JP2978277B2 - 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 safe acidic hard surface which has no danger of generating chlorine gas even when mixed with a chlorine-based product. The present invention relates to a cleaning composition.

[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]

Means for Solving the Problems Accordingly, the present inventors have:
It has the safety that it does not generate toxic gas even if mixed with other cleaning agents by mistake, and has high cleaning performance against various hard surface stains and good storage stability at high temperature storage. results so diligent research to develop acidic liquid detergent composition, addition of H ₂ O ₂ in the coexistence system of acid and specific surfactants, by adjusting the pH of the composition to less than 1.5, the purpose That an acidic liquid detergent composition is obtained,
The present invention has been completed.

That is, the present invention provides an acidic hard surface cleaning composition comprising the following components (a) to (c) and having a pH of less than 1.5. (a) 1 to 10% by weight of only H ₂ O ₂ as bleaching active species (b) 0.5 to 5% by weight of cationic surfactant and / or amphoteric surfactant (c) 0.1 to 10% by weight of organic acid and / or inorganic acid %.

In the present invention, H ₂ O ₂ is contained in the composition at 1 to 10%.
%, Preferably 3 to 7% by weight. The book
In the invention, no bleaching active species other than H ₂ O ₂ is blended.

As the cationic surfactant and / or amphoteric surfactant used as the component (b) in the present invention, a quaternary ammonium salt, sulfobetaine or carbobetaine is preferable. For example, the following general formulas (I) to (I) III).

[0008]

Embedded image

In the general formula (I), R ₁ is an alkyl group having 6 to 22 carbon atoms, preferably an alkyl group having 12 to 18 carbon atoms. R ₂ is an alkyl group having 1 to ₂ carbon atoms. M is an alkali metal. In the general formulas (II) and (III), R ₃ and R ₅ are an alkyl group having 6 to 22 carbon atoms, for example, an octyl group,
Examples include a decyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, an octadecyl group. Of these,
Preferred are a dodecyl group and a tetradecyl group, but a mixture of alkyl groups having different carbon numbers derived from natural products may be used. R ₄ and R ₆ are alkyl groups having 1 to 3 carbon atoms, such as a methyl group, an ethyl group, and a propyl group. Of these, a methyl group is preferable. N is 1 to 3.

The cationic surfactant and / or amphoteric surfactant (b) in the cleaning composition for acidic hard surfaces of the present invention
The content ranges from 0.5 to 5% by weight . The content of the cationic surfactant and / or amphoteric surfactant is insufficient cleaning performance and finish feel is less than 0.5 wt%, 5 fold
If the amount exceeds % , the storage stability of the composition is extremely lowered, which is not preferable.

The organic and inorganic acids used as component (c) in the present invention include citric acid, acetic acid, paratoluenesulfonic acid, maleic acid, tartaric acid, succinic acid, and the like.
Fumaric acid, phosphoric acid, sulfuric acid, hydrochloric acid, nitric acid
It is practically preferable to add 0.1 to 10% by weight. In terms of detergency, many acidic substances such as oxalic acid, glycolic acid, malonic acid, gluconic acid, and sulfamic acid are also effective to some extent, but they are safe for living organisms, irritating, and the storage stability of the compound. Considering such points, it is not appropriate.

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

[0013] The pH of the stock solution of the composition of the present invention is adjusted to less than 1.5 . PH of the composition is Ru der 1.5 or more and the cleaning performance decreases.

[0014]

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 8 Cleaning compositions for hard surfaces having the composition shown in Table 1 were prepared,
The following tests were performed. The results are shown in Table 1. <Storage stability> Evaluation method The bleaching compositions shown in Table 1 were polyethylene cylinder bottles as shown in FIG.
(0.6 mm), sealed and stored at 50 ° C. for 14 days, taken out, and visually observed the swelling of the cylinder bottle. FIG. 1 shows a bottle in a normal state, in which the bottom 2 is inwardly recessed. FIG. 2 shows an inflated cylinder bottle 1 in which the bottom 2 is outwardly swelled. Here, the evaluation criteria for the swelling of the bottle (bottle appearance) are as follows. Evaluation criteria (bottle appearance) ○: no change (Fig. 1) △: bottle bottom swells slightly and bottle sits poor ×: bottle bottom swells and bottle falls (0.6
(This state is obtained at an internal pressure of kg / cm ² or more.) [Fig. 2] <Cleaning power and finish feeling> The cleaning power and finish feeling are evaluated as follows. A washing toilet of a general household was selected, 30 g of a liquid cleaning agent for evaluation was applied to the washing toilet, and after 3 minutes, the state of the surface of the toilet after washing with a brush and rinsing with water was visually determined. Evaluation Criteria (detergency) 汚 れ: 80% or more of dirt is removed △: 20 to 50% of dirt is removed ×: Dirt is hardly removed (finish feeling) ○: After rinsing, 20% of the part that repels water △: Rinse 20% to 50% of the part that repels water after washing. ×: More than 50% of the part that repels water after rinsing. <Safety> 3 ml of a commercially available chlorine-based cleaning agent (Toilet Hiter: 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

[0017]

[Table 1]

[Brief description of the drawings]

FIG. 1 is a schematic view of a cylinder bottle in a normal state.

FIG. 2 is a schematic view of a cylinder bottle in a state where a bottom portion is expanded.

[Explanation of symbols] 1 ... Cylinder bottle 2 ... Bottom

──────────────────────────────────────────────────続 き Continuing on the front page (51) Int.Cl. ⁶ identification symbol FI C11D 3/39 C11D 3/39 (58) Investigated field (Int.Cl. ⁶ , DB name) C11D 1/62 C11D 1/92 C11D 3/04 WPI / L (QUESTEL)

Claims (3)

(57) [Claims] 1. A cleaning composition for an acidic hard surface, comprising the following components (a) to (c) and having a pH of less than 1.5. (a) 1 to 10% by weight of only H ₂ O ₂ as bleaching active species (b) 0.5 to 5% by weight of cationic surfactant and / or amphoteric surfactant (c) 0.1 to 10% by weight of organic acid and / or inorganic acid % 2. The cleaning composition for acidic hard surfaces according to claim 1, wherein the component (b) is a quaternary ammonium salt and / or sulfobetaine or carbobetaine. 3. The component (c) is an acid selected from the group consisting of citric acid, acetic acid, paratoluenesulfonic acid, maleic acid, tartaric acid, succinic acid, fumaric acid, phosphoric acid, sulfuric acid, hydrochloric acid and nitric acid. Item 7. The cleaning composition for acidic hard surfaces according to Item 1.