JP7149745B2 - Effervescent cleaning tablet - Google Patents

Description

The present invention relates to effervescent cleansing tablets. More specifically, the present invention relates to effervescent cleansing tablets with high hardness.

Conventionally, foaming detergents containing foaming agents can exert excellent cleaning action by utilizing the physical detergency of foaming action. Widely used for cleaning bottles. Effervescent detergents are provided in various solid forms such as tablets and granules. Among these forms, tablets are easy to handle and are widely accepted by consumers. ing.

In general, foaming detergents contain components such as bleaching agents, surfactants, disinfectants, fragrances, deodorants, etc., depending on the purpose of use, the cleaning action to be provided, and the like. In addition, since foaming detergents require a relatively large amount of foaming agent to ensure foaming properties, foaming detergents have a compositional feature that the proportion of foaming agent is high. .

On the other hand, effervescent solid detergents (effervescent detergent tablets) are required to have high hardness in order to prevent cracking, chipping, etc. during packaging and transportation. However, as mentioned above, effervescent solid detergents are characterized by a high content of effervescent agents. There is a drawback that it is difficult to provide sufficient hardness.

Conventionally, various reports have been made on techniques for producing effervescent cleansing tablets. For example, in Patent Document 1, an organic acid which does not substantially contain water or does not release water of crystallization at 50°C or less and polyethylene glycol are heated and melt-mixed at 60 to 100°C, and then stirred under predetermined conditions. By cooling and pulverizing while cooling, sodium bicarbonate and sodium carbonate are added to this, and tableting is performed, the amount of stabilizers, binders, release agents, etc. is reduced, and tablets are produced with good productivity. It is reported that a foaming detergent is obtained. However, Patent Document 1 does not disclose a formulation technique for imparting sufficient hardness to the effervescent cleansing tablet.

JP-A-62-89616

It is an object of the present invention to provide effervescent cleansing tablets with high hardness.

As a result of intensive studies by the present inventors, it was found that a cleaning composition containing a foaming agent contains a metal silicate as a binder, and the product of the content of the metal silicate and the specific surface area is 3.5 or more. It has been found that the resulting effervescent cleansing tablet can be provided with high hardness. The present invention has been completed through further studies based on such findings.

That is, the present invention provides inventions in the following aspects.
Section 1. An effervescent cleansing tablet comprising an effervescent agent and a metal silicate, wherein the product of the metal silicate content and the specific surface area is 3.5 or more.
Section 2. Item 2. The effervescent cleansing tablet according to Item 1, wherein the metal silicate has a specific surface area of 200 m ² /g or more.
Item 3. Item 3. The effervescent cleansing tablet according to Item 1 or 2, further comprising a surfactant.
Section 4. Item 4. The effervescent cleansing tablet according to any one of Items 1 to 3, which is used for cleaning dentures.

Since the effervescent cleansing tablet of the present invention can have a high degree of hardness, it can be prevented from being cracked or chipped during packaging, transportation, use (carrying), and the like.

The effervescent cleansing tablet of the present invention contains an effervescent agent and a metal silicate, and is characterized in that the product of the content of the metal silicate and the specific surface area is 3.5 or more. The effervescent cleansing tablet of the present invention is described in detail below.

[Blowing agent]
The effervescent cleansing tablet of the present invention contains an effervescent agent. The effervescent agent is included to provide effervescence when used with water in the effervescent cleansing tablet. Since the effervescent agent has hygroscopicity, in the prior art, this has been a factor in making the hardness of the effervescent cleansing tablet insufficient. It is possible to improve the hardness of the tablet while containing it.

The type of foaming agent used in the present invention is not particularly limited as long as it is non-toxic and physiologically acceptable, and is commonly used in detergents (i.e., those capable of generating carbon dioxide in water). ) can be widely used.

Examples of foaming agents include combinations of at least one of carbonates, hydrogencarbonates, and double salts of hydrogencarbonates and carbonates (hereinafter sometimes referred to as carbonate compounds) and acids. Carbonates are not particularly limited, but examples thereof include alkali metal salts of carbonic acid such as sodium carbonate and potassium carbonate. The hydrogencarbonate is not particularly limited, but examples thereof include alkali metal salts of hydrogencarbonate such as sodium hydrogencarbonate and potassium hydrogencarbonate. The double salt of carbonate and hydrogencarbonate is not particularly limited, and examples thereof include sodium sesquicarbonate. These carbonate compounds may be used singly or in combination of two or more. The acid is not particularly limited, and examples thereof include organic acids such as citric acid, tartaric acid, fumaric acid, malic acid, maleic acid, gluconic acid and succinic acid; inorganic acids such as phosphoric acid and sulfamic acid; . These acids may be used singly or in combination of two or more.

The carbonate compound constituting the foaming agent is preferably an alkali metal salt of hydrogencarbonate, more preferably sodium hydrogencarbonate. In addition, organic acids are preferred as the acid that constitutes the blowing agent.

In the blowing agent, the ratio of the carbonate compound and the acid is not particularly limited as long as they can react in water to generate carbon dioxide. , preferably 50 to 90 parts by weight, more preferably 50 to 85 parts by weight.

The content of the effervescent agent (the total amount of the carbonate compound and the acid) in the effervescent cleansing tablet of the present invention may be appropriately set depending on the degree of effervescence to be imparted, and is, for example, 40 to 95% by weight. , preferably 50 to 80% by weight, more preferably 50 to 75% by weight.

[Metal silicate]
The effervescent cleansing tablet of the present invention contains a metal silicate. In the effervescent cleansing tablet of the present invention, the metal silicate is blended so that the product of its content and specific surface area is 3.5 or more, thereby increasing the hardness of the effervescent cleansing tablet. fulfill The content rate mentioned above is the weight ratio of the silicate metal salt when the weight of the effervescent cleansing tablet is taken as 1, and the unit of the specific surface area is m ² /g. In the present invention, two or more metal silicate salts having different specific surface areas (these two or more metal silicate salts may have the same or different compositions) are used as the metal silicate. When it is included, the sum of the product of the content of each silicate metal salt and the specific surface area is 3.5 or more. The lower limit of the sum of the products of the metal silicate content and the specific surface area is preferably 7 or more. In addition, the upper limit of the total sum of the product of the content of the silicate metal salt and the specific surface area is not particularly limited, but the raw material mixture before tableting has good fluidity, and the tablet is added to water. It is preferably 30 or less, more preferably 18 or less, from the viewpoint that turbidity in water after dissolution is less likely to occur.

In the present invention, the reason why the hardness of the effervescent cleansing tablet is improved when the product of the content of the silicate metal salt and the specific surface area is 3.5 or more is not clear, but the raw material mixture was tableted. Occasionally, the silicate metal salt particles (secondary particles) contained in the raw material mixture are disintegrated, and the rearranged fine particles (primary particles) in the tablet form a network, which is thought to improve hardness. With a combination in which the product of the content of the acid metal salt and the specific surface area is 3.5 or more, the metal silicate having a primary particle size of a certain size is present in a certain amount. It is believed that the primary particles are able to form a sufficient network during tableting.

The silicate metal salt used in the present invention is a salt composed of silicon dioxide and a metal oxide, and specifically includes zinc silicate, aluminum silicate, hydrated aluminum silicate, kaolin (main component is hydrous aluminum silicate), potassium aluminum silicate (also known as potassium aluminosilicate), sodium aluminum silicate (also known as sodium aluminosilicate, more specifically sodium aluminum orthosilicate), zeolites (mainly crystalline aluminosilicate, more Specifically, synthetic sodium aluminosilicate) potassium silicate, calcium silicate (more specifically, calcium metasilicate), calcium sodium silicate, calcium aluminum silicate (specifically, calcium aluminum aluminodisilicate), Zirconium silicate, strontium silicate, sodium silicate, barium silicate, magnesium silicate, talc (mainly hydrated magnesium silicate), magnesium calcium silicate, lithium silicate (more specifically, lithium metasilicate) , magnesium aluminosilicate (more specifically, magnesium aluminometasilicate) and the like. Among these, aluminum silicate, magnesium silicate, and magnesium aluminosilicate are preferred from the viewpoint of better improving the hardness of the tablet. Magnesium silicate is particularly preferred from the viewpoint of improving the fluidity of the mixture. These metal silicates may be used singly or in combination of two or more.

The specific surface area of the metal silicate is not particularly limited as long as the product of the content and the specific surface area is 3.5 or more, preferably 200 m ² /g or more, more preferably 250 m ² /g or more. are mentioned. ^The upper limit of the specific surface area of the metal ^silicate is not particularly limited. The specific surface area refers to the specific surface area (BET specific surface area) measured by the BET method using the nitrogen adsorption method. The BET method is a method of determining the monomolecular layer adsorption amount of nitrogen on an adsorption isotherm, determining the surface area from the cross-sectional area of the adsorbed nitrogen molecules, and calculating the specific surface area (BET specific surface area) of the sample. Measurement by the BET method can be performed using various BET measurement devices.

The content of the silicate metal salt is not particularly limited as long as the product of the content and the specific surface area is 3.5 or more. , more preferably 1% by weight or more, and particularly preferably 1.5% by weight or more. The upper limit of the content of the metal silicate is not particularly limited, but is, for example, 5% by weight or less, preferably 4% by weight or less, and more preferably 3% by weight or less.

The ratio of the silicate metal salt and the effervescent agent is not particularly limited, but from the viewpoint of improving the tablet hardness, the content of the silicate metal salt is preferably 1 to 100 parts by weight with respect to 100 parts by weight of the effervescent agent. 10 parts by weight, more preferably 1.5 to 7 parts by weight, more preferably 2 to 5 parts by weight.

[Surfactant]
The effervescent cleansing tablet of the present invention preferably contains a surfactant in order to enhance detergency. By containing a surfactant in addition to an effervescent agent, the hardness of the effervescent cleansing tablet tends to be further insufficient, but the effervescent cleansing tablet of the present invention can improve the tablet hardness. Therefore, tablet hardness can be effectively improved even when a surfactant is contained.

The type of surfactant to be incorporated in the effervescent cleansing tablet of the present invention is not particularly limited as long as it can be used as a component of the cleansing agent. Any amphoteric surfactant may be used.

Specific examples of cationic surfactants include quaternary ammonium salts such as alkyl (C6-C20) trimethylammonium salts, dialkyl (C6-C20) dimethylammonium salts, and alkyl (C6-C20) dimethylbenzylammonium salts. salts, alkyl (C6-C20) amine salts, alkyl (C6-C20) amine ethylene oxide adducts, alkylpyridinium salts and the like. These cationic surfactants may be used singly or in combination of two or more.

Specific examples of anionic surfactants include linear alkylbenzene sulfonates having an alkyl group having an average carbon number of 10 to 16, alkenyl sulfonates having an average of 10 to 20 carbon atoms in one molecule, an average Linear alkylsulfoacetate having an alkyl group of 10 to 20 carbon atoms, alkyl sulfate having an alkyl group of an average of 10 to 20 carbon atoms, alkanesulfonate having an average of 10 to 20 carbon atoms in one molecule, etc. is mentioned. These anionic surfactants may be used singly or in combination of two or more.

Specific examples of nonionic surfactants include higher alcohol ethylene oxide adducts, alkylphenol ethylene oxide adducts, fatty acid ethylene oxide adducts, polyhydric alcohol fatty acid ester ethylene oxide adducts, and higher alkylamine ethylene oxide adducts. , fatty acid amide ethylene oxide adducts, fatty acid ethylene oxide adducts and polypropylene glycol ethylene oxide adducts, and polyethylene glycol surfactants, as well as glycerol fatty acid esters, pentaerythritol fatty acid esters, sorbitol and sorbitan fatty acid esters, Polyhydric alcohol surfactants such as fatty acid esters of sugars, alkyl ethers of polyhydric alcohols, and fatty acid amides of alkanolamines are included. These nonionic surfactants may be used singly or in combination of two or more.

Specific examples of amphoteric surfactants include amino acid-type surfactants such as alkylaminopropionates having an alkyl group having an average carbon number of 10 to 16 (for example, sodium laurylaminopropionate), and average carbon number 10 to 16. Alkyldimethylbetaine having an alkyl group of (lauryldimethylbetaine, stearyldimethylbetaine, etc.), betaine-type surfactants such as laurylhydroxyethylbetaine, and the like. These amphoteric surfactants may be used singly or in combination of two or more.

Examples of the salt form of the various surfactants include alkali metal salts such as sodium and potassium, alkaline earth metal salts such as magnesium and calcium, ammonium salts, amine salts, and acid addition salts such as hydrochlorides. mentioned.

Among these surfactants, anionic surfactants are preferred. These surfactants may be used singly or in combination of two or more.

When a surfactant is contained in the effervescent cleansing tablet of the present invention, the content thereof may be appropriately set according to the type of surfactant to be used, the detergency to be provided, and the like. 1 to 10% by weight, preferably 0.5 to 5% by weight, more preferably 1 to 3% by weight.

[Other ingredients]
The effervescent cleansing tablet of the present invention may contain silicon dioxide in addition to the ingredients mentioned above. Silicon dioxide can be added for the purpose of, for example, suppressing tableting trouble, increasing the amount of foaming, improving the speed of foaming, and controlling disintegration time. In addition, the effervescent cleansing tablet of the present invention may further contain other additives as necessary for the purpose of enhancing detergency, imparting disintegration properties, imparting moldability, and the like.

Other additives that can be incorporated into the effervescent cleansing tablet of the present invention include bleaching agents, chelating agents, enzymes, fragrances, binders, excipients, rust inhibitors, pH adjusters, coloring agents, and foam stabilizers. agents, preservatives, antibacterial/bactericidal agents, preservatives, lubricants, extenders, disintegrants, stabilizers, and the like. These additives may also be used individually by 1 type, and may be used in combination of 2 or more types. The content of these additives may also be appropriately set according to the purpose.

Examples of bleaching agents include oxygen bleaching agents, chlorine bleaching agents, reducing bleaching agents, and the like.

Examples of oxygen-based bleaching agents include hydrogen persulfate, persulfate, percarbonate, perborate, and tetraacetylethylenediamine. Specific examples of hydrogen persulfate include alkali metal salts such as lithium salt, sodium salt and potassium salt; alkali metal salts such as barium salt; ammonium salts; and hydrates thereof. The hydrogen persulfate may be a hydrogen sulfate, a double salt with a sulfate, or a mixture thereof. When it is a double salt or a mixture, it is particularly preferred, for example, a mixture of potassium hydrogen persulfate, potassium hydrogen sulfate and potassium sulfate. Specific examples of persulfates include alkali metal salts such as sodium salts and potassium salts; ammonium salts; and hydrates thereof. Specific examples of percarbonate salts include alkali metal salts such as sodium salts and potassium salts; ammonium salts; and hydrates thereof. Specific examples of perborates include alkali metal salts such as sodium salts and potassium salts; ammonium salts; and hydrates thereof. These oxygen bleaching agents may be used singly or in combination of two or more.

Examples of chlorine-based bleaching agents include hypochlorite and dichloroisocyanurate. Specific examples of hypochlorites include alkali metal salts such as sodium salts and potassium salts. Specific examples of dichloroisocyanurates include alkali metal salts such as sodium salts and potassium salts. These chlorine bleaching agents may be used singly or in combination of two or more.

Specific examples of reducing bleaching agents include thiourea dioxide and hydrosulfite. These reducing bleaching agents may be used singly or in combination of two or more.

Chelating agents include ethylenediaminetetraacetic acid, polyphosphoric acid, pyrophosphoric acid, and salts thereof, preferably pyrophosphoric acid and salts thereof. Furthermore, pyrophosphate and its salts include tetrasodium pyrophosphate, sodium dihydrogen pyrophosphate and the like, preferably sodium dihydrogen pyrophosphate. These chelating agents may be used singly or in combination of two or more.

Enzymes include protease, alcalase, amylase, lipase, dextranase, mutanase, glucanase and the like. These enzymes may be used singly or in combination of two or more.

Flavors include menthol, salicylic acid, carvone, and various essential oils such as spearmint, peppermint, and peppermint oil. These perfumes may be used singly or in combination of two or more.

Binders include polyvinylpyrrolidone, poly(oxyethylene) (molecular weight 20,000-500,000), polyethylene glycol (molecular weight about 1000-50,000), carbowax (molecular weight 4,000-20,000), Examples include nonionic surfactants, carboxymethylcellulose sodium, hydroxypropylcellulose, hydroxypropylmethylcellulose, cellulose, gelatin, clay, and saccharides such as lactose, glucose, xylitol and sorbitol. These binders may be used singly or in combination of two or more.

[Dosage form/physical properties]
The dosage form of the effervescent cleansing tablet of the present invention is tablet-like. Tablet-type effervescent detergents are inherently in a dosage form that is prone to breakage, chipping, etc. during packaging, transportation, use (carrying), etc., but the effervescent detergent tablets of the present invention are expensive. Since it is possible to provide hardness, it is possible to suppress the occurrence of such cracks, chipping, and the like.

The shape and size of the effervescent cleansing tablet of the present invention may be appropriately set according to the object to be cleaned. In particular, relatively small tablets are inherently difficult to improve in hardness, but the effervescent cleansing tablets of the present invention have improved hardness, so even relatively small tablets can be effective. Hardness can be improved. From such a viewpoint, the effervescent cleansing tablet of the present invention has a weight per tablet of, for example, 1 to 20 g, preferably 1 to 10 g, more preferably 1 to 4 g, further preferably 2 to 3 g. It is particularly suitable for relatively small tablets. More specific examples of such relatively small tablets include effervescent cleansing tablets (denture cleaners) used for cleansing dentures.

The effervescent cleansing tablet of the present invention has high hardness, and has properties capable of suppressing cracking, chipping, and the like during packaging and transportation. Specifically, the hardness of the effervescent cleansing tablet of the present invention is 50N or higher, preferably 55 to 98N, more preferably 60 to 98N, still more preferably 80 to 98N, particularly preferably 95 to 98N. . Specific conditions for measuring the hardness of the effervescent cleansing tablet of the present invention are as shown in Examples.

[Cleaning target/How to use]
Objects to be washed with the effervescent cleansing tablet of the present invention are not particularly limited, but examples thereof include dentures, eyeglasses, drain pipes, sinks, washing tubs, bathtubs, toilets, and stainless steel bottles. Among these objects to be washed, a preferable object to be washed is dentures.

The method of using the effervescent cleansing tablet of the present invention is the same as for conventional effervescent cleansing tablets. For example, when cleaning dentures or eyeglasses, the cleaning target may be immersed in water to which the effervescent cleaning tablet of the present invention has been added. In addition, if the object to be washed is a drain pipe, a sink, a washing tub, a bathtub, a toilet, a stainless steel bottle, etc., the effervescent washing tablet of the present invention is put into the object to be washed, and the object to be washed is washed. Running water or stored water is sufficient.

[Production method]
Effervescent cleansing tablets of the present invention may be prepared according to known methods. For example, by subjecting a raw material mixture obtained by mixing a foaming agent and a metal silicate, a surfactant added as necessary, and other ingredients added as necessary to a molding step for tableting, the present Effervescent cleansing tablets of the invention can be manufactured.

The method for tableting the effervescent cleansing tablet of the present invention is not particularly limited, but it can be carried out using, for example, a single punch tablet machine, a rotary tablet machine, a high-speed rotary tablet machine, and the like. In addition, the pressing force for tableting is not particularly limited as long as tableting is possible. good.

EXAMPLES The present invention will be specifically described below by way of examples, but the present invention is not limited to these examples.
1. Manufacture of effervescent cleansing tablets (denture cleanser)
Effervescent cleansing tablets (denture cleanser) having compositions shown in Tables 1 and 2 were produced. Specifically, first, raw materials other than the metal silicate were weighed, and the weighed raw materials were stirred and mixed with a Loedige mixer (model number: M20, manufacturer: Matsubo). Next, the mixed raw material was subdivided into zipper bags, metal silicate and sodium carbonate were added and mixed, and the mixture was sieved with an opening of 850 μm to obtain a raw material mixture. The resulting raw material mixture was tableted at 6.5 tons using a die with a diameter of 25 mm to produce 2.65 g per effervescent cleansing tablet (denture cleanser).

2. Measurement of Specific Surface Area The specific surface area of the metal silicate was measured using a BET method (three-point method) with a fully automatic gas adsorption measuring device (AUTOSORB-1-C, manufactured by Quantachrome).

3. Evaluation of tablet hardness The hardness (breaking strength) of 3 tablets for effervescent cleansing was measured with a hardness meter (tablet hardness meter 6D: manufactured by DR. SCHLEUNIGER PHARMATRON), and the average value was calculated. Taking the hardness of the effervescent cleansing tablet of Comparative Example 1 as 100, the relative hardness of each effervescent cleansing tablet was calculated, and the tablet hardness was classified according to the following criteria.
<Determination Criteria for Hardness Improvement Effect>
◎: The relative value of hardness is 150 or more ○: The relative value of hardness is 130 or more and less than 150 △: The relative value of hardness is 120 or more and less than 130 ×: The relative value of hardness is less than 120

4. Results The results obtained are shown in Tables 1 and 2. The tablets for effervescent cleansing in which the product of the metal silicate content and the specific surface area was 3.5 or more (Examples 1 to 8) exhibited excellent tablet hardness. On the other hand, the effervescent cleansing tablets (Comparative Examples 2 to 11) in which the product of the metal silicate content and the specific surface area was less than 3.5 did not provide satisfactory hardness. The hardness of the effervescent cleansing tablets of Examples 1, 4, 6 and 7 is 95 N or more, and the hardness of the effervescent cleansing tablets of Examples 2, 3, 5 and 8 is 80 N or more and less than 95 N, All had sufficient hardness to withstand packaging and distribution.

Claims (3)

a blowing agent comprising a combination of a carbonate compound and an acid , and a metal silicate;
The product of the content of the silicate metal salt and the specific surface area is 3.5 or more ,
The metal silicate has a specific surface area of 200 m ² /g or more,
The silicate metal salt is aluminum silicate,
An effervescent cleansing tablet (provided that a nonionic surfactant having a melting point of 40° C. or less, silica and Al ₂ O ₃ (excluding tablets containing granules of an inorganic compound containing and a mixture containing 2. The effervescent cleansing tablet of Claim 1 , further comprising a surfactant. The effervescent cleansing tablet according to claim 1 or 2 , which is used for cleaning dentures.