JPH11302690A - Detergent composition for bath heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent compsn. which can effectively remove dirt attached to the inside of a bath heater in a short time regardless of water temp. by incorporating a specified amt. of a first transition element compd. as the major component into an aq. hydrogen peroxide soln. or a peroxide which releases hydrogen peroxide in an aq. soln. SOLUTION: This detergent compsn. contains 100 pts.wt. aq. hydrogen peroxide soln. (having a concn. of 30-35.5%) or peroxide [e.g. a sodium carbonate- hydrogen peroxide adduct (sodium percabonate)] which releases hydrogen peroxide in an aq. soln., 0.0001-1 pt.wt. first transition metal copd. (e.g. powdery iron sodium ethylenediaminetetraacetate dihydrate or ferrous gluconate), 0.05-5 pts.wt. enzyme such as a protein-decomposing enzyme (e.g. protease) or a lipid- decomposing enzyme (e.g. lipase) and/or 0.1-30 pts.wt. surfactant such as a nonionic surfactant (e.g. a polyoxyethylene alkyl ether) or an anionic surfactant (e.g. an alkylbenzenesulfonate), a chelating agent, a metal corrosion preventive, a germicide, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention can be used in a wide temperature range from a low temperature to a high temperature by using a compound of a first transition element in a hydrogen peroxide solution or a peroxide producing hydrogen peroxide in an aqueous solution. The present invention relates to a cleaning composition for a bath pot.

[0002]

2. Description of the Related Art Sebum, secretions, soap scum, dust, etc. from the human body adhere to the inside of a bathtub for home use, and bacteria and mold which use these organic substances as a nutrient source propagate to produce scale. ing. These are not only unsanitary but also cause inconveniences such as deterioration of the heat conductivity of the pot. Conventionally, inorganic peroxides that release hydrogen peroxide when dissolved in water, such as sodium percarbonate or sodium perborate, have been widely used as bath cleaners to remove these stains.

[0003] When these cleaning agents are dissolved in water, hydrogen peroxide is liberated, and the liberated hydrogen peroxide oxidizes and decomposes the scale attached to the inside of the bath kettle to make it easy to peel off from the kettle. In addition, fine bubbles of oxygen generated from hydrogen peroxide diffuse into the scale, and peel off the scale,
The cleaning effect was considerably improved. However, the cleaning time of a bath pot using such a cleaning agent is generally about 10 to 20 minutes. During this time, only a very small portion of the inorganic peroxide charged into the kettle contributed to the cleaning. This is because, after the inorganic peroxide is dissolved in water, it takes a considerable time before hydrogen peroxide is liberated and oxygen gas is generated from the hydrogen peroxide. Furthermore, the effect of water temperature upon cleaning is great, and its decomposition is even slower at lower temperatures, so that the amount of oxygen gas is further reduced, and in some temperature ranges no cleaning effect is exhibited. In such a case, it is effective to promote the decomposition by heat treatment and reheating, but heating for a long time involves danger, is uneconomical, and is not a preferable method. In addition, there is a method of using the bath when the temperature of the bath is high after the bath, but it is inconvenient to use and wash the bath within the day. The present inventor has previously disclosed a composition capable of effectively cleaning a bath pot even at a low temperature as Japanese Patent Application No. 9-2703.
In No. 02, a bath-tank detergent using a fast-dissolving peroxide with improved solubility at low temperatures was developed. It is a situation that is.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bath cleaning composition capable of effectively removing dirt adhering to the inside of a bath in a short time regardless of the water temperature. To provide things.

[0005]

Means for Solving the Problems The inventor of the present invention has made intensive research and development to solve the above-mentioned problems. Focusing on the fact that the properties are reduced by the incorporation of transition metals such as iron, copper, manganese, cobalt and nickel and their salts and oxides, the inventors have found a clue to the solution of the present invention. That is, the present invention relates to a peroxide 1 which produces hydrogen peroxide in a hydrogen peroxide solution or an aqueous solution.
0.0001 parts by weight of the compound of the first transition element
It is a bath pot detergent composition containing 1 part by weight as a main component.

As the hydrogen peroxide solution that can be used in the present invention, a commercially available aqueous solution of hydrogen peroxide (having a hydrogen peroxide concentration of 30 to 35.5%) is used. , 0.1 to 30%.

[0007] In addition, peroxides that generate hydrogen peroxide in an aqueous solution include, for example, sodium hydrogencarbonate adducts (hereinafter, referred to as sodium carbonate and hydrogen peroxide added at a molar ratio of 2: 3).
Sodium percarbonate), sodium borate hydrogen peroxide monohydrate and sodium borate hydrogen peroxide adduct tetrahydrate in which sodium borate and hydrogen peroxide are added at a molar ratio of 1: 1. Sodium percarbonate, when dissolved in water,
Since it becomes an alkaline solution of about 10 to 11, it is preferable because it has a function of penetrating well into the scale and enhancing the cleaning effect. Furthermore, among sodium percarbonates, fast-dissolving sodium percarbonate having improved solubility in water is particularly good. Fast-dissolving sodium percarbonate is known to be coated with a coating agent disclosed in, for example, JP-A-9-86908, and SPC-Q manufactured by Mitsubishi Gas Chemical Company is suitable as a commercially available product.

As the compound of the first transition element used in the present invention, manganese, cobalt, nickel and copper can be used.
These metals are used in the form of oxides, nitrates, sulfates, complexes with organic amine salts, and the like. Preferred compounds include oxides such as copper (II) oxide, manganese (IV) oxide, cobalt iron oxide, and nickel (II) oxide, copper (III) nitrate trihydrate, and manganese (II) nitrate hexahydrate , Cobalt nitrate (hexahydrate), iron (III) nitrate nonahydrate, nitrate such as nickel (II) nitrate hexahydrate, copper (II) sulfate, manganese (II) sulfate pentahydrate, Sulfates such as cobalt (II) sulfate heptahydrate, iron (III) sulfate and nickel (II) sulfate heptahydrate, disodium copper disodium ethylenediaminetetraacetate tetrahydrate, disodium cobaltate ethylenediaminetetraacetate hydrate And metal salts of ethylenediaminetetraacetic acid, such as sodium iron ethylenediaminetetraacetate dihydrate and nickel sodium hydrate ethylenediaminetetraacetate. Of these compounds, iron compounds are particularly preferred, and among them, water-soluble iron compounds such as sodium ethylenediaminetetraacetate dihydrate, ferrous gluconate and iron citrate are preferred.

[0009] A bath kettle cleaning composition is produced by using a first transition element compound in a hydrogen peroxide solution or a peroxide that generates hydrogen peroxide in an aqueous solution (hereinafter, collectively referred to as hydrogen peroxide adduct). However, in general, 0.0001 to 1 part by weight, preferably 0.01 to 1 part by weight of the first transition element compound is added to 100 parts by weight of aqueous hydrogen peroxide or hydrogen peroxide adduct.
Used in parts by weight. The first transition metal compound is preferably used in the form of a powder or granules. The powdery or granular first transition metal compound can be mixed in advance with the hydrogen peroxide adduct, thereby improving the contact between the hydrogen peroxide adduct and the first transition metal compound in water, Can be smoothed, and the work surface can be simplified and more efficient. In the case where the first transition metal compound is used in a liquid state, if the first transition metal compound is mixed with a hydrogen peroxide adduct in advance, decomposition will start.

The pH of the aqueous solution in the bath in which the cleaning composition for bath is dissolved is usually 7 to 13, preferably 8
To 13, more preferably 9 to 13. To adjust the pH, an alkali or an acid may be added to the cleaning composition for a bath kettle.

In order to further improve the cleaning power of the bath cleaner composition of the present invention, an enzyme and / or a surfactant can be used if necessary. The enzyme can further improve the bleaching detergency of the cleaning of the present invention by effectively decomposing organic dirt attached to the bath kettle. Examples of the enzyme include proteolytic enzymes such as protease, and lipolytic enzymes such as lipase. The amount of enzyme added
0.05 to 5 parts by weight per 100 parts by weight of the bath cleaner composition
Amounts by weight are preferred.

The surfactant can help the detergent composition penetrate into the deposits, prevent re-contamination of the stains in the bath, and enhance the bleaching / washing / removal effect of the deposits. . Examples of the surfactant include nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, and amine oxide, and anionic surfactants such as soap, alkyl sulfate, and alkylbenzene sulfonate. The surfactant is added in an amount of 0.1 to 30 parts by weight, preferably 0.5 to 10 parts by weight, per 100 parts by weight of the bath cleaner composition. Further, by adding a chelating agent, it is possible to improve the detergency. Generally, chelating agents such as sodium ethylenediaminetetraacetate (EDTA), sodium nitriloacetate (NTA), and sodium citrate are used. In addition to the above-described components, a metal corrosion inhibitor, a bactericide, a fragrance, a coloring agent, and the like can be appropriately added to the bath cleaner composition of the present invention.

The bath kettle cleaner of the present invention can be used for a natural circulation bath kettle and a forced circulation bath kettle. In particular, when used in a forced circulation bath kettle, dirt in the bath kettle is efficiently removed in a short time. Can be removed. The bath cleaner can be used in an aqueous solution state, a slurry state, or a powder state. When used in a natural circulation bath kettle, put the powder bath cleaner into an injection container and inject it into the bath kettle with water using the container,
Effectively cleans dirt. In the case of a forced circulation bath kettle,
After dissolving the detergent composition in a water bath,
Reheating is performed, and the cleaning liquid is evenly dispersed in the pot by circulating the cleaning liquid in the bathtub, thereby effectively cleaning dirt.

[0014]

EXAMPLES The present invention will now be described specifically with reference to examples, but the present invention is not limited to these examples. In addition, each part in an Example shows a weight ratio.

Example 1 A bath kettle detergent composition 1 was prepared by mixing powder with 100 parts by weight of sodium percarbonate and 0.01 part by weight of sodium ethylenediaminetetraacetate dihydrate.

Example 2 A bath kettle detergent composition 2 was prepared by mixing powder with 100 parts by weight of sodium percarbonate and 0.1 part by weight of sodium iron diaminediaminetetraacetate dihydrate.

Example 3 A bath kettle detergent composition 3 was prepared in the same manner as in Example 2 except that ferrous gluconate was used instead of sodium iron ethylenediaminetetraacetate dihydrate.

Example 4 A bath pot detergent composition 4 was prepared in the same manner as in Example 2 except that iron (II) sulfate heptahydrate was used instead of sodium ethylenediaminetetraacetate dihydrate.

Example 5 0.01 parts by weight of sodium iron diethylenetetraacetate dihydrate, 0.5 part of enzyme and 100 parts by weight of sodium percarbonate
Using part by weight, the powder was mixed and a bath kettle detergent composition 5 was prepared.

Example 6 A bath kettle detergent composition 6 was prepared in the same manner as in Example 5, except that 0.1 parts by weight of sodium iron ethylenediaminetetraacetate dihydrate was used.

Example 7 Using 100 parts by weight of sodium percarbonate, 0.1 part by weight of sodium ethylenediaminetetraacetate dihydrate, 0.5 part by weight of an enzyme, and 1 part by weight of a surfactant were mixed by powder. Bath kettle cleaning composition 7 was prepared.

Comparative Example 1 A bath cleaner prepared using only sodium percarbonate was used as Comparative Example 1. Various bath kettle detergent compositions prepared in Examples 1 to 7 and the bath kettle detergent of Comparative Example 1 were evaluated by means of oxygen gas generation measurement and field tests as means for determining the cleaning effect.

(1) Measurement of Amount of Oxygen Gas Generated 12 g of various bath cleaners were dissolved in 200 ml of water at 25 ° C., and the amount of oxygen gas generated after 10 minutes was measured.

(2) Field test using a natural circulation bathtub A home bathtub (natural circulation bath) used in a family of four and installed in a 200 L bathtub that has not been cleaned for more than three months 25) until the upper hole of the kettle is hidden.
C., and water is poured into the lower hole of the kettle using a filling container containing 120 g of the cleaning agent in each bath kettle, and left for 10 minutes. During this time, the amount of dirt and bubbles coming out of the hole in the kettle is visually evaluated.

(3) Field test using forced circulation bath kettle A home bath kettle (forced circulation bath) used in a family of four and installed in a 200 L bathtub that has not been cleaned for more than three years Then, water of 25 ° C. is poured into the kettle so as to be higher than the circulation hole of the kettle, and 180 g of each bath kettle detergent is poured into the bath, followed by reheating for 10 minutes. During this time, the amount of dirt and bubbles coming out of the circulation hole of the kettle is visually evaluated. By the above-mentioned field test, the amount of dirt coming out from the circulation hole of the kettle was confirmed by the following evaluation method. ◎ Very many appeared ○ Many appeared △ Some appeared × None appeared The above results are shown in Table 1.

[0026]

[Table 1]

[0027]

Each of the embodiments according to the present invention is different from the comparative example in comparison with the comparative example.
It shows excellent results in oxygen gas generation and field tests. As described above, the bath kettle cleaning composition according to the present invention can effectively remove dirt inside the bath kettle in a short time regardless of the water temperature.

Claims (3)

[Claims] 1. A bath cleaner composition comprising 0.0001 to 1 part by weight of a first transition element compound per 100 parts by weight of hydrogen peroxide in an aqueous solution of hydrogen peroxide or an aqueous solution. . 2. The method according to claim 1, wherein the first transition element is manganese, iron, cobalt,
The bathtub cleaning composition according to claim 1, wherein the composition is nickel or copper. (3) 0.0001 to 1 part by weight of a first transition element compound, 0.05 to 5 parts by weight of an enzyme and / or 100 parts by weight of a peroxide which forms hydrogen peroxide in an aqueous solution of hydrogen peroxide or an aqueous solution. Alternatively, a bathtub detergent composition comprising 0.1 to 30 parts by weight of a surfactant.