Dentifrice composition

Abstract

The present application provides a dentifrice composition in which colored particles are dispersed and mixed and the appearance aesthetics (uniformity of colored particles and vividness of color) are excellent. The dentifrice composition contains (A) colored particles, (B) silica, (C) titanium mica and (D) one or two selected from sorbitol and glycerol, and the mixing amount of (D) component is 40% by mass or less. The dentifrice composition further contains (E) a binder selected from the following (E-1) and (E-2) components, (E-1): one or two selected from sodium polyacrylate and carboxyvinyl polymer; (E-2): one or more selected from xanthan gum, carrageenan and sodium carboxymethylcellulose.

Description

Technical Field

[0001] The present invention relates to a dentifrice composition in which colored particles are dispersed and mixed and which has excellent aesthetic appearance (uniformity of the colored particles and vividness of the color). Background Art

[0002] When using a dentifrice composition, it is usually squeezed out of a tube container and placed on a toothbrush for use, but in this case, the quality is sometimes judged first by its appearance. Therefore, designing an aesthetically pleasing appearance that users like is an important issue because it is related not only to improving the satisfaction when using the dentifrice composition but also to continued use.

[0003] Conventionally, in order to express a beautiful appearance, the following Patent Documents 1 to 4 propose dentifrice compositions that are made transparent, glossy, or have a striped appearance, or are aesthetically pleasing by mixing colored particles. It is well known that colored particles are used to improve aesthetics.

[0004] Patent Document 1 (Japanese Patent Publication No. 7-59491): A pearly-textured dentifrice composition comprising abrasive silica, a vehicle having the same refractive index as that of the abrasive silica, titanium mica, thickening silica, and fatty acid alkanolamide.

[0005] Patent Document 2 (Japanese Patent Application Laid-Open No. 11-217320): A toothpaste composition having a pearly luster is prepared by mixing mica titanium with a toothpaste composition having a specific transparency.

[0006] Patent Document 3 (Japanese Patent Publication No. 2002-526393): A transparent liquid toothpaste preparation prepared by mixing colored silica into a transparent toothpaste gel containing sorbitol, glycerol, and polyethylene glycol as a humectant at a specific ratio.

[0007] Patent Document 4 (Japanese Patent Publication No. 2006-514117): A multi-color striped dentifrice composition comprising a first layer containing colorant particles exhibiting a striped appearance in a translucent or transparent gel phase and another second layer.

[0008] Prior art literature

[0009] Patent Literature

[0010] Patent Document 1: Japanese Patent Publication No. 7-59491

[0011] Patent Document 2: Japanese Patent Laid-Open No. 11-217320

[0012] Patent Document 3: Japanese Patent Publication No. 2002-526393

[0013] Patent Document 4: Japanese Patent Publication No. 2006-514117 Summary of the invention

[0014] Problems to be solved by the invention

[0015] However, even if colored particles are mixed into a dentifrice composition, it is difficult to impart a satisfactory aesthetic appearance, and the visual appearance still has room for improvement.

[0016] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dentifrice composition in which colored particles are dispersed and mixed and which has excellent aesthetic appearance (uniformity of the colored particles and vividness of the color).

[0017] Means to solve problems

[0018] As a result of intensive research to achieve the above-mentioned purpose, the present inventors have found that when mica titanium and a specific sugar alcohol of a specific amount or less are used and mixed in a dentifrice composition in which colored particles are mixed as colored particles and silica is mixed as a matrix, the dentifrice base becomes a moderately translucent appearance, the colored particles are uniformly dispersed and mixed in the dentifrice base, the uniformity and color clarity are improved, and the aesthetic appearance is excellent. That is, in the present invention, by mixing (C) mica titanium and (D) a sugar alcohol selected from sorbitol and glycerol into a dentifrice composition in which (A) colored particles and (B) silica are mixed, and the mixing amount of the component (D) is 40% by mass or less, a dentifrice composition in which the colored particles are dispersed and mixed, the uniformity and color clarity of the colored particles are excellent, and the aesthetic appearance is improved can be provided, thereby completing the present invention.

[0019] If further detailed, especially in transparent or translucent dentifrice composition, when mixing colored particles, especially mixing colored particles, even if the colored particles are uniformly dispersed and mixed, the colored particles on the surface and inside of the preparation will overlap and be visible, and there is a lack of uniformity in appearance. When the colored particles are mixed in the dentifrice base of the dentifrice base, especially when water is mixed in an aqueous matrix containing a solvent, the pigment used for coloring preferably uses a pigment that is difficult to dissolve, but generally there is a situation where the pigment is not sufficiently bright compared with the water-soluble dye, and in addition, when mixed in the aqueous matrix and wet, there is also a situation where the color tone deteriorates. However, according to the present invention, when (C) and (D) components are combined in (A) and (B) components, and the mixing amount of (D) component is less than a specific amount, the uniformity of the appearance of the (A) colored particles is improved, and the brightness of its color can also be improved. Thus, the present invention can provide a dentifrice composition that not only has a translucent appearance with a transparent glossy feel as a dentifrice base, but also has a uniform appearance as if the colored particles are evenly dispersed, and the color of the colored particles is bright and prominent, and has excellent aesthetic appearance.

[0020] In the present invention, in the combination of components (A), (B), (C) and (D), component (B) is used as a base, and component (D) is used in a specific amount or less, so that the appearance of the preparation that looks like component (A) is scattered, especially a moderately translucent appearance, can be designed. By further adding component (C), not only the surface of the preparation has a glossy feel, but also the color of component (A) is bright and eye-catching, which also contributes to the design of the translucent appearance, and the above-mentioned special effect can be specifically imparted.

[0021] As shown in the comparative examples described later, in Comparative Example 1, which is mixed with a comparative component (A) and has no colored particles, the uniformity of the particles and the vividness of the color of the particles are poor (both are ×). In addition, in Comparative Examples 3 and 4, which lack the (C) component, the vividness of the color of the colored particles is poor (×), and the uniformity of the colored particles of Comparative Example 3, which is mixed with titanium oxide, is also poor (×). In Comparative Example 2, in which the amount of the (D) component exceeds the specific value by too much, the uniformity of the colored particles is poor (△). The toothpaste composition (example) of the present invention has excellent uniformity of the colored particles and vividness of the color (both are ◎ or ○).

[0022] Therefore, the present invention provides the following dentifrice composition. [1]

[0024] A dentifrice composition comprising (A) colored particles, (B) silicon dioxide, (C) titanium mica, and (D) one or two selected from sorbitol and glycerol, wherein the content of the component (D) is 40% by mass or less. [2]

[0026] The dentifrice composition according to [1], wherein the component (A) is colored particles containing a water-insoluble material selected from silica and zeolite and a pigment. [3]

[0028] The dentifrice composition according to [1] or [2], wherein the component (A) is colored silica particles. [4]

[0030] The dentifrice composition according to [1] or [2], wherein the component (A) is red particles, blue particles or green particles. [5]

[0032] The dentifrice composition according to [1] or [2], wherein the component (B) is silica selected from abrasive silica and thickening silica. [6]

[0034] The dentifrice composition according to [1] or [2], comprising 0.01 to 2% by mass of component (A), 5 to 40% by mass of component (B), 0.01 to 2% by mass of component (C), and 5 to 40% by mass of component (D). [7]

[0036] The dentifrice composition according to [1] or [2], further comprising 0.1 to 3.5% by mass of (E) a binder selected from the following components (E-1) and (E-2),

[0037] (E-1): one or two selected from sodium polyacrylate and carboxyvinyl polymer;

[0038] (E-2): one or more selected from the group consisting of xanthan gum, carrageenan and sodium carboxymethyl cellulose. [8]

[0040] The dentifrice composition according to [1] or [2], wherein the dentifrice base excluding the component (A) is translucent. [9]

[0042] The dentifrice composition according to [8], wherein the dentifrice composition is a dentifrice composition in which the (A) colored particles are dispersed and mixed in a translucent dentifrice base.

[0043] Effects of the Invention

[0044] According to the present invention, it is possible to provide a dentifrice composition in which colored particles are dispersed and mixed and which has excellent aesthetic appearance (uniformity of the colored particles and vividness of the color). DETAILED DESCRIPTION

[0045] The present invention is described in more detail below: The dentifrice composition of the present invention contains (A) colored particles, (B) silicon dioxide, (C) mica titanium, and (D) a sugar alcohol selected from sorbitol and glycerol.

[0046] In the present invention, the uniformity of the colored particles means that the colored particles appear to be evenly dispersed throughout the dentifrice base of the preparation. The vividness of the color of the colored particles means that the color of the colored particles appears to be vivid and prominent.

[0047] (A) Colored particles are particles containing particle substrate particles (core) and pigments, and the particle substrate particles are pigment-colored particles. The particle substrate particles and the pigments are not particularly limited as long as they are substances that can be mixed in the dentifrice composition. As the particle substrate particle component, a water-insoluble material can be used, and the pigment is preferably an organic pigment that is insoluble in water, and preferably a pigment can be used.

[0048] The water-insoluble material is preferably a material selected from silica and zeolite, and one kind may be used alone or two or more kinds may be used in combination. Among them, silica is more preferred.

[0049] The pigment is preferably a pigment other than white, and red pigment, blue pigment, and green pigment are particularly preferred. For example, the following commercially available pigments can be used as these pigments.

[0050] Red Pigment

[0051] CI Pigment Red 181 (CI73360)

[0052] CI Pigment Red 4 (CI12085)

[0053] CI Pigment Red 5 (CI12490)

[0054] CI Pigment Red 112 (CI12370)

[0055] CI Pigment Red 122 (CI73915)

[0056] CI Pigment Red 254 (CI56110)

[0057] Blue Pigment

[0058] CI Pigment Blue 15 (CI74160)

[0059] CI Pigment Blue 15:1 (CI74160)

[0060] CI Pigment Blue 15:3 (CI74160)

[0061] CI Pigment Blue 15:6 (CI74160)

[0062] CI Pigment Blue 80 (CI77007)

[0063] Green Pigment

[0064] CI Pigment Green 7 (CI74260)

[0065] CI Pigment Green 36 (CI74265)

[0066] The colored particles are preferably colored silica particles, more preferably red silica particles, blue silica particles, or green silica particles.

[0067] As the granule substrate particles, crushed or granulated materials can be used. In addition to the above materials, known components that can be usually mixed with particles can also be added to the constituent components, specifically, flavoring components, other excipients, medicinal ingredients, etc. These optional components can be added within the range that does not hinder the effect of the present invention.

[0068] The granular substrate particles can be prepared by a common method using raw material constituent components.

[0069] The amount of the pigment used is not particularly limited as long as it can cover the entire surface of the particle substrate particles. The amount of the pigment used is preferably 0.01% (mass %, the same below) relative to the total particle substrate particles of the colored particles. Based on the embodiment of the effect of the present invention, it is particularly preferably 0.02% or more. The upper limit of the amount used is not particularly limited, and is usually set to 10% or less, and is particularly preferably set to 5% or less. As the form of the colored particles of the present invention, the content of the pigment relative to the total colored particles is preferably 0.01 to 10%, and more preferably 0.02 to 5%.

[0070] The colored particles can be used in either disintegrating particles or non-disintegrating particles. When disintegrating particles are used, the average disintegration strength is preferably 10 to 100 g / piece, more preferably 15 to 50 g / piece. When disintegrating particles within this range are used, the discomfort caused by the particles during tooth cleaning can be fully prevented, so it is preferred.

[0071] The average disintegration strength of the above-mentioned particles is the average value of the automatic breaking strength measurement values ​​(the load at which the particle disintegrates when one particle is compressed at a speed of 10 mm / min) measured for 30 particles one by one using a rheometer (Sun Rheo Meter CR-200D manufactured by Sun Scientific) (the same applies hereinafter).

[0072] The average particle size of the colored particles is preferably 150 to 800 μm, more preferably 200 to 500 μm. The larger the average particle size, the better the visualization of the particles. However, if it is 800 μm or less, the unpleasant discomfort caused by the particles during tooth cleaning can be sufficiently prevented.

[0073] The average particle size of the above particles is a value based on mass, which is obtained by measuring the mass of particles remaining on each sieve after sieving with a JIS sieve and calculating the 50% particle size from the mass distribution (the same applies hereinafter).

[0074] Such colored particles can be obtained by making the surface of the pigment coated particle substrate particle (core), and the preparation method can adopt common methods. In addition, commercially available products can also be utilized. As commercially available products, colored silica particles (trade name: Sorbosil BFG54, red silica particles, pigment: CI Pigment Red 181; Trade name: Sorbosil BFG51, blue silica particles, pigment: CI Pigment Blue 15:1, trade name: Sorbosil BFG52, green silica particles, pigment: CI Pigment Green 7) made by PQ company can be cited.

[0075] The amount of the colored particles (A) mixed is preferably 0.01 to 2%, more preferably 0.05 to 1%, of the entire composition. Within the above range, the colored particles have a very excellent uniform feel and a good feeling during use can be sufficiently maintained.

[0076] In addition, the silica of component (B) may be non-colored silica, and examples thereof include abrasive silica and thickening silica. The average particle size of the silica of component (B) may be within the range generally used for abrasive silica and thickening silica, and is not particularly limited, but is preferably 3 to 30 μm, and more preferably 3 to 25 μm (laser scattering measurement method, D50, volume basis).

[0077] Examples of abrasive silica include silica gel, precipitated silica, zirconium silicate, aluminum silicate and the like.

[0078] Such abrasive silica can be a commercially available item, and for example, abrasive silicic anhydride manufactured by Huber Co., Ltd. (trade name: Zeodent 103) can be used.

[0079] Examples of thickening silica include gelled silica and gelled alumina silica.

[0080] Such thickening silica can be a commercially available product, and for example, thickening silicic anhydride manufactured by Huber (trade name: Zeodent 165) can be used.

[0081] The blending amount of (B) silicon dioxide is preferably 5 to 40% of the entire composition, more preferably 10 to 35%, and further preferably 15 to 30%. When the blending amount is 5% or more, the effect of the present invention is manifested, and when it is 40% or less, the formulation stability is fully ensured and the uniformity of the colored particles is very excellent.

[0082] In addition, when the abrasive silica is mixed within the range of the mixing amount of the above-mentioned component (B), the preferred mixing amount is 5 to 30% of the entire composition, more preferably 10 to 25%. The preferred mixing amount of thickening silica is 0 to 10% of the entire composition, particularly 1 to 10%.

[0083] (C) Mica titanium plays a role in imparting gloss to the surface of the dentifrice and improving the vividness of the color of the colored particles, and is also associated with an improvement in the uniformity of the particles.

[0084] The mica titanium preferably has an average particle size of 10 to 200 μm, more preferably 50 to 150 μm, and further preferably 80 to 120 μm. Within the above range, a sufficient mixing effect is obtained. The average particle size of the mica titanium is D50, a value based on volume, and is a value measured by laser scattering measurement (the same below).

[0085] The mica titanium may be a commercially available product, for example, trade name: Timiron MP-115 (manufactured by Merck KK, D50=100 μm) may be used.

[0086] (C) The mixing amount of mica titanium is preferably 0.01 to 2% of the entire composition, more preferably 0.05 to 2%, and particularly preferably 0.05 to 1%. When the mixing amount is 0.01% or more, the color clarity of the colored particles is very excellent, and the uniformity of the colored particles is improved. When it is 2% or less, the color clarity of the colored particles is excellent, and the formulation stability is also good.

[0087] The component (D) is a sugar alcohol selected from sorbitol and glycerol, and may be sorbitol or glycerol, or sorbitol and glycerol. The component (D) helps to adjust the transparency of the (B) silicon dioxide based on the dentifrice base and improve the uniformity of the colored particles.

[0088] As the sugar alcohol, commercially available products can be used. For example, sorbitol can be NEOSORB (produced by Rocket Co., Ltd.), and glycerol (produced by Sakamoto Yakuin Kogyo Co., Ltd.) can be used.

[0089] The blending amount of component (D) is 40% or less of the entire composition, preferably 5 to 40%, and more preferably 10 to 35%. When the blending amount exceeds 40%, the transparency is too high, deviating from the desired translucent range, and the uniformity of the colored particles will deteriorate. When the blending amount is 5% or more, the dentifrice base becomes moderately translucent, and the uniformity of the colored particles is very excellent.

[0090] The dentifrice composition of the present invention preferably further comprises a binder selected from the following components (E-1) and (E-2) in addition to the above components as the component (E). When the component (E) is mixed, the shape retention and appearance of the preparation are further improved, and the uniformity of the colored particles and the vividness of the color can be further improved.

[0091] The component (E) is preferably one or more selected from the following components (E-1) and (E-2), and it is particularly preferred to use the components (E-1) and (E-2) in combination.

[0092] (E-1): one or two selected from sodium polyacrylate and carboxyvinyl polymer;

[0093] (E-2): one or more selected from the group consisting of xanthan gum, carrageenan and sodium carboxymethyl cellulose.

[0094] As the component (E-1), sodium polyacrylate is particularly preferred, and cross-linked sodium polyacrylate is more preferred. As the component (E-2), xanthan gum is particularly preferred. Commercially available products can be used for the components (E-1) and (E-2).

[0095] In addition, the (E-1) component improves the shape retention of the preparation, ensures a moderate translucent appearance of the dentifrice base, and brings sufficient shape retention. The (E-2) component improves the glossiness of the preparation surface, especially the glossiness of the paste surface, and brings sufficient brightness. When the above-mentioned (E-1) and (E-2) components are used together, the two interact to ensure a moderate translucent appearance, and the shape retention and preparation surface of the preparation are further improved, and the uniformity of the colored particles and the brightness of the color are further improved.

[0096] When the component (E) is mixed, its mixing amount is 0.1 to 3.5% of the entire composition, particularly preferably 0.4 to 3%, and particularly preferably 0.5 to 2%.

[0097] In addition, when the (E-1) component is mixed within the range of the mixing amount of the above-mentioned (E) component, its preferred mixing amount is 0.05 to 1.5% of the entire composition, and 0.2 to 1% is particularly preferred. When the (E-2) component is mixed, its preferred mixing amount is 0.05 to 2% of the entire composition, and 0.2 to 1.5% is particularly preferred.

[0098] In addition, in the present invention, an organic binder other than component (E) (component (E-1), (E-2)) may be further added. Examples of the organic binder include alginic acid derivatives, polyethylene glycol with an average molecular weight of 200,000 or more (average molecular weight as described in the Specifications for Quasi-drug Raw Materials 2006), polyvinyl alcohol, etc. When any of these organic binders are mixed, they may be mixed within a range in which the total amount with component (E) does not exceed 3% and does not hinder the effects of the present invention. Any organic binder may not be mixed.

[0099] The dentifrice composition of the present invention can be formulated into a toothpaste. In addition, in addition to the above-mentioned ingredients, any ingredients can be mixed as needed, and known ingredients other than the above-mentioned can be mixed within the scope that does not hinder the effect of the present invention. For example, in addition to mixing (A), (B) and (C) components, in toothpaste, silicate-based abrasives other than silicon dioxide, wetting agents other than (D) components, and surfactants can be mixed, and sweeteners, preservatives, spices, and active ingredients can be further mixed as needed. In addition, in a dentifrice base that does not contain colored particles, a colorant may not be mixed.

[0100] The preparation method can be obtained by mixing the mixed components with a solvent such as water by a common method, or by dispersing and mixing the (A) colored particles in a dentifrice base mixed with components other than the (A) component according to a common method.

[0101] The grinding agent may include the above-mentioned silicates such as zeolite. The mixing amount thereof is preferably less than 5% of the entire composition, or it may be not mixed (mixing amount is 0%). As a grinding agent, calcium carbonate or calcium phosphate other than silicates may have a negative impact on the effect of the present invention, so it is preferable not to mix.

[0102] The wetting agent may include substances other than component (D), such as xylitol, erythritol, polyethylene glycol and propylene glycol with an average molecular weight of 160 to 400 (average molecular weight recorded in the Standards for Quasi-drug Raw Materials 2006). The mixing amount of the wetting agent other than component (D) is 0 to 8% of the entire composition, and 0 to 5% is particularly preferred. In addition, component (D) of the present invention also functions as a wetting agent.

[0103] Examples of surfactants include anionic surfactants such as sodium lauryl sulfate, which are commonly used in dentifrices, nonionic surfactants such as polyoxyethylene hydrogenated castor oil, amphoteric surfactants such as betaine-type fatty acid amide propyl betaine, and cationic surfactants. The amount of surfactants used is usually 0.001 to 10%, particularly 0.1 to 5%, of the entire composition.

[0104] Examples of the sweetener include sodium saccharin, and examples of the preservative include p-hydroxybenzoic acid esters, benzoic acid or salts thereof.

[0105] As the flavor, known flavors for toothpaste can be used. For example, peppermint oil, spearmint oil, fennel oil, eucalyptus oil, wintergreen oil, cinnamon oil, clove oil, thyme oil, sage oil, lemon oil, orange oil, peppermint oil (ハツカ oil), cardamom oil, coriander oil, orange peel oil, lime oil, lavender oil, rosemary oil, laurel oil, chamomile oil, caraway oil, marjoram oil, bay leaf oil, lemongrass oil, oregano oil, pine needle oil, neroli oil, rose oil, jasmine oil, grapeseed oil, thyme oil, thyme oil, cinnamon oil, thyme ... Natural flavors such as grapefruit oil, platinum grapefruit oil (suiti oil), grapefruit oil, iris extract, peppermint absolute oil, rose absolute oil, orange blossom, etc.; and flavors obtained by processing these natural flavors (extraction of primary fractions, removal of secondary fractions, fractionation, liquid-liquid extraction, rectification, flavor powderization, etc.); and menthol, carvone, anethole, eucalyptol, methyl salicylate, cinnamaldehyde, eugenol, 3-1-menthoxypropane-1,2 The present invention also includes single product flavors such as linalool, thymol, linalool, linalyl acetate, limonene, menthone, menthyl acetate, N-substituted-p-menthane-3-carboxamide, pinene, octanal, citral, pulegone, carvyl acetate, anisaldehyde, ethyl acetate, ethyl butyrate, allyl cyclohexylpropionate, methyl anthranilate, ethyl methylphenyl glycidyl propionate, vanillin, undecanolide, hexanal, butanol, isopentanol, hexenol, dimethyl sulfide, methylcyclopentenol ketone, furfural, trimethylpyrazine, ethyl lactate, ethyl thioacetate, etc.; and well-known flavor raw materials such as strawberry flavor, apple flavor, banana flavor, pineapple flavor, grape flavor, mango flavor, butter flavor, milk flavor, mixed fruit flavor, tropical fruit flavor, etc. are used in combination, and are not limited to the flavors described in the examples.

[0106] The amount of the fragrance blended is not particularly limited, but the fragrance raw material is preferably used at 0.000001 to 1% in the composition, and the fragrance for aromatization using the fragrance raw material is preferably used at 0.000001 to 2%, particularly preferably 0.1 to 2%.

[0107] The active ingredients may be known medicinal ingredients used in dentifrices, such as bactericides, anti-inflammatory agents, enzymes, fluorine-containing compounds such as sodium fluoride and sodium monofluorophosphate; condensed phosphates such as pyrophosphate and tripolyphosphate, plant extracts, tartar inhibitors, and plaque inhibitors, and may be mixed in effective amounts within a range that does not hinder the effects of the present invention.

[0108] The solvent is preferably water, and the water content in the dentifrice composition is preferably 20 to 50%.

[0109] The dentifrice composition of the present invention preferably has a translucent dentifrice base, and the (A) colored particles are preferably mixed in the translucent dentifrice base. In particular, the dentifrice base not including the (A) component (the composition after removing the (A) component from the dentifrice composition) is more preferably translucent satisfying at least (2) of the following conditions, and particularly preferably translucent satisfying two or more of the following conditions.

[0110] Three black lines of about 1 mm width were drawn on white paper at intervals of 2 mm. The dentifrice composition was squeezed out of the storage container and placed on the lines so that the dentifrice composition straddled the black lines. The appearance of the lines when observed with the naked eye from directly above was:

[0111] (1) When the thickness of the dentifrice composition extruded onto white paper is less than 4 mm, particularly 3 mm or less, the line is clearly seen.

[0112] (2) When the thickness of the dentifrice composition is 4 mm or more and 9 mm or less, the line is vaguely seen.

[0113] (3) When the thickness of the dentifrice composition exceeds 9 mm, particularly when it is 10 mm or more, the line cannot be seen.

[0114] The above-mentioned dentifrice composition, especially the properties of the dentifrice base, can be obtained by combining components (B), (C) and (D), preferably by adjusting the blending amounts of components (C) and (D) to the above-mentioned ranges.

[0115] Furthermore, water-insoluble particles other than the components (A), (B), and (C) or wetting agents other than the component (D) may be mixed within a range that does not impair the above properties.

[0116] Example

[0117] The present invention is specifically described below with reference to Examples, Comparative Examples, and Prescription Examples, but the present invention is not limited to the following Examples. In the following examples, % is mass %.

[0118] [Examples, Comparative Examples]

[0119] The dentifrice compositions of the compositions shown in Tables 1 to 4 were prepared according to conventional methods, and the appearance of the preparations was evaluated by the following method. The results are summarized in Tables 1 to 4. In addition, the dentifrice compositions of Examples and Comparative Examples 1 and 2 are all translucent dentifrice bases satisfying the following conditions, and the colored particles are dispersed and mixed in the dentifrice base. The dentifrice composition of Comparative Example 3 is transparent, while the dentifrice composition of Comparative Example 4 is not transparent.

[0120] Three black lines of about 1 mm width were drawn on white paper at intervals of 2 mm, and a dentifrice composition was squeezed out from a storage container to a thickness of 4 to 9 mm and placed on the lines so that the dentifrice composition straddled the black lines. The dentifrice composition that looked blurry when observed with the naked eye from directly above was translucent.

[0121] Evaluation method of preparation appearance (uniformity of colored particles, color vividness)

[0122] The sensory evaluation of the dentifrice composition was performed using 10 professional panelists as subjects.

[0123] The dentifrice composition filled in the laminate tube was squeezed out to 1 cm and placed on a toothbrush. The appearance was visually checked, and the uniformity of the colored particles and the vividness of the color of the colored particles were judged according to the following scoring criteria, and the average values ​​of each were obtained and evaluated according to the following evaluation criteria. Compositions that ensured the evaluation of ◎ and ○ were judged to be qualified.

[0124] The uniformity of the colored particles refers to the appearance that the colored particles are uniformly dispersed and scattered throughout the dentifrice base of the formulation. The vividness of the color of the colored particles refers to the appearance that the color of the colored particles is vivid and stands out.

[0125] Uniformity of coloring particles

[0126] Rating Criteria:

[0127] 4 points: Colored particles appear to be evenly scattered.

[0128] 3 points: Colored particles appear to be scattered approximately evenly.

[0129] 2 points: Colored particles appear to be slightly unevenly scattered.

[0130] 1 point: Colored particles appear to be scattered unevenly.

[0131] Rating Criteria:

[0132] ◎: Average score 3.5 or above and 4.0 or below

[0133] ○: Average score 3.0 or above, less than 3.5

[0134] △: Average score is 2.0 or more, but less than 3.0

[0135] ×: Average score is 1.0 or higher but less than 2.0

[0136] The vividness of the color of the colored particles

[0137] Rating Criteria:

[0138] 4 points: The coloring particles are very vivid and look very prominent.

[0139] 3 points: The coloring particles are slightly bright and appear to stand out.

[0140] 2 points: The coloring particles are slightly dull and the color does not seem to stand out.

[0141] 1 point: The coloring particles are dull and the color does not appear to stand out.

[0142] Rating Criteria:

[0143] ◎: Average score 3.5 or above and 4.0 or below

[0144] ○: Average score 3.0 or above, less than 3.5

[0145] △: Average score is 2.0 or more, but less than 3.0

[0146] ×: Average score is 1.0 or higher but less than 2.0

[0147] Details of the raw materials used are shown below.

[0148] (A)Ingredients

[0149] Red silica particles;

[0150] Colored silica particles manufactured by PQ (trade name: Sorbosil BFG54, red silica particles, pigment: CI Pigment Red 181, average particle size 350 μm (based on mass, 50% particle size calculated by sieving based on JIS sieve))

[0151] Blue silica particles;

[0152] Colored silica particles manufactured by PQ (trade name: Sorbosil BFG51, blue silica particles, pigment: CI Pigment Blue 15:1, average particle size 350 μm (based on mass, 50% particle size calculated by sieving based on JIS sieve))

[0153] Green silica particles;

[0154] Colored silica particles manufactured by PQ (trade name: Sorbosil BFG52, green silica particles, pigment: CI Pigment Green 7, average particle size 350 μm (based on mass, 50% particle size calculated by sieving based on JIS sieve))

[0155] Uncolored silica particles (comparative ingredient);

[0156] Uncolored silica particles manufactured by PQ Corporation (trade name: Sorbosil BFG50, uncolored silica particles, average particle size 350 μm (based on mass, 50% particle size calculated by sieving based on JIS sieve))

[0157] (B) Ingredients

[0158] Silicic anhydride B1;

[0159] Abrasive silica manufactured by Huber, trade name: Zeodent 103, average particle size 10 μm

[0160] Silicic anhydride B2;

[0161] Thickening silica manufactured by Huber, trade name: Zeodent 165, average particle size 12 μm

[0162] (C) Ingredients

[0163] Mica Titanium;

[0164] Trade name: Timiron MP-115, manufactured by Merck KGaA, average particle size 100 μm (D50, volume basis, measured by laser scattering measurement)

[0165] Titanium oxide (comparative ingredient):

[0166] Trade name: Titanium oxide, manufactured by Ishihara Sangyo Co., Ltd., average particle size 0.25 μm (D50, volume basis, measured by laser scattering measurement method)

[0167] (D) Ingredients

[0168] Sorbitol:

[0169] Trade name: NEOSORB, manufactured by Rocket Co., Ltd. (70% sorbitol, the values ​​indicating the mixed amounts in the table are pure component amounts)

[0170] Glycerol:

[0171] Trade name: Glycerol, manufactured by Sakamoto Pharmaceutical Industry Co., Ltd. (85% glycerol, the values ​​indicating the mixed amounts in the table are pure component amounts)

[0172] (E) Ingredients

[0173] (E-1) Ingredients

[0174] Sodium polyacrylate; Trade name: Rheogic, cross-linked type, manufactured by Toagosei Co., Ltd.

[0175] (E-2) Ingredients

[0176] Xanthan Gum:

[0177] Product name: KELDENT, manufactured by CP Kelco

[0178] Spice A

[0179] Givaudan, Sakura Mint Fragrance

[0180] Spice B

[0181] Rose mint flavor essence manufactured by Takasago Flavor Industry Co., Ltd.

[0182] [Table 1]

[0183]

[0184] [Table 2]

[0185]

[0186] [Table 3]

[0187]

[0188] [Table 4]

[0189]

[0190] The following are formulation examples. When the dentifrice compositions having the compositions shown in Table 5 were prepared in the same manner as described above and evaluated in the same manner, the uniformity of the colored particles and the vividness of the colors were excellent.

[0191] [Table 5]

[0192]

Claims

1. A dentifrice composition, characterized in that The invention comprises (A) colored silica particles colored with a red, blue or green pigment, (B) silica, (C) titanium mica, (D) one or two selected from sorbitol and glycerol, and (E) components (E-1) and (E-2). (E-1): sodium polyacrylate; (E-2): Xanthan gum, The content of the component (A) is 0.01 to 2% by mass, the content of the component (C) is 0.01 to 2% by mass, and the content of the component (D) is 5 to 40% by mass. The dentifrice base excluding the component (A) is translucent.

2. The dentifrice composition according to claim 1, wherein The component (A) is colored particles having an average particle size of 150 to 800 μm.

3. The dentifrice composition according to claim 1 or 2, wherein The component (B) is silica selected from abrasive silica and thickening silica.

4. The dentifrice composition according to claim 1 or 2, wherein The dentifrice composition contains 5 to 40% by mass of the component (B), 0.05 to 1% by mass of the component (C), and 10 to 35% by mass of the component (D).

5. The dentifrice composition according to claim 1 or 2, wherein The dentifrice composition contains 0.1 to 3.5% by mass of the component (E).

6. The dentifrice composition according to claim 1, wherein The dentifrice composition is a dentifrice composition in which (A) colored particles are dispersed and mixed in a translucent dentifrice base, and the translucent dentifrice base satisfies (2) of the following conditions: Three 1 mm wide black lines were drawn on white paper at intervals of 2 mm, and the dentifrice composition was squeezed out of the storage container and placed on the lines so that the dentifrice composition straddled the black lines. The appearance of the lines when observed with the naked eye from directly above was: (1) When the thickness of the dentifrice composition extruded on white paper is less than 4 mm, the line is clearly seen, (2) When the thickness of the dentifrice composition is 4 mm or more and 9 mm or less, the line is vaguely seen. (3) When the thickness of the dentifrice composition exceeds 9 mm, no line can be seen.

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