Liquid Compositions for Oral Cavity

Abstract

The present invention relates to a liquid composition for the oral cavity, which contains the following components (A), (B), (C) and (D): (A) an oil-soluble flavor, (B) a cationic bactericide, (C) a sugar fatty acid ester, and (D) one or more compounds selected from the group consisting of polyglycerol fatty acid esters, polyoxyethylene hydrogenated castor oils, and sorbitan fatty acid esters. The present invention also pertains to a liquid composition for the oral cavity, which contains the following components (A), (B), (E) and (F): (A) an oil-soluble flavor, (B) a cationic bactericide, (E) a polyphosphoric acid or salt thereof, and (F) a polyglycerol fatty acid ester. The liquid composition for the oral cavity according to the present invention is excellent in the adsorption of the bactericide to teeth and the like, barely causes unpleasant odor, and is excellent in stability.

1 . A method for improving adsorption of a cationic bactericide to teeth, said method comprising applying, into an oral cavity, a liquid composition that comprises the following components (A), (B), (C) and (D)
 (A) an oil-soluble flavor,   (B) the cationic bactericide   (C) a sugar fatty acid ester, and   (D) a polyglycerol fatty acid ester in which the degree of condensation of glycerol is from 5 to 12 and the fatty acid is selected from the group consisting of lauric acid, myristic acid, palmitic acid and stearic acid, with the proviso that the content of anionic surfactant is 0 or 0.01 mass % or less in said composition.   
     
     
         2 . The method according to  claim 1 , wherein said liquid composition further comprises ethanol. 
     
     
         3 . The method according to  claim 1 , wherein said liquid composition further comprises one or more sugar alcohol compounds selected from the group consisting of erythritol, xylitol, ribitol, arabitol, galactitol, sorbitol, mannitol, maltitol, palatinit, lactitol, maltotriitol, isomaltotriitol, maltotetraitol, isomaltotetraitol, and reduced malt syrup. 
     
     
         4 . The method according to  claim 3 , wherein the total content (mass ratio) of said erythritol, xylitol and palatinit is ½ or greater of the total sugar alcohol content in said composition. 
     
     
         5 . The method according to  claim 1 , wherein said liquid composition further comprises one or more nonionic surfactants selected from the group consisting of polyoxyethylene hydrogenated castor oil and sorbitan fatty acid ester. 
     
     
         6 . The method according to  claim 1 , wherein a mass ratio of said component (C) sugar fatty acid ester to said component (D) polyglycerol fatty acid ester is from 10:1 to 1:5. 
     
     
         7 . The method according to  claim 1 , wherein the content of said component (C) sugar fatty acid ester is from 0.1 to 2 mass % and the content of said component (D) polyglycerol fatty acid ester is from 0.01 to 2 mass %. 
     
     
         8 . The method according to  claim 1 , wherein the method further comprises gargling with said liquid composition and spitting said composition out. 
     
     
         9 . A liquid composition for the oral cavity comprising the following components (A), (B), (C) and (D):
 (A) an oil-soluble flavor,   (B) the cationic bactericide   (C) a sugar fatty acid ester, and   (D) a polyglycerol fatty acid ester in which the degree of condensation of glycerol is from 5 to 12 and the fatty acid is selected from the group consisting of lauric acid, myristic acid, palmitic acid and stearic acid, with the proviso that the content of anionic surfactant is 0 or 0.01 mass % or less in said composition.   
     
     
         10 . The liquid composition according to  claim 9 , wherein a fatty acid moiety of said component (C) sugar fatty acid ester is selected from the group of lauric acid, myristic acid, palmitic acid, oleic acid and stearic acid and the sugar of said component (C) sugar fatty acid has 10 to 14 carbon atoms. 
     
     
         11 . The liquid composition according to  claim 9 , wherein said liquid composition further comprises ethanol. 
     
     
         12 . The liquid composition according to  claim 9 , wherein said liquid composition further comprises one or more sugar alcohol compounds selected from the group consisting of erythritol, xylitol, ribitol, arabitol, galactitol, sorbitol, mannitol, maltitol, palatinit, lactitol, maltotriitol, isomaltotriitol, maltotetraitol, isomaltotetraitol, and reduced malt syrup. 
     
     
         13 . The liquid composition according to  claim 12 , wherein the total content (mass ratio) of said erythritol, xylitol and palatinit is ½ or greater of the total sugar alcohol content in said composition. 
     
     
         14 . The liquid composition according to  claim 9 , wherein said liquid composition further comprises one or more nonionic surfactants selected from the group consisting of polyoxyethylene hydrogenated castor oil and sorbitan fatty acid ester. 
     
     
         15 . The liquid composition according to  claim 9 , wherein a mass ratio of said component (C) sugar fatty acid ester to said component (D) polyglycerol fatty acid ester is from 10:1 to 1:5. 
     
     
         16 . The liquid composition according to  claim 9 , wherein the content of said component (C) sugar fatty acid ester is from 0.1 to 2 mass % and the content of said component (D) polyglycerol fatty acid ester is from 0.01 to 2 mass %.