JPH0768108B2 - Oral composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to an oral composition containing an abrasive silicate, and more specifically, an astringency due to the addition of the abrasive silicate,
The present invention relates to an oral composition having improved powderiness and a good feeling in use.

Problems to be Solved by Conventional Techniques and Inventions Conventionally, abrasives to be blended in toothpaste include calcium-based abrasives such as dicalcium phosphate and calcium carbonate, aluminum-based abrasives such as alumina hydrate, and the like. Silicate-based abrasives such as silicic acid anhydride, aluminosilicate, and zirconosilicate are known. However, oral compositions such as toothpaste containing these silicates have a peculiar astringency based on the combination of silicates, and also have a peculiar powdery taste in the mouth, which makes the feeling of use very good. There is no problem.

Therefore, as a method for improving the oral composition containing these silicates, a method of adding amino acids or a polypeptide (JP-A-57-171909) and a method of adding an amide (JP-A-58). -118507 gazette) and the like have been proposed, and although these methods can improve the peculiar astringency due to the combination of silicates, all of these components give a peculiar taste as such. However, there is a problem in giving a free flavor to the oral composition.

The present invention has been made in view of the above circumstances, the astringency due to the addition of an abrasive silicate, the powderyness is improved, yet it is possible to impart a desired flavor, and the abrasive silicate has a good feeling in use. It is intended to provide a composition for oral cavity containing.

Means and Actions for Solving Problems The present inventors have conducted various studies in order to achieve the above-mentioned object, and as a result, oral cavity containing an abrasive silicate selected from amorphous hydrated synthetic amorphous silica and silicate. When a liquid higher aliphatic alcohol having 16 to 28 carbon atoms at room temperature (20 ° C.) is added to the composition for use, the peculiar astringency and powderiness of the abrasive silicate are improved, It has been found that this type of higher aliphatic alcohol is tasteless and odorless, and therefore, even if it is blended in the oral composition, the flavor is not impaired and the fragrance can be freely adjusted. That is, it has been conventionally known to incorporate lauryl alcohol, myristyl alcohol, stearyl alcohol, etc., which are solids at room temperature as higher aliphatic alcohols, into oral compositions (JP-A-59-101418). Alcohol has a poor effect of improving the astringency and powderiness of abrasive silicates, and these alcohols have a unique taste, improving the astringency and powderiness of abrasive silicates. However, this time, it is necessary to mask the off-taste of itself, but it has a carbon number of 16 to 28, is liquid at room temperature, has no taste and is odorless, and the high-grade aliphatic alcohol that does not impair the flavor is surprisingly polished. The inventors have found that the astringent composition has no astringency and powderiness, and that it has no taste and odor itself, and thus can be prepared into various desired oral compositions. Further, this higher fatty alcohol liquid at room temperature is less likely to be hydrolyzed when compounded in an oral composition such as a toothpaste, is stable, and does not affect other compounding ingredients, and fluoride, The present invention has been accomplished by finding that other active ingredients can be blended without any trouble, and therefore the higher aliphatic alcohol is very effective as a component of the oral composition.

Therefore, the present invention provides an oral composition containing 5 to 90% by weight of an abrasive silicate selected from amorphous hydrated synthetic amorphous silica and silicate, and a high-grade liquid state liquid having 16 to 28 carbon atoms at room temperature. Provided is a composition for oral cavity, which is characterized by containing an aliphatic alcohol.

The present applicant has previously proposed a perfume-containing composition characterized by containing a higher aliphatic alcohol having 16 to 28 carbon atoms and being liquid at room temperature as a perfume-holding agent (Japanese Patent Application No. 59-
No. 276632) is a new finding of the present inventors that the higher aliphatic alcohol improves the astringency and powderiness of abrasive silicates.

Hereinafter, the present invention will be described in more detail.

The composition for oral cavity of the present invention can be prepared as a dentifrice composition such as a toothpaste or a dentifrice, and contains a silicate as an abrasive.

Here, as the abrasive silicate, various amorphous hydrated synthetic amorphous silicas such as Zeo49, Zeodent113 (manufactured by Huber, USA),
Syloid AL-1,63,74,244 (WRGrace USA), NeosylET
(Manufactured by J. Crossfield & Sons in the UK), Sident12,12DS.3 (manufactured by Degussa, Germany), HSG756,755,750 (manufactured by Grace, USA) and SiO
₂ to Al, Zr, Mg, polyvalent metal is bonded silicate such as Ca, for example, aluminosilicates, zirconocene silicate, magnesium silicate, calcium silicate may be incorporated.

The blending amount of these silicates may be appropriately selected depending on the purpose of use, but is 5 to 90% (% by weight).

In the present invention, in order to improve the astringency and powderiness of the above-mentioned abrasive silicate, a higher aliphatic alcohol which has 16 to 28 carbon atoms and is liquid at room temperature (20 ° C.) is blended.

Here, examples of the alcohol include oleyl alcohol, eicosenol, docosenol, octadecenol, tetracosenol, 2-hexyldecanol, 2-octyldodecanol, 5,7,7-trimethyl-2- (1,3,3-
Trimethylbutyl) -1-octanol, isostearyl alcohol, and a mixture thereof include jojoba alcohol and the like, and those having at least one unsaturated bond and / or those having a branched structure are preferably used.

In addition, these alcohols may be used alone or in combination of two or more.

The blending amount of the above-mentioned higher aliphatic alcohol is not particularly limited, but 0.01 to 10% of the entire composition, particularly 0.05
It is preferable to be 3%. If the amount of the alcohol used is too small, the effect of suppressing the astringency and powderiness of the silicate is not sufficiently exerted, and if it is too large, there is no further enhancement of the effect, and the aroma of the oral composition is raised. Or foaming may be suppressed, and may be oily.

The composition for oral cavity of the present invention may be blended with components which are usually used depending on the type and the like.

For example, in the case of toothpaste, as abrasives other than silicate-based abrasives, abrasives such as dicalcium phosphate, calcium carbonate, calcium pyrophosphate, insoluble sodium metaphosphate, aluminum oxide, aluminum hydroxide, and resin are mixed. In addition to the silicate-based binder, binders such as sodium carboxymethyl cellulose, hydroxyethyl cellulose, alginate, carrageenan, gum arabic, and polyvinyl alcohol can be added.

Furthermore, thickeners such as polyethylene glycol, sorbitol, glycerin, propylene glycol, sodium lauryl sulfate, sodium dodecylbenzene sulfonate,
Surfactants such as hydrogenated coconut fatty acid monoglyceride sodium monosulfate, sodium lauryl sulfoacetate, sodium lauroyl sarcosinate, N-acyl glutamate, lauryl diethanolamide, sucrose fatty acid ester, saccharin sodium, stevioside,
Neohesperidyl dihydrochalcone, glycyrrhizin,
Ingredients such as sweeteners such as perillartine and p-methoxycinnamic aldehyde, preservatives, and dyes can be added. Further, as a fragrance, l-menthol, carvone,
Eugenol, anethole, spearmint oil, peppermint oil, etc. may be blended without limitation.

Further, oral compositions include chlorhexidine salt, dextranase, mutanase, sorbic acid, alexidine,
Hinokitiol, cetylpyridinium chloride, alkylglycine, alkyldiaminoethylglycine salt, allantoin, -aminocaproic acid, tranexamic acid,
Active ingredients such as azulene, vitamin E, water-soluble primary or secondary phosphates, quaternary ammonium compounds, and sodium chloride can also be added. Further, fluorides such as sodium fluoride, sodium monofluorophosphate, stannous fluoride and the like can be blended without being affected by the blending of the higher aliphatic alcohol.

The composition for oral cavity of the present invention can be filled in various containers, but since the alcohol described above suppresses permeation of perfume in a plastic container, the plastic container can be used without any trouble.

EFFECTS OF THE INVENTION According to the present invention, by blending a higher aliphatic alcohol that has a carbon number of 16 to 28 and is liquid at room temperature, the astringency and powderiness of the abrasive silicate are improved, and the feeling of use is improved. In addition, since the alcohol is tasteless and odorless, it is possible to freely adjust the fragrance by adding a desired flavoring agent.

Hereinafter, the present invention will be specifically described by showing Examples and Comparative Examples, but the present invention is not limited to the following Examples.

[Examples 1 and 2, Comparative Examples 1 and 2] Toothpastes having the formulations shown in Table 1 were prepared, and the feeling of use (astringency and powderiness) was sensory evaluated by 30 panelists. In addition, the evaluation was judged by whether or not the astringency and powderiness were felt when actually brushing the teeth using the toothpaste obtained from the panel, and it was determined by the number of people who felt the astringency and powderiness. The feeling of use of the toothpaste was judged based on the following criteria. The results are also shown in Table 1.

Evaluation criteria ○: 5 or less of 30 people feel astringency (or powderyness).

△: 5 to 20 or less out of 30 people feel astringency (or powderyness).

×: More than 20 out of 30 people feel astringent (or powdery).

From the results shown in Table 1, it is recognized that the higher aliphatic alcohol having 16 to 28 carbon atoms eliminates the astringency and powderiness of the silicate and improves the usability.

[Example 3] Toothpaste Abrasive silica 25.0% (Zirconosilicate, product of Taki Chemical Co., Ltd.) Polyethylene glycol 400 3.0 Sorbit 40.0 Sodium lauryl sulfate 1.2 Lauric acid diethanolamide 0.5 Sodium carboxymethylcellulose 1.2 Saccharin sodium 0.2 Perfume 0.9 Paraben 0.03 increase Viscous silica (Aerosil, manufactured by Deggussa) 2.5 Sodium monofluorophosphate 0.9 Oleyl alcohol 0.8 Water Residual 100.0% [Example 4] Toothpaste Abrasive silica (zirconosilicate) 20.0% Propylene glycol 4.0 Solbit 25.0 Glycerin 15.0 Sodium lauryl sulfate 0.8 sodium carboxymethyl cellulose 1.5 sodium saccharin 0.15 perfume 1.5 gelatin 1.0 paraben 0.01 tin fluoride 0.82 1.4 water remaining 100.0% jojoba alcohol 0.6 2-octyldodecanol [施例5] dentifrice Jun made toothpaste abrasive silica (Zeodent113) 75.0% Glycerin 18.0 Sodium carboxymethyl cellulose 0.2 Sodium lauryl sulfate 0.5 Sodium saccharin 0.05 Perfume 0.8 Sodium fluoride 0.1 2-hexyl decanol 0.8 Water remaining 100.0% Example 4-9 Both have no astringency or powdery taste,
It has a good usability.

Claims (5)

[Claims] 1. An oral composition containing an abrasive silicate selected from amorphous hydrated synthetic amorphous silica and silicate in an amount of 5 to 90% by weight of the total composition, at room temperature having 16 to 28 carbon atoms. An oral composition comprising a liquid higher aliphatic alcohol. 2. The composition according to claim 1, wherein the higher aliphatic alcohol has a branched structure. 3. The composition according to claim 1, wherein the higher aliphatic alcohol has at least one unsaturated bond. 4. The composition according to claim 3, wherein the higher aliphatic alcohol is jojoba alcohol. 5. The composition according to any one of claims 1 to 4, wherein the blending amount of the higher aliphatic alcohol is 0.01 to 10% by weight based on the whole composition.