JP2908587B2 - Cleaning composition for acidic hard surfaces - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning composition for hard surfaces, and more particularly, to a composition having a proper viscosity even under acidic conditions and generating chlorine gas even when mixed with a chlorine-based product. The present invention relates to a safe acidic hard surface cleaning composition having no danger.

[0002]

2. Description of the Related Art Dirt on toilets and bathrooms is known to be calcium phosphate, iron oxide and fatty acid metal salts, glycerides, fatty acids and hydrocarbons, and yellowish dirt (organic dirt derived from urine dirt and microorganisms). Have been. As a cleaning agent for removing these stains efficiently, an acidic cleaning agent mainly composed of an inorganic acid or an organic acid is mainly used for inorganic soils. A cleaning composition containing an activator as a main cleaning component,
For organic stains such as yellowish stains, alkaline washing bleaching agents (chlorine-based detergents) based on alkali metal hypochlorite as a main base are widely known, and all types of washing agents are commercially available.

[0003] However, there is no problem when these cleaning agents are used alone. For example, when an acidic cleaning agent and a chlorine-based cleaning agent are mixed by mistake, chlorine gas is generated.
There was a problem that the danger was very high.

[0004] Further, in toilets and bathrooms, most of the places where such strong dirt adheres and are conspicuous and need to be cleaned are vertical surfaces. However, these conventional cleaning agents flow down immediately even if they are sprinkled on a vertical surface, failing to sufficiently exert their cleaning effect, increasing the amount of use and being uneconomical. Also, if the liquid rebounds or splatters when sprinkling, there is a danger in using a strongly acidic cleaning liquid.

[0005] In order to improve these disadvantages, it is necessary to increase the viscosity to an appropriate viscosity, but there is almost no thickener effective in an acidic system. Some examples use polyvinyl alcohol (hereinafter sometimes abbreviated as PVA), xanthan gum, etc., but they are not satisfactory because of insufficient thickening or a decrease in viscosity over time. .

[0006]

Means for Solving the Problems Accordingly, the present inventors have:
An acidic liquid detergent composition that has the safety of generating no toxic gas even if mixed with other detergents by mistake, and has high cleaning performance against various hard surface stains and maintains appropriate viscosity. As a result of intensive research to develop a product, H ₂ O ₂ was added to the coexistence system of specific metal ions, acidic anionic surfactant and specific polymer, and the pH of the composition was adjusted to 3 or less. The present inventors have found that a desired acidic liquid detergent composition can be obtained, and have completed the present invention.

That is, the present invention relates to the following (a) to (d) components (a) H ₂ O ₂ 1 to 10% by weight (b) water-soluble alkali metal salt and / or alkaline earth metal salt 0.1 to 10 % By weight (c) Acid type anionic surfactant 0.1 to 25% by weight (d) The following general formula (I)

[0008]

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Wherein X: -OH or -HY: -COOM or -HM: an alkali metal atom or Hp, q: 0 to 1. ] A water-soluble carboxylic acid polymer having a structure represented by the following formula:
An object of the present invention is to provide an acidic hard surface detergent composition containing 0.01 to 10% by weight and having a pH of 3 or less.

In the present invention, H ₂ O ₂ is contained in the composition at 1 to 10%.
%, Preferably 3 to 7% by weight.

The water-soluble alkali metal salt and / or alkaline earth metal salt used as component (b) in the present invention is selected from hydrochloride, sulfate, nitrate, borate and phosphate. Species or two or more are preferred. Also,
Sodium and potassium are preferred as alkali metals, and calcium and magnesium are preferred as alkaline earth metals. The component (b) is preferably one or more selected from calcium chloride, sodium chloride, potassium sulfate and magnesium sulfate. These water-soluble alkali metal salts and / or alkaline earth metal salts are present in the composition of the present invention in an amount of 0.1 to 10% by weight, preferably 0.5 to 3% by weight.
It is practically preferable to mix them.

As the acid type anionic surfactant used as the component (c) in the present invention, a normal sulfonate type anionic surfactant is used, and a linear or branched alkyl (C ₈ -C ₂₂ ) benzene is used. Sulfonic acid, long chain alkyl (C ₈ ~
C ₂₂₎ sulfonic acid, long chain olefins (C ₈ ~C ₂₂₎ such as a sulfonic acid. Here, by using the component (c) in the acid form in an unneutralized state, the liquid properties can be appropriately adjusted without using an organic acid or an inorganic acid. The acid type anionic surfactant is incorporated in the composition of the present invention in an amount of 0.1 to 25% by weight, preferably 0.5 to 10% by weight.

The carboxylic acid polymer used as the component (d) in the present invention is water-soluble and has a structure represented by the following general formula (I).

[0014]

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Wherein X: -OH or -HY: -COOM or -HM: an alkali metal atom or Hp, q: 0 to 1. The polymer preferably has an average molecular weight of 500,000 to 100,000. Above all, polyacrylic acid (salt) -based polymers are particularly preferred. Polyacrylic acid or a salt thereof has an average molecular weight of 10
Those having a range of 100 to 100,000, preferably 2,000 to 20,000 are suitable. If the average molecular weight is less than 1,000 or exceeds 100,000, the storage stabilizing effect is reduced. Carbopol, which is often used as a thickener in a hydrogen peroxide-based acidic liquid bleach, is a polyacrylic acid having a very large molecular weight, and is partially crosslinked, and is not crosslinked as used in the present invention. It is different from polyacrylic acid.

The total amount of the water-soluble carboxylic acid polymer (d) in the composition is 0.01 to 10% by weight, preferably 0.5 to 3% by weight.
% By weight. If the amount of the polymer is less than 0.01% by weight, a sufficient effect cannot be obtained. If the amount exceeds 10% by weight, a problem of separation of the polymer may occur.

The composition of the present invention is usually balanced by adding water to the above components (a) to (d). In addition, a surfactant other than the component (c), urea, a radical scavenger, ethanol, isopropanol , Alcohols such as ethylene glycol, thickeners, fragrances, dyes, fluorescent dyes, enzymes, rust inhibitors, fungicides, water-insoluble abrasives, colloidal silica, and polyphosphates, builders such as phosphonic acid, EDTA, A chelating agent such as NTA may be blended if necessary.

The pH of the stock solution of the composition of the present invention is adjusted to 3 or less, preferably less than 1.5. If the pH of the composition exceeds 3, the cleaning performance will decrease.

[0019]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples.

Examples 1 to 5 and Comparative Examples 1 to 6 Hard surface cleaning compositions having the composition shown in Table 1 were prepared, and the following tests were conducted. The results are shown in Table 1. <Washing power> The washing power is evaluated by selecting a general household flush toilet with dirt that cannot be removed by just flushing water as the surface to be cleaned, and using the flush toilet for evaluation with 30 g of a liquid detergent for evaluation.
Was applied, and after 3 minutes, the condition of the toilet surface after washing with a brush and rinsing with water was visually judged. Evaluation criteria ○: Dirt is reduced by 80% or more △: Dirt is reduced by 20 to 50% ×: Dirt is hardly removed <Safety> For evaluation of 3 ml of a commercially available chlorine-based cleaning agent (Toilet Height: manufactured by Kao Corporation) 3 ml of the liquid detergent was mixed, and the amount of generated chlorine gas was measured using a gas detector tube. Evaluation criteria ○: Chlorine gas generation amount less than 1 ppm ×: Chlorine gas generation amount 1 ppm or more <Viscosity stability> The initial viscosity (viscosity immediately after preparation) of a thickened uniform liquid detergent composition of various compositions and the viscosity at 40 ° C. After storage for days, the viscosity was measured to see the change in viscosity.

[0021]

[Table 1]

[0022]

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──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ identification code FI C11D 3:04 3:39 3:37) (58) Field surveyed (Int.Cl. ⁶ , DB name) C11D 17/00 C11D 10/02 C11D 1/14 C11D 1/22 C11D 3/04-3/10 C11D 3/37-3/39 C11D 7/10-7/18 WPI / L (QUESTEL)

Claims (8)

(57) [Claims] 1. The following components (a) to (d): component (a) 1 to 10% by weight of H ₂ O ₂ (b) water-soluble alkali metal salt and / or alkaline earth metal salt 0.1 to 10% by weight (c ) Acid type anionic surfactant 0.1 to 25% by weight (d) The following general formula (I) [Wherein, X: -OH or -HY: -COOM or -HM: an alkali metal atom or Hp, q: 0 to 1]. ] A water-soluble carboxylic acid polymer having a structure represented by the following formula:
A cleaning composition for an acidic hard surface, comprising 0.01 to 10% by weight and having a pH of 3 or less. 2. The cleaning composition for an acidic hard surface according to claim 1, wherein the pH is less than 1.5. 3. The water-soluble alkali metal salt and / or alkaline earth metal salt (b) is one or more selected from hydrochloride, sulfate, nitrate, borate and phosphate. Item 3. The cleaning composition for acidic hard surfaces according to Item 1 or 2. 4. The alkali metal is sodium, potassium,
The cleaning composition for an acidic hard surface according to any one of claims 1 to 3, wherein the alkaline earth metal is selected from calcium and magnesium. 5. The water-soluble alkali metal salt and / or alkaline earth metal salt (b) is selected from calcium chloride, sodium chloride, potassium sulfate and magnesium sulfate.
The cleaning composition for an acidic hard surface according to any one of claims 1 to 4, wherein the cleaning composition is a kind or two or more kinds. 6. The cleaning composition for an acidic hard surface according to claim 1, wherein the terminal anionic group of the acid type anionic surfactant (c) is —SO ₃ ^— . 7. The cleaning composition for an acidic hard surface according to claim 1, wherein the water-soluble carboxylic acid polymer (d) is polyacrylic acid or a metal salt thereof. 8. The cleaning composition for an acidic hard surface according to claim 1, wherein the water-soluble carboxylic acid polymer (d) has an average molecular weight of 1,000 to 100,000.