and make the boundary with the opaque white toothpaste composition clearer, and further improvement in aesthetics can be expected.

In addition, Patent Documents 1 and 2 are water-soluble pigments, and Patent Documents 3 and 4 are color improvement by organic pigments β-carotene, chlorophyllin, and phthalocyanine type pigments. ), (C), and (D) are used in combination to improve the vividness of the hue of the multicolor dentifrice preparation and suppress color bleeding and color mixing.

Therefore, the present invention provides the following multicolor dentifrice preparations.
[1]
(A) One or more water-insoluble dyes selected from vat dyes, oil-soluble dyes and pigments (excluding aluminum lakes),
(B) Aluminum rake pigment,
(C) (C-1) A colored toothpaste composition (I) containing at least one selected from polyacrylate and alginate, and
(D) White particles,
(C) (C-2) A white toothpaste composition (II) containing at least one selected from polyacrylate and alginate is adjacently filled in a container. Color toothpaste preparation.
[2]
The components (A) and (B) are one or more selected from red pigment, yellow pigment and orange pigment, respectively, and the component (A) and the component (B) are pigments of the same color or different colors [ 1] The multicolored dentifrice according to the above.
[3]
(A) The multicolor dentifrice preparation according to [1] or [2], wherein the component is one or more selected from Red No. 202 and Red No. 226.
[4]
(B) Described in any one of [1] to [3], wherein the component (B) is an aluminum lake product of one or more dyes selected from Yellow No. 4, Yellow No. 203, Red No. 218 and Red No. 223. Multicolor dentifrice preparation.
[5]
The multicolor dentifrice according to any one of [1] to [4], wherein (A) / (B) indicating the blending ratio of the components (A) and (B) is 0.2 to 5 in mass ratio.
[6]
The content of the component (A) is 0.0001 to 0.02% by mass and the content of the component (B) is 0.0001 to 0.005% by mass with respect to the entire colored toothpaste composition (I). The multicolor dentifrice preparation according to any one of [1] to [5].
[7]
The multicolored dentifrice according to any one of [1] to [6], wherein the content of the component (C-1) is 0.1 to 1.4% by mass with respect to the entire colored dentifrice composition (I). ..
[8]
The multicolored dentifrice preparation according to any one of [1] to [7], wherein the colored dentifrice composition (I) is transparent.
[9]
The colored dentifrice composition (I) further contains a silica-based abrasive in an amount of 5 to 35% by mass based on the entire colored dentifrice composition (I), and has a refractive index of 1.43 to 1.45 [1] to 1. The multicolor dentifrice preparation according to any one of [8].
[10]
(D) The multicolor dentifrice preparation according to any one of [1] to [9], wherein the white particles are a white pigment and a water-insoluble inorganic abrasive.
[11]
The multicolored dentifrice preparation according to any one of [1] to [10], wherein the colored dentifrice composition (I) and the white dentifrice composition (II) are adjacent to each other in a stripe shape.
[12]
The multicolor dentifrice preparation according to any one of [1] to [11], which is filled in a single tube container having no partition wall inside the container.

According to the present invention, it is possible to provide a multicolor dentifrice preparation which is excellent in vividness of color, suppresses color bleeding over time, and gives a clear and stable multicolor pattern appearance in which color mixing is suppressed. In the present invention, it is also possible to make the colored portion highly transparent to enhance the sharpness of the multicolored pattern, and it is possible to provide a multicolored dentifrice preparation having excellent aesthetic appearance.

The multicolor dentifrice preparation of the present invention comprises one or more water-insoluble dyes selected from (A) virgin dyes, oil-soluble dyes and pigments (excluding aluminum lakes), (B) aluminum lake dyes, ( C) Colored toothpaste composition (I) containing (C-1) polyacrylic acid salt and / or alginate, (D) white particles, (C) (C-2) polyacrylic acid salt and / or alginate. The non-white colored toothpaste composition (I) and the white toothpaste composition (II) containing the salt-containing white toothpaste composition (II) were adjacently filled in the container without being mixed. It is a thing.
Here, as the multicolor dentifrice preparation, the dentifrice composition (I) and (II) have a striped shape having one or two adjacent adjacent surfaces, or are adjacent to the inside of the outer layer (dentifrice composition (I)). Examples thereof include a layer having an inner layer (toothpaste composition (II)).

The water-insoluble dye of the component (A) is one or more kinds of dyes selected from vat dyes, oil-soluble dyes, and pigments (excluding aluminum lakes). It is preferably one or more selected from vat dyes and pigments.
Here, the vat dye is a water-insoluble dye, which has the property of being reduced by hydrosulfite (sodium dithionite) to become water-soluble and returning to the original water-insoluble dye by air oxidation.
Oil-soluble dyes (also referred to as oil-based dyes) are water-insoluble dyes and have the property of being soluble in alcohol or oil.
Pigments are powders used for coloring and have the property of being insoluble in water, oil, and alcohol.

The color of the water-insoluble pigment of the component (A) is not particularly limited, and may be a warm color or a cold color, and when two or more kinds are used in combination, the same color or a different color may be used. Color is preferred. With such a warm color system, the vividness of the hue is further improved.

Specific examples of the component (A) include the following water-insoluble pigments, and one or more of these can be used.
Vat dye:
Red No. 226, Blue No. 201, Blue No. 204 Oil-soluble dyes:
Red 223, 225, 215, 218, 501, 505; Daidai 201, 206, 403; Yellow 201, 204, 404, 405; Green 202; Blue 403 pigment :
Red 220, 221, 228, 202, 203, 204, 206, 207, 208, 404, 405, Daidai 203, 204, 401, Yellow 205, 401 , Blue No. 404, Bengala (iron oxide)
Among them, the vat dye Red No. 226 and the pigment Red No. 202 are more preferable from the viewpoint of no color bleeding and color tone.

The content of the water-insoluble pigment of the component (A) is preferably 0.0001 to 0.02% (mass%, the same applies hereinafter) with respect to the entire colored toothpaste composition (I), and more preferably 0.0005 to 0.005-. It is 0.01%. The higher the content, the better the color tone, and when it is 0.0001% or more, a sufficient color tone can be obtained. When it is 0.02% or less, the vividness of the color can be sufficiently maintained.

The aluminum lake dye of the component (B) is an aluminum lake product of a water-soluble dye and an oil-soluble dye, and is water-insoluble. The aluminum lake dye can be obtained by a known production method. For example, it can be obtained by ionizing a water-soluble dye and an oil-soluble dye and electrically binding them to a metal ion as a carrier to insolubilize the dye.
The color of the aluminum lake pigment of the component (B) is not particularly limited, and may be the same color or a different color as the component (A), or may be a warm color or a cold color, and when two or more kinds are used in combination. May be the same color or different colors, but warm colors such as red, yellow, and orange are particularly preferable. With such a warm color system, the vividness of the hue is further improved.

Specific examples thereof include aluminum lakes of the following water-soluble dyes and oil-soluble dyes, and one or more of these can be used.
Water-soluble pigment:
Red Nos. 2, 3, 102, 104, 105, 106, 227, 230, 231, 232, 401, 502, 503, 504, 506; Daidai 205, 207, 402; Yellow 4, 5, 202, 203, 402, 403, 407; Green 3, 201, 204, 205, 402; Blue 1, 2 , No. 205 oil-soluble dye:
Red 223, 225, 215, 218, 501, 505; Daidai 201, 206, 403; Yellow 201, 204, 404, 405; Green 202; Blue 403 These Among them, yellow No. 4 aluminum lake, yellow No. 203 aluminum lake, red No. 218 aluminum lake, and red No. 223 aluminum lake are particularly preferable, and yellow No. 4 aluminum lake and yellow No. 203 aluminum lake are particularly preferable. , More preferable in terms of vividness of color.

The content of the aluminum lake pigment of the component (B) is preferably 0.0001 to 0.005%, more preferably 0.001 to 0.003%, based on the entire colored toothpaste composition (I). The higher the content, the better the color tone, and when it is 0.0001% or more, a sufficient color tone can be obtained. When it is 0.005% or less, color bleeding can be sufficiently suppressed.

In the present invention, it is more preferable to combine the components (A) and (B) in a specific ratio. The mass ratios of (A) / (B) indicating the blending ratios of the components (A) and (B) are preferably 0.2 to 5, more preferably 0.3 to 5, and even more preferably 0. It is 3 to 3.3. Within this range, color bleeding is more suppressed and a more vivid color can be imparted. If it is less than 0.2, color bleeding may occur and cannot be suppressed, and if it exceeds 5, it may not be possible to obtain a sufficiently vivid color.

The component (C) is one or more selected from polyacrylate and alginate, and is preferably a combination of polyacrylate and alginate. When polyacrylate and / or alginate is blended as a binder, color bleeding is suppressed and kneading stability is excellent. If polyacrylate is lacking, color bleeding may not be suppressed, and if alginate is lacking, not only color bleeding may not be suppressed, but also kneading stability may be inferior.
As the polyacrylate and alginate, these alkali metal salts, specifically sodium polyacrylate and sodium alginate, can be used. Commercially available Toagosei Co., Ltd., Kimika Co., Ltd., etc. can be used.

(C) The total content of (C-1) polyacrylate and / or alginate is 0.1 to 1.4% with respect to the total colored toothpaste composition (I), particularly 0.2 to 1. It is preferably 4%, more preferably 0.4 to 1.0%. Within this range, color bleeding can be sufficiently suppressed, and sufficient kneading stability can be obtained.
Further, when polyacrylate is contained as the component (C) (component (C-1)), the content thereof is 0.1 to 1.4% of the total amount of the colored toothpaste composition (I), particularly 0. .1 to 0.7% is preferable, and 0.2 to 0.5% is more preferable. When it is 0.1% or more, color bleeding can be sufficiently suppressed, and when it is 1.4% or less, sufficient kneading stability can be obtained.
When alginate is contained, the content thereof is preferably 0.1 to 1.4%, particularly 0.1 to 0.7% of the entire colored toothpaste composition (I), and more preferably 0.2. ~ 0.5%. When it is 0.1% or more, color bleeding can be sufficiently suppressed and sufficient kneading stability can be obtained, and when it is 1.4% or less, the color bleeding suppressing effect can be satisfactorily maintained.

When the polyacrylic acid salt and the alginate salt are used in combination, the blending ratio thereof is not particularly limited, but the mass ratio is preferably 0.14 to 7, particularly 0.25 to 4. Within this range, the effect of suppressing color bleeding and the kneading stability are more excellent. If it is less than 0.14, color bleeding may not be suppressed, and if it exceeds 7, the kneading stability may decrease.

As the binder, substances other than the component (C), for example, gums such as xanthan gum, and cellulose derivatives such as sodium carboxymethyl cellulose may be added as long as the effects of the present invention are not impaired, but in particular, cellulose derivatives. When sodium carboxymethyl cellulose is added, the amount of addition thereof is preferably 0.1 % or less, particularly 0.05 % or less of the whole composition, and may be non-addition (0%).

Examples of the (D) white particles contained in the white toothpaste composition (II) include (D-1) white pigments such as titanium oxide and zinc oxide, (D-2) calcium compounds such as aluminum hydroxide and calcium carbonate, and carbonic acid. Examples thereof include magnesium compounds such as magnesium, and water-insoluble inorganic abrasives such as zeolite and calcium anhydride. These can be used alone or in combination of two or more. Further, the component (D-1) or the component (D-2) may be used, but preferably, the component (D-1) and the component (D-2) are used in combination, particularly the white pigment and the water-insoluble component. It is a combined use with an inorganic abrasive, and more preferably a combined use of titanium oxide and silicic anhydride.
The content of the white pigment (D-1) is preferably 0.1 to 2%, more preferably 0.2 to 1% of the entire white toothpaste composition (II). The content of the (D-2) abrasive is 5 to 50%, preferably 10 to 45%. When the component (D) is within this range, the contrast of the boundary with the colored toothpaste becomes clear, and a clean striped toothpaste can be obtained. If it is too much, the toothpaste surface may become rough.

The component (C) ((C-2) polyacrylate and / or alginate) contained in the white toothpaste composition (II) is the same as the component (C-1) of the colored toothpaste composition (I). is there.
When polyacrylate is contained as the component (C-2), the content thereof is preferably 0.1 to 0.7%, particularly 0.2 to 0.5% of the total amount of the white toothpaste composition (II). .. When alginate is contained, the content thereof is preferably 0.1 to 0.7%, particularly 0.2 to 0.5% of the total amount of the white toothpaste composition (II). Further, the total content of (C-2) polyacrylate and / or alginate is preferably 0.2 to 1.4%, more preferably 0.4%, based on the entire white toothpaste composition (II). ~ 1.0%. Within this range is more suitable for exhibiting the effect of the present invention.
The same applies to the binders other than the component (C).

In the present invention, the colored toothpaste composition (I) is preferably translucent or transparent, more preferably transparent, and the white toothpaste composition (II) is translucent or opaque.
By adjusting the refractive index of the colored toothpaste composition (I) to be similar to the refractive index of the abrasive to be blended (1.43 to 1.45 in the case of a silica-based abrasive), the color becomes highly transparent. As the hue becomes more vivid, the boundary with the adjacent opaque white dentin composition (II) becomes clearer.

In this case, examples of the abrasive to be blended in the colored toothpaste composition (I) include silica-based abrasives such as silicon dioxide, aluminosilicate and zirconosilicate, and calcium carbonate-based abrasives. While the refractive index of the agent is about 1.44, the refractive index of calcium carbonate is as high as 1.50 to 1.64, and in the calcium carbonate-based abrasive, the solvent usually used in the toothpaste composition is used. Since it is difficult to match the refractive index, it is preferable to use a silica-based abrasive. The content of the abrasive, particularly the silica-based abrasive, is preferably 5 to 35%, particularly preferably 10 to 25%, based on the entire colored dentifrice composition (I).
In the present invention, a water-insoluble inorganic abrasive, particularly silicic acid anhydride, is used as the component (D-2) in the white dentifrice composition (II), and a silica-based abrasive is used in the colored dentifrice composition (I). When the same silicic acid anhydride used as the component (D-2) is added, the difference in physical properties such as viscosity of both toothpaste compositions becomes small and the kneading stability becomes good. More preferable.

The refractive index was measured by an Abbe refractometer (NAR-1T SOLID, manufactured by ATAGO) (hereinafter, the same applies). Further, the following method can be adopted for adjusting the refractive index.
Refractive index adjustment method The refractive index of the toothpaste composition is one or two selected from sorbitol, propylene glycol, polyethylene glycol having an average molecular weight of 280 to 1,050 (average molecular weight described in the raw material standard for non-pharmaceutical products 2006), and the like. Since it is determined by the amount of sugar alcohol and polyhydric alcohol and the amount of water, the refractive index can be adjusted by the balance of each amount. The amount of polyhydric alcohol is preferably 40 to 70% of the total amount of the colored toothpaste composition (I).
In the dentifrice composition, the sugar alcohol and the polyhydric alcohol are generally blended as a thickener and water is generally blended as a liquid medium, and can be similarly blended in the present invention.

The multicolor dentifrice preparation of the present invention is particularly suitable as a dentifrice, and in the colored dentifrice composition (I) and the white dentifrice composition (II), in addition to the above components, general components of the dentifrice composition, respectively. Can be blended as needed without interfering with the effects of the present invention. For example, surfactants, sweeteners, preservatives, flavors, active ingredients and the like can be mentioned. The same applies to the white dentifrice composition (II) as for the abrasive and the viscous agent.

As the surfactant, an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant, which are generally used in toothpaste compositions, can be blended.
Examples of the anionic surfactant include alkyl sulfates such as sodium lauryl sulfate and sodium myristyl sulfate, N-acylsulfosate such as sodium N-lauroyl sarcosin, N-acylglutamate, α-olefin sulfonate and the like. Be done.
Examples of the nonionic surfactant include sugar fatty acid esters such as sucrose fatty acid ester, sugar alcohol fatty acid esters such as maltitol fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and poly. Examples thereof include oxyethylene hydrogenated castor oil, polyoxyethylene higher alcohol ether, and fatty acid alkanolamide.
Examples of the cationic surfactant include alkylammonium and alkylbenzylammonium, and examples of the amphoteric surfactant include betaine-based acetates such as alkylbetaine and betaine alkyldimethylaminoacetate, and betaine-based surfactants such as alkylimidazolinium betaine. Imidazoline type can be mentioned.
The blending amount of the surfactant is preferably 0.001 to 10%, particularly 0.01 to 5% of the entire dentifrice composition.

Examples of the sweetener include sodium saccharin, and examples of the preservative include paraoxybenzoic acid esters such as methyl paraoxybenzoate, benzoic acid or salts thereof.

Fragrances include peppermint oil, sparemint oil, anis oil, eucalyptus oil, winter green oil, cassia oil, clove oil, thyme oil, sage oil, lemon oil, orange oil, peppermint oil, cardamon oil, coriander oil, mandarin oil, Lime oil, lavender oil, rosemary oil, laurel oil, camomill oil, caraway oil, majorum oil, bay oil, lemongrass oil, origanum oil, pine needle oil, neroli oil, rose oil, jasmine oil, grapefruit oil, sweetie Natural fragrances such as oil, yuzu oil, iris concrete, absolute peppermint, absolute rose, orange flower, and processing of these natural fragrances (front reservoir cut, rear reservoir cut, distilling, liquid extraction, essence, powder Fragrances (such as fragrances) and menthol, carboxylic, anator, cineole, methyl salicylate, synamic aldehyde, eugenol, 3-l-mentoxypropane-1,2-diol, timol, linalol, linaryl acetate, limonene, Menton, Menthylacetate, N-Substituted-Peppermint-3-Carboxamide, Pinen, Octylaldehyde, Citral, Pregon, Calvia Acetate, Anisaldehyde, Ethylacetate, Ethylbutyrate, Allylcyclohexanepropionate, Methylanthranilate, Ethyl Single flavors such as methylphenylglycidate, vanillin, undecalactone, hexanal, butanol, isoamyl alcohol, hexenol, dimethylsulfide, cycloten, furfural, trimethylpyrazine, ethyllactate, ethylthioacetate, strawberry flavor, apple flavor, banana Known flavoring materials used in toothpaste compositions can be used in combination, such as flavors, pineapple flavors, grape flavors, mango flavors, butter flavors, milk flavors, fruit mix flavors, tropical fruit flavors and the like. Further, it is preferable to use 0.000001 to 1% of the above fragrance material in the composition, and 0.1 to 2% of the fragrance for fragrance using the above fragrance material is used in the composition. preferable.

Active ingredients include fluorides such as sodium fluoride and sodium monofluorophosphate, nonionic bactericides such as isopropylmethylphenol, cationic bactericides such as cetylpyridinium chloride, benzalkonium chloride, and benzethonium chloride, and tranexamic acid. , Anti-inflammatory agents such as epsilon aminocaproic acid and allantin, enzymes such as dextranase and mutanase, water-soluble phosphoric acid compounds, water-soluble copper compounds, potassium nitrate, aluminum lactate, ascorbic acid or its derivatives, vitamins and the like. The blending amount of the active ingredient is an effective amount within a range that does not interfere with the effect of the present invention.

In the multicolor dentifrice preparation of the present invention, the colored dentifrice composition (I) and the white dentifrice composition (II) are preferably adjacent to each other in a striped shape, a spiral shape, a dot shape, and more preferably in a striped shape without being mixed. It is filled in the container and discharged from the container while maintaining such a shape. The ratio of the colored toothpaste composition (I) to the white toothpaste composition (II) is not particularly limited, and can be appropriately set so as to obtain a desired toothpaste appearance (design). For example, from the appearance of the multicolor dentifrice preparation, (I) / (II) = 0.1 / 99.9 to 99.1 / 0.1 (mass ratio) is preferable, and more preferably 10/90 to 90/10. , More preferably, it can be set in the range of 20/80 to 80/20. When the shape is striped or spiral, (I) / (II) = 1/99 to 99/1 is preferable, 5/95 to 95/5 is more preferable, and 10/90 to 90/10 is further preferable. , 20/80 to 80/20 are particularly preferable. When the shape is dot-shaped, (I) / (II) = 0.1 / 99.9 to 20/80 is preferable, and 1/99 to 10/90 is more preferable.

As a method for preparing the dentifrice preparation, a usual method can be adopted, and a colored dentifrice composition (I) and a white dentifrice composition (II) can be prepared and both can be filled in a container. Specifically, it can be prepared by the method of Examples described later.

Further, as the filling container, a general container for dentifrice preparation can be used, and a single tube container having no partition wall inside the container such as a filling portion or a mouth portion can be filled and used as a dentifrice product.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. In the following examples,% indicates mass% unless otherwise specified.

[Examples, comparative examples]
As shown in Tables 1 to 3, a transparent colored toothpaste composition (I) having the composition shown in Tables 1 to 3 and an opaque white toothpaste composition (II) having the composition shown in Table 4 are prepared by a conventional method. After that, the colored toothpaste and the white toothpaste are transferred to the respective hoppers in a striped toothpaste filling machine, and they are adjacent to each other in a striped shape without mixing with each other. A multicolored dentifrice preparation (test preparation) was obtained by filling in a tube container. Colored toothpaste composition (I) / white toothpaste composition (II) = 1/1 (mass ratio).
The test preparation was evaluated by the following method, and the results are also shown in Tables 1 to 3.
The refractive index was measured by an Abbe refractometer (NAR-1T SOLID, manufactured by ATAGO).

<Evaluation method of vividness of color>
The vividness of the color of the paste when the toothpaste composition of the test preparation was extruded from the tube container onto the toothbrush and placed on the toothbrush was visually judged according to the following criteria.
Here, the vividness of the color of the kneading indicates the brightness and clearness of the colored portion.
Judgment criteria ◎; Clear and vivid color ○; Slightly lacking in clearness but vivid color △; Color is almost clear but lacks brightness ×; Dull color and brightness Missing

<Evaluation method for no color bleeding>
After storing the test preparation at 50 ° C. for 30 days, the color bleeding (no color bleeding) of the dentifrice when the dentifrice composition was extruded from the tube container onto the toothbrush and placed on the toothbrush was visually determined according to the following criteria.
Judgment criteria ◎; No color bleeding and a beautiful stripe shape ○; Slight color bleeding is observed but the stripe morphology is maintained △; Color bleeding is observed and the stripe boundaries overlap slightly, Retaining the morphology of the stripes ×; Color bleeding makes the boundaries between the stripes unclear and completely mixed

<Evaluation method of kneading stability (no color mixing)>
The filling amount of the toothpaste composition in the test preparation is reduced to about half, the center of the tube container is rubbed 10 times with a finger, and then the toothpaste composition is extruded from the tube container onto the toothbrush. No) was visually judged according to the following criteria.
Judgment criteria ◎; No color mixture and beautiful stripes ○; Slight color mixture is observed but the stripe morphology is maintained △; Color mixture is observed and the boundaries between the stripes overlap slightly. , Retaining the morphology of the stripes ×; The borders of the stripes are not clear and the colors are completely mixed.

Details of the raw materials used are shown below.
(A) D & C Red 7 (Red No. 202)
Lavanya India, manufactured by NEELIKON
(A) D & C Red 30 (Red No. 226)
Lavanya Roseum, manufactured by NEELIKON
(B) D & C Yellow 5 Aluminum Rake (Yellow No. 4 Aluminum Rake)
NEELIKON, Neelicert FD & C Yellow 5 AL Lake
(B) D & C Yellow 10 Aluminum Rake (Yellow No. 203 Aluminum Rake)
Lavanya Mimosa, manufactured by NEELIKON
(B) D & C Red 27 Aluminum Rake (Red No. 218 Aluminum Rake)
Lavanya Lilac, manufactured by NEELIKON
(B) D & C Red 21 Aluminum Rake (Red No. 223 Aluminum Rake)
Lavanya Carlotta, manufactured by NEELIKON
(C) ((C-1), (C-2)) Sodium polyacrylate Toagosei Co., Ltd., RHEOGIC 260H
(C) ((C-1), (C-2)) Sodium alginate Co., Ltd. Kimika Co., Ltd., Kimika Algin (D) (D-1) Titanium oxide Titanium oxide (D) (D-) manufactured by Ishihara Sangyo Co., Ltd. 2) Silica anhydride (abrasive)
Made by PQ

Claims (12)

(A) One or more water-insoluble dyes selected from vat dyes, oil-soluble dyes and pigments (excluding aluminum lakes),
(B) Aluminum rake pigment,
(C) (C-1) A colored toothpaste composition (I) containing at least one selected from polyacrylate and alginate, and
(D) White particles,
(C) (C-2) A white toothpaste composition (II) containing at least one selected from polyacrylate and alginate is adjacently filled in a container. Color toothpaste preparation. Claims that the components (A) and (B) are one or more selected from red pigment, yellow pigment and orange pigment, respectively, and the component (A) and the component (B) are pigments of the same color or different colors. Item 1. The multicolor dentifrice preparation according to item 1. The multicolor dentifrice preparation according to claim 1 or 2, wherein the component (A) is one or more selected from Red No. 202 and Red No. 226. The one according to any one of claims 1 to 3, wherein the component (B) is an aluminum lake product of one or more dyes selected from Yellow No. 4, Yellow No. 203, Red No. 218 and Red No. 223. Multicolored toothpaste preparation. The multicolored dentifrice according to any one of claims 1 to 4, wherein (A) / (B) indicating the blending ratio of the components (A) and (B) is 0.2 to 5 as a mass ratio. The content of the component (A) is 0.0001 to 0.02% by mass and the content of the component (B) is 0.0001 to 0.005% by mass with respect to the entire colored toothpaste composition (I). The multicolor dentifrice preparation according to any one of claims 1 to 5. The multicolored dentifrice preparation according to any one of claims 1 to 6, wherein the content of the component (C-1) is 0.1 to 1.4% by mass with respect to the entire colored dentifrice composition (I). The multicolored dentifrice preparation according to any one of claims 1 to 7, wherein the colored dentifrice composition (I) is transparent. Claims 1 to that the colored dentifrice composition (I) further contains a silica-based abrasive in an amount of 5 to 35% by mass based on the entire colored dentifrice composition (I) and has a refractive index of 1.43 to 1.45. The multicolor dentifrice preparation according to any one of 8. (D) The multicolor dentifrice preparation according to any one of claims 1 to 9, wherein the white particles are a white pigment and a water-insoluble inorganic abrasive. The multicolored dentifrice preparation according to any one of claims 1 to 10, wherein the colored dentifrice composition (I) and the white dentifrice composition (II) are adjacent to each other in a stripe shape. The multicolored dentifrice preparation according to any one of claims 1 to 11, which is filled in a single tube container having no partition wall inside the container.