Dentifrice

Abstract

To provide a dentifrice with a dentifrice composition filled in an upright bottle container using an airless pump that sufficiently suppresses the occurrence of foam entrapment while ensuring good discharge and shape retention.SOLUTION: An upright bottle container (X), in which an airless pump member equipped with a nozzle is connected to a top opening of a container body, is filled with a dentifrice composition (Y) at an initial fill rate of less than 100%. In the upright bottle container (X), an inlet port (x1-1) is in a specific state, and in the dentifrice composition (Y), a content of water insoluble powder is less than 5 mass%, and a ratio of a specific value of the Helipath viscosity at 25°C (y1) to the B8H viscosity at 25°C (y2) is a specific value.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a dentifrice in which a dentifrice composition is filled in an upright bottle container. [Background technology]

[0002] The toothpaste, which is filled in a container equipped with a pump, can be easily used by simply pressing the pump. Among them, we have an "airless pump" that does not allow air to enter the pump. Compared to air inflow type pumps, this method has the advantage of easily preventing deterioration of the quality of the contents. has. For example, Patent Document 1 discloses an airless pump and a device for supplying a toothpaste composition to the airless pump. A toothpaste containing a specific viscosity and a specific amount of thickening silica is contained in a pump type toothpaste container including a tube. A dentifrice composition is disclosed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-8323 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, a paste with high shape retention, such as toothpaste, is placed in an upright airless pump container. When filling and attempting to dispense toothpaste from the container, the toothpaste may be initially filled with airless pump containers. If the container is filled to less than 100%, the air present in the container may become mixed into the dentifrice composition. The present inventors have newly focused their attention on the problem of bubbles being entrained during ejection. However, in the conventional technology such as that in the above-mentioned Patent Document 1, it is difficult to sufficiently prevent the entrainment of bubbles during discharge. To suppress the amount of fluoride to 100% while still achieving good ejection properties and shape retention on the toothbrush, further improvements are required. We are in a situation that calls for good.

[0005] Therefore, the present invention provides a method for filling a dentifrice composition into an upright bottle container using an airless pump. In the toothpaste thus obtained, the occurrence of bubble entrapment is sufficiently suppressed, while good ejection properties and shape retention are achieved. The present invention relates to a toothpaste that can ensure good oral hygiene. [Means for solving the problem]

[0006] Therefore, the present inventors have conducted extensive research to solve the above problems, and have found that the intake port is in a specific state. The toothpaste is a toothpaste with a unique viscosity characteristic in which the content of water-insoluble powder is limited in an upright bottle container. By filling the polishing composition, it is possible to effectively suppress unnecessary bubble entrapment. It has been found that a dentifrice can be obtained which can ensure good ejection properties and shape retention.

[0007] Therefore, the present invention provides an airless pump member having a nozzle attached to an upper opening of a container body. The toothpaste composition (Y) is poured into the adjacent upright bottle containers (X) at an initial filling rate of less than 100%. ) is filled in the dentifrice, The upright bottle container (X) is connected to the pump and the suction valve (x1-1) is opened. The dentifrice composition (Y) is inhaled through (x1-2), and the dentifrice composition is discharged from the nozzle outlet. (Y) is ejected by a mechanism; In the upright bottle container (X), the intake port (x1-1) is inserted into the toothpaste container before starting to use the toothpaste. The composition (Y) is not immersed in the composition (Y), In the dentifrice composition (Y), the content of the water-insoluble powder (yx) is less than 5 mass %, Or, it does not contain water-insoluble powder (yx) and has a helipath viscosity (y1) of 1300d at 25°C. The Helipath viscosity (y1) at 25°C is 2 Pa·s or more and 3000 dPa·s or less. The ratio ((y1) / (y2)) to the B8H viscosity (y2) at 5°C is 0.3 or more and less than 1. A dentifrice is provided. Effect of the Invention

[0008] The dentifrice composition is filled in the upright bottle container of the present invention (hereinafter, "the dentifrice composition of the present invention"). According to the toothpaste product (also called "toilet polish"), when the toothpaste composition is discharged, air in the container is mixed into the toothpaste composition. This effectively prevents unnecessary bubble entrainment and excessive stringiness. It also prevents unnecessary dripping and provides good ejection and shape retention, making it comfortable to use. It is also possible to experience a highly convenient usage. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing one embodiment of an upright bottle constituting a dentifrice of the present invention. [Diagram 2] 2 is an enlarged view showing an upper opening of the container body in FIG. 1. [Diagram 3] This is an enlarged view showing the top opening of the container body in a container having a dip tube disposed at the lower end of an airless pump member, which is one embodiment of an upright bottle constituting the dentifrice of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described in detail below. In the present invention, good "dischargeability" refers to the ability to discharge a toothpaste composition from an upright bottle container. When the composition is discharged, the pump is easily pushed (extrusion property), and the composition at the nozzle outlet is The present invention is intended to prevent the occurrence of dripping and stringing between the nozzle and the discharge destination, and to prevent the composition from flowing out of the nozzle or in the flow path. This also includes the maintenance of smooth ejection by preventing unnecessary adhesion (ejection stability over time). It's the taste. In addition, "bubble entrapment" refers to air being mixed into the toothpaste composition discharged from the upright bottle container. This refers to a state in which the toothpaste composition becomes entrained in the form of foam, impairing the feel of use. Furthermore, the term "the inlet (x1-1) is not immersed in the dentifrice composition (Y)" refers to an upright bottle container. In the container body of the device, the inlet (x1-1) is inserted into the toothpaste composition (Y) without contacting the toothpaste composition (Y). This means a state of being separated from the polishing composition (Y).

[0011] The toothpaste of the present invention is provided with an airless pump member having a nozzle connected to the top opening of the container body. The toothpaste composition (Y) is filled into the upright bottle container (X) at an initial filling rate of less than 100%. It is filled.

[0012] The upright bottle container (X) of the present invention comprises a container body having a bottom surface and a top opening. The container has an airless pump member with a nozzle connected to the top opening of the container body. That is, as shown in the schematic diagram of FIG. 1, the upright bottle container (X ) 1 is fed through the upper opening 21 of the container body 2 and the airless pump member 3 to the nozzle 32. A flow path is formed leading to the discharge port. Therefore, when using the airless pump, the container 1 should be kept upright. In this way, the toothpaste composition can be easily discharged from the nozzle 32, improving usability and convenience. It is a container that contributes to this. The airless pump member 3 is a member equipped with a pump that does not allow air to flow in. The pressure inside the pump changes in response to the pressure applied, and the toothpaste composition filled in the container body 2 changes. Suction into the airless pump member 3 and discharge to the outside from the nozzle 32 are performed as a series of operations. This is possible. The airless pump member 3 shown in FIG. 1 is a so-called "dome-type pump." However, the present invention is not limited to this, and A member (not shown) having a pump in the form of a piston that presses the It is also possible to select the appropriate one.

[0013] In this way, the upright bottle container (X) 1 operates in conjunction with the operation of the pump 31 to open the suction port (x 1-1) through the suction valve (x1-2) and the dentifrice composition is sucked in through the nozzle 32. The toothpaste composition is dispensed from the mouth. For example, the upright bottle container (X1 shown in FIG. 1) In the case of the form 1, when the button of the pump 31 is pressed, the pump The internal pressure of 31 fluctuates, and the intake valve (x1-2) can be operated. When the internal pressure of the pump 31 increases due to the operation of the pump, the suction valve (x1-2) closes and the toothbrush While preventing the inflow of the composition, if the internal pressure in the pump decreases, the suction valve (x1-2) opens, The dentifrice composition is inhaled through the inhalation port (x1-1).

[0014] In the upright bottle container (X) of the present invention, the intake port is opened before starting to use the toothpaste. (x1-1) is not immersed in the dentifrice composition (Y). In addition, when a dip tube is provided at the lower end of the airless pump member, the suction port ( x1-1) is the lower end of the dip tube.

[0015] In conventional bottle containers, the lower end is long enough to reach the vicinity of the bottom surface of the container body. This is a dip tube that is used from the first use of the pump until the end. It is designed to suck up even the small amount of content remaining near the bottom and dispense it without waste. This was done. However, we use an "airless pump" that does not allow air to enter the pump, and the initial filling rate is The proportion of the dentifrice composition (Y) in the upright bottle container (X) is less than 100%. In the present invention, such a long dip tube is attached to the lower end of the airless pump member. When the nozzle is disposed from the bottom surface of the container body toward the bottom surface of the container body, the nozzle is immersed in the toothpaste composition in the container. Therefore, as the amount of toothpaste composition remaining decreases, the toothpaste The air present in the unfilled area of ​​the composition is also pumped out together with the toothpaste composition in response to the operation of the pump. As a result, air gets mixed into the toothpaste composition discharged from the nozzle, However, the inventors have newly discovered that this is a major cause of unnecessary and unpleasant bubble entrainment. We focused on the following.

[0016] Therefore, the inventor first determined the following points regarding the discharge of the upright bottle container (X) according to the present invention: In order to effectively suppress unnecessary foam entrainment in the dentifrice composition, the dentifrice should be inhaled before starting to use the dentifrice. While the inlet (x1-1) is not immersed in the dentifrice composition (Y), the water-insoluble powder described below is It was found that the toothpaste composition (Y) having a specific viscosity characteristic and limited inclusion amount should be filled into the toothpaste. As a result, according to the present invention, when the toothpaste is first used, the toothpaste in the container body is first removed. It is possible to pre-empt the air occupying the unfilled areas of the composition with several pumping operations. Furthermore, the occurrence of bubble entrapment is effectively suppressed until the toothpaste composition (Y) in the container is completely used up. This not only controls the viscosity but also enables the development of good ejection properties and shape retention.

[0017] Before starting to use the dentifrice, the inlet (x1-1) is not immersed in the dentifrice composition (Y). The distance (xd) from the intake port (x1-1) to the intake valve (x1-2) is set to prevent unwanted bubble entrainment. From the viewpoint of effectively suppressing the above, the thickness is preferably less than 50 mm, and more preferably less than 46 mm. and more preferably less than 35 mm, and even more preferably less than 25 mm. and more preferably less than 20 mm, and even more preferably less than 15 mm. and more preferably less than 10 mm, and even more preferably less than 5 mm. , and more preferably less than 1 mm. In addition, the diameter of the inlet (x1-1) is set to 1.0 mm. From the viewpoint of ensuring the fluidity in the flow path, the thickness is preferably 1 mm or more, and more preferably The thickness is preferably 5 mm or more, more preferably 15 mm or less, and even more preferably 12 mm or less. be.

[0018] In one embodiment of the upright bottle container (X), the inlet (x1-1 In order to prevent the dentifrice composition (Y) from being immersed in the dentifrice composition (Y), it is preferable to use the inlet (x1-1 ) to the suction valve (x1-2) within the above range, As shown, the lower end of the dip tube 33 disposed at the lower end of the airless pump member 3 The intake port (x1-1) is formed by this. Alternatively, in another embodiment of the upright bottle container (X), as shown in FIG. The airless pump member 3 has a suction port (x1-1) at the lower end thereof without a suction tube 33. ) are integrally formed. As a result, the present invention is obtained by filling the dentifrice composition (Y) at an initial filling rate of less than 100%. In the case of a dentifrice, the inlet (x1-1) is immersed in the dentifrice composition (Y) before use. The air occupying the area of ​​the container body that is not filled with the toothpaste composition is removed at the start of the first use. This makes it possible to effectively suppress the occurrence of unnecessary bubble entrainment during discharge. This can be done.

[0019] When a dip tube 33 is provided at the lower end of the airless pump member 3, The length of the intake tube 33 is set to be equal to or longer than the intake valve (x1-x2) from the viewpoint of effectively suppressing unnecessary bubble entrainment. 2) to the lower end of the dip tube 33, preferably less than 43 mm; More preferably, it is less than 35 mm, even more preferably, it is less than 30 mm, and even more preferably, it is less than 35 mm. Preferably it is less than 20 mm, and more preferably it is less than 18 mm. More preferably, the upright bottle container (X) is attached to the lower end of the airless pump member 3. No dip tube is provided. The inner diameter of the inlet (x1-1) is set to ensure smooth flow of the composition in the flow passage and to provide a good discharge. From the viewpoint of maintaining the extrusion property, the thickness is preferably 1 to 15 mm, and more preferably 2 to 14 mm. More preferably, it is 3 to 13 mm, and even more preferably, it is 4 to 12 mm. and more preferably, 5 to 11 mm.

[0020] In the upright bottle container (X), the maximum pump pressure (x2) maintains good discharge performance. From the viewpoint of improving usability while maintaining the pressure, the pressure is preferably 10N or more, and more preferably 20N or more. More preferably, the load is 30N or more, and more preferably, the load is 100N or less. The force is preferably 80N or less, and more preferably 50N or less.

[0021] The initial filling rate of the dentifrice composition (Y) in the upright bottle container (X) is less than 100%. The range may be 50 to 99%, 60 to 95%, or 65 to 90%. Alternatively, it may be 70 to 85%. The initial filling rate (%) is the filling rate of the upright bottle before starting to use the dentifrice of the present invention. The filling rate (%) of the toothpaste composition (Y) in the container body of the container (X) is the filling rate (%) of the toothpaste composition (Y) in the container body of the upright bottle container ( The volume ratio (%) of the dentifrice composition (Y) to the internal volume of the container body of (X) taken as 100%. ) In addition, the upright bottle container (X) is in the form of a film container, particularly a pouch container. In this case, as shown in FIG. 1, the airless pump member 3 having the nozzle is attached to the container body. When used by setting it in the top opening 21, this is the upright type that is the standard for the initial filling rate (%). The internal volume of the container body of the bottle container (X) is the volume of the airless pump member 3 and the suction valve after installation. This means the volume of all void areas in the container body that are blocked by (x1-2).

[0022] The initial air content (%) in the upright bottle container (X) is 1% or more and 5% or less in the container body. It may be less than 0%, more than 5% and less than 40%, or more than 10% and less than 45%. or may be more than 15% and less than 30%. The initial air presence rate (%) is the rate of air in the upright bowl before the start of use of the dentifrice of the present invention. This value indicates the total amount of air present in the container body of the upright bottle container (X). This refers to the volume ratio (%) of the total amount of air when the internal volume of the container (X) is 100%. In addition, the upright bottle container (X) is in the form of a film container, particularly a pouch container. In this case, as shown in FIG. 1, the airless pump member 3 having the nozzle is attached to the container body. When used by setting it in the upper opening 21, the upright type is the standard for the initial presence rate (%). The internal volume of the container body of the bottle container (X) is the volume of the airless pump member 3 and the suction valve (x1-2 ) means the volume of all void areas in the container body enclosed by the

[0023] The internal volume of the container body of the upright bottle container (X) can be appropriately designed taking into consideration usability, For example, the amount is preferably 30 to 1000 mL, and more preferably 50 to 500 mL. More preferably, the amount is 75 to 300 ml, and even more preferably, the amount is 80 to 250 ml. and more preferably 90 to 200 ml.

[0024] In the upright bottle container (X), the liquid is discharged from the discharge port of the nozzle 32 by one pressure of the pump. The amount (x3) of the dentifrice composition (Y) dispensed is preferably from the viewpoint of ensuring good usability. is 0.1 g or more, more preferably 0.5 g or more, and even more preferably 0.75 g or more, even more preferably 0.8 g or more, and preferably 10 g or less. , more preferably 7 g or less, even more preferably 5 g or less, and even more preferably Most are 4g or less.

[0025] The material of the upright bottle container (X) changes shape depending on the amount of dentifrice composition (Y) consumed. It is preferable to use a material having a certain degree of flexibility, such as polyethylene, polypropylene, or polyethylene. Among them, the airless pump member shown in Figure 1 is The material of the button of the pump 31 in No. 3 is a material that is highly flexible and easily deforms elastically when pressed. It may be adopted. The shape of the upright bottle container (X) is determined from the viewpoints of ease of filling and sealing. From this viewpoint, it is preferable to use a film container, specifically, for example, a pouch container. is preferred.

[0026] The dentifrice composition (Y) of the present invention is filled in the upright bottle container (X). , the content of water-insoluble powder (yx) is less than 5 mass%, or the content of water-insoluble powder (yx) is less than 5 mass%. Does not contain, and the Helipath viscosity (y1) at 25°C is 1300 dPa·s or more and 3000 dPa ·s or less, and the Helipath viscosity (y1) at 25°C and the B8H viscosity (y2) at 25°C The ratio ((y1) / (y2)) is 0.3 or more and less than 1. The dentifrice composition (Y ) prevents unnecessary bubble entrapment due to air inclusion until the toothpaste composition (Y) in the container is completely used up. It is possible to effectively suppress the occurrence of lumps, and it has good ejection properties as well as excellent shape retention. It can be expressed.

[0027] The helipath viscosity (y1) of the dentifrice composition (Y) at 25°C was measured using the upright bottle container (X). It is filled in the oil, which exhibits unique viscosity characteristics while effectively suppressing the occurrence of bubble entrainment and providing good From the viewpoint of ensuring excellent shape retention while maintaining ejection properties, it is necessary to use a viscosity of 1300 dPa·s or more. Preferably, the viscosity is 1350 dPa·s or more, and more preferably, 1400 dPa·s or more. More preferably, the elastic modulus is 1450 dPa·s or more, and even more preferably, the elastic modulus is 150 0 dPa·s or more and 3000 dPa·s or less, preferably 2500 dPa·s or less s or less, more preferably 2300 dPa s or less, and even more preferably 20 00 dPa·s or less, and more preferably 1800 dPa·s or less. The helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 1300 dPa·s or more and The viscosity is 0 dPa·s or less, preferably 1350 to 2500 dPa·s, and more preferably Preferably, it is 1400 to 2300 dPa·s, and more preferably, it is 1450 to 2000 dPa·s. a·s, and even more preferably 1500 to 1800 dPa·s.

[0028] The B8H viscosity (y2) of the dentifrice composition (Y) at 25°C is When filled, it exhibits unique viscosity characteristics, effectively suppresses bubble entrapment, and provides good discharge. From the viewpoint of ensuring excellent shape retention while maintaining the extrusion properties, it is preferable to use a material with a hardness of 1500 dPa·s or more. More preferably, it is 1800 dPa·s or more, and even more preferably, it is 2500 dPa·s or more. Pa·s or more, preferably 3500 dPa·s or less, more preferably 320 The hardness is preferably 0 dPa·s or less, and more preferably 3000 dPa·s or less. The B8H viscosity (y2) of the polishing composition (Y) at 25°C is preferably 1500 to 3500 dP. a·s, more preferably 1800 to 3200 dPa·s, and further preferably 2500~3000dPa·s.

[0029] For the dentifrice composition (Y), the Helipath viscosity (y1) at 25°C and the B8H viscosity at 25°C The ratio ((y1) / (y2)) of the amount of water filled in the upright bottle container (X) is While expressing unique viscosity characteristics, the toothpaste composition (Y) in the container is free from air contamination until it is completely used up. From the viewpoint of effectively suppressing the occurrence of unnecessary bubble entrainment due to the above-mentioned reasons and ensuring good dischargeability and shape retention, It also prevents unnecessary adhesion of the composition to the nozzle outlet and flow passages, etc., ensuring smooth operation of the pump. From the viewpoint of ensuring the above, the ratio is 0.3 or more, preferably 0.4 or more, and more preferably 0. 0.5 or more, more preferably 0.55 or more, and less than 1, preferably 0. 0.95 or less, more preferably 0.9 or less, and even more preferably 0.8 or less. More preferably, it is 0.75 or less, and even more preferably, it is 0.62 or less. do. In the dentifrice composition (Y), the helipath viscosity (y1) at 25°C and the B The ratio ((y1) / (y2)) of the 8H viscosity (y2) is preferably 0.3 or more and less than 1. The ratio is preferably 0.4 to 0.95, more preferably 0.5 to 0.9, and even more preferably It is preferably 0.55 to 0.8, more preferably 0.55 to 0.75, and even more preferably The range is preferably 0.55 to 0.62.

[0030] In the dentifrice of the present invention, the occurrence of bubble entrainment is prevented until the dentifrice composition (Y) in the container is completely used up. From the viewpoint of effectively suppressing burrs and ensuring good ejection properties and shape retention, The content of the water-insoluble powder (yx) in Y) is less than 5% by mass, or the dentifrice composition (Y) does not contain the water-insoluble powder (yx). Here, "water-insoluble" means that the amount of a substance that dissolves in 100 g of water (at 20°C) is 1 g or less. This means:

[0031] Examples of such water-insoluble powders (yx) include anhydrous silicic acid, silica light calcium carbonate, heavy Calcium carbonate, zeolite, dibasic calcium phosphate, tribasic calcium phosphate, insoluble methacrylate Sodium pyrophosphate, aluminum hydroxide, magnesium phosphate, calcium pyrophosphate and magnesium carbonate. As the acid, abrasive silica with an oil absorption of 50 to 150 mL / 100 g and Examples of thickening silica include silica with an oil absorption of 200 to 400 mL / 100 g. The measurement method is JIS K5101-13-2( This refers to the value determined by the amount of boiled linseed oil absorbed according to the method established in 2004. do.

[0032] The content of water-insoluble powder (yx) is adjusted to exhibit unique viscosity characteristics while preventing bubble entrapment. In order to effectively suppress the formation of fluoride and to ensure good ejection properties and shape retention, five substances are contained in the dentifrice composition (Y). %, preferably 4.5% by mass or less, and more preferably 4% by mass or less. More preferably, it is 3% by mass or less, and even more preferably, it is 2% by mass or less. %, and more preferably 0.8% by weight or less, or the dentifrice composition (Y) is a water-insoluble powder. Does not contain the body (yx).

[0033] In particular, the content of the abrasive silica in the dentifrice composition (Y) is preferably 4.5% by mass. or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less. , may be 1 mass % or more. The content of the thickening silica in the dentifrice composition (Y) is preferably 2% by mass or less. More preferably, it is 1% by mass or less, and even more preferably, it is 0.4% by mass or less. Even more preferably, the polishing composition (Y) does not contain any thickening silica.

[0034] The dentifrice composition (Y) further contains ether in order to provide a composition that exhibits unique viscosity characteristics. It contains sodium carboxymethylcellulose (yA) with a degree of polymerization of less than 1. Here, the degree of etherification is the degree of etherification of three hydroxyl groups per cellulose unit. It is substituted with a carboxymethyl group (-CH2COONa) and can be removed by incineration. This is the value determined by

[0035] The degree of etherification of component (yA) effectively suppresses the occurrence of bubble entrapment, and provides good dischargeability and retention. From the viewpoint of expressing unique viscosity characteristics that can ensure formability, it is less than 1, preferably 0. 9 or less, more preferably 0.8 or less, preferably 0.5 or more, more preferably It is preferably 0.55 or more, and more preferably 0.6 or more.

[0036] The content of the component (yA) in the dentifrice composition (Y) is determined from the viewpoint of expressing a unique viscosity characteristic. The content is preferably 2% by mass or more, more preferably 2.5% by mass or more, and even more preferably or 3 mass % or more, preferably 5 mass % or less, and more preferably 4.5 mass % or less. % or less, and more preferably 4% or less by mass. The content of component (yA) is In the dentifrice composition (Y), the content is preferably 2 to 5 mass%, more preferably 2.5 to 4. It is 5% by mass, and more preferably 3 to 4% by mass.

[0037] The dentifrice composition (Y) ensures smooth flowability of the composition in the flow passage and maintains good dischargeability. From the viewpoint of maintaining the quality of the product, glycerin, propylene glycol, and polyethylene glycol are further added. Preferably, the composition contains one or more polyhydric alcohols (yB) selected from the group consisting of It is more preferable that the composition contains at least glycerin.

[0038] The content of the component (yB) in the dentifrice composition (Y) is preferably 10% by mass or more in total. More preferably, it is 12% by mass or more, and even more preferably, it is 15% by mass or more. %, preferably 35% by mass or less, more preferably 32% by mass or less, and even more preferably The content of the component (yB) in the dentifrice composition (Y) is 30% by mass or less. In total, the content is preferably 10 to 35% by mass, and more preferably 12 to 32% by mass. and more preferably 15 to 30 mass %. In particular, the content of glycerin in the dentifrice composition (Y) is preferably 5% by mass or more. More preferably, the content is 7% by mass or more, and even more preferably, the content is 10% by mass or more. More preferably, the content is 15% by mass or more, and more preferably, 30% by mass or less. The content of glycerin is preferably 25% by mass or less, and more preferably 20% by mass or less. The content of phosphorus in the dentifrice composition (Y) is preferably 5 to 30% by mass, more preferably The content is preferably 7 to 25% by mass, more preferably 10 to 20% by mass, and even more preferably The content is preferably 15 to 20 mass %.

[0039] The dentifrice composition (Y) further contains erythritol, in order to provide a composition that exhibits unique viscosity characteristics. ritol, mannitol, sorbitol, xylitol, maltitol, and trehalose It is preferable that the sugar alcohol (yC) contains one or more sugar alcohols selected from the group consisting of sugar alcohols (yC) and sugar alcohols (yC). Among them, the sugar is preferably selected from erythritol, mannitol, sorbitol, and maltitol. One or more of these are preferably selected from erythritol, sorbitol, and maltitol. It is more preferable to use one or more of the above-mentioned compounds.

[0040] The content of the component (yC) in the dentifrice composition (Y) is preferably 15% by mass or more in total. is preferably 20% by mass or more, more preferably 22% by mass or more, Preferably, the content is 25% by mass or more, more preferably 45% by mass or less, and even more preferably The content of the component (yC) is preferably 40% by mass or less, and more preferably 35% by mass or less. The total content of the dentifrice composition (Y) is preferably 15 to 45% by mass, and more preferably The content is preferably 20 to 45% by mass, more preferably 22 to 40% by mass, and even more preferably The content is usually 25 to 35 mass %.

[0041] In the dentifrice composition (Y), the occurrence of bubble entrapment is effectively suppressed, and good ejection properties and shape retention are achieved. In order to achieve the unique viscosity characteristics required for the above, the content of component (yB) and the content of component (yC) The mass ratio ((yB) / (yC)) of the content of It is preferably 0.5 or more, more preferably 0.6 or more, and more preferably 1.3 or less. It is preferably 1.2 or less, and more preferably 1.1 or less. The mass ratio ((yB) / (yC)) of the content of the component (yB) to the content of the component (yC) is preferably The ratio is preferably 0.4 or more and 1.3 or less, more preferably 0.5 to 1.2, and even more preferably The range is preferably 0.6 to 1.1.

[0042] The dentifrice composition (Y) further contains water (y In the present invention, the component (yD) water is preferably contained in the dentifrice composition. The water content of the toothpaste composition includes not only the purified water, etc., but also the water content of each of the ingredients. The total water content of the dentifrice composition (Y) is the total water content of the dentifrice composition (Y) containing water (yD). Each component is thoroughly dissolved or dispersed, and the dentifrice composition (Y) is placed in an upright bottle container (X). By filling the dentifrices, the desired effects can be fully exerted.

[0043] The content of the component (yD) in the dentifrice composition (Y) is preferably 30% by mass or more, More preferably, it is 32% by mass or more, and even more preferably, it is 35% by mass or more. The content is preferably 60% by mass or less, more preferably 57% by mass or less, and even more preferably 5 The content of the component (yD) in the dentifrice composition (Y) is preferably The content is preferably 30 to 60% by mass, more preferably 32 to 57% by mass, and even more preferably is 35 to 50 mass %.

[0044] The content of component (yD) is calculated from the amount of water added and the amount of water in the added components. It can also be calculated by, for example, measuring it with a Karl Fischer moisture meter. As a Karl Fischer moisture meter, for example, a trace moisture measuring device (manufactured by Hiranuma Sangyo Co., Ltd.) In this device, 5 g of the dentifrice composition is taken and dissolved in 25 g of anhydrous methanol. The suspension is suspended, and 0.02 g of the suspension is taken to measure the water content.

[0045] In the dentifrice composition (Y), the occurrence of bubble entrapment is effectively suppressed, and good ejection properties and shape retention are achieved. In order to achieve the unique viscosity characteristics required for the above-mentioned viscosity characteristics, the content of the component (yB) and the content of the component (yC The mass ratio of the total content of (yB) and (yC) to the content of component (yD) ({(yB)+(yC)} / (yD) ) is preferably 0.5 or more, more preferably 0.7 or more, and even more preferably is 0.75 or more, even more preferably 0.8 or more, and preferably 1.5 or less. is more preferably 1.4 or less, and even more preferably 1.3 or less. The quality of the total content of component (yB) and the content of component (yC) and the content of component (yD) The ratio ({(yB)+(yC)} / (yD)) is preferably 0.5 or more and 1.5 or less, More preferably, it is 0.7 to 1.4, even more preferably, it is 0.75 to 1.4, and even more preferably, it is 0.75 to 1.4. More preferably, it is 0.8 to 1.3.

[0046] The dentifrice composition (Y) further comprises a surfactant selected from an anionic surfactant and a nonionic surfactant. The composition may contain one or more surfactants such as those listed above. Examples of anionic surfactants include fatty acid salts such as oleates and laurates; lauryl sulfate; Salt, Myristyl Sulfate, Palmityl Sulfate, Stearyl Sulfate, Octyl Sulfate, Caprylic / Capric Triglyceride alkyl sulfates such as alkyl benzene sulfonates, α-olefin sulfonates phosphates, hydroxyalkanesulfonates and other alkylsulfonates; alkyl phosphates Alkyl phosphates, etc.; higher fatty acid sulfonated monoglyceride salts, isethionic acid fatty acids Ester salts; Polyoxyethylene monoalkyl phosphate salts; N-Acylamino acids, N-Acyl and one or more selected from the group consisting of luteaurin and salts thereof.

[0047] Nonionic surfactants include polyoxyethylene hydrogenated castor oil; sucrose fatty acid esters. sorbitan fatty acid ester; glycerin fatty acid ester such as monostearate glyceride ter; alkyl glucoside; monostearate decaglyceride; monomyristate decaglyceride Polyglycerol fatty acid esters such as glycerides; polyoxyethylene monoalkyl (or alkenyl ether, polyoxyethylene polyoxypropylene copolymer, polyoxyethylene Polyoxyethylene alkyl phenyl ethers such as ethylene nonyl phenyl ether; Fatty acid alkanolamides such as oil fatty acid diethanolamides; and polyethylene glycols. The fatty acid esters may be one or more selected from the group consisting of aryl fatty acid esters.

[0048] The content of the surfactant in the dentifrice composition (Y) is preferably 1% by mass or more, and more preferably It is preferably 1.5% by mass or more, more preferably 2% by mass or more, and preferably 3% by mass or less, more preferably 2.7% by mass or less, and even more preferably 2.5% by mass or less. The content of the surfactant in the dentifrice composition (Y) is preferably It is 1 to 3 mass%, more preferably 1.5 to 2.7 mass%, and further preferably 2 ~2.5% by mass.

[0049] The dentifrice composition (Y) may further contain other components than the above component (yA) within the range not impairing the effects of the present invention. The binder and / or viscosity modifier may be included. Stabilizers include carboxyvinyl polymers, acrylic acid / (meth)acrylic acid alkyl copolymers, and the like. Polymer-based binders such as polymers; hydroxyethyl cellulose, hydroxypropyl cellulose cellulose, hydroxypropyl methylcellulose and other hydroxycellulose derivatives; Carboxymethyl cellulose, ethyl cellulose, sodium alginate, etc. with a degree of polymerization of 1 or more gum, carrageenan, xanthan gum, sodium polyacrylate, pectin, agar, tra Gant gum, gum arabic, guar gum, karaya gum, locust bean gum, jeragam Examples of binders and / or viscosity modifiers include gum, tamalid gum, psyllium seed gum, etc. .

[0050] The total content of the binder and viscosity modifier other than the above component (yA) is ) is preferably 2% by mass or less, more preferably 1.8% by mass or less, More preferably, it is 1.5 mass % or less.

[0051] The dentifrice composition (Y) may further contain other ingredients than those mentioned above, provided that the effect of the present invention is not impaired. In addition, it contains fluoride, tocopherol acetate, glycyrrhetinic acid and other medicinal ingredients, and selenium chloride. It may contain antibacterial agents such as tylpyridinium, flavorings, sweeteners, coloring agents, etc.

[0052] The present invention can further be utilized as the following toothpaste kit. That is, the toothpaste kit of the present invention is provided with an airless pump member having a nozzle attached to a container body. An upright bottle container (X) connected to the top opening and a content of water-insoluble powder (yx) is less than 5% by mass or does not contain water-insoluble powder (yx), and Viscosity (y1) is 1300 dPa·s or more and 3000 dPa·s or less at 25°C. The ratio ((y1) / (y2)) of Helipath viscosity (y1) to B8H viscosity (y2) at 25°C A dentifrice kit comprising a dentifrice composition (Y) having a molecular weight of 0.3 or more and less than 1, The upright bottle container (X) is connected to the pump and the suction valve (x1-1) is opened. The dentifrice composition (Y) is inhaled through (x1-2), and the dentifrice composition is discharged from the nozzle outlet. (Y) is ejected by a mechanism; The initial filling rate of the dentifrice composition (Y) in the upright bottle container (X) is less than 100%. In addition, in the upright bottle container (X), the intake port (x1-1 ) is not immersed in the dentifrice composition (Y).

[0053] In relation to the above-mentioned embodiment, the present invention further provides the following upright bottle container filled with a dentifrice composition. A filled dentifrice and a dentifrice kit are disclosed. [1] An airless pump member equipped with a nozzle is connected to the upper opening of the container body. The upright bottle container (X) is filled with the dentifrice composition (Y) at an initial filling rate of less than 100%. A dentifrice comprising: The upright bottle container (X) is connected to the pump and the suction valve (x1-1) is opened. The dentifrice composition (Y) is inhaled through (x1-2), and the dentifrice composition is discharged from the nozzle outlet. (Y) is ejected by a mechanism; In the upright bottle container (X), the intake port (x1-1) is inserted into the toothpaste container before starting to use the toothpaste. It is not immersed in the composition (Y), In the dentifrice composition (Y), the content of the water-insoluble powder (yx) is less than 5 mass %, Or, it does not contain water-insoluble powder (yx) and has a helipath viscosity (y1) of 1300d at 25°C. The Helipath viscosity (y1) at 25°C is 2 Pa·s or more and 3000 dPa·s or less. The ratio ((y1) / (y2)) to the B8H viscosity (y2) at 5°C is 0.3 or more and less than 1. Toothpaste. [2] In an upright bottle container (X), a suction port (x1-1) is connected to a suction valve (x1-2). The distance (xd) to the More preferably, it is less than 35 mm, and even more preferably, it is less than 25 mm. and more preferably less than 20 mm, and even more preferably less than 15 mm. and more preferably less than 10 mm, and even more preferably less than 5 mm. , and more preferably less than 1 mm.

[0054] [3] Place a dip tube on the lower end of the airless pump component of the upright bottle container (X). When installing the dip tube, the length of the dip tube must be The distance to the bottom of the tube is preferably less than 43 mm, more preferably less than 35 mm. More preferably, it is less than 30 mm, and even more preferably, it is less than 20 mm. and more preferably the dentifrice according to [1] or [2] above, wherein the particle size is less than 18 mm. [4] The upright bottle container (X) is attached to the lower end of the airless pump member with a dip tube. It is even more preferable that the toothpaste according to any one of the above [1] to [3] has a configuration in which the toothpaste is not provided with a toothpaste. . [5] In the upright bottle container (X), the maximum pump pressure (x2) is preferably 1 0N or more, more preferably 20N or more, and even more preferably 30N or more. , preferably 100N or less, more preferably 80N or less, and even more preferably A dentifrice as set forth in any one of [1] to [4] above, which has a molecular weight of 50N or less. [6] The initial filling rate of the dentifrice composition (Y) in the upright bottle container (X) is 50 to 99 %, 60 to 95%, 65 to 90%, or 70 to The dentifrice according to any one of the above [1] to [5], which may be 85%. [7] The upright bottle container (X) is preferably in the form of a film container, and more preferably in the form of a pouch. The dentifrice according to any one of the above [1] to [6], more preferably in the form of a container.

[0055] [8] The dentifrice composition (Y) preferably has a helipath viscosity (y1) at 25°C of 1350d Pa·s or more, more preferably 1400 dPa·s or more, and even more preferably 1450 dPa s or more, and even more preferably 1500 dPa s or more; Preferably, it is 2500 dPa·s or less, more preferably, 2300 dPa·s or less. More preferably, it is 2000 dPa·s or less, and even more preferably, it is 1800 dPa·s or less. A dentifrice as set forth in any one of [1] to [7] above, which has a content of s or less. [9] The B8H viscosity (y2) of the dentifrice composition (Y) at 25°C is preferably 1500 dP More preferably, the viscosity is 1800 dPa·s or more, and even more preferably, the viscosity is 2 It is 500 dPa·s or more, preferably 3500 dPa·s or less, and more preferably is preferably 3200 dPa·s or less, and more preferably 3000 dPa·s or less. [1]~[8] Any one of the toothpastes.

[10] In the dentifrice composition (Y), the helipath viscosity (y1) at 25°C and the B The ratio ((y1) / (y2)) of the 8H viscosity (y1) to the 8H viscosity (y2) is preferably 0.4 or more, It is preferably 0.5 or more, more preferably 0.55 or more, and more preferably 0.9 5 or less, more preferably 0.9 or less, and even more preferably 0.8 or less. More preferably, it is 0.75 or less, and even more preferably, it is 0.62 or less. Any one of the toothpastes listed below [1] to [9].

[0056]

[11] In the dentifrice composition (Y), the content of the water-insoluble powder (yx) is less than 5% by mass. and is preferably 4.5% by mass or less, more preferably 4% by mass or less, More preferably, it is 3% by mass or less, even more preferably, it is 2% by mass or less, and even more preferably, it is 2% by mass or less. More preferably, the dentifrice composition (Y) is 0.8% by mass or less, or the dentifrice composition (Y) is water-insoluble powder (yx ) Any one of the above [1] to

[10] dentifrices not containing.

[12] The water-insoluble powder (yx) is anhydrous silicic acid, silica light calcium carbonate, heavy carbonate Calcium, zeolite, dibasic calcium phosphate, tribasic calcium phosphate, insoluble metal Sodium phosphate, aluminum hydroxide, magnesium phosphate, calcium pyrophosphate, and and magnesium carbonate, among which, as silicic anhydride, abrasive silica with an oil absorption of 50 to 150 mL / 100 g and abrasive silica with an oil absorption of 200 to 4 The above toothpaste

[11] contains thickening silica having a viscosity of 0.00 mL / 100 g.

[13] The content of abrasive silica in the dentifrice composition (Y) is preferably 4.5 mass %. % or less, more preferably 4% or less, and even more preferably 3% or less. The dentifrice according to any one of the above [1] to

[12] , which may contain 1% by mass or more.

[14] The content of thickening silica in the dentifrice composition (Y) is preferably 2% by mass or more. The content is preferably 1% by mass or less, more preferably 0.4% by mass or less. It is even more preferable that the dentifrice composition (Y) does not contain any thickening silica.

[13] Any one of the following toothpastes.

[0057]

[15] The dentifrice composition (Y) further comprises a carboxymethyl ceramide having a degree of etherification of less than 1. It is preferable that the composition contains sodium cellulose (yA), and such carboxymethylcellulose The degree of etherification of sodium phosphate (yA) is preferably 0.9 or less, and more preferably is 0.8 or less, preferably 0.5 or more, and more preferably 0.55 or more. The dentifrice according to any one of the above [1] to

[14] , wherein the viscosity is more preferably 0.6 or more.

[16] In the dentifrice composition (Y), the content of the component (yA) is preferably 2% by mass or more. More preferably, the content is 2.5% by mass or more, and even more preferably, the content is 3% by mass or more. It is preferably 5% by mass or less, more preferably 4.5% by mass or less, and even more preferably The dentifrice according to

[15] above, wherein the content is preferably 4% by mass or less.

[17] The dentifrice composition (Y) further comprises glycerin, propylene glycol, and polyethylene. The present invention further comprises one or more polyhydric alcohols (yB) selected from the group consisting of ethylene glycol. The dentifrice according to any one of the above [1] to

[0016] , more preferably containing at least glycerin.

[18] In the dentifrice composition (Y), the content of the component (yB) is preferably 1 in total. 0% by mass or more, more preferably 12% by mass or more, and even more preferably 15% by mass or more. % or more, preferably 35% by mass or less, and more preferably 32% by mass or less. , and more preferably 30% by mass or less.

[19] In the dentifrice composition (Y), the content of glycerin is preferably 5% by mass or more. is more preferably 7% by mass or more, and even more preferably 10% by mass or more, Even more preferably, it is 15% by mass or more, preferably 30% by mass or less, and more preferably The content of the above-mentioned

[17] or

[18] is preferably 25% by mass or less, and more preferably 20% by mass or less. is a toothpaste

[18] .

[0058]

[20] The dentifrice composition (Y) may further contain erythritol, mannitol, sorbitol, One or more sugar alkanes selected from xylitol, maltitol, and trehalose It is preferable that the cellulose contains yC, and erythritol, mannitol, sorbitol, etc. Preferably, one or more selected from the group consisting of erythritol, sol, and maltitol are used. More preferably, one or more selected from the group consisting of bitol and maltitol are included in the above [1] to

[19] Any one of the following toothpastes.

[21] In the dentifrice composition (Y), the content of the component (yC) in total is preferably 2 0% by mass or more, more preferably 22% by mass or more, and even more preferably 25% by mass or more. % or more, preferably 45% by mass or less, and more preferably 40% by mass or less. , and more preferably 35% by mass or less.

[22] In a dentifrice composition (Y), the content of component (yB) and the content of component (yC) are The mass ratio ((yB) / (yC)) is preferably 0.4 or more, and more preferably 0. 5 or more, more preferably 0.6 or more, and more preferably 1.3 or less. The dentifrice according to any one of the above

[17] to

[0021] , wherein the viscosity is preferably 1.2 or less, and more preferably 1.1 or less.

[23] The dentifrice composition (Y) preferably contains water (yD), and the component (y The content of D) is preferably 30% by mass or more, more preferably 32% by mass or more. More preferably, the content is 35% by mass or more, and more preferably, 60% by mass or less. The dentifrice according to any one of the above [1] to

[0022] , wherein the content is preferably 57% by mass or less, and more preferably 50% by mass or less.

[0059]

[24] In the dentifrice composition (Y), the content of component (yB) and the content of component (yC) The mass ratio of the total of (yB)+(yC)} / (yD) to the content of the component (yD) is preferably or 0.5 or more, more preferably 0.7 or more, and even more preferably 0.75 More preferably, it is 0.8 or more, and more preferably, it is 1.5 or less. The toothpaste according to the above

[23] , wherein the β-glucosidase activity is preferably 1.4 or less, and more preferably 1.3 or less. Agent.

[25] In the dentifrice composition (Y), the total amount of binders and viscosity modifiers other than component (yA) The content is preferably 2% by mass or less, more preferably 1.8% by mass or less, and More preferably, the content of the dentifrice is 1.5% by mass or less.

[26] An airless pump member equipped with a nozzle is connected to the upper opening of the container body. An upright bottle container (X) and a water-insoluble powder (yx) content of less than 5% by mass, or It does not contain water-insoluble powder (yx) and has a helipath viscosity (y1) of 1300 dP at 25°C. a·s or more and 3000 dPa·s or less, and the Helipath viscosity (y1) at 25°C and A toothpaste having a ratio (y1) / (y2) of 0.3 or more and less than 1 to the B8H viscosity (y2) at ℃. A dentifrice kit comprising a composition (Y), The upright bottle container (X) is connected to the pump and the suction valve (x1-1) is opened. The dentifrice composition (Y) is inhaled through (x1-2), and the dentifrice composition is discharged from the nozzle outlet. (Y) is ejected by a mechanism; The initial filling rate of the dentifrice composition (Y) in the upright bottle container (X) is less than 100%. In addition, in the upright bottle container (X), the intake port (x1-1 ) is not immersed in the dentifrice composition (Y). EXAMPLES

[0060] The present invention will be described in detail below with reference to examples. The content of each component in the dentifrice composition is expressed as mass %.

[0061] [Examples 1 to 4, Comparative Examples 1 to 4] As the upright bottle container, the following container sizes are used for Examples 1 to 4 and Comparative Examples 1 to 2 and 4. Using vessel A (a vessel not provided with a dip tube in the embodiment shown in FIG. 1), Comparative Example 3 was performed. For this purpose, container B (container equipped with a dip tube) was used. Each dentifrice composition was prepared according to the formulation shown in Table 1. The mixture was appropriately filled into each upright bottle container. Then, each measurement and evaluation were performed according to the following methods. went. In addition, in the case of container A, the inlet is immersed in the toothpaste composition in an upright position before use. Regarding container B, the inlet was filled with toothpaste composition in an upright position before use. It was soaked. The results are shown in Table 1.

[0062] Upright bottle container ·Container A Distance(xd):18mm Inner diameter of intake port (x1-1): 9mm Maximum pump pressure (x2): 38N Initial filling rate: 72% ·Container B Distance (xd): 58mm (dip tube length: 40mm) Inner diameter of intake port (x1-1): 9mm Maximum pump pressure (x2): 38N Initial filling rate: 72%

[0063] <Maximum pump pressure> Using a compression tester (M1000E, manufactured by MECMESHIN), the pump was Pressing the center of the button will determine the minimum time it will take to fully press the button. The maximum pushing force (N) was measured as the maximum pushing force of the pump. Indenter: circular indenter with a radius of 1 cm Pressure point: Center of pump button Compression speed: 50mm / min

[0064] Helipath Viscosity Each of the obtained dentifrice compositions was packed into a container for viscosity measurement and stored in an incubator at 25°C for 24 hours. Then, using a Helipath type viscometer (VISCOMETER TVB-10, manufactured by Toki Sangyo Co., Ltd.), The measurements were performed under the conditions of rotor TC, rotation speed 2.5 rpm, and 1 minute.

[0065] 《B8H viscosity》 Each of the obtained dentifrice compositions was packed into a container for viscosity measurement and stored in an incubator at 25°C for 24 hours. Then, using a B8H type viscometer (TVB-10R, manufactured by Toki Sangyo Co., Ltd.), the rotor was H7 and the rotation speed was The measurement was performed at 2.5 rpm for 1 minute.

[0066] 《Dischargeability》 After filling each upright bottle with 100 ml of each dentifrice composition shown in Table 1, The airless pump member was attached, sealed, and stored at 25° C. for 24 hours. Press the center of the button completely and extrude 1g. Check for extrusion properties, dripping or stringiness from the nozzle. The ink composition, ink composition, and ejection stability over time were evaluated according to the following contents and standards.

[0067] · Extrusion properties The degree of hardness of the pump felt when pressing the center of the pump button was evaluated. Ta. 1: I didn't feel any hardness at all 2: I didn't feel it was very hard. 3: Neither 4: Felt a little hard 5: I felt it was hard enough to be bothersome.

[0068] - Dripping or stringing from the outlet Press the center of the pump button to dispense the toothpaste composition onto the bristles of the toothbrush. The degree of dripping of the toothpaste composition and the degree of stringing between the nozzle and the tip of the toothbrush bristles. was observed and evaluated. 1: There is no dripping from the nozzle, and no stringiness between the nozzle and the tip of the toothbrush bristles. , the cut was good 2: There is no dripping from the nozzle, and almost no stringing between the nozzle and the tip of the toothbrush bristles. No, it cuts well. 3: There is a little dripping from the nozzle, and some stringiness between the nozzle and the tip of the toothbrush bristles. occurred 4: Dripping occurs at the nozzle, and strings form between the nozzle and the tip of the toothbrush bristles. did

[0069] Discharge stability over time After completely depressing the center of the pump button (initial discharge), After storing the pump for one week, press the center of the pump button again completely and measure the toothpaste around the nozzle. The change in ejection properties due to the presence or absence of adhesion of the composition was evaluated. 1: The toothpaste composition did not stick and was just as easy to dispense as the first time. 2: The toothpaste composition was slightly stuck, and although it was slightly harder than the first time, it was easy to dispense 3: The toothpaste composition was stuck, and it was harder than the first time and a little difficult to dispense. 4: The toothpaste composition was stuck and was harder to dispense than the first time.

[0070] 《Bubble Containment》 After filling each upright bottle with 100 ml of each dentifrice composition shown in Table 1, An airless pump member was attached, the container was sealed, and the container was stored at 25°C for 24 hours. The toothpaste composition is discharged from the discharge port until the toothpaste composition is exhausted. The number of times bubbles were entrapped was counted and a sensory evaluation was carried out. The results were rated according to the following criteria: This was used as an index to evaluate the foam entrapment suppression effect. The smaller the value based on the following criteria, the less foam entrapment there is. This means that the suppression effect is effectively exerted. 1: No issues with bubbles getting caught (less than 10 times of bubbles getting caught) 2: Foam entrapment was a bit of a concern (foam entrapment occurred 10 or more times but less than 20 times) 3: The foam entrapment was a little bothersome and felt strange (foam entrapment occurred 20 to 30 times) (less than once) 4: Foam entrapment was a concern (foam entrapment occurred 30 to 40 times) 5: I was very bothered by bubble entrapment (bubble entrapment occurred 40 times)

[0071] <Pump operability> After filling each upright bottle with 100 ml of each dentifrice composition shown in Table 1, The airless pump member was attached, sealed, and stored at 25° C. for 24 hours. The center of the button was pressed once, and the state in which the button returned to its original state was evaluated sensorily. The smaller the value based on the above, the better the fluidity of the dentifrice composition in the flow passage and the better the ejection properties. This allows the toothpaste composition in the container to be effectively used up without adversely affecting the operability of the pump. This means that it is possible to: 1: The button quickly returns to its original state 2: The button returns to its original state almost immediately 3: The button is a little slow to return to its original state 4: Buttons are slow to return to their original state

[0072] 《Shape retention》 Each upright bottle was filled with 115 g of each dentifrice composition shown in Table 1, and then the The Ares pump member was attached, sealed, and stored at 25°C for 24 hours. Approximately 2 g of the toothpaste composition was dispensed from the nozzle of the device onto the tip of the toothbrush bristles, and the toothpaste composition on the tip of the bristles was The fluidity and dripping of the toothpaste composition were visually checked, and the shape retention of the toothpaste composition was evaluated according to the following criteria: The smaller the value based on the following criteria, the better the shape retention of the dentifrice composition. means... 1: No flow at all 2: Almost no flow 3: It flows a little, but doesn't drip from the ends of the hair. 4: It started to flow immediately after being discharged and dripped down from the tip of the hair within 30 seconds. 5: Dripping from the tip of the hair immediately after ejection

[0073] [Table 1] [Explanation of symbols]

[0074] 1: Toothpaste 2: Container body 21: Top opening of container body 3: Airless pump parts 31: Pump 32: Nozzle 33:Dip tube x1-1: Inlet x1-2: Intake valve xd: Distance from the suction port to the suction valve

Claims

1. A toothpaste comprising an upright bottle container (X) in which an airless pump member equipped with a nozzle is connected to the upper opening of the container body, and a toothpaste composition (Y) filled to an initial filling rate of less than 100%, An upright bottle container (X) has a mechanism that, in conjunction with the operation of the pump, draws in the toothpaste composition (Y) from the intake port (x1-1) through the intake valve (x1-2) and discharges the toothpaste composition (Y) from the discharge port of the nozzle. In an upright bottle container (X), the intake port (x1-1) is not immersed in the toothpaste composition (Y) before the toothpaste is first used. A toothpaste composition (Y) in which the content of water-insoluble powder (yx) is less than 5% by mass, or does not contain water-insoluble powder (yx), the helical viscosity (y1) at 25°C is 1300 dPa·s or more and 3000 dPa·s or less, and the ratio of the helical viscosity (y1) at 25°C to the B8H viscosity (y2) at 25°C ((y1) / (y2)) is 0.3 or more and less than 1.

2. The toothpaste according to claim 1, wherein the toothpaste composition (Y) contains carboxymethylcellulose sodium (yA) having a degree of etherification of less than 1.

3. The toothpaste according to claim 1 or 2, wherein the toothpaste composition (Y) further contains one or more polyhydric alcohols (yB) selected from glycerin, propylene glycol, and polyethylene glycol.

4. The toothpaste according to claim 1 or 2, wherein the toothpaste composition (Y) further contains one or more sugar alcohols (yC) selected from erythritol, mannitol, sorbitol, xylitol, maltitol, and trehalose.

5. The toothpaste according to claim 2, wherein the toothpaste composition (Y) contains 2% by mass or more and 5% by mass or less of component (yA).

6. The toothpaste according to claim 4, wherein the mass ratio ((yB) / (yC)) of the content of component (yB) to the content of component (yC) in the toothpaste composition (Y) is 0.4 or more and 1.3 or less.

7. The toothpaste according to claim 4, wherein the toothpaste composition (Y) contains water (yD), and the mass ratio ({(yB) + (yC)} / (yD)) of the sum of the content of component (yB) and component (yC) to the content of component (yD) is 0.5 or more and 1.5 or less.

8. The toothpaste according to claim 1 or 2, wherein the distance (xd) from the intake port (x1-1) to the intake valve (x1-2) is less than 50 mm.

9. A toothpaste kit comprising: an upright bottle container (X) having an airless pump component equipped with a nozzle connected to the top opening of the container body; and a toothpaste composition (Y) having a water-insoluble powder (yx) content of less than 5% by mass, or not containing water-insoluble powder (yx), having a helical viscosity (y1) at 25°C of 1300 dPa·s or more and 3000 dPa·s or less, and a ratio of the helical viscosity (y1) at 25°C to the B8H viscosity (y2) at 25°C ((y1) / (y2)) of 0.3 or more and less than 1; An upright bottle container (X) has a mechanism that, in conjunction with the operation of the pump, draws in the toothpaste composition (Y) from the intake port (x1-1) through the intake valve (x1-2) and discharges the toothpaste composition (Y) from the discharge port of the nozzle. A toothpaste kit in which the initial filling rate of the toothpaste composition (Y) in the upright bottle container (X) is less than 100%, and in the upright bottle container (X), the intake port (x1-1) is not immersed in the toothpaste composition (Y) before the toothpaste kit is first used.

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