JP2000247851A - Coating agent for controlling coloration - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject coating agent which comprises an anionic polymer having a specific carboxy group content, hydrophilifys the surfaces of teeth and artificial teeth, facilitates the easy removal of the formed stains by simple brushing operations, can prevent the accumulation of the stains, and can control the coloration. SOLUTION: This coating agent comprises an anionic polymer having a carboxy group content of >=11.5 moles per kg of the polymer compound and/or the salt of the polymer. The anionic polymer has a mol.wt. of 20,000-4,000,000 and a concentration of 0.1-5%. An unsaturated carboxylic acid monomer forming the anionic polymer is preferably a monocarboxylic acid or a dicarboxylic acid (for example, acrylic acid or methacrylic acid). The coating agent can be added to compositions for oral cavities and artificial teeth (for example, toothpastes, mouthwashes or dental creams).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating agent for suppressing coloring of teeth and dentures.

[0002]

2. Description of the Related Art Conventionally, stains in the oral cavity due to stains, plaques, food debris, tobacco tar, etc. adhered and deposited on the tooth surface are mainly caused by the physical properties of abrasives incorporated in oral compositions such as dentifrices. Removal by action has been performed. However, there is a problem that a portion that cannot be reached by a toothbrush cannot be cleaned by a simple removal method using a physical action of an abrasive.

On the other hand, as a method of cleaning the oral cavity, a chemical method has been used in which the formation of plaque and tartar is suppressed by adding a medicinal ingredient. To control plaque, anionic, cationic, nonionic antibacterial agents that are effective against plaque-producing bacteria and have been confirmed to be safe in the oral cavity, and components that are effective in inhibiting bacterial adhesion Or a combination thereof (JP-A-63-30408 and JP-A-3-38512), and a combination of an enzyme that decomposes plaque itself (JP-A-57-165312).
No. 8-12543). On the other hand, in order to suppress tartar, a condensed phosphoric acid compound or chelating agent having a high ability to capture Ca ions, a linear low-molecular-weight polycarboxylic acid, and the like, and magnesium, barium, Formulation of strontium or the like alone or in combination (Japanese Patent Application Laid-Open No. 52-108029)
JP-A-61-151113).

[0004]

However, these conventional techniques are effective for cleaning dental plaque and tartar, which cause dental caries and periodontal disease, while keeping the oral cavity in a healthy state. The effect of preventing coloring was not sufficient. In fact, it is known that even in healthy teeth and periodontal environment without plaque and tartar, the tooth surface is colored by the taste of food, drink and smoking. Causes of such tooth surface coloration are polyphenols components derived from food and drink such as tea, coffee, and green tea, or metal ions such as Fe, certain drug components, cigarette tar from smoking, etc., and salivary protein. Has been found to be due to a stain resulting from denaturation. (S. Prayitno et al .: J. Period)
total Res. , 14, 411-417 (197)
9)) For such stain coloring, a water-soluble polyphosphate, a water-soluble pyrophosphate, an orthophosphate, or the like is used at a specific compounding ratio, and furthermore, a chemical compound is used in combination with a surfactant or the like. A composition having a high cleaning effect has been studied (Japanese Unexamined Patent Publication No.
-12437, JP-A-9-12438),
A reduction in the amount of the abrasive compound has been attempted. As a result, dirt can be removed by careful brushing.

[0005]

Means for Solving the Problems As a result of intensive studies, the present inventors have formulated an anionic polymer compound having a carboxyl group content of 11.5 mol or more per 1 kg of the polymer compound and / or a salt thereof. A coloring suppression coating agent characterized by being further characterized by blending the coloring suppression coating agent of the present invention, and a composition for oral cavity and denture without using an abrasive, even in a simple brushing operation, the tooth and The present inventors have found that the accumulation of stain on the surface of a denture can be prevented and the coloring by stain can be sufficiently suppressed, and the present invention has been accomplished. By coating with the coating agent and the composition for oral cavity and denture of the present invention, the surface of the teeth and dentures is hydrophilized, and the stain formed thereon is easily removed even by a simple brushing operation, and the accumulation of stain Can be prevented and coloring can be suppressed.

It is known that a carboxylic acid-based anionic polymer compound is blended in a composition for oral cavity. However, these proposals are based on a composition containing a large amount of an abrasive, a binder,
Mold retention agents or usability improvers (JP-A-55-40646)
JP-A-56-10108) or a plaque inhibitor (JP-A-61-165317, JP-A-3-38512) utilizing a high ability to capture Ca ions. The present invention was found for the first time to suppress the accumulation and coloring of stain by coating and hydrophilizing the surfaces of teeth and dentures with a carboxylic acid-based anionic polymer compound in a specific range of the present invention. Things.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. The colorant-suppressing coating agent of the present invention has a carboxyl group content per 1 kg of the polymer compound of 11.
It is characterized by containing a carboxylic acid-based anionic polymer compound and / or a salt thereof in an amount of 5 mol or more. The number of moles of the carboxyl group in this case represents the number of moles when the carboxylic acid-based anionic polymer compound is completely made into an acid form, and specifically, for example, can be obtained by the following operation, It is not limited to this method.

The carboxyl group-containing anionic polymer is completely replaced with an acid form by using a cation exchange resin or the like, and the content of the carboxyl group contained in 1 kg of the dry weight of the polymer is adjusted to NaOH or KO
Titration with H or ¹ H-NMR and ¹³ C-
It is calculated based on the value obtained by determining the carboxyl group content by NMR. In the case of titration with NaOH, the content of the carboxyl group is determined according to the formula 1, and the content is calculated per kg of the polymer.

Formula 1: Carboxyl group content (mol) = N × V / A A: Weight of complete acid-type polymer used for titration (g) N: Normality of NaOH used for titration (mol / l) V : Titration volume to end point (ml) The polymer compound is not limited to the acid type at the time of use, and one or more of lithium salt, sodium salt, potassium salt, triethanolamine salt and the like are used. Can be used in salts with cationic species.

The carboxyl group-containing anionic polymer compound of the present invention comprises a polymer of an unsaturated carboxylic acid and a salt thereof,
Or a natural polymer compound as it is or added,
Those obtained by introducing a carboxyl group using a reaction such as substitution or oxidation may be used. The unsaturated carboxylic acid monomer constituting the carboxylic acid-based anionic polymer compound is selected from monounsaturated carboxylic acids containing 3 to 9 carbon atoms and having at least one carboxyl group, anhydrides and salts thereof, Carboxylic acids and dicarboxylic acids are preferred.
Examples of such acids are acrylic acid, methacrylic acid, ethacrylic acid, α-chloroacrylic acid, crotonic acid, β-acryloxypropionic acid, sorbic acid, α-chlorosorbic acid, cinnamic acid, β-styrylacrylic acid , Muconic acid,
Itaconic acid, citraconic acid, mesaconic acid, glutaconic acid, aconitic acid, α-phenylacrylic acid, 2-benzylacrylic acid, 2-cyclohexacrylic acid, angelic acid, umbellic acid, fumaric acid, maleic acid, and their anhydrides Things. More preferred are acrylic acid, methacrylic acid, itaconic acid, maleic acid and maleic anhydride. The carboxyl group-containing anionic polymer compound of the present invention is a homopolymer of these carboxylic acid monomers or a copolymer thereof, or a copolymer with a monomer containing no carboxyl group within a range satisfying the conditions of claim 1. Become. Preferably, polyacrylic acid or a salt thereof, polymethacrylic acid or a salt thereof, acrylic acid-methacrylic acid copolymer or a salt thereof, acrylic acid-maleic acid copolymer or a salt thereof, acrylic acid-itaconic acid copolymer or The salt is given. Examples of those in which a carboxyl group is introduced as it is or by adding, substituting, or oxidizing a natural polymer compound, include carboxylated polysaccharides obtained by modifying cellulose, starch, dextran, pullulan, alginic acid, carrageenan, and the like. Is raised.

The molecular weight and the concentration of the carboxylic acid-based anionic polymer compound of the present invention affect the amount of carboxyl groups in the outermost layer when the tooth and denture surfaces are coated. The preferred molecular weight is 10,000 to 5,000,000, more preferably 20,000 to 4,000,000, and the concentration used is 0.05 to 10%. When used in this range of molecular weight and concentration, the carboxylic acid-based anionic polymer compound allows a large amount of carboxyl groups to be present in the outermost layer when coating the teeth and denture surfaces, and is more hydrophilic than ordinary teeth and denture surfaces. A modified surface can be obtained. Even if stains are formed on the surfaces of the coated teeth and dentures, water easily penetrates and is removed between the coating layer and the stain thereon, and the accumulation of stains can be suppressed.

The fact that the carboxylic acid-based polymer compound of the present invention is effectively adsorbed on the tooth surface and the denture surface to form a coating layer is determined by conducting an adsorption experiment and then performing X-ray photoelectron spectroscopy (hereinafter referred to as ESCA). It can be confirmed by performing elemental analysis by using A coating layer is formed only by bringing a disk-shaped hydroxyapatite plate, which is a model of the tooth surface, into contact with the sample solution of the present invention for a few minutes, and the coating layer remains effectively even by an operation such as rinsing. The coating agent of the present invention is not limited to the case where only one of the carboxylic acid-based anionic polymer compounds is blended, and may be blended with two or more polymer compounds in combination. Furthermore, by combining with a composition having a high chemical cleaning effect on the stains on the tooth surface and the denture surface, it is possible to obtain a composition for an oral cavity and a denture in which the stains such as calculus and plaque can be removed and the coloring due to stain can be suppressed. be able to.

The composition for oral cavity and denture to which the coating agent of the present invention is blended includes non-abrasive dentifrice, mouthwash,
Dental cream, dental pack, dental serum,
Denture cleaning agents, denture rinsing agents and the like are preferred. Viscous agents, surfactants, sweeteners, preservatives, fragrances, and other active ingredients such as antibacterial agents, antiplaque agents, and anticalculus agents, which are common components of the oral cavity and denture compositions. One or more,
Alternatively, an oxygen-based bleaching component such as potassium hydrogen persulfate or sodium perborate can be combined with tetraacetylethylenediamine or the like.

As the thickener, for example, one or more kinds of glycerin, sorbitol, polyethylene glycol, ethylene glycol, propylene glycol, 1,3-butylene glycol, xylit, maltitol and lactit are usually used in the oral composition. It is blended and used in the range of 1 to 90% of the whole. As the surfactant, an anionic surfactant, a cationic surfactant, a nonionic surfactant and the like can be blended, and specifically, sodium laurate,
Sodium α-olefin sulfonate, N-acyl sarcosinate, N-acyl glutamate, polyoxyethylene hydrogenated castor oil, sucrose fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan monostearate, 2-alkyl-N- Carboxymethyl-N-hydroxyethylimidazolinium betaine, N
-Acyl taurates, alkylol amides, pluronics and the like. The compounding amount is 0 to 10%, more preferably 0.1 to 5%.

As sweeteners, sodium saccharin,
Stevioside, stevia extract, neohesperidyl hydrochalcone, glycyrrhizin, perillartin, thaumatin, asparatyl phenylalanine methyl ester,
p-methoxycinnamic aldehyde, sucrose, lactose,
As preservatives such as fructose and sodium cyclamate,
p-Hydroxymethyl benzoic acid, p-hydroxyethyl benzoic acid, p-hydroxypropyl benzoic acid, p-hydroxybutyl benzoic acid, sodium benzoate, lower fatty acid monoglyceride and the like.

As the fragrance, winter green oil, spearmint oil, peppermint oil, sassafras oil, clove oil, eucalyptus oil, cassia oil, clove oil, thyme oil, sage oil, lemon oil, orange oil, peppermint oil, cardamom oil, Coriander oil, mandarin oil, lime oil, lavender oil, rosemary oil, laurel oil, chamomile oil,
Natural flavors such as caraway oil, marjoram oil, bay oil, lemongrass oil, origanum oil, pine needle oil, and menthol, carvone, annethole, cineole,
Methyl salicylate, cinamic aldehyde, eugenol, thymol, linalool, linalool acetate,
Single items such as limonene, menthone, menthyl acetate, pinene, octyl aldehyde, citral, pulegone, carbitol acetate, anisaldehyde, etc.
Single flavors such as ethyl acetate, ethyl butyrate, allylcyclohexanepropionate, methylanthraninate, ethylmethylphenylglycidate, vanillin, undecalactone, hexanal, ethyl alcohol, propyl alcohol, butanol, isoamyl alcohol and / or natural products Use of known flavors used in oral compositions such as strawberry flavor, apple flavor, banana flavor, pineapple flavor, grape flavor, mango flavor, tropical fruit flavor, butter flavor, milk flavor, fruit mix flavor, etc. And are not limited to the fragrances of the examples. Also, the amount is not particularly limited, but for many known examples, the perfume material contains 0.00001 to 1% by weight in the composition.
It is preferred to use. As a colorant, Blue No. 1,
Yellow No. 4, titanium dioxide and the like are exemplified.

Further, other components such as gelatin, peptone, arginine hydrochloride, albumin, casein, brightener, silicone and the like can be blended. Furthermore, as an antibacterial agent, an antiplaque agent, an anticalculus agent, or other active ingredients, epsilon aminocaproic acid, tranexamic acid, dextranase, amylase, protease, mutanase, lysozyme, enzymes such as lytic enzyme, retek enzyme, Sodium fluorophosphate, alkali metal monofluorophosphates such as potassium monofluorophosphate, sodium fluoride, ammonium fluoride, fluorides such as stannous fluoride, chlorhexidine salts, dihydrocholesterol, glycyrrhetin salts, glycyrrhetinic acid, chlorophyll, One or more active ingredients such as caropeptides, vitamins, anticalculus agents, antibacterial agents, antiplaque agents, hypersensitivity desensitizers such as potassium nitrate and aluminum lactate can be blended. In addition, the compounding amount of these components can be made into a usual amount as long as the effect of the present invention is not hindered.

[0017]

EFFECTS OF THE INVENTION The use of the color-suppressing coating agent of the present invention and the composition for oral cavity and denture without the use of an abrasive, characterized in that the color-suppressing coating agent is compounded, the surface of the tooth and the denture can be obtained. The formed stain is easily removed even by a simple brushing operation, and the accumulation of the stain on the teeth and the denture surface is prevented, and the coloring by the stain is sufficiently suppressed.

[0018]

EXAMPLES Hereinafter, the present invention will be described specifically with reference to experimental examples and examples, but the present invention is not limited to these examples. Confirmation of the adsorption of the coating agent of the present invention used in the examples on the tooth and denture surfaces was carried out by the following method. In the following examples, "%" indicates "% by weight". [Experimental Example] Hydroxyapatite disk (hereinafter referred to as HA plate,
Asahi Kogaku Co., Ltd., Φ7 × 3 mm) was immersed in a 0.1% aqueous solution of the coating agent of the present invention for 1 minute and then air-dried. After the treatment, the HA plate was fixed to a mouthpiece and mounted in the oral cavity (mandibular tongue side) to form a pellicle on the HA plate. This was placed in a device that alternately dipped in a stain solution having the following composition and dried in the air, and operated for 24 hours to deposit stain on the surface of the HA plate. <Stain solution composition> Ferrous chloride hydrate 0.05% Instant coffee 0.37% Instant black tea 0.37%

The HA plate to which the stain was attached and the HA plate which had been subjected to only surface treatment and had no stain attached were stained with a red coat (manufactured by BUTLER) to obtain a color difference (a).
Value), and according to Equation 2, the initial stain adhesion amount Δ
a was determined.

Formula 2: Stain initial adhesion amount (Δa) = color difference of HA plate after adhesion−color difference of HA plate before adhesion

Next, the stain-adhered HA plate was fixed in a cell of a brushing device, water was removed, and a brushing operation was performed. Until the stain was completely removed, reciprocating brushing 10 times → fuchsin staining → color difference measurement was repeated, and the number of brushing strokes when the initial adhesion amount and Δa became zero were determined. The smaller this amount is, the higher the stain removing effect is, the higher the effect of preventing coloring of the tooth surface and maintaining whitening is. Table 1 shows the results of evaluating the contact angle of the surface of the modified HA plate with water and the effect of removing stained pellicles. Comparative Example 7 shows the removal effect by brushing as a result of attaching stain to an untreated HA plate. In this case, even when the number of strokes reaches 500, the initial amount of adhesion Δa hardly changes, and the stain cannot be easily removed with mechanical force equivalent to brushing. On the other hand, in the experimental example of the present invention, all the strokes can be eliminated with a smaller number of strokes than in the comparative example 7. On the other hand, when the carboxyl group content of the polymer compound other than the present invention is low, almost no removal effect is exhibited as in Comparative Example 7.

[0021]

[Table 1]

Example 8 Using the Coating Agent of the Present Invention
The compositions for oral cavity and dentures of Nos. To 13 were prepared, and the effect of suppressing coloring by stain was evaluated. In each of the examples, simple brushing showed a good effect of removing stained pellicles, and it was confirmed that the effect of suppressing accumulation of stain was high. In addition, the fragrance | flavor A of Table 2 was used as a fragrance | flavor shown in an Example.
To G were used, and all showed good results.

[0023]

[Table 2]

Example 8 Non-Abrasive Toothpaste Sodium Polyacrylate (Molecular Weight 100,000) 5.0% Sodium Pyrophosphate 3.0% Sodium Tripolyphosphate 2.0% Sodium Carboxymethylcellulose 1.0% Sodium Lauryl Sulfate 1.5% Sorbit 30.0% Xylit 10.0% Sodium fluoride 0.22% Propylene glycol 3.0% Methyl paraben 0.05% Saccharin sodium 0.2% Purified water balance

Example 9 Non-Abrasive Toothpaste Sodium Polyacrylate (Molecular Weight 20,000) 5.0% Tetrasodium pyrophosphate anhydrous powder (particle size 200 μm) 5.0% Sodium bicarbonate 5.0% Carbonic acid Sodium 5.0% Sodium carboxymethylcellulose 1.0% Carrageenan 0.5% Sodium lauryl sulfate 3.0% Sorbit 10.0% Glycerin 40.0% Propylene glycol 5.0% Paraben 0.1% Saccharin sodium 0.1% Perfume 1.0% Purified water Remainder

Example 10 Non-Abrasive Toothpaste Acrylic Acid-Methacrylic Acid Copolymer 4.0% Tetrasodium pyrophosphate 2.5% Tetrapotassium pyrophosphate 1.5% Carrageenan 0.5% Sodium lauryl sulfate 1 0.5% sorbitol 10.0% glycerin 30.0% propylene glycol 5.0% sodium fluoride 0.22% dextranase (1 million U / G) 0.5% methyl paraben 0.02% sodium saccharin 0.2% Silk powder (average particle size 0.2mm) 10.0% Fragrance 1.0% Purified water Remainder

<Example 11> Dental cream Acrylic acid-maleic acid copolymer sodium salt 5.0% Sodium pyrophosphate 4.0% Sodium hexametaphosphate 1.2% Propylene glycol 3.0% Sorbit 30.0% Xylit 5.0% sodium saccharin 0.1% stevioside 0.1% potassium glycyrrhetinate 1.0% tranexamic acid 1.0% sodium lauryl sulfate 1.0% methyl paraben 0.05% flavor 1.0% purified water balance

Example 12 Dental Cream Acrylic Acid-Itaconic Acid Copolymer Sodium Salt 4.0% Sodium Pyrophosphate 4.0% Sodium Tetrapolyphosphate 1.0% Propylene Glycol 2.5% Sorbit 30.0% Glycerin 20.0% Carbomethylxycellulose sodium 1.5% Sodium lauryl sulfate 1.0% Lauroyl glycine potassium 0.5% Methyl paraben 0.05% Saccharin sodium 0.15% Fragrance 1.0% Purified water balance

Example 13 Dental Cream Sodium Polyacrylate (Molecular Weight 100,000) 5.0% Sodium Tripolyphosphate 2.0% Sodium Pyrophosphate 3.0% Propylene Glycol 2.5% Xylitol 30.0% Xanthan Gum 0 0.5% Carrageenan 0.5% Oxidized starch 1.0% Sodium lauryl sulfate 0.5% Sodium fluoride 0.22% Saccharin sodium 0.1% Fragrance 0.8% Purified water balance

Next, the HA plate was rubbed and rinsed with the dental pack composition of Example 14, and a stained pellicle was prepared in the same manner as in the experimental example. Examples 15 and 1
A stained pellicle was also formed on the HA plate after rinsing with the mouthwash composition of No. 6 or after applying the dental serum of Example 17 and rinsing with soft water, and stained when simple water brushing was performed. The pellicle removal effect was examined. It has been confirmed that the use of the embodiment of the present invention can be removed by simple brushing.

Example 14 Dental Pack Sodium Polyacrylate (Molecular Weight 3,000,000) 2.0% Tetrasodium Pyrophosphate 4.0% Sodium Ethylenediaminetetraacetate 1.0% Xylitol 20.0% Propylene Glycol 3.0% Sodium carboxymethyl cellulose 1.0% Sodium lauryl sulfate 0.3% Isopropyl alcohol 1.0% Sodium saccharin 0.1% Methyl paraben 0.05%

Example 15 Mouthwash sodium polyacrylate (molecular weight: 20,000) 0.5% sodium hexametaphosphate 0.5% potassium pyrophosphate 1.0% disodium hydrogenphosphate 0.5% ethanol 0% Sodium saccharin 0.05% Sodium monofluorophosphate 0.05% Chlorhexidine gluconate 0.01% Fragrance 0.3% Sodium lauryl sulfate 0.3% Sodium polyoxyethylene myristyl sulfate 0.3% Pigment 0.01% Sodium benzoate 0.05% Antioxidant 0.05% Purified water balance

Example 16 Mouthwash Acrylic acid-maleic acid copolymer 0.5% Potassium pyrophosphate 2.5% Sodium tetrapolyphosphate 2.0% Glycerin 3.0% Ethanol 10.0% Saccharin sodium 0 0.05% Sodium monofluorophosphate 0.05% Sodium lauryl sulfate 0.3% Sodium polyoxyethylene myristyl sulfate 0.3% Fragrance 0.3% Dye 0.01% Sodium benzoate 0.05% Antioxidant 0 .01% purified water balance

Example 17 Dental Beauty Serum Acrylic Acid-Maleic Acid Copolymer 1.0% Sodium Pyrophosphate 5.0% Sodium Tripolyphosphate 3.0% Xylit 5.0% Sodium Ethylenediaminetetraacetate 0.6% Saccharin sodium 0.05% Sodium monofluorophosphate 0.05% Dye 0.01% Fragrance 0.3% Antioxidant 0.01% Sodium benzoate 0.05% Purified water balance

Further, when the following Examples 18 to 21 are used, the stained pellicle removing effect on the denture is also improved as compared with the composition containing no coating agent of the present invention.
It was confirmed that it was good.

Example 18 Denture Cleanser (Tablets) Sodium Polyacrylate (Molecular Weight 20,000) 2% Potassium Hydrogen Persulfate 19% Sodium Perborate 35% Tetraacetylethylenediamine 2% Sodium Tripolyphosphate 10% Sodium Lauryl Sulfate 2% Sulfamine 5% Alcalase 1% Lactose 2% Sodium sulfate Balance

Example 19 Denture Cleanser (Tablet) Acrylic Acid-Methacrylic Acid Copolymer (Molecular Weight 20,000) 4% Potassium Monohydrogen Persulfate 10% Sodium Perborate 50% Tetraacetylethylenediamine 5% Sodium Tripolyphosphate 15 % Sodium lauryl sulfate 1% Alcalase 1% Lactose 2% Sodium sulfate Balance

<Example 20> Denture rinse agent Sodium polyacrylate (molecular weight: 20,000) 0.2% Acrylic acid-itaconic acid copolymer 0.3% Potassium pyrophosphate 5.0% Sodium tripolyphosphate 3.0% Ethanol 10.0% Chlorhexidine gluconate 0.01% Fragrance 0.3% Sodium lauryl sulfate 0.6% Dye 0.01% Sodium benzoate 0.05% Antioxidant 0.05% Purified water balance

<Example 21> Denture rinse agent Acrylic acid-maleic acid copolymer 0.5% Sodium hexametaphosphate 0.5% Potassium pyrophosphate 1.0% Disodium hydrogen phosphate 0.5% Ethanol 10.0 % Cetylpyridium chloride 0.01% Fragrance 0.3% Sodium lauryl sulfate 0.6% Dye 0.01% Sodium benzoate 0.05% Antioxidant 0.05% Purified water balance

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AB282 AB312 AB352 AB412 AB472 AC102 AC122 AC132 AC312 AC482 AC532 AC622 AC662 AC692 AC782 AC792 AC811 AC862 AD011 AD092 AD212 AD242 AD272 AD352 AD392 AD452 AD472 BB33 CC41 CC42 DD15 DD22 DD23 EE35

Claims (2)

[Claims] 1. A color-suppressing coating agent comprising an anionic polymer compound having a carboxyl group content of 11.5 mol or more per 1 kg of the polymer compound and / or a salt thereof. 2. A composition for an oral cavity and a denture which contains the coloring suppressing coating agent according to claim 1 and does not use an abrasive.