JP2014037444A - Dentifrice composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dentifrice composition having an astringent real feeling derived from organic acid or a salt thereof, almost no liquid separation after a long period of storage, good formability, less threading property, and excellent usability.SOLUTION: The dentifrice composition contains (A) phytic acid and/or a salt thereof, (B) xanthane gum, and (C) sodium carboxymethyl cellulose, wherein the mass ratio of (B)/(A) is 0.3 to 2.0, the mass ratio of (C)/(B) is 0.2 to 5.0, and the pH at 25°C is 5.5 to 6.5. Alternatively, the dentifrice composition contains (A) organic acid selected from malic acid and tartaric acid and/or a salt thereof, and the (B) and (C) components, wherein the mass ratio of (B)/(A) is 0.3 to 2.0, the mass ratio of (C)/(B) is 0.2 to 3.0, and the pH at 25°C is 5.5 to 6.5. The dentifrice composition has an astringent real feeling derived from organic acid or a salt thereof, almost no liquid separation after a long period of storage, good formability, and less threading property. The dentifrice composition exhibits a favorable and moderate astringent real feeling in terms of compatibility with a flavor added to the dentifrice composition and giving a functional feeling and can be converted to a pharmaceutical preparation making the best use of the astringent real feeling.

Description

  The present invention relates to a dentifrice composition having an astringent actuality derived from an organic acid, having no liquid separation after long-term storage, excellent storage stability, good moldability, low spinnability and excellent usability.

  In general, an organic acid or a salt thereof may be added to a dentifrice composition for the purpose of pH adjustment. Among organic acids, organic acids such as gluconic acid, malic acid, tartaric acid, phytic acid or their salts have astringent taste with a mild acidity and a refreshing acidity, and this astringent taste is from the viewpoint of the palatability of the dentifrice composition. Although it may be a defect, it is possible to make a formulation by taking advantage of this astringent feeling from the viewpoint of compatibility with the flavor imparted to the dentifrice composition and imparting a functional feeling. In this case, it is possible to cause the dentifrice composition to exhibit an appropriate convergence feeling by containing an organic acid or a salt thereof and adjusting the pH to the acidic side region.

  However, when an organic acid or salt thereof is mixed with the dentifrice composition and the pH is adjusted to the acidic side region, liquid separation occurs due to long-term storage, and the moldability of the kneading is inferior and it drops when placed on a toothbrush. There was a disadvantage that it was inferior in usability.

As described above, the conventional technology has a sense of convergence derived from an organic acid, and it has been difficult to satisfy all of excellent storage stability, moldability and usability.
In addition, the following literature is mentioned as a prior art relevant to this invention.

JP 2002-047157 A JP 2002-047161 A Special Table 2002-53387 JP 2005-298498 A JP 2006-511533 A

  Then, when this inventor examined in order to solve the said subject, many binders (binding agent) used for a dentifrice composition lose the power to hold | maintain water in an acidic side area | region, and it is comparatively comparative also among binders. By adding xanthan gum that is not easily affected by acid and pH, liquid separation after long-term storage is eliminated, but moldability remains unimproved, and by using xanthan gum, kneading stringiness As a result, the area around the cap of the container is likely to become dirty when it is placed on a toothbrush, and the cap is poorly tightened, resulting in a new problem of reduced usability.

  The present invention has been made in view of the above circumstances, has an astringent realization derived from an organic acid or a salt thereof, has no liquid separation after long-term storage, has good moldability, has little spinnability, and excellent usability. It is an object of the present invention to provide a dentifrice composition.

  As a result of intensive research to achieve the above object, the present inventor blended (A) an organic acid selected from malic acid, tartaric acid and phytic acid and / or a salt thereof, and adjusted the pH of the composition at 25 ° C. It adjusts to 5.5-6.5, (B) xanthan gum is contained in the range whose mass ratio of (B) / (A) is 0.3-2.0, and also (C) sodium carboxymethylcellulose (C) ) / (B) is contained in the range of 0.2 to 5.0, surprisingly, the dentifrice composition having an acidic side region with an organic acid and / or a salt thereof. Can solve all the problems such as liquid separation after long-term storage, moldability of kneading and spinnability at the same time, and has a proper convergence feeling derived from organic acid and / or its salt, and there is no liquid separation after long-term storage Also, dripping or rolling when placed on a toothbrush Tondo no moldability is good, and then found that excellent dentifrice composition good usability of breakage kneading less spinnability is obtained, leading to completion of the present invention.

  According to the present invention, by having the above-described configuration, it is suitable from the viewpoint of imparting taste and functional feeling with a refreshing sourness derived from an organic acid, and provides a converging feeling that tightens the gums, and excellent storage stability. From the viewpoint of compatibility with flavor and functional feeling imparted to such a dentifrice composition, it is possible to combine all of moldability and usability, and a suitable astringent feeling is expressed, and the preparation is made use of this astringent feeling. It is possible to

  In Example 2 of Patent Document 1, a composition containing phytate, xanthan gum and sodium carboxymethylcellulose is described. In Example 2 of Patent Document 2, a composition containing sodium phytate, sodium carboxymethylcellulose and xanthan gum is described. However, the pH of the composition is 7 or more because sodium bicarbonate and sodium pyrophosphate are blended, and a sense of convergence cannot be obtained. Further, Example 1 of Patent Document 3 is a composition in which sodium gluconate, xanthan gum and sodium carboxymethylcellulose are blended. Example 7 in Patent Document 4 is a composition in which malic acid, xanthan gum and sodium carboxymethylcellulose are blended, Patent Document 5 In Example B, a composition containing sodium gluconate, xanthan gum, and sodium carboxymethyl cellulose is described, but since the ratio of xanthan gum to organic acid salt is small, the problem of liquid separation remains unsolved.

Accordingly, the present invention provides the following dentifrice composition.
Claim 1:
(A) Phytic acid and / or a salt thereof, (B) xanthan gum, and (C) sodium carboxymethylcellulose, and (B) / (A) has a mass ratio of 0.3 to 2.0, (C ) / (B) mass ratio is 0.2 to 5.0 and pH at 25 ° C. is 5.5 to 6.5.
Claim 2:
(A) An organic acid selected from malic acid and tartaric acid and / or a salt thereof, (B) xanthan gum, and (C) sodium carboxymethylcellulose, and a mass ratio of (B) / (A) is 0.3. A dentifrice composition having a mass ratio of .about.2.0, (C) / (B) of 0.2 to 3.0, and a pH at 25.degree. C. of 5.5 to 6.5.
Claim 3:
The dentifrice composition of Claim 1 or 2 which contains 0.1-3 mass% of (A) component, 0.1-3 mass% of (B) component, and 0.1-3 mass% of (C) component. object.
Claim 4:
The component (A) contains 0.2 to 2% by mass, the component (B) 0.2 to 2% by mass, the component (C) 0.2 to 2% by mass, and (B) / ( A) is 0.5 to 1.6, (C) / (B) is 0.5 to 3.0, and pH at 25 ° C is 5.8 to 6.2. The dentifrice composition described.
Claim 5:
The dentifrice composition according to any one of claims 1 to 4, wherein the viscosity of (B) xanthan gum at 25 ° C is 600 to 2,500 mPa · s.
Claim 6:
(C) The dentifrice composition according to any one of claims 1 to 5, wherein sodium carboxymethylcellulose has a viscosity at 20 ° C of 15 to 3,000 mPa · s.
Claim 7:
The dentifrice composition according to any one of claims 1 to 6, which is a toothpaste composition.

  The dentifrice composition of the present invention has an astringent actuality derived from an organic acid or a salt thereof, has almost no liquid separation after long-term storage, has good moldability, and has little spinnability. From the viewpoint of compatibility with the flavor imparted to the product and imparting a functional feeling, it is possible to develop a suitable moderate feeling of convergence and to make a formulation utilizing this feeling of convergence.

  Hereinafter, the present invention will be described in more detail. The dentifrice composition of the present invention comprises (A) an organic acid selected from gluconic acid, malic acid, tartaric acid, and phytic acid, and / or a salt thereof, (B) xanthan gum, and (C) sodium carboxymethylcellulose. It is contained in a proportion, and the pH at 25 ° C. is adjusted to 5.5 to 6.5.

In the present invention, an organic acid and / or a salt thereof is blended for the purpose of imparting a sense of convergence to the dentifrice composition. As an organic acid, 1 type, or 2 or more types chosen from gluconic acid, malic acid, tartaric acid, and phytic acid are mix | blended. Examples of these organic acid salts include alkali metal salts such as sodium and alkaline earth metal salts such as calcium.
Specific examples of organic acids and salts thereof include gluconic acid, sodium gluconate, calcium gluconate, malic acid, sodium malate, calcium malate, tartaric acid, sodium tartrate, calcium tartrate, phytic acid, sodium phytate, etc. Is done. Among these, gluconic acid, malic acid, and a salt thereof are more preferable from the viewpoint that a satisfactory astringency can be obtained.
Commercial products such as those manufactured by Fuso Chemical Industry Co., Ltd. can be used as the organic acid and its salt.

  As the component (A), one kind selected from the above-mentioned organic acids and salts thereof can be used alone or in combination of two or more kinds, and the blending amount is the entire composition from the viewpoint of convergence feeling and liquid separation. 0.1 to 3% by mass, particularly 0.2 to 2% by mass, and particularly 0.5 to 2% by mass is preferable. If the amount is less than 0.1% by mass, a satisfactory converging feeling may not be obtained. If the amount exceeds 3% by mass, liquid separation may occur after storage even if xanthan gum is blended.

  The xanthan gum as the component (B) may be any as long as it is usually used in a dentifrice composition, but 25 when xanthan gum is dissolved in a 1% by mass potassium chloride solution to 1% by mass. Those having a viscosity at 600 ° C. of 600 to 2,500 mPa · s, particularly 1,000 to 2,000 mPa · s are preferred. The viscosity is a value measured at 25 ° C. using a B-type viscometer. Further, as xanthan gum, those having reduced cellulase activity are more preferable in that they are used in combination with sodium carboxymethylcellulose. What reduced cellulase activity is what was manufactured so that mixing of a cellulase might be suppressed at the time of manufacture of a xanthan gum.

  Examples of such xanthan gum include Novazan manufactured by ADM Far East Co., Ltd., Monato Gum DA manufactured by Kelco Co., Ltd., Kelzan T, Keldent, and Echo Gum manufactured by Dainippon Pharmaceutical Co., Ltd. Examples of xanthan gum with reduced cellulase activity include CP Kelco Keldent.

  The blending amount of xanthan gum is preferably from 0.1 to 3% by mass, particularly from 0.2 to 2% by mass, especially from 0.4 to 1.5% by mass, based on the whole composition, from the viewpoint of liquid separation and spinnability. If it is less than 0.1% by mass, the liquid separation may not be improved. If it exceeds 3% by mass, the spinnability may not be improved even if sodium carboxymethylcellulose is contained.

The mass ratio ((B) / (A)) between the component (B) and the component (A) is 0.3 to 2.0 from the viewpoint of liquid separation, spinnability and moldability, and preferably is 0.00. 5 to 1.6. If it is less than 0.3, the liquid separation after storage cannot be improved, and if it exceeds 2.0, the spinnability and moldability cannot be improved even if sodium carboxymethylcellulose is contained.

  Component (C) Sodium carboxymethylcellulose is produced by introducing a carboxymethyl group into the hydroxyl group of cellulose. By changing the degree of substitution (degree of etherification), sodium carboxymethylcellulose having various characteristics can be obtained. Although produced, the degree of etherification (DS) is preferably 0.5 to 1.5. Moreover, carboxymethylcellulose sodium having various viscosities is produced by changing the degree of polymerization, but a 2% by weight aqueous solution having a viscosity of 15 to 3,000 mPa · s, particularly 600 to 1,200 mPa · s is preferable. It is. The viscosity is a value measured at 20 ° C. using a B-type viscometer. As carboxymethylcellulose sodium, commercially available products such as CMC Daicel (trade name) manufactured by Daicel Chemical Industries, Ltd. can be used.

  The amount of sodium carboxymethylcellulose is 0.1 to 3% by mass, more preferably 0.2 to 2% by mass, and still more preferably 0, in terms of spinnability, moldability, and liquid separation. .3 to 1.5% by mass. If it is less than 0.1% by mass, the liquid separation after storage and the spinnability may not be improved, and if it exceeds 3% by mass, the moldability may be inferior.

  The mass ratio ((C) / (B)) of sodium carboxymethylcellulose and xanthan gum is 0.2 to 5.0, preferably 0.5 to 3. in terms of moldability, spinnability and liquid separation. 0. If it is less than 0.2, moldability and spinnability cannot be improved, and if it exceeds 5.0, liquid separation after storage cannot be improved, and moldability is poor.

  In the present invention, in order to give a sense of convergence, the organic acid of the component (A) or a salt thereof is blended, and the pH of the composition at 5.5C is 5.5 to 6.5, preferably 5.8 to 6. 2 is required. If the pH is less than 5.5, liquid separation and moldability after storage cannot be improved even if xanthan gum is blended, and if it exceeds 6.5, a convergent feeling derived from an organic acid cannot be obtained satisfactorily.

  In addition, the said pH can be measured using the electrode of a normal hydrogen ion meter, and is a value obtained by immersing an electrode in a composition and leaving it still and reading the value after 3 minutes. In order to adjust to a predetermined pH, the organic acid of the component (A) or a salt thereof may be appropriately combined or the blending amount may be adjusted. If necessary, other organic acids, alkalis such as sodium hydroxide, inorganics such as hydrochloric acid, etc. You may adjust by adding an acid.

  In the dentifrice composition of the present invention, in addition to the components described above, various known components that are usually used in dentifrice compositions can be blended within a range not impairing the effects of the present invention. Components that can be blended include cleaning agents, surfactants, thickeners, binders, various active ingredients, colorants (pigments), sweeteners, fragrances, pH adjusters, preservatives, and the like.

  As cleaning agents (abrasives), silica-based abrasives such as silica gel, precipitated silica, aluminosilicate, zirconosilicate, calcium pyrophosphate, calcium carbonate, aluminum hydroxide, alumina, magnesium carbonate, tribasic magnesium phosphate, zeolite, Examples thereof include zirconium silicate, hydroxyapatite, and a synthetic resin abrasive. The blending amount of these cleaning agents is preferably 10 to 60% by mass, particularly 10 to 20% by mass, based on the total composition.

As the surfactant, an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant can be blended.
Examples of the anionic surfactant include sodium alkyl sulfates such as sodium lauryl sulfate and sodium myristyl sulfate, sodium N-acyl sarcosine such as sodium N-lauroyl sarcosine, sodium N-myristol sarcosine, and dodecylbenzene sulfonic acid. Sodium, hydrogenated coconut fatty acid monoglyceride sodium monosulfate, sodium lauryl sulfoacetate, sodium α-olefin sulfonate, N-acyl glutamate such as sodium N-palmitoyl glutamate, N- such as sodium N-methyl-N-acyl taurate Examples include acyl taurate. Examples of the cationic surfactant include alkyl ammonium and alkyl benzyl ammonium salts.

Nonionic surfactants include sugar fatty acid esters such as sucrose fatty acid ester and maltose fatty acid ester, sugar alcohol fatty acid esters such as maltitol fatty acid ester and lactol fatty acid ester, alkylol amide, polyoxyethylene sorbitan monostearate, etc. Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester such as polyoxyethylene hydrogenated castor oil, fatty acid diethanolamide such as lauric acid mono- or diethanolamide, sorbitan fatty acid ester, polyoxyethylene higher alcohol ether, polyoxyethylene polyoxy Examples include propylene copolymers, polyoxyethylene polyoxypropylene fatty acid esters, polyglycerin fatty acid esters, and pluronics.
Examples of zwitterionic surfactants include 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolium betaine, N-lauryl diaminoethyl glycine, N-alkyl diaminoethyl glycine such as N-myristyl diaminoethyl glycine, and N-alkyl. -1-hydroxyethyl imidazoline betaine sodium etc. are mentioned.

  These surfactants may be used individually by 1 type, or may use 2 or more types together, and the compounding quantity is 0.1 to 3 mass% of the whole composition.

  As the thickener, sorbitol, glycerin, propylene glycol, pentylene glycol, hexylene glycol, octylene glycol, xylitol, erythritol, polyethylene glycol having an average molecular weight of 200 to 6,000, ethylene glycol, 1,3-butylene glycol, 1 type (s) or 2 or more types, such as polyhydric alcohols, such as reduced starch saccharified material, can be mix | blended. A compounding quantity is 5-70 mass% of the whole composition normally.

  As the binder, other than xanthan gum and sodium carboxymethylcellulose can be blended as long as the effects of the present invention are not hindered. Examples include cellulose binders such as hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxymethylethylcellulose, methylcellulose, carrageenan, guar gum, sodium alginate, cationized cellulose, montmorillonite, gelatin, sodium polyacrylate, etc. 1 type, or 2 or more types can be mix | blended. The addition amount of these binders is usually 0 to 0.5% by mass of the whole composition, and the total blending amount including the content of xanthan gum and sodium carboxymethylcellulose is 0.2 to 3.5% by mass in the composition. This range is desirable.

  Examples of the colorant include legal pigments such as Blue No. 1, Yellow No. 4, and Green No. 3, natural pigments such as caramel, and titanium oxide. The compounding quantity of a coloring agent can be 0.000001-0.1 mass% of the whole composition.

  Examples of sweeteners include saccharin sodium, stevioside, stevia extract, paramethoxycinnamic aldehyde, neohesperidyl dihydrochalcone, perlartin, glycyrrhizin, thaumatin, asparatylphenylalanine methyl ester, and the compounding amount is usually 0 of the entire composition. 0.01 to 5% by mass.

  As a fragrance, menthol, anethole, carvone, eugenol, limonene, n-decyl alcohol, citronellol, α-terpineol, citronellyl acetate, cineol, linalool, ethyl linalool, crocodile, thymol, spearmint oil, peppermint oil, lemon oil, orange Oil, sage oil, rosemary oil, cinnamon oil, pimento oil, cinnamon leaf oil, perilla oil, winter green oil, clove oil, eucalyptus oil and the like. The compounding quantity of a fragrance | flavor is 0.001-2 mass% of the whole composition normally.

  As a pH adjuster, a water-soluble and buffering agent other than the organic acid and salt thereof as component (A) may be blended as long as the effects of the present invention are not hindered. Examples thereof include organic acids such as citric acid, lactic acid, and succinic acid or salts thereof, and inorganic compounds such as hydrochloric acid, sodium hydroxide, potassium hydroxide, disodium hydrogen phosphate, and sodium dihydrogen phosphate. These pH adjusters do not need to be blended as long as the pH of the composition can be adjusted to a desired value, but the amount added is usually 0.01 to 5% by mass of the total composition.

  In the composition of the present invention, as a medicinal ingredient or an active ingredient, enzymes such as dextranase, amylase, protease, mutanase, alkali metal monofluorophosphates such as sodium monofluorophosphate, sodium fluoride, stannous fluoride Such as fluoride, tranexamic acid, epsilon aminocaproic acid, aluminum chlorohydroxy allantoin, azulene, glycyrrhizinate, glycyrrhetinic acid, sodium chloride, vitamins and other anti-inflammatory agents, copper chlorophyll, cetylpyridinium chloride, benzalkonium chloride, triclosan Furthermore, bactericides such as hinokitiol and lysozyme chloride, tartar preventives such as polyphosphates, tobacco spider removers such as polyvinylpyrrolidone, and amino acids such as glycine and proline can be added. The blending amount can be an effective amount as long as the effects of the present invention are not hindered.

  The material in particular of the container which accommodates the dentifrice composition of this invention is not restrict | limited, Usually, the container used for a dentifrice composition can be used. Specifically, plastic containers such as polyethylene, polypropylene, polyethylene terephthalate, and nylon can be used.

  EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example. In addition, in the following example,% shows the mass%, and the compounding quantity in a table | surface is the value converted into the pure part.

[Examples and Comparative Examples]
Test dentifrice compositions (toothpaste compositions) shown in Tables 1 to 3 were prepared by a conventional method, and the astringency when brushing, liquid separation after long-term storage, spinnability, and moldability were evaluated by the following methods. . The results are shown in Tables 1-3.

<A feeling of convergence>
Compared with Comparative Example 1, which is a composition containing no organic acid, using 10 subjects, taking about 1 g of the dentifrice composition of each composition into a toothbrush and feeling the convergence on the oral mucosa when brushing for 3 minutes It was judged according to the following criteria and evaluated according to the following criteria. Here, the “convergence actuality” means an actual feeling that the gums are tightened.

(Score)
1 point: Similar to Comparative Example 1, does not feel a sense of convergence. 2 points: Feels a little more convergent than Comparative Example 1. 3 points: Clearly feels a convergence compared to Comparative Example 1. 4 points: Compared to Comparative Example 1. Feel much stronger convergence (evaluation criteria)
◎: Average point 3 points or more ○: Average point 2 points or more and less than 3 points ×: Average point 2 points or less

<Liquid separation>
The test dentifrice composition was filled into a laminate tube having an aperture of 8 mm, stored in a thermostatic bath at 50 ° C. for 1 month, and then the separation state of the liquid from the kneading when extruded from the tube onto paper was evaluated.
(Evaluation criteria)
◎: No liquid separation is recognized ○: No liquid separation is observed, but gloss is observed as a sign of separation on the surface, but there is no problem △: Some liquid separation is observed ×: Liquid separation is clearly recognized

<Moldability>
Dentifrice composition from a toothbrush when a test dentifrice composition is filled into a laminated tube having an aperture of 8 mm and an appropriate amount is placed on a toothbrush (manufactured by Lion Corporation, Clinica Habrush 4 row head, medium) by 10 subjects. The presence or absence of dripping or rolling was evaluated according to the following criteria.
(Evaluation criteria)
◎: No dentifrice composition drooped or rolled down 0: Dentifrice composition drooped or rolled down 1 person △: Dentifrice composition drooped or rolled down There are 2 to 3 people. X: There are 4 to 10 people where the dentifrice composition hangs down or rolls off from the toothbrush.

<Spinning>
The test dentifrice composition was filled into a laminate tube having an aperture of 8 mm, and after about 1 g of the kneaded material was placed on the toothbrush from the tube, the kneading (threading property) when the tube and toothbrush were pulled upward was tested. The stringiness refers to the property that the dentifrice composition stretches as if it is pulled from the tube, and can be evaluated by measuring its length. The evaluation criteria are as follows.
(Evaluation criteria)
A: The spinnability is less than 0.5 cm, and the kneading is good. ○: The spinnability of 0.5 cm or more and less than 1 cm is recognized, but there is no problem in use. ×: The spinnability of 1 cm or more is recognized. There is a problem in use

＊ ：粘度１，４７０ｍＰａ・ｓ １質量％塩化カリウム水溶液にキサンタンガムを１質量％となるように溶かし、Ｂ型粘度計３号ローター、毎分６０回転で測定（２５℃、３０秒後の読み値）。
＊＊：ＤＳ化度０．９、粘度９７５ｍＰａ・ｓ 水にカルボキシメチルセルロースナトリウムを２質量％となるように溶かし、Ｂ型粘度計２号ローター、毎分２０回転で測定（２０℃、３分後の読み値）。

*: Viscosity: 1,470 mPa · s 1% by weight Xanthan gum dissolved in 1% by weight aqueous potassium chloride solution, measured with a B-type viscometer No. 3 rotor, 60 revolutions per minute (25 ° C, reading after 30 seconds) ).
**: DS degree 0.9, viscosity 975 mPa · s Dissolve sodium carboxymethylcellulose in water to 2 mass%, and measure with B-type viscometer No. 2 rotor, 20 revolutions per minute (20 ° C, after 3 minutes Readings).

  From the results of Tables 1 to 3, if the organic acid or the salt thereof as the component (A) is not contained, a satisfactory convergence feeling cannot be obtained (Comparative Example 1), and (B) / (A) is less than 0.3. And liquid separation after storage and inferior moldability (Comparative Examples 2 and 8). If it exceeds 2.0, the spinnability and moldability are inferior (Comparative Examples 3 and 9), and (C) / (B) is 0. If it is less than 2, the spinnability and moldability are poor (Comparative Examples 4 and 10). If it exceeds 5.0, the liquid separation after storage and the moldability are poor (Comparative Examples 5 and 11). Furthermore, when the pH at 25 ° C. is less than 5.5, the liquid separation after storage and the moldability are inferior (Comparative Examples 6 and 12), and when it exceeds 6.5, no satisfactory convergence feeling is obtained (Comparative Example). 7, 13). In contrast, the components (A) to (C) are contained, the ratio of (B) / (A) and (C) / (B) is appropriate, and the pH at 25 ° C. is 5.5 to 6 5 (Example), it was found that a dentifrice composition having excellent converging feeling, storage stability, spinnability, and moldability was obtained.

Claims (7)

  (A) Phytic acid and / or a salt thereof, (B) xanthan gum, and (C) sodium carboxymethylcellulose, and (B) / (A) has a mass ratio of 0.3 to 2.0, (C ) / (B) mass ratio is 0.2 to 5.0 and pH at 25 ° C. is 5.5 to 6.5.   (A) An organic acid selected from malic acid and tartaric acid and / or a salt thereof, (B) xanthan gum, and (C) sodium carboxymethylcellulose, and a mass ratio of (B) / (A) is 0.3. A dentifrice composition having a mass ratio of .about.2.0, (C) / (B) of 0.2 to 3.0, and a pH at 25.degree. C. of 5.5 to 6.5.   The dentifrice composition of Claim 1 or 2 which contains 0.1-3 mass% of (A) component, 0.1-3 mass% of (B) component, and 0.1-3 mass% of (C) component. object.   The component (A) contains 0.2 to 2% by mass, the component (B) 0.2 to 2% by mass, the component (C) 0.2 to 2% by mass, and (B) / ( A) is 0.5 to 1.6, (C) / (B) is 0.5 to 3.0, and pH at 25 ° C is 5.8 to 6.2. The dentifrice composition described.   The dentifrice composition according to any one of claims 1 to 4, wherein the viscosity of (B) xanthan gum at 25 ° C is 600 to 2,500 mPa · s.   (C) The dentifrice composition according to any one of claims 1 to 5, wherein sodium carboxymethylcellulose has a viscosity at 20 ° C of 15 to 3,000 mPa · s.   The dentifrice composition according to any one of claims 1 to 6, which is a toothpaste composition.