JPH1161184A - Slow solubilizing agent and solid detergent for toilet using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a slow solubilizing agent good in foaming properties and a detergent using the solubilizing agent, especially an agent for in-tank use and an agent for on-tank use good in the foaming properties. SOLUTION: This solid slow solubilizing agent composition is obtained by formulating at least one selected from an amidobetaine type amphoteric surfactant, an imidazolinium derivative type amphoteric surfactant and an amino acid derivative type amphoteric surfactant with an anionic surfactant and, as necessary, further a nonionic surfactant. The solid detergent is prepared by formulating the slow solubilizing agent composition therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slow dissolving agent for use as a solid detergent for flush toilets and a slimming agent for drainage equipment in kitchens and the like.

[0002]

2. Description of the Related Art There are two types of solid detergents for toilets: one that is left in a water storage tank of a flush toilet and one that is installed in a hand washing section at the top of the tank. A product mainly comprising a nonionic surfactant such as a coalescence or a derivative thereof and a product mainly comprising an anionic surfactant such as an alkylbenzene sulfonate are commercially available. These remove the dirt adhering to the toilet bowl by the action of a surfactant, and thus also play a role in masking offensive odors. However, non-ionic surfactant-based products have poor foaming properties, while anionic surfactant-based products have good foaming properties, and are left in the toilet tank (in-tank drug). Can be used, but the type that is installed in the hand washing section above the tank (on-tank drug) has the drawback that it is difficult to use in terms of shape retention and dissolution rate. Some nonionic surfactants are mixed with anionic surfactants, but their foaming properties are not sufficient, and some of them have reduced foaming when mixed with pigments, fragrances and dissolution retardants. .

[0003] Japanese Patent Application Laid-Open No. 2-145697 discloses a flush toilet composition containing a specific sulfobetaine and having an excellent effect of preventing contamination.
No. 331 discloses a skin cleanser characterized by containing a polyoxyethylene diester and an amphoteric and / or semipolar surfactant. Also, Japanese Patent Application Laid-Open
No. 252496 discloses an alkyldimethylaminoacetate betaine-type amphoteric surfactant, a hardly viscous anionic surfactant and a fatty acid diethanolamide as detergents having good foaming properties and less irritation to skin and hair. Although compositions containing a specific blending ratio have been proposed,
In any case, there is a problem or dissatisfaction in terms of shape retention, sustainability, and foamability when used as a solid detergent for toilets.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to a slow-dissolving agent having good foaming properties and excellent sustainability and shape retention properties, and a detergent using the same, especially an in-tank drug, and a foaming agent. The aim is to provide a good on-tank drug.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, it has been found that a foaming property can be improved by blending an anionic surfactant and a specific amphoteric surfactant. We have found that we can do this and completed the present invention. The present invention relates to an amidobetaine-type amphoteric surfactant, an imidazolinium derivative-type amphoteric surfactant and an amino acid derivative-type amphoteric surfactant and at least one anionic surfactant and, if necessary, a nonionic surfactant. A solid slow-dissolving agent composition characterized by incorporating an activator, and a solid detergent for toilet characterized by blending these slow-dissolving composition. In these cases, the foaming properties are excellent, and even if a fragrance, a colorant, or a dissolution retardant is added, the foamability is relatively small, and a sufficient foaming degree can be obtained.

The anionic surfactant used in the present invention is not particularly limited, but alkali metal salts such as alkylbenzenesulfonic acid and alkylsulfonic acid are preferred.
By adding the amphoteric surfactant described in the claims to these anionic surfactants, a high foaming slow-dissolving agent can be obtained. As an in-tank base, it can be used by tableting and the like. In this case, it is difficult to use the on-tank agent from the viewpoint of dissolution rate, so that it can be used by mixing the nonionic surfactant with the anionic surfactant and the amphoteric surfactant described in the claims. . As the nonionic surfactant used in the present invention, polyethylene glycol, ethylene oxide / propylene oxide copolymer, ethylene oxide or propylene oxide adduct of higher alcohol, ethylene oxide or propylene oxide adduct of polyhydric alcohol, nonylphenol Slowly soluble substances such as ethylene oxide and propylene oxide adducts, and derivatives thereof, may be mentioned. Preferred are polyethylene glycol, ethylene oxide / propylene oxide copolymer, ethylene oxide and propylene oxide adducts of higher alcohols, and derivatives thereof. Particularly preferred are polyethylene glycol having a molecular weight of 4000 or more, ethylene oxide / propylene oxide copolymer, and derivatives thereof.

[0007] The amphoteric surfactant used in the present invention is often commercially available as an aqueous solution. Therefore, when mixed with the nonionic surfactant, the anionic surfactant and the amphoteric surfactant are added to the molten nonionic surfactant as an aqueous solution, and the water is removed by heating, stirring and mixing. The method is preferable. Before melting the nonionic surfactant, all may be charged, and thereafter, the water may be removed by heating, melting and stirring. Further, the anionic surfactant is not limited to the aqueous solution, but may be mixed as a solid or paste. If cost is not an issue, the amphoteric surfactant may be mixed as it is in the form of powder. In this case, it is desirable that the nonionic surfactant is molten from the viewpoint of mixing properties. Examples of amphoteric surfactants include betaines having an amide bond in the molecule, such as coconut oil fatty acid amide propyl betaine, i.e., amide betaine type, betaine having an imidazolinium ring in the molecule such as laurylcarboxymethylhydroxyethyl imidazolinium betaine, That is, an amino acid-based activator such as imidazolinium type and sodium β-laurylaminopropionate, that is, an amino acid derivative type is preferable.

Although it is possible to use only one kind of anionic surfactant, two or more kinds of anionic surfactants can be used. The same can be said for nonionic surfactants and amphoteric surfactants. A dissolution retardant is further added to these surfactants,
It is possible to further reduce the dissolution rate. Preferred examples of the dissolution retardant include glycerides, fatty acids, fatty acid esters of high molecular weight polyethylene glycol, and fatty acid esters of pentaerythritol.

When used as a scented detergent for toilets, known dissolution retardants, flavors, preservatives, bleaching agents, pigments, extenders, and the like may be added, if necessary, in addition to the above-mentioned slow dissolving agents. Examples of the dissolution retarder include glyceride, fatty acid, fatty acid ester of high molecular weight polyethylene glycol, and fatty acid ester of pentaerythritol. In the present invention, glycerides and fatty acid esters of high molecular weight polyethylene glycol are preferred. Generally, the amount of addition is preferably 1 to 30% by weight of the total amount. Specific examples of the flavor include vegetable flavors such as lavender, lemon oil, rose oil, and green oil; animal flavors such as musk and civet; synthetic flavors such as aldehydes, esters, and ketones; and compounded flavors thereof. Is done. The addition amount is generally 3 to 20% by weight of the whole. Examples of the bleaching agent include an oxygen bleaching agent such as sodium perborate and sodium persulfate, and a chlorine bleaching agent such as chlorinated isocyanuric acid. Although the addition amount cannot be unequivocally determined depending on the formulation, it is 1 to 80% by weight, preferably 10 to 50% by weight. Examples of the dye include Blue No. 1, Blue No. 2, methylene blue, cyanine blue and the like. The amount of addition is generally 3 to 20% by weight of the whole. Examples of the extender include inorganic salts such as sodium sulfate and sodium carbonate, and organic substances such as urea. The amount added is generally 0 to 90% by weight of the whole. Other additives include chelating agents for removing dirt and calcium compounds in water, builders such as tripolyphosphoric acid, fillers such as talc, reinforcing agents such as solid epoxy compounds, ultraviolet absorbers, bactericides, and disinfectants. May be blended.

The slow-dissolving agent of the present invention further comprises a known bactericide,
A disinfectant can be blended to prepare a slimming agent for use in water distribution pipes or kitchen corners. In order to produce a fragrance detergent or a slimming agent for flush toilets using the slow dissolving agent of the present invention, each component is mixed under heating, and the mixture is extruded, injection-molded, liquid cast, compression-molded. It is molded into a predetermined shape using a conventional means such as a method. If necessary, a multi-layer structure may be used, or an adhesive molding may be performed on a supporting material. For example, in a spherical toilet cleaner, the outer layer having a large contact area with water is formed using a slow dissolving agent having a low dissolution rate, and a multilayered structure using a dissolving agent which is more easily dissolved toward the center is obtained over time. Thus, the amount of dissolution can be kept constant.

[0011]

EXAMPLES Specific examples of the present invention will be described below. However,
The present invention is not limited to specific examples. Example 1 80 parts of a copolymer of ethylene oxide and propylene oxide having a molecular weight of 15,000 was melted. 10 parts of sodium lauryl sulfate and 33.3 parts (10 parts in terms of dry weight) of a 30% aqueous solution of coconut oil fatty acid amidopropyl betaine are added, and the mixture is stirred at 120 ° C. for 2 hours. After confirming that water vapor is no longer generated, cool and use as a slow dissolving agent. Example 2 20 parts of polyethylene glycol distearate as a dissolution retarder was added to 80 parts of the slow dissolution agent obtained in Example 1,
Heated, melted and mixed. Then, it cooled and was set as the slow dissolving agent. Example 3 90 parts of the solubilizing agent obtained in Example 2 was melted, and 5 parts of Blue No. 1 and 5 parts of lemon oil were added to obtain a cooling and aromatic cleaning agent.

EXAMPLE 4 30 of the coconut fatty acid amidopropyl betaine of Example 1
% Aqueous solution was changed to 30% aqueous solution of sodium β-laurylaminopropionate, and the same operation was performed. Example 5 30 of the coconut fatty acid amidopropyl betaine of Example 1
% Aqueous solution was changed to a 30% aqueous solution of lauryl carboxymethyl hydroxyethyl imidazolinium betaine, and the same operation was performed.

Comparative Example 1 80 parts of a copolymer of ethylene oxide and propylene oxide having a molecular weight of 15,000 was melted. 20 parts of sodium lauryl sulfate are added, and the mixture is stirred at 120 ° C. for 2 hours, and cooled to obtain a slow dissolving agent. Comparative Example 2 20 parts of polyethylene glycol distearate was added as a dissolution retarder to 80 parts of the slowly dissolving agent obtained in Comparative Example 1,
Heated, melted and mixed. Then, it cooled and was set as the slow dissolving agent. Comparative Example 3 90 parts of the slow dissolving agent obtained in Comparative Example 2 was melted, and 5 parts of Blue No. 1 and 5 parts of lemon oil were added to obtain a cooling and aromatic cleaning agent.

Measurement of Foaming Degree A 0.1% by weight aqueous solution was prepared for each sample and measured at 25 ° C. by the Ross Miles method. Table 1 shows the evaluation results of Examples 1 to 5 and Comparative Examples 1 to 3. From Table 1, it can be seen that the amount of the active agent (sum of the anionic surfactant and the amphoteric surfactant) used in Example 1 and Comparative Example 1 is the same, but Example 1 is more foamable. The effect of the present invention can be seen from the fact that the degree is high. It can be seen that the foaming degree is improved by adding the amphoteric surfactant of the present invention.

[Table 1]

[0015]

According to the present invention, excellent durability and shape retention can be obtained.
In particular, a solid detergent for toilets having excellent foaming properties was obtained.

Claims (3)

[Claims] 1. An anionic surfactant comprising at least one selected from an amidobetaine-type amphoteric surfactant, an imidazolinium derivative-type amphoteric surfactant and an amino acid derivative-type amphoteric surfactant. Solid slow-dissolving agent composition. 2. An amidobetaine type amphoteric surfactant, an imidazolinium derivative type amphoteric surfactant and at least one selected from an amino acid derivative type amphoteric surfactant, an anionic surfactant and a nonionic surfactant. And a solid slow-dissolving agent composition. 3. A solid detergent for toilets, comprising the slow-dissolving agent composition according to claim 1.