JP6422747B2 - Dentifrice composition - Google Patents

Description

  The present invention relates to a dentifrice composition.

  Salt is known to have the effect of improving circulation in the gingival area by absorbing tissue fluid in inflamed gums, and as a component that exerts preventive and therapeutic effects on periodontal diseases Therefore, various dentifrice compositions using the same have been developed.

  As a composition containing such salt, for example, Patent Document 1 discloses a toothpaste composition using a specific sodium carboxymethyl cellulose or a salt thereof, and attempts to suppress an increase in viscosity at low temperatures. Further, Patent Document 2 discloses a dentifrice composition using xanthan gum and sodium alginate and thickening silica, which enhances retention in the oral cavity in addition to the effect of imparting a firm feeling of gingiva.

  On the other hand, when sugar alcohol such as erythritol is included in the dentifrice composition, the refreshing feeling can be enhanced. For example, Patent Document 3 further includes erythritol having a specific particle diameter, a binder, and the like. A dentifrice composition is disclosed.

JP 2013-256464 A JP 2013-193967 A JP 2008-13528 A

  However, in the presence of a high content of sodium chloride, increasing the content of a binder such as carboxymethyl cellulose tends to increase the viscosity, particularly in a high temperature environment, and generally contains a dentifrice composition. Extrusion from the tube container may be difficult. In addition, sugar alcohols such as erythritol are recrystallized as the content thereof increases, and may cause a rough and unpleasant feel. Under these circumstances, there is a possibility that the recrystallization of the sugar alcohol cannot be sufficiently prevented even if the technique described in the above-mentioned patent document is adopted in order to sufficiently increase the content of the sugar alcohol such as erythritol together with the salt. In addition to this, there is a possibility that the viscosity increases at a high temperature and the dispersibility is lowered, and further improvement is required to maintain a good feeling of use.

  Therefore, the present invention relates to a dentifrice composition that ensures a good extrudability from a tube container even in a high-temperature environment and provides an excellent feeling of use while having a high content of both salt and sugar alcohol.

  Accordingly, the present inventors have made various studies, and by increasing the contents of salt and sugar alcohol while reducing the water content, and by containing glycerin, a binder, and thickening silica in specific amounts, the gingiva It was found that a dentifrice composition capable of ensuring good extrudability from a tube container even in a high-temperature environment while effectively enhancing both the tightening feeling and the refreshing feeling.

That is, the present invention includes the following components (A) to (F):
(A) Sodium chloride 5% by mass to 30% by mass (B) Glycerin 0.1% by mass to 5% by mass (C) Binder 0.05% by mass to 0.3% by mass (D) Water 10% by mass (E) One or two or more sugar alcohols selected from erythritol, mannitol, and reduced palatinose having a solubility in water at 20 ° C. of 40% by mass or less 15% by mass to 60% by mass ( F) A dentifrice composition containing 3% by mass or more and 7% by mass or less of thickening silica having an oil absorption of 200 to 400 mL / 100 g is provided.

  According to the dentifrice composition of the present invention, while ensuring a high content of both salt and sugar alcohol, it ensures good extrudability from a tube container even in a high temperature environment and imparts an excellent feeling of use. Can do.

Hereinafter, the present invention will be described in detail.
The dentifrice composition of this invention contains 5 mass% or more and 30 mass% or less of salt as a component (A). This makes it possible to allow the component (A) to be present in a high content while the component (D) has a low water content, which will be described later, so that the undissolved component (A) can be present in the composition. While presenting, the osmotic pressure is effectively increased in combination with the component (E) described later, and the tissue fluid in the inflamed gingiva can be effectively absorbed to enhance the tightening feeling. In addition, waste products in the gingiva can be discharged, and a good massage effect can be imparted to promote blood circulation in the gingiva. As the salt of the component (A), the dissolution in the oral cavity is allowed to proceed with the dissolution of the component (E) to be described later, and the viewpoint of suppressing the rapid increase in saltiness and good in the oral cavity. From the viewpoint of enhancing the massage effect while maintaining a good feel, the average particle size is preferably 300 μm or more, more preferably 500 μm or more, further preferably 700 μm or more, preferably 2000 μm or less, more preferably It is 1800 micrometers or less, More preferably, it is 1500 micrometers or less. In addition, the dentifrice composition obtained by mix | blending salt with an average particle diameter of the said range from a viewpoint which implement | achieves salt of a specific particle size in a composition is preferable.

The average particle size of the salt is measured as follows after drying to such an extent that a sieve can be used.
Sieve: JIS standard sieve φ75mm
Opening: From the upper stage, a receiver is provided under a sieve having openings of 2000 μm, 1700 μm, 1400 μm, 1000 μm, 850 μm, 710 μm, 600 μm, 500 μm, 425 μm, 355 μm, 300 μm, and 250 μm, respectively.
Shaker: Micro type electromagnetic vibrator M-2 type (Tsutsui Rikenki Co., Ltd.)
Method: Place 15 g of sample on a 2000 μm sieve and classify with an electromagnetic vibrator for 5 minutes. The sieving rate (cumulative mass) is plotted on normal probability paper, and the value corresponding to 50% is taken as the average particle size.

  The content of the component (A) is 5% by mass or more, preferably 8% by mass or more in the dentifrice composition of the present invention, from the viewpoint of effectively increasing the osmotic pressure and increasing the feeling of tightening. More preferably, it is 10 mass% or more. In addition, the content of the component (A) is 30% by mass or less, preferably 25% by mass in the dentifrice composition of the present invention, from the viewpoint of avoiding a salty taste and a decrease in feeling of use. Or less, more preferably 22% by mass or less. And content of a component (A) is 5 to 30 mass% in the dentifrice composition of this invention, Preferably it is 8 to 25 mass%, More preferably, it is 10 to 22 mass%. It is.

  The dentifrice composition of this invention contains 0.1 mass% or more and 5 mass% or less of glycerol as a component (B). Thereby, the component (A) having a high content while maintaining a good feeling of use by effectively suppressing recrystallization of the sugar alcohol of the component (E) described later and reducing the influence of temperature change. Pressing strength that depends on the viscosity increase in a high-temperature environment and the structural viscosity brought about by component (A) and component (E) due to the content of binder of component (C) and water of component (D) described later Can be effectively suppressed. In view of effectively suppressing recrystallization of the component (E), the content of the component (B) is 0.1% by mass or more in the dentifrice composition of the present invention, preferably 0.5%. It is at least 1% by mass, more preferably at least 1% by mass. Moreover, content of a component (B) is 5 mass% or less in the dentifrice composition of this invention from a viewpoint of exhibiting the inhibitory effect of a viscosity increase in a high temperature environment stably, Preferably it is 4. It is 5 mass% or less, More preferably, it is 4 mass% or less. And content of a component (B) is 0.1 to 5 mass% in the dentifrice composition of this invention, Preferably it is 0.5 to 4.5 mass%, More preferably Is 1-4% by mass.

  The dentifrice composition of this invention contains 0.05 mass% or more and 0.3 mass% or less of binder as a component (C). Thus, the water content of the component (D) described later has a low content and the salt content of the component (A) is a high content. The increase in viscosity can be effectively suppressed. Examples of the binder of component (C) include one or more selected from carboxymethylcellulose sodium, hydroxyethylcellulose, carboxyvinyl polymer, xanthan gum, carrageenan, sodium alginate, hydroxypropylcellulose, guar gum and sodium chondroitin sulfate. Can be mentioned. Among them, carboxyvinyl polymer, sodium carboxymethylcellulose, xanthan gum, and carrageenan are capable of maintaining an appropriate viscosity that tends to be difficult due to a high content of component (A) and imparting a good feeling of use. 1 type or 2 or more types selected from is preferable, and 1 type or 2 types selected from sodium carboxymethylcellulose and xanthan gum are more preferable.

  The content of the component (C) is 0.05% by mass or more, preferably 0.08% by mass or more, more preferably in the dentifrice composition of the present invention from the viewpoint of imparting an appropriate viscosity. Is 0.1% by mass or more. In addition, the content of the component (C) is 0.3% by mass or less, preferably 0.27% by mass in the dentifrice composition of the present invention, from the viewpoint of effectively suppressing an increase in viscosity under a high temperature environment. % Or less, and more preferably 0.25% by mass or less. And content of a component (C) is 0.05 to 0.3 mass% in the dentifrice composition of this invention, Preferably it is 0.08 to 0.27 mass%, More preferably, it is 0.1-0.25 mass%.

  The dentifrice composition of this invention contains 10 mass% or more and 30 mass% or less of water as a component (D). Thereby, the content of the sugar alcohol of the component (A) and the component (E) described later is increased by reducing the content of the component (D), and at least a part of the component (A) and the component (E) is powdered. It can be present in the composition in an undissolved state in the form or in a granular state, and it can effectively increase the osmotic pressure while giving an appropriate structural viscosity, thereby providing a good tightening feeling and a refreshing feeling.

The content of the component (D) is included in the dentifrice composition of the present invention from the viewpoint of ensuring good dispersibility of each component and good mouth meltability at the time of use, and from suppressing the increase in viscosity after high-temperature storage. It is 10% by mass or more, preferably 11% by mass or more, and more preferably 12% by mass or more. The content of the component (D) is such that an appropriate amount of the component (A) and the component (E) are present in the composition in an undissolved state in the form of powder or particles, and the granular component (A). And from the viewpoint of securing an appropriate pressing force from the tube container due to the presence of the component (E), it is 30% by mass or less in the dentifrice composition of the present invention, preferably 27% by mass or less, more preferably 25% by mass or less. And content of a component (D) is 10 to 30 mass% in the dentifrice composition of this invention, Preferably it is 11 to 27 mass%, More preferably, it is 12 to 25 mass%. It is.
In addition, although content of a component (D) can also be computed by calculation from the water content mix | blended and the water content in the mix | blended component, it can measure with a Karl Fischer moisture meter, for example. As the Karl Fischer moisture meter, for example, a trace moisture measuring device (Hiranuma Sangyo) can be used. In this apparatus, 5 g of the dentifrice composition is taken, suspended in 25 g of anhydrous methanol, 0.02 g of this suspension is taken, and the water content can be measured as the content of the component (D).

  The mass ratio of the component (A) to the component (D) ((A) / (D)) is a viewpoint in which the undissolved component (A) is effectively present in the composition to enhance the massage effect as well as the tightening feeling. Therefore, it is preferably 0.35 or more, more preferably 0.45 or more, and further preferably 0.5 or more. The mass ratio ((A) / (D)) of the component (A) to the component (D) is preferably 2.5 or less, more preferably 2.0 or less, from the viewpoint of exhibiting an appropriate salty taste. Yes, more preferably 1.7 or less. And mass ratio ((A) / (D)) of a component (A) and a component (D) becomes like this. Preferably it is 0.35-2.5, Preferably it is 0.45-2.0, Furthermore, Preferably it is 0.5-1.7.

  The mass ratio of the component (D) to the component (B) ((D) / (B)) is preferably 2 or more, more preferably 2.5 from the viewpoint of effectively suppressing an increase in viscosity under a high temperature environment. Or more, more preferably 3 or more. The mass ratio of component (D) to component (B) ((D) / (B)) is obtained by recrystallization of component (E) while ensuring good solubility or dispersibility of each component. From the viewpoint of effectively suppressing the growth and securing a good usability, it is preferably 30 or less, more preferably 27 or less, and even more preferably 25 or less. And mass ratio ((D) / (B)) of a component (D) and a component (B) becomes like this. Preferably it is 2-30, More preferably, it is 2.5-27, More preferably, it is 3-25 It is.

  The mass ratio of component (D) to component (C) ((D) / (C)) is preferably 50 or more from the viewpoint of effectively suppressing the increase in viscosity under a high temperature environment while imparting an appropriate viscosity. More preferably, it is 60 or more, More preferably, it is 70 or more. Further, the mass ratio ((D) / (C)) of the component (D) and the component (C) gives an appropriate viscosity while ensuring good solubility or dispersibility of each component, and maintains good retention. From the viewpoint of securing formability, it is preferably 250 or less, more preferably 220 or less, and even more preferably 190 or less. And mass ratio ((D) / (C)) of a component (D) and a component (C) becomes like this. Preferably it is 50-250, More preferably, it is 60-220, More preferably, it is 70-190. .

  The dentifrice composition of the present invention contains, as component (E), 15% by mass of one or more sugar alcohols selected from erythritol, mannitol, and reduced palatinose having a solubility in water at 20 ° C. of 40% by mass or less. More than 60 mass% is contained. That is, the sugar alcohol of component (E) has a solubility in water at 20 ° C. of 40% by mass or less (dissolved in 40 g or less with respect to 100 g of a saturated aqueous solution at 20 ° C.), and as such component (E), erythritol, mannitol, In addition, one or more selected from reduced palatinose, which is a mixture of α-D-glucopyranosyl-1,6-sorbitol and α-D-glucopyranosyl-1,6-mannitol, is used. Thereby, it is possible to effectively increase the osmotic pressure in combination with the salt of the component (A) while giving a good flavor, effectively exuding the tissue fluid in the inflamed gingiva, and effectively using the waste products. It can be discharged. In addition, since the sugar alcohol of component (E) has low solubility, the water of component (D) can be present in the composition in an undissolved state in the form of powder or granule due to the above content. . On the other hand, in the high temperature environment, the sugar alcohol of the component (E) is greatly increased in solubility unlike the salt of the component (A). Therefore, the sugar alcohol dissolves when moving from the high temperature environment to the low temperature environment. There is a possibility that the component (E) is recrystallized and the crystal grows or enlarges. From this point of view, by using a sugar alcohol having a low solubility like the component (E) and the glycerin of the component (B) in combination, the crystal growth during the recrystallization is effectively suppressed, and an appropriate amount of the component ( By using C) and component (F) in combination, it is possible to ensure an appropriate viscosity and shape retention while suppressing an increase in viscosity in a high temperature environment.

The solubility of erythritol in water at 20 ° C. is 33% by mass.
Mannitol is a kind of hexitol and is a sugar alcohol of mannose. Industrially, it is produced by electrolytic reduction of corn starch sugar and high-pressure reduction of sucrose. The mannitol used in the present invention is not particularly limited as long as it is at least one selected from D-mannitol, L-mannitol, and D, L-mannitol, but D-mannitol existing in nature is available. Easy and preferred. The solubility of mannitol in water at 20 ° C. is 18% by mass.

  Reduced palatinose is a disaccharide sugar alcohol and is an equimolar mixture of α-D-glucopyranosyl-1,6-mannitol and its isomer α-D-glucopyranosyl-1,6-sorbitol. Reduced palatinose is obtained by using sucrose as a raw material, converting sucrose to palatinose with a glycosyltransferase, and then carrying out a hydrogenation reaction. Palatinit, known as reduced palatinose, is a trade name of Mitsui Sugar Co., Ltd., Suducker AG (Japanese name: Nankoku Sugar Co., Ltd.), and there is another name called isomalt. The solubility of reduced palatinose in water at 20 ° C. is 28% by mass.

  Among these components (E), one or two types selected from erythritol and reduced palatinose are preferable from the viewpoint of imparting a good structural viscosity to the composition and favorably suppressing an increase in viscosity under a high temperature environment. From the viewpoint of providing an excellent refreshing feeling, erythritol is more preferable.

  In particular, when erythritol is used as the component (E), the average particle diameter of the erythritol is preferably 100 μm or more, more preferably 150 μm or more from the viewpoint of imparting a good refreshing feeling, and the massage effect is improved. From the viewpoint of obtaining, it is preferably 355 μm or more, more preferably 400 μm or more, and further preferably 450 μm or more. Moreover, the average particle diameter of erythritol is good in that the salty taste is suppressed in the oral cavity by providing mild solubility while ensuring the spreadability throughout the oral cavity while following the solubility of the component (A). From the viewpoint of sustaining the flavor and providing a good feeling of use and a refreshing feeling, it is preferably 855 μm or less, more preferably 750 μm or less, and even more preferably 700 μm or less. And the average particle diameter of erythritol becomes like this. Preferably it is 100-855 micrometers, More preferably, it is 150-750 micrometers, From a viewpoint of raising a flavor also in presence of a component (A), obtaining the massage effect favorably, Preferably It is 355-855 micrometers, More preferably, it is 400-750 micrometers, More preferably, it is 450-700 micrometers.

The average particle size of erythritol is measured as follows.
Sieve: JIS standard sieve φ75mm
Opening: From the top, a receiver is placed under a sieve having openings of 855 μm and 355 μm.
Shaker: Micro type electromagnetic vibrator M-2 type (Tsutsui Rikenki Co., Ltd.)
Method: Place 15 g of sample on a 855 μm sieve and classify with an electromagnetic vibrator for 5 minutes. The sieving rate (cumulative mass) is plotted on normal probability paper, and the value corresponding to 50% is taken as the average particle size.

  The content of the component (E) is 15% by mass or more in the dentifrice composition of the present invention from the viewpoint of causing the component (E) to be undissolved in the composition to give a good refreshing feeling. , Preferably it is 18 mass% or more, More preferably, it is 20 mass% or more. In addition, the content of the component (E) is 60% by mass or less in the dentifrice composition of the present invention from the viewpoint of securing a good usability and imparting an appropriate structural viscosity, and preferably It is 53 mass% or less, More preferably, it is 50 mass% or less. And content of a component (E) is 15 to 60 mass% in the dentifrice composition of this invention, Preferably it is 18 to 53 mass%, More preferably, it is 20 to 48 mass%. It is.

  While the mass ratio of component (E) to component (D) ((E) / (D)) effectively ensures that the undissolved component (E) is present in the composition, From the viewpoint of maintaining the balance with the solubility of the component (A) and enhancing the flavor, it is preferably 0.5 or more, more preferably 0.7 or more, still more preferably 0.8 or more, From the viewpoint of imparting a good structural viscosity and improving the stability in a high temperature environment, it is preferably 3.5 or less, more preferably 3.2 or less, and even more preferably 3 or less. And mass ratio ((E) / (D)) of a component (E) and a component (D) becomes like this. Preferably it is 0.5-3.5, More preferably, it is 0.7-3.2, More preferably, it is 0.8-3.

  The total content of the component (A) and the component (E) is such that the undissolved component (A) and the component (E) are present in the composition, while having a good structural viscosity, the component (A) and the component (E). (E) From the viewpoint of ensuring good melting of the mouth, in the dentifrice composition of the present invention, it is preferably 30% by mass or more, more preferably 35% by mass or more, from the viewpoint of ensuring good usability, And from a viewpoint of provision of moderate structural viscosity, Preferably it is 65 mass% or less, More preferably, it is 61 mass% or less, More preferably, it is 58 mass% or less.

  The mass ratio ((A) + (E)) / (D) of the total content of the component (A) and the component (E) and the component (D) is the undissolved component (A) and component (E). From the viewpoint of providing a good structural viscosity while ensuring the presence of the component (A) and the component (E) in the mouth, it is preferably 1 or more, more preferably 1.3 or more, more preferably It is 1.5 or more, and preferably 6 or less, more preferably 5 or less, and even more preferably 4.8 or less, from the viewpoint of securing a good usability and imparting an appropriate structural viscosity. is there.

  The dentifrice composition of this invention contains 3 to 7 mass% of thickening silica whose oil absorption is 200-400 mL / 100g as a component (F). As a result, it is possible to ensure the provision of a good flavor, and not only the component (A) but also the component (E) has a high content, and the component (B) and the component (C) are used in combination. It is possible to effectively suppress the increase in viscosity that tends to occur in the environment.

  The thickening silica of component (F) means silica having an oil absorption of 200 to 400 mL / 100 g, preferably 220 to 380 mL / 100 g, and more preferably 250 to 350 mL / 100 g. Therefore, the thickening silica of component (F) is a silica with a large oil absorption, and is different from the silica used as an abrasive. Generally, the oil absorption of silica used as an abrasive is 50 to 150 mL / 100 g. Here, the amount of oil absorption indicates the amount of oil that can be supported by silica, and the measurement method is based on the method based on JIS K5101-13-2 (established in 2004), depending on the amount of oil absorbed in the boiled sea bream. Identify. As the component (F), cylicia, silopure (manufactured by Fuji Silysia Chemical), thixosyl (manufactured by Rhodia), sorbosyl (manufactured by Ineos Silica), fine seal (manufactured by Tokuyama), nip gel (manufactured by Tosoh Silica) Commercial products can be used.

  The content of the component (F) is 3% by mass or more in the dentifrice composition of the present invention from the viewpoint of ensuring the provision of a good flavor and effectively suppressing the increase in viscosity under a high temperature environment. Thus, it is preferably 3.3% by mass or more, and more preferably 3.5% by mass or more. Moreover, content of a component (F) is 7 mass% or less in the dentifrice composition of this invention from a viewpoint which maintains moderate viscosity and ensures a favorable usability, Preferably it is 6.7. It is at most mass%, more preferably at most 6.5 mass%. And content of a component (F) is 3 to 7 mass% in the dentifrice composition of this invention, Preferably it is 3.3 to 6.7 mass%, More preferably, it is 3 0.5 to 6.5% by mass.

  The mass ratio of component (D) to component (F) ((D) / (F)) is preferably 1.5 or more, more preferably 2 or more, from the viewpoint of securing an appropriate viscosity. Preferably it is 3 or more. In addition, the mass ratio ((D) / (F)) of the component (D) and the component (F) is preferable from the viewpoint of ensuring good flavor and effectively suppressing the increase in viscosity under a high temperature environment. Is 10 or less, more preferably 7 or less, and even more preferably 6 or less. And mass ratio ((D) / (F)) of a component (D) and a component (F) becomes like this. Preferably it is 1.5-10 or less, More preferably, it is 2-7, More preferably, it is 3- 6.

  The dentifrice composition of the present invention may further contain propylene glycol from the viewpoints of good mouth solubility, usability, and manufacturability. When propylene glycol is contained, the content of propylene glycol is preferably 0.1% by mass or more, and more preferably 1% by mass in the dentifrice composition of the present invention, from the viewpoint of improving the good mouth solubility. % Or more, and more preferably 2% by mass or more. The content of propylene glycol is preferably 10% by mass or less, more preferably 8% by mass or less, and further preferably 7% in the dentifrice composition of the present invention from the viewpoint of securing a good flavor. It is below mass%. The content of propylene glycol in the dentifrice composition of the present invention is preferably 0.1% by mass or more and 10% by mass or less, more preferably 1 to 8% by mass, and further preferably 2 to 7%. % By mass.

  The dentifrice composition of the present invention further includes surfactants such as anionic surfactants and nonionic surfactants; tin fluoride, sodium fluoride, ammonium fluoride, etc., as long as the effects of the present invention are not impaired. Fluoride such as fluoride ion supply compound and sodium monofluorophosphate; polyethylene glycol, wetting agent other than glycerin and propylene glycol, such as sorbitol and xylitol, which are sugar alcohols having a solubility in water at 20 ° C. of 50% by mass or more; triclosan , Isopropylmethylphenol, cetylpyridinium chloride, tocopherol, glycyrrhetinic acid and other oil-soluble medicinal ingredients; fragrances; pH adjusters; and other active ingredients.

  For example, as perfumes, peppermint oil, spearmint oil, cinnamon oil, anise oil, eucalyptus oil, winter green oil, cassia oil, clove oil, thyme oil, sage oil, sage clary oil, nutmeg oil, funnel oil, lemon oil, Orange oil, peppermint oil, cardamom oil, coriander oil, basil oil, mandarin oil, lime oil, lavender oil, rosemary oil, ginger oil, grapefruit oil, laurel oil, camomil oil, caraway oil, marjoram oil, bay oil , Lemongrass oil, lemon balm oil, pimento berry oil, palmarosa oil, origanum oil, pine needle oil, pettigren oil, neroli oil, rose oil, jasmine oil, and other fragrance ingredients processed from these natural fragrance ingredients Menthol, carvone, anethole, cineo , Methyl salicylate, synamic aldehyde, eugenol, 3-1 -menthoxypropane-1,2-diol, thymol, linalool, linalyl acetate, limonene, menthone, menthyl acetate, N-substituted-paramentane-3-carboxamide, Pinene, octyl acetate, citral, pulegone, calbeetoacetate, anisaldehyde, benzaldehyde, camphor, lactone, ethyl acetate, ethylbutyrate, allylcyclohexanepropionate, methylanthranilate, ethylmethylphenylglycidate, vanillin, un Decalactone, hexanal, ethyl alcohol, propyl alcohol, butanol, isoamyl alcohol, hexenol, dimethyl sulfide, cycloten, furfura Perfume ingredients such as red, trimethylpyrazine, ethyl lactate, methyl lactate, ethyl thioacetate; strawberry flavor, apple flavor, banana flavor, pineapple flavor, grape flavor, mango flavor, butter flavor, milk flavor, fruit mix flavor, tropical fruit Examples of blended fragrance ingredients such as flavors.

The dentifrice composition of the present invention can be contained in a tube container. The tube container may be any container as long as it can accommodate the dentifrice composition, and usually includes a container main body and a cap, and the container main body has a discharge port and a trunk portion. The body portion is formed by fusing one end of a cylindrical shape, and the other end of the body portion is continuous with an outer edge end portion of the shoulder portion, and the shoulder portion includes a discharge port protruding from the center. Usually, the trunk | drum of a container main body has a multilayer structure, a dentifrice composition is filled from the said cylindrical end, and one end is fuse | fused and accommodated. From the viewpoint of ensuring the ease of fusing one end of the body portion of the container body, the innermost layer of the container is provided with an innermost layer made of polyethylene, preferably an innermost layer made of low-density polyethylene, and more preferably linear low It has an innermost layer made of density polyethylene. Examples of the other layers include metallic layers such as aluminum and synthetic resin layers such as polypropylene and polyethylene terephthalate. The innermost layer of the container of the present invention preferably has a thickness of 50 μm to 200 μm, and preferably 70 μm to 180 μm.
From the viewpoint of strength and the like, the total thickness including the thickness of the innermost layer of the body portion of the container body of the tube container is preferably 150 μm or more, more preferably 200 μm or more, from the viewpoint of ease of pressing. Preferably it is 400 micrometers or less, More preferably, it is 350 micrometers or less.

  The discharge port that protrudes in a cylindrical shape from the center of the shoulder of the tube container body has an open end, and the inner diameter of the opening is preferably 2 mm or more, more preferably 3 mm or more from the viewpoint of pressability. From the viewpoint of dischargeability to a toothbrush, it is preferably 10 mm or less, more preferably 8 mm or less. The discharge port protrudes in a cylindrical shape, and an engaging portion or a screw groove for attaching a cap is formed on the cylindrical outer peripheral surface. The cap is provided with a cylindrical portion formed with a protrusion for engaging with the engagement portion of the discharge port or a screw groove for screwing with the screw groove of the discharge port. The discharge port is engaged with the cap. The opening at the tip of the discharge port can be sealed by joining or screwing. From this point of view, the cylindrical length of the discharge port is the length from the outer peripheral surface of the shoulder to the end surface of the opening, preferably 10 mm or more, more preferably 15 mm or more, preferably 25 mm or less. More preferably, it is 20 mm or less.

  The dentifrice composition of the present invention can be accommodated in the tube container described above, and the pressure applied to the body part of the container body when discharged from the discharge port of the tube container is 50 ° C. even after storage. Preferably it is 3.7 kg or less, More preferably, it is 3.5 kg or less, More preferably, it is 3.3 kg or less, More preferably, it is 3 kg or less. The pressing force applied to the body part of the container body is preferably 1 kg or more, more preferably 1.5 kg or more, from the viewpoint of preventing unintentional discharge even after storage at 50 ° C. is there. The above-mentioned pressing force is, after storage at 50 ° C., at room temperature (25 ° C.), for example, with a digital force gauge AD-4937-1000N manufactured by A & D Co., Ltd. It can be used and measured with a digital force gauge descent rate of 5 cm / min. The pressing position of the tube container is approximately the center position of the body portion of the container body, specifically, a position of 7.5 cm in the axial direction of the body portion of the container body from the tip of the discharge port of the tube container, It is preferable that it is the center position of the width direction of a trunk | drum part. The pressing force is the weight value of the digital force gauge when the dentifrice composition accommodated from the discharge port is ejected at a length of 1.5 cm. The accommodation amount of the dentifrice composition in the container body is It is 70 to 85% with respect to the volume. For example, when the circumferential length of the trunk portion is 10 cm and the total length of the trunk portion is 14.5 cm, it is preferably 100 g. In addition, the inner diameter of the discharge port that affects the pressing is 8 mm.

  In the method for producing a dentifrice composition of the present invention, at least a part of the salt of component (A) and the sugar alcohol of component (E) are dispersed in the dentifrice composition in an undissolved state in a powdered or granular form. Then, after passing the step of mixing the composition 1 containing the components (B) to (D) and (F), the composition 2 in which the component (A) and the component (E) are blended with the composition 1 is mixed. It is preferable to include the process to perform, and when a heating process is further included, it is preferable to include the process of mix | blending and mixing a component (A) and a component (E) in the process after passing through this heating process. In addition, the order in particular which mix | blends component (B)-(D) and (F) is not restrict | limited, Any may be added previously (mixed) and may be mixed, and it adds collectively (mixing). And may be mixed.

In relation to the embodiment described above, the present invention further discloses the following dentifrice composition.
[1] The following components (A) to (F):
(A) Sodium chloride 5% by mass to 30% by mass (B) Glycerin 0.1% by mass to 5% by mass (C) Binder 0.05% by mass to 0.3% by mass (D) Water 10% by mass (E) One or two or more sugar alcohols selected from erythritol, mannitol, and reduced palatinose having a solubility in water at 20 ° C. of 40% by mass or less 15% by mass to 60% by mass ( F) Dentifrice composition containing 3% by mass or more and 7% by mass or less of thickening silica having an oil absorption of 200 to 400 mL / 100 g.
[2] The average particle size of the component (A) is preferably 300 μm or more, more preferably 500 μm or more, further preferably 700 μm or more, preferably 2000 μm or less, more preferably 1800 μm or less. More preferably, the dentifrice composition of the above [1], which is 1500 μm or less.
[3] The content of component (A) is preferably 8% by mass or more, more preferably 10% by mass or more, preferably 25% by mass or less, more preferably 22% by mass or less. The dentifrice composition of [1] or [2].
[4] The content of the component (B) is preferably 0.5% by mass or more, more preferably 1% by mass or more, preferably 4.5% by mass or less, more preferably 4% by mass. The dentifrice composition according to any one of [1] to [3] above.

[5] Component (C) is preferably one or more selected from sodium carboxymethylcellulose, hydroxyethylcellulose, carboxyvinyl polymer, xanthan gum, carrageenan, sodium alginate, hydroxypropylcellulose, guar gum, sodium chondroitin sulfate and the like. 1 or 2 or more types selected from carboxyvinyl polymer, sodium carboxymethyl cellulose, xanthan gum, and carrageenan are more preferable, and 1 or 2 types selected from sodium carboxymethyl cellulose and xanthan gum are more preferable [1] to [4] ] Any one dentifrice composition.
[6] The content of component (C) is preferably 0.08 mass% or more, more preferably 0.1 mass% or more, preferably 0.27 mass% or less, more preferably 0. The dentifrice composition according to any one of the above [1] to [5], which is 25% by mass or less.
[7] The content of the component (D) is preferably 11% by mass or more, more preferably 12% by mass or more, preferably 27% by mass or less, more preferably 25% by mass or less. [1]-[6] Any one dentifrice composition.

[8] The mass ratio ((A) / (D)) between the component (A) and the component (D) is preferably 0.35 or more, more preferably 0.45 or more, and still more preferably 0.8. The dentifrice composition according to any one of the above [1] to [7], which is 5 or more, preferably 2.5 or less, more preferably 2.0 or less, and even more preferably 1.7 or less.
[9] The mass ratio of component (D) to component (B) ((D) / (B)) is preferably 2 or more, more preferably 2.5 or more, and even more preferably 3 or more. The dentifrice composition according to any one of [1] to [8] above, which is preferably 30 or less, more preferably 27 or less, and even more preferably 25 or less.
[10] The mass ratio of component (D) to component (C) ((D) / (C)) is preferably 50 or more, more preferably 60 or more, and even more preferably 70 or more, The dentifrice composition according to any one of the above [1] to [9], wherein is 250 or less, more preferably 220 or less, and still more preferably 190 or less.

[11] The dentifrice composition according to any one of [1] to [10], wherein component (E) is preferably one or two selected from erythritol and reduced palatinose, and more preferably erythritol.
[12] When component (E) is erythritol, the average particle diameter of such erythritol is preferably 100 μm or more, more preferably 150 μm or more, preferably 355 μm or more, more preferably 400 μm or more. More preferably, the dentifrice composition of any one of the above [1] to [10], which is 450 μm or more.
[13] The content of component (E) is preferably 18% by mass or more, more preferably 20% by mass or more, preferably 53% by mass or less, and more preferably 48% by mass or less. [1]-[12] Any dentifrice composition.
[14] The mass ratio ((E) / (D)) of the component (E) to the component (D) is preferably 0.5 or more, more preferably 0.7 or more, and still more preferably 0.8. The dentifrice composition according to any one of the above [1] to [13], which is 8 or more, preferably 3.5 or less, more preferably 3.2 or less, and further preferably 3 or less.
[15] The total content of component (A) and component (E) is preferably 30% by mass or more, more preferably 35% by mass or more, preferably 65% by mass or less, more preferably The dentifrice composition according to any one of the above [1] to [14], which is 61% by mass or less, more preferably 58% by mass or less.
[16] The mass ratio ((A) + (E)) / (D) of the total content of component (A) and component (E) and component (D) is preferably 1 or more, more preferably Any of the above [1] to [15] which is 1.3 or more, more preferably 1.5 or more, preferably 6 or less, more preferably 5 or less, and further preferably 4.8 or less. Or 1 dentifrice composition.

[17] The content of component (F) is preferably 3.3% by mass or more, more preferably 3.5% by mass or more, preferably 6.7% by mass or less, more preferably 6% by mass. The dentifrice composition according to any one of the above [1] to [16], which is 5% by mass or less.
[18] The mass ratio ((D) / (F)) of component (D) to component (F) is preferably 1.5 or more, more preferably 2 or more, and further preferably 3 or more. The dentifrice composition according to any one of the above [1] to [17], which is preferably 10 or less, more preferably 7 or less, and even more preferably 6 or less.
[19] Preferably, the total thickness including the thickness of the innermost layer of the body portion of the container body of the tube container is preferably 150 μm or more, more preferably 200 μm or more. The dentifrice composition according to any one of the above [1] to [18], which is preferably 400 μm or less, more preferably 350 μm or less.
[20] After passing through the step of mixing the composition 1 containing the components (B) to (D), the composition 1 obtained is blended with the component (A) and the component (E), and the composition 2 is mixed. The method for producing a dentifrice composition according to any one of the above [1] to [19], which comprises the step of:

  Hereinafter, the present invention will be specifically described based on examples. In addition, unless otherwise indicated in a table | surface, content of each component shows the mass%.

[Examples 1-6, Comparative Examples 1-6]
In accordance with the composition shown in Table 1, first, the composition 1 containing the components (B) to (D) and (F) was mixed, and then components other than the component (A) and the component (E) excluding the fragrance were composed. Each dentifrice composition was obtained by adding (mixing) to the product 1, then adding (mixing) the component (A) and the component (E), further mixing, and then adding and mixing the fragrance.
Each measurement and evaluation was performed according to the following method.
The results are shown in Table 1.

Each dentifrice composition was contained in a tube container. The body of the container body of the tube container has an innermost layer of linear low density polyethylene, and an outermost layer is provided with a printing layer (including varnish). Printing layer / low density polyethylene 50 μm / adhesive / high density polyethylene 80 μm / adhesive / aluminum 12 μm / adhesive / polyethylene terephthalate 12 μm / adhesive / linear low density polyethylene 100 μm, consisting of a multilayer resin layer with an aluminum layer in the middle layer, thickness of the body of the container body Was 260 μm. The tube container was provided with a shoulder portion integrally provided with a discharge port, the shoulder portion and the discharge port were made of low-density polyethylene, and the thickness of the shoulder portion was 1.3 mm on average. The length of the cylinder part of the discharge port from the shoulder surface to the opening of the discharge port is 15 mm, the inner diameter of the discharge port is 8 mm, the circumference of the container body part is 100 mm, and the axis of the container body part The length in the direction (the length from the fused end of the body part to the surface of the shoulder part at the other end) was 145 mm.
The discharge port was provided with a screw groove, and the obtained dentifrice composition was filled in the container, and the cap was screwed and sealed, and then stored. Subsequently, each measurement and each evaluation were performed according to the method shown below using the dentifrice composition discharged from the discharge port after storage.

<Measurement of pressing force>
100 g of the dentifrice composition was accommodated in a tube container, and a cap was screwed into the discharge port and stored at 50 ° C. for 1 month, and then the pressing force when extruding the dentifrice composition at 25 ° C. was measured. The pressing force was measured with a digital force gauge AD-4937-1000N manufactured by A & D. Attach a circular plunger with a diameter of 2 cm to the digital force gauge, lower the gauge at a speed of 5 cm / min, and position 7.5 cm in the axial direction of the body of the container body from the tip of the discharge outlet of the tube container of the test sample And the position of the width direction center of the said trunk | drum part was pressed with the plunger. The weight value of the digital force gauge when a paste having a length of 1.5 cm was discharged from the mouth of the test sample was read and used as the pressing force (kg) of the test sample.

<Evaluation of extrudability>
Eight expert panelists evaluated the ease of extrusion when the dentifrice composition was stored in a tube container and stored at 50 ° C for 1 month, and then extruded 1 cm at 25 ° C according to the following criteria. An average value was obtained and used as an evaluation index.
5: Extremely easy to extrude 4: Slightly easy to extrude 3: Not hard but not easy to extrude 2: Feels a little hard and slightly extrude 1: Hard and difficult to extrude

《Evaluation of feel》
8 expert panelists put the dentifrice composition in a tube container and stored it at 50 ° C for 1 month, then took 1g of the dentifrice composition on a toothbrush with a blind and brushed it freely for about 2 minutes. Evaluation was made according to the following criteria, and the average value was obtained as an evaluation index. In addition, eight expert panelists judged that salty taste was suppressed about any dentifrice composition, and the flavor was favorable.
5: A smooth feel 4: A smooth feel with little rough feel 3: A slightly rough feel 2: A rough feel 1: A very rough and uncomfortable feeling It was a touch

<Evaluation of tightening feeling>
Twenty professional panelists took 1g of dentifrice composition on a toothbrush with a blind, brushed freely for about 2 minutes, and evaluated the tightness of the gums after brushing according to the following evaluation criteria, and evaluated the average value. It was used as an index.
5: Feeling that the gums are tightened very strongly 4: Feeling that the gums are tightened 3: Feeling that the gums are tightened little 2: Feeling that the gums are tightened very little 1: Feeling that the gums are tightened is completely absent

According to the said result, the dentifrice composition of Examples 1-6 has the outstanding flavor by which the smooth touch was hold | maintained while keeping the favorable extrudability after high temperature preservation | save, and the salty taste was suppressed. Thus, it can be seen that the tightness is fully exhibited.
On the other hand, Comparative Example 1 with a high content of glycerin of component (B), Comparative Example 2 with a high content of binder of component (C), and Comparative Example 6 with a low content of water of component (D) In either case, the increase in viscosity under a high-temperature environment could not be sufficiently suppressed, and Comparative Example 3 containing no component (B) had a rough and unpleasant feel. Further, Comparative Example 4 having a low content of component (A) and Comparative Example 5 having a high content of water of component (D) together with the content of binder of component (C) have insufficient tightness. there were.

[Examples 7 to 12]
Furthermore, according to the composition shown in Table 2, each dentifrice composition shown in Tables 3 to 5 was used to obtain each dentifrice composition in the same manner as in Example 1, and then each measurement and evaluation were performed.
The results are shown in Table 2.
In addition, the dentifrice compositions of Examples 7 to 12 all have an excellent flavor that retains good extrudability and retains a smooth feel even after high temperature storage, and has a suppressed salty taste, It was confirmed that the tightness was fully exhibited.

Claims (6)

The following components (A) to (F):
(A) Sodium chloride 5% by mass to 30% by mass (B) Glycerin 0.1% by mass to 5% by mass (C) Binder 0.05% by mass to 0.3% by mass (D) Water 10% by mass (E) One or two or more sugar alcohols selected from erythritol, mannitol, and reduced palatinose having a solubility in water at 20 ° C. of 40% by mass or less 15% by mass to 60% by mass ( F) Dentifrice composition containing 3% by mass or more and 7% by mass or less of thickening silica having an oil absorption of 200 to 400 mL / 100 g.   The dentifrice composition according to claim 1, wherein a mass ratio ((D) / (B)) of the component (D) and the component (B) is 2 or more and 30 or less.   The dentifrice composition of Claim 1 or 2 whose mass ratio ((D) / (C)) of a component (D) and a component (C) is 50-250.   The dentifrice composition according to any one of claims 1 to 3, wherein a mass ratio ((D) / (F)) of the component (D) to the component (F) is 1.5 or more and 10 or less.   The dentifrice composition of any one of Claims 1-4 accommodated in a tube container.   After passing through the step of mixing the composition 1 containing the components (B) to (D) and (F), the composition (A) and the component (E) are blended and mixed with the obtained composition 1 The manufacturing method of the dentifrice composition of any one of Claims 1-5 including the process of obtaining 2.