JPH0434598B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a liquid cleanser composition containing a crystalline aluminosilicate and exhibiting little change in viscosity during storage. [Prior Art] Silica stone and calcium carbonate have been widely used as abrasives in liquid cleansers. Liquid cleansers using zeolite as an abrasive are also known (see JP-A-51-50909 and JP-A-55-5947). Although zeolite is excellent in that it does not easily damage the surface to be cleaned, it has the problem that stabilizing its dispersion in an aqueous medium over a long period of time is difficult compared to other conventional abrasives. In order to solve this problem, many studies have been conducted on dispersion stabilization. For example, a technology that uses smectite viscosity to stabilize the dispersion of zeolite (Japanese Unexamined Patent Application Publication No. 1983-1999)
No. 5947), technology to use acidic phosphates and neutral phosphates together as dispersion stabilizers (Japanese Unexamined Patent Publication No. 1987-
22908), technology using ammonium chloride and urea (JP 56-133399), technology using magnesium sulfate and/or sodium silicate (JP 57-16098), and hydroxycarboxylate. Techniques (Japanese Unexamined Patent Publication No. 57-100198, US Pat. No. 4,129,527) are known. [Problems to be Solved by the Invention] Although it is possible to stabilize the dispersion of a zeolite-containing liquid cleanser composition using these techniques, the viscosity of the composition during storage is There was a problem that the reduction was greater than when other abrasives such as silica stone or calcium carbonate were used. If the viscosity changes, the feeling of use will change, such as when applying the liquid to a vertical surface or pouring the liquid onto a sponge, which is undesirable. [Means for Solving the Problems] As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that the purpose can be achieved by using carbonate in a specific surfactant system. The present invention has been completed. That is, the present invention provides (a) higher fatty acid diethanolamide (b) alkylbenzene sulfonate in the total amount (a) + (b)
=4 to 8% by weight, weight ratio 3.0≧(a)/(b)>0.5, and further contains (c) polyoxyalkylene alkyl ether 0.1
~1% by weight (d) A crystalline aluminosilicate 3~ whose particle size distribution curve exists within the region delimited by two curves X and X' in the particle size distribution diagram shown in Figure 1. 40% by weight (e) A liquid cleanser composition characterized in that it contains 0.5 to 4% by weight of an alkali metal salt of carbonic acid. Examples of the higher fatty acid diethanolamide used as component (a) in the present invention include diethanolamides of fatty acids having 8 to 20 carbon atoms. Component (b) used in the present invention is preferably a linear or branched alkylbenzene sulfonate having an alkyl group of 8 to 23 carbon atoms, and counter ions include alkali metals, alkaline earth metals, alkanolamines, ammonia, etc. can be mentioned. Component (a) and component (b) are blended in a total amount of 4 to 8% by weight (hereinafter abbreviated as %). If it is less than 4%, foaming power, emulsifying and dispersing power, etc. will be insufficient, and if it exceeds 8%, the viscosity will become too high, which is not preferable. In order to stably disperse the zeolite, the weight ratio of components (a) and (b) should be 3.0≧
It is necessary that (a)/(b)>0.5. Outside this range, dispersion stability deteriorates. Component (c) used in the present invention is polyoxyethylene containing 1 to 20 moles of oxyalkylene, preferably 7 to 15 moles, and in which the alkyl is primary or secondary _C8 to _C22 . Alkyl ethers are preferred. Component (c) is blended in an amount of 0.1 to 1%. Outside this range, the object of the present invention cannot be achieved. The component (d) used as the abrasive in the present invention is type A,
X-type and Y-type zeolites can be used. The effect of suppressing viscosity reduction in the composition of the present invention is not significantly affected by the viscosity distribution of the zeolite. However, it is difficult to stabilize the dispersion of detergents with a large number of fine particles, which are generally used in laundry detergents, and do not have sufficient polishing power. On the other hand, those with many coarse grains tend to damage the target surface. Therefore, if component (d) having a particle size distribution within the range shown in FIG. 1 is used, a liquid cleanser composition with the best dispersion stability, detergency, and non-scratch property can be obtained. In preparing the particle size distribution curve shown in FIG. 1, the particle size was selected using a Coulter Counter (manufactured by Coulter Electronics). The curve X defines the limit for decreasing the particle size, and the curve X' defines the limit for increasing the particle size. Component (d) is blended in an amount of 3 to 40%. Component (e) used in the present invention is an alkali metal salt of carbonic acid, including sodium, potassium, and lithium salts. Other inorganic salts such as silicates and phosphates cannot suppress the decrease in viscosity. (e) component is 0.5-4%
It is blended. In carrying out the present invention, it is desirable to add a di- or tricarboxylic acid having 3 to 8 carbon atoms or a salt thereof as a dispersion stabilizer. Specific examples of di- or tricarboxylic acids having 3 to 8 carbon atoms or salts thereof include malonic acid, malic acid, tartaric acid, citric acid,
L-aspartic acid or a salt thereof. The amount of di- and tricarboxylic acid or its salt is preferably 0.1 to 5%, more preferably 0.5 to 3%. Furthermore, sodium silicate, such as sodium silicate No. 1, sodium silicate No. 2, sodium silicate No. 3, sodium silicate No. 4, sodium orthosilicate, sodium sesquisilicate, sodium metasilicate, and alkaline earth metal salts such as magnesium sulfate and potassium chloride. If used in combination, the dispersion stability will be further improved. Further, other abrasives such as silicon dioxide and potassium carbonate, solvents, hydrotropes, bactericidal agents, fragrances, pigments, dyes, etc. can be added as necessary. Examples of solvents include aliphatic monohydric alcohols such as ethyl alcohol and butyl alcohol, ethylene glycol, propylene glycol, polyethylene glycol, polypropylene glycol, or their lower aliphatic alcohols (methyl, ethyl,
) and ethers such as propyl and butyl. As the hydrotrope, paratoluene sulfonate, xylene sulfonate, cumene sulfonate, urea, etc. can be used. [Effects of the Invention] The zeolite-containing liquid cleanser composition of the present invention exhibits little viscosity change during storage. Furthermore, by using zeolite having a specific particle size distribution, it is possible to obtain a composition that has excellent detergency and excellent dispersion stability without damaging the surface to be cleaned. [Example] The present invention will be described below with reference to Examples, but the present invention is not limited to these Examples. The compositions shown in Table 1 were prepared, and the viscosity, storage stability, detergency, and scratch resistance of each composition were evaluated as follows. <Viscosity> The viscosity was measured immediately after blending and after storage at 20°C for one month using a B-type viscometer. <Storage stability> Place the sample in a 300 c.c. polyethylene bottle and
The dispersion stability was evaluated after being left at temperatures of 1 month at temperatures of 20°C, 20°C, and -5°C. ○...Does not separate △...Slightly separates ×...Completely separates <Cleaning power> Oil-denatured stains 10g of rapeseed oil/carbon black (weight ratio: 5/1) was applied to a 3x8cm iron test piece. The material was denatured at 150°C for 130 minutes. The evaluation method was to take 1 g of a sample, wash it 30 times with a urethane sponge under a load of 1 kg/30 cm ² , then calculate the relative cleaning rate from the weight loss rate, and perform a 5-level evaluation as shown below. Relative cleaning rate (%) 5...81-100 4...61-80 3...41-60 2...21-40 1...0-20 <Scratchability> Take 1 g of sample and apply it to a urethane sponge. After washing the FRP surface, which is the material of the bathtub, 30 times, the presence or absence of scratches was visually observed and evaluated. ○…Does not hurt ○△…Normally there is no problem, but if you rub it too hard it will hurt a little △…It will hurt a little ×…It will hurt

【table】

[Table] * Comparative example ** Particle size distribution of A, B, and C is shown in Figure 1.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a particle size distribution curve of crystalline aluminosilicate blended into a liquid cleanser composition.

Claims (1)

[Scope of Claims] 1 (a) Higher fatty acid diethanolamide (b) Total amount of alkylbenzene sulfonate (a) + (b)
=4 to 8% by weight, weight ratio 3.0≧(a)/(b)>0.5, and further contains (c) polyoxyalkylene alkyl ether 0.1
~1% by weight (d) A crystalline aluminosilicate 3~ whose particle size distribution curve exists within the region delimited by two curves X and X' in the particle size distribution diagram shown in FIG. 40% by weight (e) A liquid cleanser composition characterized in that it contains 0.5 to 4% by weight of an alkali metal salt of carbonic acid.