JPS61283696A - Detergent composition for bathroom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a bathroom cleaning composition.

(Prior art) Organic and inorganic stains such as fatty acid metal salts (especially alkaline earth metal salts), calcium phosphate, fats and oils, and putrid proteins adhere to bathrooms and bathtubs. As is well known, bathroom detergents are used, and the cleaning method involves impregnating a sponge etc. with the detergent and scrubbing. Conventionally, bathroom detergents use organic acids, surfactants (nonionic surfactants, anionic surfactants, etc.). acidic detergents mainly based on water-soluble solvents, neutral detergents mainly based on surfactants (nonionic surfactants, anionic surfactants), surfactants, alkanolamines or polyphosphates. There are alkaline detergents based on acid-like metal ion sequestering agents.

[Problem that the invention seeks to solve]

However, unlike other household stains, the stains in the bathroom are mainly made of metal soaps, especially calcium salts of fatty acids, and the aforementioned neutral detergents and alkaline detergents cannot dissociate the metal soaps, so they can be quickly removed. Unable to remove dirt satisfactorily. Acidic detergents are effective in removing these stains, but they have the drawback of not only re-attaching the stains after soul cleansing and making rinsing difficult, but also damaging materials with poor acid resistance, such as marble bathtubs and metals. . Furthermore, such acidic detergents have the problem of making the hands of housewives rough when actually doing the washing. Therefore, there is a need for a bathroom cleaning agent that can provide a satisfactory cleaning effect without damaging the materials or making hands rough, and there is also a need for a cleaning method that can reduce the labor required to clean particularly dirty bathtubs. It was getting worse.

[Means for solving problems]

The present inventors conducted a more detailed analysis of the dirt substances adhering to bathrooms, especially bathtubs, and found that fatty acid metal salts (the metal is Ca
, Mg, etc.) was about 70%, and free fatty acids (triglyceride, wax, squalene, etc.) was about 30%, and it was found that the free fatty acids acted as a binder and attached the fatty acid metal salt to the bathtub surface.

The inventors of the present invention conducted intensive studies to effectively clean the above-mentioned stains, and as a result, they discovered that a combination system of a cationic surfactant and a nonionic surfactant is extremely effective, and completed the present invention.

That is, the present invention uses a cationic surfactant of 0.1 to 3O
The present invention provides a bathroom cleaning composition containing 0.1 to 30% by weight of a nonionic surfactant and a pH of 5 to 10.

Among the cationic surfactants used in the present invention, preferred are quaternary ammonium salt type cationic surfactants having 1 to 3 linear or branched alkyl groups or alkenyl groups having 10 to 22 carbon atoms, In particular, the following general formula (1
) to (V).

(In the formula, R1 is a linear or branched alkyl group or alkenyl group having 10 to 20 carbon atoms, and X represents a halogen such as chlorine or bromine, or methyl sulfate or ethyl sulfate.) (In the formula, 1h and R8 are carbon atoms 10 to 20 linear or branched alkyl or alkenyl groups, and X is a halogen such as chlorine or bromine.

Represents methyl sulfate and ethyl sulfate. ) (wherein R4, Rs and R6 are straight chain or branched alkyl groups or alkenyl groups having 10 to 20 carbon atoms,
X represents a halogen such as chlorine or bromine, or methyl sulfate or ethyl sulfate. ) (In the formula, R7 is a linear or branched alkyl group or alkenyl group having 10 to 20 carbon atoms, and X represents a halogen such as chlorine or bromine, or methyl sulfate or ethyl sulfate.)C11° C2H4NHCOR9 (In the formula Rs and R'9 are linear or branched alkyl or alkenyl groups having 10 to 20 carbon atoms, and X represents a halogen such as chlorine or bromine, methyl sulfate, or ethyl sulfate. Among them, (I), (II) is particularly preferred.

The blending amount is 0.1 to 30% by weight, especially 0.5 to 15% by weight.
is preferred.

Further, the following can be mentioned as nonionic surfactants used in the present invention.

(1) Polyoxyethylene alkyl or alkenyl ether having an alkyl group or alkenyl group having an average carbon number of 10 to 20 and to which 1 to 20 moles of ethylene oxide is added.

(2) having an alkyl group with an average carbon number of 6 to 12, and 1
Polyoxyethylene alkylphenyl ether with ~20 moles of ether oxide added.

(3) Polyoxybrobylene alkyl or alkenyl ether having an alkyl group or alkenyl group having an average carbon number of 10 to 20 and to which 1 to 20 mol of propylene oxide is added.

(4) Polyoxybutylene alkyl or alkenyl ether having an alkyl group or alkenyl group having an average carbon number of 10 to 20 and to which 1 to 20 mol of butylene oxide is added.

(5) A nonionic surfactant (ethylene oxide and The ratio with propylene oxide or butylene oxide is 0.1/9.9-9.91
0.1. ) (6) Higher fatty acid alkanolamide or its alkylene oxide adduct represented by the following general formula (Vl).

(In the formula, R1° is an alkyl group or alkenyl group having 10 to 20 carbon atoms, R11 is H or CH3, and n is 1
An integer of ~30, m is an integer of O~3. ) (7) Sucrose fatty acid ester consisting of a fatty acid having an average carbon number of 10 to 20 and sucrose.

(8) Fatty acid glycerin monoester consisting of a fatty acid having an average carbon number of 10 to 20 and glycerin.

(9) Polyoxyethylene and polyoxypropylene block polymerization type surfactants represented by the following general formulas (■) and (■).

HO(C2114,0), -(C31160)b -
(CJ4.0)cH(■) (wherein a, b, c are 2
~20 integer. ) (In the formula, X+V is an integer of 2 to 20.) Among these, (1) is particularly preferred.

The blending amount is 0.1 to 30% by weight, preferably 0.5 to 20% by weight.
Good weight percentage.

In addition, optional ingredients such as thickeners, pigments, coloring agents, fragrances, bactericidal agents, preservatives, etc. can be added.

The remainder is water or a mixture of water and a water-soluble solvent.

The pH of the composition of the present invention is in the range of 5-10, preferably 6-8. Outside this range, problems such as rough hands may occur.
Undesirable.

The cleaning method using the composition of the present invention can be carried out by impregnating a sponge or the like with the composition and scrubbing the surface to be cleaned in a bathroom or bathtub, or by
Just spray it on the surface to be cleaned, leave it for a while, and then rinse with water. In addition, when cleaning the inside of the bathtub, a specific concentration of cationic surfactant and nonionic surfactant is added to the water remaining after bathing, and the water is left for a certain period of time, preferably the labor time, and then drained. If so, you can rinse the bathtub surface with water. The amount of cationic surfactant is 0.5 to 1100 ppm, preferably 10 to 60 ppm. This amount is 0.5pp
If it is less than m, the substitution reaction will not be carried out sufficiently, and if it is more than 1100 pp, decomposition or re-deposition of dispersed dirt will occur, making it impossible to obtain a sufficient effect. The amount of nonionic surfactant is 0.5 to 1100 ppm, preferably 10 to 80 ppm. If it is less than 0.5 ppm, no sufficient addition effect will be observed, and if it exceeds 1,100 ppm, it is not practically preferred in terms of rinsability. In addition, in the above-mentioned cleaning method for the bathtub, it is advantageous to use an appropriate amount of the composition of the present invention, but the composition is not limited thereto. For example, cationic surfactants and nonionic surfactants may be used. An appropriate amount may be added separately.

[For production]

The cleaning mechanism of the composition of the present invention can be considered as follows.

The cationic surfactant causes a substitution reaction with the metal ion of the fatty acid metal salt, decomposing the fatty acid metal salt, or forming a complex to improve the dispersibility of dirt. However, if only a cationic surfactant is used, the substitution reaction of the fatty acid metal salt with the metal ion is inhibited because free fatty acids remain. However, when a nonionic surfactant coexists, it is presumed that a satisfactory cleaning effect can be obtained because the dispersion effect can be further enhanced and the substitution reaction can be continuously promoted.

〔Effect of the invention〕

By using the bathroom cleaning composition of the present invention, soap scum adhering to bathroom floors, walls, bathtubs, etc. can be satisfactorily removed without damaging the materials. Also, you don't have to worry about your hands getting rough.

Furthermore, by using the bathroom cleaning composition of the present invention, a bathtub can be easily cleaned without the need for time-consuming sponge cleaning inside the bathtub.

〔Example〕

The present invention will be explained below with reference to Examples, but the present invention is not limited to these Examples.

Example 1 Acidic detergent using surfactant (nonionic surfactant, anionic surfactant) and malic acid as the acidic substance, only surfactant (nonionic surfactant, anionic surfactant) Neutral detergents using a surfactant (nonionic surfactant, anionic surfactant), an alkaline detergent using a water-soluble solvent and sodium ethylenediaminetetraacetate as a sequestering agent, and the product of the present invention ( A)
Table 1 shows the results of investigating the detergency and material damage properties of (B). The numbers in the table represent weight %.

The cleaning power was evaluated by gently scrubbing a cast iron enamel bathtub (zircon type) with bath stains that cannot be removed by scrubbing, using a sponge soaked in detergent, and determining which stains were easily removed by ○. Marks, and those in which almost no stain removal was observed were marked with an X mark and judged with the naked eye.

In addition, for material damage, the gloss condition of the surface of the cast iron enamel bathtub was similarly judged with the naked eye after the cleaning power test, and those where no change was observed were marked with an ○, and those where gloss had been lost and surface erosion was observed were marked with an X. And so.

As can be seen from the results in Table 1, acidic detergents using acidic substances have good cleaning power, but they are extremely damaging to materials, and the bathtub surface was damaged during the normal cleaning process. On the other hand, neutral detergents and alkaline detergents did not show any damage to the material, but their cleaning power was extremely poor and dirt could hardly be removed. Compared to these existing detergents, the product of the present invention had excellent cleaning power and no damage to materials.

Example 2 The acidic detergent, neutral detergent, alkaline detergent and products of the present invention (A) and CB) used in Example 1 were diluted 5 times to 4
The test subject's hands were immersed in the water for 20 minutes at 0°C, washed with tap water at 25°C for 3 minutes, and left to dry.The degree of roughness of the hands was observed 48 hours later.

The degree of roughness of the hands was evaluated on a five-point scale, with 0 points indicating no roughness at all and 4 points indicating severe roughness, and the average of 10 subjects was calculated for each grade. The results are shown in Table 2.

Table 2 Example 3 Residual water after bathing in a cast iron enamel bathtub (zircon type) with bath stains that cannot be removed by rubbing (40°C)
The various components shown in Table 3 were dissolved in the solution, left to stand for 1 hour, and then drained, and the bathtub surface was rinsed with water. The bathtub surface was judged with the naked eye, with most of the dirt removed as a mark ○, and those with no dirt removed as an X mark. The results are also shown in Table 3.

Note that the unit of concentration of each component in the table is ppm.

Claims (1)

[Claims] Contains 0.1 to 30% by weight of cationic surfactant and 0.1 to 30% by weight of nonionic surfactant, and has a pH of 5.
10. A bathroom cleaning composition characterized by having a rating of 10.