JP-7855420-B2 - Oral composition

Inventors

• 山本 悠
• 山口 継乃
• 江頭 健二
• 才木 脩平

Assignees

• ライオン株式会社

Dates

Publication Date

20260508

Application Date

20220621

Claims (6)

1. (A) At least one of 2-ethylhexyl palmitate and 2-ethylhexyl stearate, (B)(B-1) Anionic surfactant comprising at least one selected from the group consisting of alkyl sulfates, α-olefin sulfonates, acyl amino acid salts and acyl taurine salts , (B-2) A nonionic surfactant comprising at least one selected from the group consisting of polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene fatty acid ester, and polyoxyethylene polyoxypropylene copolymer , and (B-3) At least one surfactant selected from the group consisting of betaine-type amphoteric surfactants, (A) The content of component is 0.00004 to 6.0% by mass. (B) The content of component is 0.001 to 10% by mass. An oral composition in which the ratio (A/B) of the content of component (A) to the content of component (B) is 0.0001 to 400.
2. The oral composition according to claim 1, wherein the ratio (A/B) of the content of component (A) to the content of component (B) is 0.0003 to 400.
3. (B-1) is, Alkyl sulfates in which the number of carbon atoms in the alkyl group is 10 to 20 , Alpha-olefin sulfonates having 10 to 20 carbon atoms in the alkyl group, Acyl amino acid salts having 10 to 20 carbon atoms in the acyl group , and Acyl taurine salts in which the acyl group has 10 to 20 carbon atoms. The oral composition according to claim 1 or 2, comprising at least one selected from the group consisting of the following .
4. (B-2) is, Polyoxyethylene hydrogenated castor oil having an average number of ethylene oxide addition moles of 20 to 100 moles , Polyoxyethylene alkyl ethers having 14 to 18 carbon atoms in the alkyl chain and an average number of ethylene oxide addition moles of 15 to 30 moles , Polyoxyethylene polyoxypropylene fatty acid ester , and Polyoxyethylene polyoxypropylene copolymer The oral composition according to claim 1 or 2, comprising at least one selected from the group consisting of the following.
5. (B-3) is, Alkyldimethylaminoacetic acid betaine having 8 to 18 carbon atoms in the alkyl group, and Fatty acid amidopropyl betaine with acyl group having 8 to 18 carbon atoms. The oral composition according to claim 1 or 2, comprising at least one selected from the group consisting of the following .
6. An oral composition according to claim 1 or 2, which is a toothpaste or mouthwash.

Description

This invention relates to an oral composition. When functional ingredients such as disinfectants are incorporated into oral care compositions, it is essential that users fully experience their effects for sustained use and effective efficacy. For example, Patent Document 1 describes an oral care composition containing glycerophosphate or its salt, cetylpyridinium chloride, and benzethonium chloride, which exhibits an inhibitory effect on oral biofilm due to the glycerophosphates, and provides users with a strong sense of coating due to the inclusion of cetylpyridinium chloride and benzethonium chloride. Furthermore, Patent Document 2 describes a liquid oral care composition containing sodium chondroitin sulfate, dextranase, and polyoxyethylene alkyl ether, which exhibits a plaque formation inhibitory effect due to the inclusion of dextranase, provides users with a strong sense of coating due to the inclusion of dextranase, and improves shelf life due to the inclusion of polyoxyethylene alkyl ether. Japanese Patent Publication No. 2013-129619Japanese Patent Publication No. 2009-46449 [(A): Ethylhexyl compound] Component (A) is an ethylhexyl compound, and is either 2-ethylhexyl palmitate, 2-ethylhexyl stearate, or a combination thereof. By including component (A), together with component (B), the coating sensation on the tooth surface and gums can be enhanced, and a moisturizing sensation can be provided, resulting in a good user experience. 2-ethylhexyl palmitate is represented by the following chemical formula and is an ester of palmitic acid and 2-ethylhexyl alcohol (molecular weight 368.64). 2-ethylhexyl stearate is represented by the following chemical formula and is an ester of stearic acid and 2-ethylhexyl alcohol (molecular weight 396.69). (A) When component contains 2-ethylhexyl stearate, its content is preferably 0.000008% by mass or more, more preferably 0.00008% by mass or more, even more preferably 0.008% by mass or more, and even more preferably 0.02% by mass or more, based on the total oral composition (100% by mass). This can further enhance the coating sensation on the tooth surface and gums, and furthermore, it can efficiently provide and sustain a feeling of moisture. The upper limit is preferably 8.0% by mass or less, more preferably 4.0% by mass or less, even more preferably 1.0% by mass or less, and even more preferably 0.8% by mass or less. This allows for obtaining effects commensurate with the content. Therefore, the content of 2-ethylhexyl stearate is preferably 0.000008 to 8.0% by mass, more preferably 0.00008 to 4.0% by mass, even more preferably 0.008 to 1.0% by mass, and even more preferably 0.02 to 0.8% by mass. (A) When component contains 2-ethylhexyl palmitate, its content is preferably 0.000004% by mass or more, more preferably 0.00004% by mass or more, even more preferably 0.004% by mass or more, and even more preferably 0.01% by mass or more, based on the total oral composition (100% by mass). This enhances the coating sensation on the tooth surface and gums, and also efficiently provides and sustains a moisturizing sensation, resulting in a good user experience. The upper limit is preferably 4.0% by mass or less, more preferably 2.0% by mass or less, even more preferably 1.0% by mass or less, and even more preferably 0.4% by mass or less. This allows for obtaining effects commensurate with the content. Therefore, the content of 2-ethylhexyl palmitate is preferably 0.000004 to 4.0% by mass, more preferably 0.00004 to 2.0% by mass, even more preferably 0.004 to 1.0% by mass, and even more preferably 0.01 to 0.4% by mass. The content of component (A) is preferably 0.000004% by mass or more, more preferably 0.00004% by mass or more, and even more preferably 0.004% by mass or more, based on the total oral composition (100% by mass). The upper limit is preferably 12.0% by mass or less, more preferably 6.0% by mass or less, and even more preferably 2.0% by mass or less. Therefore, the content of component (A) is preferably 0.000004 to 12.0% by mass, more preferably 0.00004 to 6.0% by mass, and even more preferably 0.004 to 2.0% by mass. [(B): Surfactants] Component (B) is a surfactant. By including component (B), a coating sensation can be provided to the tooth surface and gums, and together with component (A), a moisturizing sensation can be provided. Component (B) is usually one or a combination of two or more selected from the group consisting of (B-1) anionic surfactants, (B-2) nonionic surfactants, and (B-3) amphoteric surfactants. When the composition is a mouthwash, component (B) preferably contains at least component (B-2), and more preferably is component (B-2). [(B-1) Anionic surfactants] Examples of anionic surfactants include alkyl sulfates, acyl amino acid salts, acyl taurine salts, α-olefin sulfonates, hydrogenated coconut fatty acid monoglyceride monosulfates, and lauryl sulfoacetate. The alkyl and acyl groups may be linear or branched, saturated or unsaturated, an