JP2908588B2 - 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 cleaning method for acidic hard surfaces which has no danger of generating chlorine gas even when mixed with chlorine-based products. The present invention relates to an agent 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 that efficiently removes these stains, an acidic detergent mainly composed of an inorganic acid or an organic acid is mainly used for inorganic stains, and a chelating agent and a surfactant for fatty acid metal salt-based stains. The cleaning composition with the agent as the 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. As a result of intensive research to develop an acidic liquid detergent composition, the target acidic liquid was prepared by adding H ₂ O ₂ to the system in which the acid and the specific polymer coexist, and adjusting the pH of the composition to less than 1.5. The present inventors have found that a detergent composition can be obtained, and have completed the present invention.

More specifically, the present invention relates to the following components (a) to (c): (a) 1 to 10% by weight of H ₂ O ₂ (b) organic and / or inorganic acid 0.5 to 10% by weight (c) Formula (I)

[0006]

Embedded image

Wherein X: -OH or -HY: -COOM or -HM: an alkali metal atom or Hp, q: 0 to 1. A water-soluble carboxylic acid-based polymer having an average molecular weight of from 500,000 to 100,000 having a structure represented by the formula: and a cleaning composition for acidic hard surfaces having a pH of less than 1.5. is there.

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

In the present invention, the organic acid and / or inorganic acid used as the component (b) include citric acid, acetic acid, paratoluenesulfonic acid, maleic acid, tartaric acid, succinic acid, fumaric acid, phosphoric acid, sulfuric acid. One or several, particularly preferably, paratoluenesulfonic acid, phosphoric acid, and sulfuric acid.
It is practically preferable to add 0.1 to 10% by weight. From the viewpoint of cleaning effect, many other acidic substances such as oxalic acid, glycolic acid, malonic acid, gluconic acid, sulfamic acid, hydrochloric acid, and nitric acid are also effective to some extent, but they are safe for living organisms, irritating, However, it is not appropriate in consideration of storage stability and the like.

The carboxylic acid polymer used as the component (c) in the present invention is water-soluble and has a structure represented by the following general formula (I) and an average molecular weight of 500,000 to 100,000.

General formula (I)

[0012]

Embedded image

Wherein X: -OH or -HY: -COOM or -HM: an alkali metal atom or Hp, q: 0 to 1. Among them, a polyacrylic acid polymer or an alkali metal salt thereof is particularly preferred. Polyacrylic acid or an alkali metal salt thereof has an average molecular weight of 1,000 to 100,000, preferably 2000 to 20
A range of 000 is preferred. 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 polymer of component (c) is present in the composition in a total amount of 0.1%.
It is added in an amount of from 05 to 5% by weight, preferably from 0.5 to 3% by weight.
If the amount of the polymer is less than 0.05% by weight, a sufficient effect cannot be obtained. If the amount exceeds 5% by weight, a problem of separation of the polymer may occur.

Further, the detergent composition for acidic hard surfaces of the present invention includes polyphosphates such as pyrophosphate, tripolyphosphate and hexametaphosphate, and 1-hydroxyethylidene-
It is desirable to add 0.001 to 0.2% by weight of a phosphonic acid such as 1,1-diphosphonic acid and an aminophosphonate such as sodium ethylenediaminepentamethylenephosphonate.

The composition of the present invention is usually balanced by adding water to the above components (a) to (c).
Urea, radical scavengers, alcohols such as ethanol, isopropanol, ethylene glycol, thickeners, fragrances, dyes, fluorescent dyes, enzymes, rust inhibitors, fungicides, water-insoluble abrasives, colloidal silica, 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 less than 1.5, preferably to 1 or less. When the pH of the composition exceeds 1.5, the cleaning performance is reduced.

[0018]

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

Examples 1 and 2 and Comparative Examples 1 to 5 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. <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 of the swelling of the bottle (the appearance of the bottle) 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 with an internal pressure of kg / cm ² or more.) [Fig. 2] <Cleaning power> The cleaning power is evaluated by washing the household surface with dirt that cannot be removed by just flowing water. Select a toilet and put 30g of evaluation liquid detergent on the flush toilet
Was applied, and after 3 minutes, the condition of the toilet surface after washing with a brush and rinsing with water was visually judged. ○: Stain is reduced by 80% or more △: Stain is reduced by 20 to 50% ×: Stain is hardly removed <Safety> Liquid washing for evaluation in 3 ml of a commercially available chlorine-based cleaning agent (Toilet Height: manufactured by Kao Corporation) 3 ml of the agent was mixed, and the amount of generated chlorine gas was measured using a gas detector tube. ○: Chlorine gas generation less than 1 ppm ×: Chlorine gas generation 1 ppm or more

[0021]

[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 Continued on the front page (51) Int.Cl. ⁶ identification code FI C11D 7:26 7:34) (58) Investigated field (Int.Cl. ⁶ , DB name) C11D 17/00 C11D 7/60 C11D 7/08 C11D 7/18 C11D 7/26 C11D 7/34 C11D 3/02-3/06 C11D 3/20 C11D 3/37-3/39 WPI / L (QUESTEL)

Claims (3)

(57) [Claims] 1. The following components (a) to (c) (a) 1 to 10% by weight of H ₂ O ₂ (b) 0.5 to 10% by weight of an organic acid and / or an inorganic acid (c) The following general formula (I) Embedded image [Wherein, X: -OH or -HY: -COOM or -HM: an alkali metal atom or Hp, q: 0 to 1]. ] A cleaning composition for acidic hard surfaces containing 0.05 to 5% by weight of a water-soluble carboxylic acid polymer having an average molecular weight of 500,000 to 100,000 and having a pH of less than 1.5. 2. The method according to claim 1, wherein the component (b) 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 and sulfuric acid. Cleaning composition for acidic hard surfaces. 3. The cleaning composition for an acidic hard surface according to claim 1, wherein the carboxylic acid polymer is polyacrylic acid or an alkali metal salt thereof.