JPH058240B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for preparing a stabilized liquid cleaning agent by sealing an aqueous liquid cleaning agent having a specific composition into a container through a specific filling nozzle, and furthermore, Specifically, suspension stability can be improved by filling an aqueous liquid composition containing a surfactant, water-insoluble solid particles, and a thickener into a container through a nozzle with a specified ejection hole diameter and number of ejection holes. The present invention relates to a filling method for an improved liquid cleaning agent. BACKGROUND ART Conventionally, liquid cleaning agents for cleaning vegetables, dishes, and other kitchens have been mainly composed of compositions that utilize only the cleaning power of surfactants. However, although this type of cleaning agent has excellent cleaning power for cleaning vegetables and stains such as liquid oil and semi-solid oil, it does not clean food that has been burnt, dried and solidified due to food cooking, solid oil, or baking oil. It has the disadvantage of relatively weak cleaning power against such substances, and for this reason, various liquid cleaning agents containing water-insoluble solid particles such as abrasives have recently been proposed. However, although these liquid cleaning agents are desirable because they have a combination of normal cleaning power for removing non-stick stains and abrasive power for removing sticky stains, they are The disadvantage is that the water-insoluble solid particles that are contained in the liquid are precipitated. For this reason, many attempts have been made to stably suspend these water-insoluble solid particles in a surfactant solution. 54-117506) or a method of stabilizing enzymes using clay minerals (Japanese Patent Application Laid-Open No. 159297/1982). However, these methods are not necessarily fully satisfactory as means for stably suspending water-insoluble solid particles. In view of these circumstances, the present inventors have conducted intensive research to preserve liquid cleaning agents containing water-insoluble solid particles in a state with extremely good dispersion stability. Focusing on the fact that the stability of the liquid detergent composition varies significantly depending on the form of the nozzle used when filling the composition into a container, we developed an aqueous detergent containing a predetermined amount of a surfactant, water-insoluble solid particles, and a thickener. The inventors have discovered that the object can be achieved by filling a liquid composition into a container through a nozzle with a specified ejection hole diameter and number of ejection holes, and have completed the present invention based on this knowledge. That is, the present invention provides an aqueous liquid detergent containing (A) 1 to 50% by weight of a surfactant, (B) 1 to 60% by weight of water-insoluble solid particles, and (C) 0.1 to 10% by weight of a thickener. ,
The ratio of the jet hole diameter/filling nozzle pipe diameter is 0.2 or less,
The present invention also provides a filling method for obtaining a stabilized liquid cleaning agent, characterized in that the cleaning agent is sealed in a container using a multi-hole nozzle having at least 16 ejection holes. In the aqueous liquid composition filled by the method of the present invention, the surfactant used as component (A) may be an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, or a zwitterionic surfactant. As the anionic surfactant, ordinary sulfonate-based, sulfate-based, and phosphate-based anionic surfactants are used. Among these anionic surfactants, examples of sulfonate-based anionic surfactants include straight chain or branched alkyl (C ₈ - C ₂₃ ) benzenesulfonate, long chain alkyl (C ₈ - C ₂₂ ) Examples include sulfonates, long chain olefin ( _C8 - _C22 ) sulfonates, and the like. Sulfate-based anionic surfactants include, for example, long-chain monoalkyl (C ₈ -C ₂₂ ) sulfate ester salts, polyoxyethylene (1-6 mol) long-chain alkyl (C ₈ -C ₂₂ ) ether sulfate esters. , polyoxyethylene (1 to 6 mol) alkyl (C ₈ to C ₁₈ ) phenyl ether sulfate salts, and phosphate anionic surfactants include, for example, long-chain monoalkyl, dialkyl, or sesqui( Each alkyl group has 8 to 22 carbon atoms) Phosphate, polyoxyethylene (1 to 6 mol) Monoalkyl, dialkyl or sesquialkyl (each alkyl group has 8 to 22 carbon atoms)
) phosphates, etc. Cations as counter ions for these anionic surfactants include, for example, alkali metal ions such as sodium, potassium, and magnesium, alkaline earth metal ions, and alkalinolamine ions such as monoethanolamine, diethanolamine, and triethanolamine. It is. Examples of nonionic surfactants include polyoxyethylene (1 to 20 mol) long chain alkyl (primary or secondary C ₈ to C ₂₂ ) ether, polyoxyethylene (1 to 20 mol) alkyl (C ₈ ~ _C18 ) Phenyl ether, oxyalkylene adducts such as polyoxyethylene polyoxypropylene block copolymers, higher fatty acid alkanolamides or their alkylene oxide adducts, long-chain tertiary amine oxides ( _C12 - _C14 ), etc. can be mentioned. Examples of amphoteric surfactants include dimethyl long-chain ( _C8 - _C18 ) alkyl-carboxymethylammonium betaine, di-long-chain ( _C8 - _C18 ) alkylaminoalkylene carboxylate, 2-alkyl-1-
Examples include carboxymethyl-1-hydroxyethylimidazolinium betaine. These surfactants may be used alone or in combination of two or more, and their blending amount is 1 to 50% by weight, preferably 10 to 30% by weight, based on the weight of the liquid detergent. range. When this amount is outside the range of 1 to 50% by weight, suspension stability deteriorates, which is not preferable. The water-insoluble solid particles of component (B) in the aqueous liquid composition filled by the method of the present invention include, for example, quartz, silica, calcite, feldspar, alumina, diatomaceous earth, perlite, aluminosilicate, calcium phosphate, calcium carbonate, silica, etc. Abrasive materials such as acid zirconium, silica stone, aluminum hydroxide, glass balloon, silica balloon, glass balloon, pumice, hematite, and synthetic resin are suitable.
Each of these abrasives may be used alone or in combination of two or more, and those having an average particle size of about 1 to 40 μm are usually suitably used. The blending amount of the water-insoluble solid particles is in the range of 1 to 60% by weight based on the weight of the liquid detergent, and is appropriately selected from within this range depending on the purpose of use.
Usually, a range of 5 to 50% by weight is suitable. If the amount is less than 1% by weight, the desired polishing power cannot be exhibited, and if it exceeds 60% by weight, suspension stability will be poor. As the thickener for component (C) used in the aqueous liquid composition filled by the method of the present invention, clay minerals or water-soluble polymeric substances are preferred. Specific examples of the clay mineral include clays consisting of montmorillonite, saponite, nontronite, hectorite, vermiculite, attapulgite, sepiolite, and mixtures thereof. Examples of water-soluble polymer substances include carboxycellulose, polyacrylic acid and its salts,
Examples include polyvinyl alcohol, hydroxyethylcellulose, polyvinylpyrrolidone, maleic anhydride polymer and salts thereof. These thickeners may be used alone or in combination of two or more, and the blending amount is 0.1 to 10% by weight based on the weight of the aqueous liquid composition.
Weight % range. If this amount is less than 0.1% by weight, the viscosity is too low and suspension stability is poor;
If it exceeds this amount, it will gel and will no longer be liquid. In addition, the aqueous liquid composition filled by the method of the present invention may contain other ingredients commonly used in liquid detergents, such as lower aliphatic alcohols such as ethyl alcohol, toluene, etc., to the extent that suspension stability is not impaired. Solubilizers such as sodium salts and potassium salts of lower alkylbenzenesulfonic acids such as sulfonic acid and xylene sulfonic acid, and urea, enzymes, fragrances, pigments, and the like may be added as necessary. In the multi-hole nozzle used in the present invention, it is necessary that the ratio of the ejection hole diameter/filling nozzle pipe diameter is 0.2 or less and the number of ejection holes is at least 16. The ratio of nozzle pipe diameter is 0.15 or less, and the number of ejection holes is
20 or more items. The ratio of the above-mentioned nozzle diameter/filling nozzle pipe diameter exceeds 0.2, or the number of nozzles is
Suspension stability is poor if the liquid cleaning agent is enclosed in a container with fewer than 16 nozzles. A schematic diagram of one example of this porous nozzle is shown in the accompanying drawing. In the figure, 1 is a nozzle, 2 is a jet hole, a is a filling nozzle pipe diameter, and b is a jet hole diameter. The liquid cleaning agent of the present invention is an aqueous liquid composition containing a predetermined amount of a surfactant, water-insoluble solid particles, and a thickener, and is applied through a multi-hole nozzle with a specified ejection hole diameter and number of ejection holes. By enclosing it in a container, the water-insoluble solid particles contained therein do not precipitate or form a transparent layer even after long-term storage, and are of extremely high practical value. Next, the present invention will be explained in more detail with reference to Examples. In each example, the liquid cleaning agents filled into containers through various nozzles were evaluated as follows. That is, 600 ml of the specified aqueous liquid composition was filled into a plastic container using a filling tester, the container was tightly stoppered, and then stored at a temperature of 45°C for one month to observe the state of the liquid. Evaluate according to criteria. ○: The entire liquid is recognized to be uniform or almost uniform. ×: The liquid has become non-uniform, and precipitation and separation of the transparent liquid are observed. Examples, Comparative Examples C ₁₄ -α-olefin sulfonic acid-Na 5% by weight (AOS-Na) C ₁₂ -alkyl ether (EO=3) 20 Sulfate (AES) C ₁₂ -alkyldimethylamine oxide
3 (Amine oxide) Coconut fatty acid diethanolamide 2 Sodium toluenesulfonate 2 {TS-Na) Ethanol 2% by weight Silica (average particle size 20μ) 20 Clay mineral (Hectorite, trade name Macaloid)
1. Remaining amount of water An aqueous liquid composition containing the above components was prepared as follows. That is, AOS−Na,
A slurry prepared from silica, TS-Na and water was added to a mixture of AES, amine oxide, amide and ethanol, and then a clay mineral-water slurry was prepared using a homomixer to a concentration of 5% by weight. was added and uniformly dispersed to prepare an aqueous liquid composition. The composition thus obtained was filled into plastic containers using a filling tester using different nozzles, and its suspension stability was evaluated. The results are shown in the table below. 【table】

[Brief explanation of drawings]

The figure is a schematic diagram of an example of a multi-hole nozzle used in the present invention, in which reference numeral 1 is a nozzle, 2 is a jet hole, a is a filling nozzle tube diameter, and b is a jet hole diameter.

Claims (1)

[Claims] 1. An aqueous liquid detergent containing (A) 1 to 50% by weight of a surfactant, (B) 1 to 60% by weight of water-insoluble solid particles, and (C) 0.1 to 10% by weight of a thickener is added to the nozzle diameter/filling The ratio of nozzle pipe diameter is 0.2 or less and at least 16
1. A filling method for obtaining a stabilized liquid cleaning agent, characterized in that the cleaning agent is sealed in a container using a multi-hole nozzle having several injection holes.