JPH075909B2 - Liquid detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid detergent composition, and more specifically, to a deteriorating composition by adhering to, for example, a vertical surface such as a ventilation fan or a wall or a ceiling, particularly in and around a kitchen. The present invention relates to a liquid detergent composition having an appropriate viscosity capable of efficiently and completely removing stains.

[Conventional technology and its problems]

Oil-and-oil stains derived from food are often denatured by the action of heat, sunlight, oxygen in the air, etc., and are resinous or semi-dry to solid stains. Mainly found on ventilation fans, range hoods, water heaters, vertical parts such as walls and ceilings.

Alkaline detergents are effective for such strong denatured oil stains on vertical surfaces or ceilings, but conventional detergents have low viscosity and can be sprinkled on the stains or sprayed in a spray container. However, the effect will not be fully exerted due to the immediate spillage or sagging, and it will be inconvenient to use because it will be scattered or liquid will be attached even to the part that is not dirty.

In the case of a neutral to weakly alkaline composition, it is relatively easy to prepare a composition having a good retention property on a highly viscous soil, but this does not have sufficient detergency.

In order to solve such a problem, it has been proposed to use partially crosslinked polyacrylic acid as a thickening agent (JP-A-59-59).
36200 and 59-66497).

As the partial cross-linking agent used in these, polyvalent metal salts of acrylic acid or methacrylic acid, glyoxal alkenyl compounds, allylated glycerin, allylated pentaerythritol, allyl (meth) acrylate oligomer, triallyl isocyanurate, triallyl phosphate, Tetraallylsilane, polyalkenyl sulfone, butadiene oligomer and the like have been proposed.

The system in which these compounds are blended effectively gives good results, and when stored under normal conditions, there is no problem, but when stored at high temperature, the viscosity decreases and the performance decreases. There was found.

The place where the above-mentioned deteriorated stains are generated is the area where fire is used especially in the kitchen, and after removing the target stains, the used detergent is left as it is near the gas stove and exposed to abnormally high temperatures. Alternatively, it becomes a problem under the condition of being stored at a high temperature such as an abnormally high temperature due to the greenhouse effect in the summer or a show window.

[Means for solving problems]

As a result of studies to solve this problem, the present inventors have found that the purpose can be achieved by using a specific crosslinking agent.

That is, the present invention includes (a) 0.5 to 5% by weight of partially crosslinked polyacrylic acid crosslinked with a crosslinking agent represented by the following general formula (I): (X, Y, Z is, -CH = CH ₂ or -CH ₂ -CH = CH _2, or H,
No two or more are H at the same time. ) (B) One or more inorganic or organic alkaline agents
A liquid detergent composition containing 0.1 to 30% by weight as an essential component and having a pH of 11 to 14.

In the partially cross-linked polyacrylic acid used as a thickener in the present invention, the cross-linking agent is preferably 0.3 to 15 wt% of acrylic acid, sufficient viscosity is not obtained if the cross-linking agent is too small, and If the amount is too large, the solubility becomes poor, which is not preferable.

Such a partially crosslinked polyacrylic acid of the present invention shows a sufficient thickening effect even in an alkaline solution and an aqueous solution having high ionic strength, and is stable with almost no change in viscosity with time even at high temperatures. .

In the present invention, partially crosslinked polyacrylic acid is added to the composition.
The amount is 0.5 to 5% by weight, preferably 0.5 to 3.5% by weight. If the amount of partially crosslinked polyacrylic acid is less than this, the viscosity will be
It becomes 100 cp or less, and when it is used on a vertical surface, it runs off immediately, and if it is too much, the composition becomes a gel and causes a problem in use.

Examples of the inorganic or organic alkaline agent include alkali metal hydroxides, silicates, carbonates, phosphates, borates, hydroxycarboxylates or the following general formula (I) or (II), (CnH _{2 nOH) mNH 3- m (I)} (C P H 2P + 1) mNH 3- m (II) ( wherein, n is represented by 2 or 3, p and m represents an integer of 1 to 3) Examples include amines. Specifically, sodium hydroxide, potassium hydroxide, sodium silicate, sodium carbonate, sodium citrate, monoethanolamine,
Diethanolamine and the like are preferable. When the cation of the alkaline agent is a polyvalent metal such as Ca, Mg or Al, the solubility of the partially crosslinked polyacrylic acid deteriorates, which is not preferable. These alkaline agents are contained in the composition in an amount of 0.1 to 30% by weight, preferably 0.5
Add ~ 10% by weight to adjust the pH to 11-14.

The liquid detergent composition of the present invention comprises the above essential component (a),
As long as it contains (b), a surfactant, a water-insoluble polishing agent, and an oxidative bleaching agent can be further added thereto.

The surfactant is not particularly limited, and a detergent active ingredient generally used in household detergents can be used, but among them, a nonionic surfactant or an anionic surfactant is preferable.

As such, for example, linear or branched long-chain alkylbenzene sulfonate, long-chain monoalkyl sulfate, long-chain alkyl sulfonate, long-chain olefin sulfonate and long-chain alkyl or carbon number. 8 to 18 alkylphenyl polyoxyethylene (1 to 6)
Anionic surfactant such as ether sulfate: long-chain alkyl of polyoxyethylene (3 to 12) or alkyl phenyl ether having 8 to 18 carbon atoms, long-chain fatty acid monoethanolamide, long-chain fatty acid diethanolamide, etc. A nonionic surfactant is mentioned. These surfactants are contained in the composition in an amount of 0.1 to 20% by weight, preferably 0.5 to 10% by weight.
Be compounded.

Abrasive increases cleaning effect by polishing effect,
The thickening effect and the opacifying effect make it possible to confirm the place and degree of adhesion of the detergent composition.

Examples of the water-insoluble polishing agent include silicon dioxide, aluminum oxide, magnesium oxide, titanium oxide, natural zeolite, silicon carbide, calcium carbonate, calcium phosphate, chromium oxide or corundum, emery, silica stone, quartz sand, dolomite, sand and shells. Natural crushed products,
Examples thereof include synthetic zeolite and polymer particles. Of these, crushed silica or quartz sand is most commonly used. The grain size of the abrasive may be coarse, but a grain size of 2 to 150 microns is preferable in order not to damage the surface to be polished. 5 to 70% by weight of these abrasives in the composition,
It is particularly preferable to add 10 to 60% by weight.

Examples of the oxidative bleaching agent include alkali or alkaline earth metal salts of hypochlorous acid, which generate hypochlorous acid species in an aqueous solution, such as Na, K, Li, Ca, Mg of hypochlorous acid. Salt etc. are mentioned. They exhibit bleaching and bactericidal action against mold stains due to the strong oxidizing action of hypochlorous acid species. These oxidative bleaching agents are incorporated in the composition in an amount of 0.1 to 15% by weight, preferably 0.5 to 10% by weight.

In the liquid detergent composition of the present invention, in addition to the above-mentioned components, optional components generally blended in such a case, for example, a small amount of a fragrance, a pigment, a dye, a bactericide, a solubilizer or the like can be blended. .

〔Example〕

Next, examples will be described. In addition,% in the examples is shown by weight ratio.

Example 1 A detergent having the composition shown in Table 1 was prepared, and its viscosity and storage stability were investigated.

(1) Viscosity A detergent was put in a viscosity beaker to 20 ° C., and the viscosity was measured using a B-type viscometer (rotation speed 30 rpm).

(2) Vertical Surface Adhesion and Retention Property A cleaning agent stored at 40 ° C. for 60 days was adhered to a vertically standing polypropylene plate, and its retention property was examined. ○ does not flow down. △ gradually flows down. × flows down quickly.

(3) Detergency A cleaning agent stored at 40 ° C for 60 days was adhered to the vertical surface of the ventilation fan to which the altered oil was adhered, and rinsed with running water after 5 minutes.

○ The stain is completely removed.

△ Half the dirt comes off.

× Almost no dirt is removed.

Claims (1)

[Claims] 1. (a) 0.5 to 0.5 of partially crosslinked polyacrylic acid crosslinked with a crosslinking agent represented by the following general formula (I).
5% by weight, (X, Y, Z is, -CH = CH ₂ or -CH ₂ -CH = CH _2, or H,
No two or more are H at the same time. ) (B) One or more inorganic or organic alkaline agents
A liquid detergent composition containing 0.1 to 30% by weight as an essential component and having a pH of 11 to 14.