JPH07331294A - Bleaching agent composition - Google Patents

Abstract

PURPOSE:To provide a bleaching agent composition containing an alkali metal hypochlorite, storable over a long period even under a severe condition without causing the decomposition of an alkali metal hypochlorite, having excellent storage stability and viscosity characteristics and exhibiting high cleaning and bleaching power and safety. CONSTITUTION:This bleaching agent composition contains (a) 0.1-13wt.% of an alkali metal hypochlorite, (b) 0.01-20wt.% of a polyoxyalkylene alkyl ether carboxylate, (c) 0.1-10wt.% of a straight-chain alkylbenzenesulfonic acid salt having a 8-20C alkyl group and/or a straight-chain alkylnaphthalenesulfonic acid salt having a 8-20C alkyl group and (d) 0.1-5wt.% of an alkaline agent.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a thickened chlorine bleaching agent containing an alkali metal hypochlorite which has excellent storage stability and viscosity characteristics, and thus has high wash bleaching power and safety. It relates to a composition.

[0002]

2. Description of the Related Art Conventionally, many cleaning / bleaching agent compositions containing an alkali metal hypochlorite as a main base have been known. Currently, the above cleaning and bleaching composition is used for disinfection of tableware used in public facilities, company cafeterias, general cafeterias, etc .; bleaching of kitchen products and clothing of general households; cleaning of toilets and drains, bleaching, and clogging removal. It is widely used for the purpose of sterilizing and deodorizing; bleaching mold stains generated in bathrooms. However, the above-mentioned cleaning / bleaching agent composition has a problem that decomposition of alkali metal hypochlorite is likely to occur, and improvement in storage stability is desired.

Therefore, in order to improve the storage stability of the above cleaning / bleaching agent composition, many attempts have been proposed. For example, in Japanese Unexamined Patent Publication (Kokai) No. 50-89280, decomposition of sodium hypochlorite can be carried out by blending an alkaline aqueous solution of sodium hypochlorite with a specific surfactant represented by the following [Chemical formula 2]. Liquid wash bleach compositions having improved protection and storage stability are disclosed. In addition, JP-A-51-
37903, JP-A-51-5307, and JP-A-52-78905 disclose that in a hypochlorite-containing detergent composition, a polyoxyethylene alkylphenol ether sulfate ester salt and a surfactant are used as a surfactant. It is disclosed that the stability of hypochlorite is improved by blending an anionic surfactant such as alkyl diphenyl ether sulfonate. In addition, JP-A-5
JP-A-2-9006 describes that in a hypochlorite-containing liquid cleaning bleaching composition, a surfactant represented by the following [Chemical Formula 3] contributes to the stability of hypochlorite. ing.

[0004]

[Chemical 2]

[0005]

[Chemical 3]

Further, JP-A-54-114485 discloses that the stability of hypochlorite can be improved by alkali metal pyrophosphate, and JP-A-57-40081 discloses periodate ion. A stable aqueous solution of hypochlorite by containing a compound is disclosed in JP-A-63-273.
JP-A-2-212599 discloses a stable detergent composition containing sodium hypochlorite, which is obtained by applying acrylic acid or polyhydroxyacrylic acid or a mixture thereof and chlorine-resistant phosphonate or organic phosphonate.
The publication discloses a stable liquid detergent composition containing sodium hypochlorite, a sulfobetaine-type amphoteric surfactant, an amine oxide and a saturated fatty acid having 8 to 18 carbon atoms.

Generally, the cleaning / bleaching composition is
No special consideration is given to quality deterioration during storage,
Especially in the summer, it is often stored under severe conditions such as storage under high temperature.

However, none of the hypochlorite-containing cleaning / bleaching composition described in the above publication has sufficient storage stability for a long period of time under severe conditions.

Further, in order to enhance the cleaning bleaching power and safety of the above-mentioned cleaning / bleaching agent composition, means for increasing the viscosity of the system have been tried aiming at the following points and. Improving retention of dirt on vertical surfaces and inclined surfaces. Even if it is sprinkled directly from the container, it will not splash as a droplet.

Regarding the thickening technology of the above-mentioned cleaning / bleaching agent composition, for example, as an application example of the inorganic thickening agent, hydrated aluminum such as attapulgite and montmorillonite,
A method using a magnesium silicate (for example, JP-A-57-168999) and a method using a sepiolite-based clay mineral (for example, JP-B-61-2196).
No. 9, etc.) and the like, and as the organic thickener, water-soluble polymer compounds such as polyvinyl alcohol, methyl cellulose and xanthan gum are generally used.

Further, as an application example of the thickening method using a combination of surfactants, Japanese Patent Application Laid-Open No. 56-90897 discloses an alkali metal hypochlorite aqueous solution thickened with a detergent active compound as a strong base. A liquid concentrated chlorine bleaching agent is disclosed which can be stably retained for a long period of time by containing a buffer salt of a weak inorganic acid.

Further, JP-A-57-8298 discloses a thickened aqueous bleaching composition comprising an alkali metal hypochlorite and a carboxylated surfactant represented by the following [Chemical formula 4]. In the publication, by adding sodium chloride so that the sodium chloride content is 4 to 25% by weight in the hypochlorite-containing bleaching composition, the bleaching composition has an excellent stable thickening effect. It is also described that can be given. However, since sodium chloride accelerates the decomposition of hypochlorite, the long-term storage stability of the active ingredient is not sufficient. There is no description or suggestion in the above publication that stabilization and thickening of the hypochlorite-containing bleaching composition can be achieved by adding a limited amount of sodium chloride.

[0013]

[Chemical 4]

Further, JP-A-60-186600 discloses a hard surface containing an aqueous solution of a hypochlorite ion-generating substance and a cleaning active ingredient such as a specific trialkylamine oxide. A suitable thickening and bleaching composition is disclosed in JP-A-60-92398, in which an aqueous alkali metal hypochlorite solution is mixed with three specific types of cleaning active substances, and the temperature rises during storage. A bleaching composition which does not decrease in viscosity even when the viscosity is reduced is disclosed in JP-A-62-192499, a thickening agent comprising a fatty acid alkali metal salt substituted with a fatty acid-forming substance and a detergent active substance, and an aqueous solution of a specific bleaching agent. A liquid bleaching composition having a low initial viscosity and a high final viscosity, which is obtained by blending ## STR3 ## in JP-A-62-250100, discloses a specific ratio of a specific trialkylamine oxide and a saturated fatty acid alkali metal salt. By blending, pourable thickened liquid bleach composition based on alkali metal hypochlorite solution and the like are disclosed, respectively.

Further, the alkali metal hypochlorite, which is a bleaching component of the above-mentioned cleaning / bleaching agent composition, is a strong oxidizing agent, and its handling must be done with extreme caution. Therefore, in consideration of the safety of the user, the cleaning agent is colored to clarify the application site of the cleaning / bleaching agent. To perform such coloring, chlorine-based oxidation cleaning
In a bleaching composition, the colorant easily fades over time, and thus the selection of the colorant is particularly important.

Therefore, for example, in Japanese Patent Application Laid-Open No. 53-8604, stable copper chlorite is prepared by mixing a specific copper phthalocyanine pigment in a system consisting of hypochlorous acid and caustic alkali for coloring. A blue-based coloring method is disclosed in JP-A-58-8.
JP-A-2-218798 discloses a colored alkali metal hypochlorite composition comprising a copper phthalocyanine pigment containing 5 to 15% by weight of sodium hypochlorite and 6 to 16 halogen atoms. Japanese Patent Laid-Open Publication No. 2004-242242 discloses a colored liquid cleaning bleaching agent comprising an alkali metal hypochlorite, an alkaline substance, an amine oxide, a saturated fatty acid having 1 to 18 carbon atoms and a copper phthalocyanine pigment having 8 to 16 halogen atoms. It is disclosed.

Even if the above hypochlorite-containing cleaning / bleaching composition can be imparted with long-term storage stability and viscosity characteristics, if it is made into a coloring system, it has long-term storage stability, especially under severe conditions. The storage stability of is not always guaranteed.
Such storage stability is not improved by applying the above-mentioned means for improving the stability of hypochlorite. Further, in order to obtain a coloring system, when the phthalocyanine-based pigment is added to the hypochlorite-containing cleaning / bleaching agent composition, when the number of substituted halogens of the phthalocyanine-based pigment exceeds a specific range, storage at high temperature or There is a problem that fading progresses due to long-term storage. For this reason, further improvements are desired for the storage stability of the colored cleaning / bleaching composition under severe conditions and the prevention of discoloration over time.

Therefore, an object of the present invention is to have excellent storage stability without fear of decomposition of alkali metal hypochlorite even when stored for a long time under severe conditions, and to have a viscosity characteristic. To provide a bleaching agent composition containing an alkali metal hypochlorite having high cleaning bleaching power and high safety, and further, as a coloring system, without being adversely affected at all, the viscosity characteristics are imparted to the bleaching agent composition. It is intended to provide a bleaching agent composition capable of exhibiting the effects of the bleaching agent composition.

[0019]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that a bleaching composition containing a specific amount of an alkali metal hypochlorite, a polyoxyalkylene alkyl ether carboxylate and an alkaline agent, Further, by containing a specific amount of a specific alkylbenzene sulfonate and / or a specific alkylnaphthalene sulfonate,
It was found that the above object can be achieved.

The present invention has been made based on the above findings, and provides a bleaching composition containing the following components (a), (b), (c) and (d) in the following amounts: To do. (A) Alkali metal hypochlorite; 0.1 to 13% by weight (b) Polyoxyalkylene alkyl ether carboxylate; 0.01 to 20% by weight (c) Having an alkyl group having 8 to 20 carbon atoms Linear alkylbenzene sulfonate and / or having 8 to 20 carbon atoms
Linear alkylnaphthalene sulfonate having an alkyl group of 0.1 to 10% by weight (d) an alkali agent; 0.1 to 5% by weight

The bleaching composition of the present invention will be described in detail below.

The alkali metal hypochlorous acid salt of the component (a) used in the present invention is used as a bleaching component and is not particularly limited, but the component (a) includes hypochlorous acid. Potassium, sodium hypochlorite and the like are preferable,
Further, a mixture of these in an arbitrary ratio is also preferable.

The content of the component (a) in the composition is
0.1 to 13% by weight (hereinafter, simply expressed as%), preferably 1 to 7% from the viewpoint of stability and performance. If the content is less than 0.1%, the bleaching performance, especially the bleaching speed will be insufficient, and if it exceeds 13%, the composition stability such as separation of the composition system may not be obtained, or The odor of chlorous acid becomes strong, which is not preferable in terms of product form. Incidentally, alkali metal hypohalites other than the above alkali metal hypochlorite have problems of cost and stability, and are not suitable for the composition of the present invention.

The polyoxyalkylene alkyl ether carboxylate of the component (b) used in the present invention improves the viscosity stability by solubilizing the component (c) described below, which is a thickening component, and at the same time resists stains. The component (b) is used to increase the penetrability and improve the bleaching performance, and the component (b) is represented by the following general formula (I) The compound represented by these is preferable.

[0025]

[Chemical 5]

In the compound represented by the general formula (I), the number of carbon atoms represented by R ₁ in the general formula (I) is 6
Examples of the linear or branched alkyl group of ~ 22 include hexyl group, octyl group, decyl group, dodecyl group, tetradecyl group, hexadecyl group, octadecyl group, and the like.
Particularly, a dodecyl group and a tetradecyl group are preferable, examples of the aryl group include a phenyl group, a tolyl group, a xylyl group, a naphthyl group and the like. Particularly, a phenyl group is preferable, and an alkylaryl group is preferably a p-nonylphenyl group. Further, R ₃ in R ₃ CONH- group represented by R ₁
Examples of the linear or branched alkyl group having 5 to 22 carbon atoms represented by include hexyl group, octyl group, decyl group, dodecyl group, tetradecyl group, hexadecyl group, octadecyl group, and the like. preferable.

The linear or branched alkylene group having 2 to 4 carbon atoms represented by A in the above general formula (I) is an ethylene group, a propylene group, an isopropylene group,
Examples thereof include a butylene group and the like, and an ethylene group and an isopropylene group are particularly preferable.

Examples of the linear or branched alkylene group having 1 to 4 carbon atoms represented by R ₂ in the above general formula (I) include methylene group, propylene group, isopropylene group and butylene group. Of these, a methylene group, a propylene group and an isopropylene group are particularly preferable.

The alkali metal atom represented by M in the above general formula (I) includes sodium atom, potassium atom and the like, and sodium atom is particularly preferable, and the alkaline earth metal atom includes calcium, magnesium and the like. Is mentioned.

Further, n in the above general formula (I) is 1
The number is from 50 to 50, but the range from 1 to 20 is particularly preferable.

Specific examples of the component (b) include sodium hexyl polyoxyethylene oxaacetate (p [number of moles of ethylene oxide added] = 3.8), sodium octyl polyoxyethylene oxaacetate (p = 4.5). ), Sodium dodecyl polyoxyethylene oxaacetate (p = 1
0), sodium dodecyl polyoxypropylene oxaacetate (p = 2), sodium dodecyl polyoxyethylene oxapropionate (p = 5), sodium tetradecyl polyoxyethylene oxaacetate (p = 10), nonylphenyl polyoxyethylene oxa Sodium acetate (p = 6.0) and the like can be mentioned. Of these, alkyl (straight or branched chain having 8 to 10 carbon atoms) polyoxyethylene (p = 1 to 8) oxa is particularly preferable in terms of production cost. Preference is given to using mixtures such as sodium acetate, alkyl (straight chain or branched chain with 12 to 14 carbon atoms) polyoxyethylene (p = 1 to 20) sodium oxaacetate.

The content of the above component (b) in the composition is
It is 0.01 to 20%, preferably 0.01 to 10%. If the content is less than 0.01%, the permeability to stains, the viscosity stability and the stability of available chlorine are insufficient, and if it exceeds 20%, it is not economical.

Component (c) used in the present invention is a linear alkylbenzene sulfonate having an alkyl group having 8 to 20 carbon atoms and / or a linear alkylnaphthalene sulfone having an alkyl group having 8 to 20 carbon atoms. The acid salt is used for increasing the viscosity of the composition of the present invention to enhance the bleaching property and stability, and is not particularly limited, but as the component (c), decylbenzene sulfone is used. Sodium acid, sodium dodecylbenzene sulfonate,
Examples thereof include sodium dodecylnaphthalene sulfonate, sodium tetradecylbenzene sulfonate, sodium hexadecylbenzene sulfonate, sodium octadecylbenzene sulfonate, etc. However, in general, it is an inexpensive alkyl group having about 10 to 14 carbon atoms. A mixture of sodium alkylbenzene sulfonates with is preferred.

The component (c) is stable in an aqueous solution of the alkali metal hypochlorite of the component (a) and is soluble in the alkaline aqueous solution.

The content of the above component (c) in the composition is
It is 0.1 to 10%, preferably 0.1 to 5%. If the content is less than 0.1%, a sufficient thickening effect cannot be obtained, and if it exceeds 10%, the viscosity does not increase and gelation occurs.

The alkali agent of the component (d) used in the present invention is used as a stabilizer of the alkali metal hypochlorite of the above component (a) and is not particularly limited, but the component is not limited. Examples of (d) include caustic alkali and silicates. Examples of the caustic alkali include sodium hydroxide, and examples of the silicate include sodium metasilicate. These alkaline agents are
These may be used alone or in admixture of two or more.

The content of the above component (d) in the composition is
It is 0.1 to 5%, preferably 0.1 to 2%. If the content is less than 0.1%, the stability of the composition system will be poor, and if it exceeds 5%, it may have an adverse effect on the skin or the eye mucous membrane, and There is no improvement in the effect due to the increase.

The composition of the present invention preferably contains an alkali metal halide [component (e)], and the alkali metal halide [component (e)] serves as a stabilizer for improving the viscosity of the composition. Used.

The above-mentioned component (e) is not particularly limited, but examples thereof include salt, potassium chloride and the like, and salt is particularly preferable from the viewpoint of cost.

The content of the above component (e) in the composition is preferably 0.1 to 4%, more preferably 0.1 to 3%. When the content is less than 0.1%, sufficient viscosity stability cannot be obtained, and when it exceeds 4%, decomposition of the alkali metal hypochlorite of the component (a) is promoted. Is not preferred.

Generally, the above-mentioned component (a), the alkali metal hypochlorite, contains the component (e), which is an alkali metal halide salt, in the composition of the present invention. The total amount of the alkali metal halide of the component (e) is the content (0.1%) in the composition of the component (e).
˜4%) is preferred.

The composition of the present invention can be made into a coloring system, and when it is used as a coloring system, one or more kinds of phthalocyanine pigment [component (f)] is used to form a coloring system. Preferably, even in the case of such a coloring system,
It has very good storage stability. The phthalocyanine pigment [component (f)] is not particularly limited, but a compound represented by the general formula (II) of the following [Chemical Formula 6] is preferable.

[0043]

[Chemical 6]

In the above general formula (II), the halogen atom represented by X is preferably one or a combination of two or more selected from a chlorine atom, a bromine atom and an iodine atom. Further, as the metal atom represented by M, Is preferably one kind or a combination of two or more kinds among iron atom, cobalt atom and copper atom, and particularly preferably copper atom.

As the phthalocyanine pigment [component (f)] represented by the general formula (II), one having a halogen substitution number n in the general formula (II) of 0 to 16, particularly 8 to 16 is used alone. Alternatively, it can be preferably used as a mixed pigment whose color is adjusted.

The above phthalocyanine pigment [component (f)]
Is an aqueous dispersion at room temperature and usually has a particle size of 0.01
Those having a size of up to 0.3 μm are commercially available, and the commercially available products can be used.

The content of the above component (f) in the composition is preferably 0.00001 to 0.01%. If the content is less than 0.00001%, the coloring effect is small, while if it exceeds 0.01%, the dispersion stability tends to decrease.

The sulfonates and carboxylates of the compound represented by the general formula (II) above cannot be used because they impair the storage stability of the composition of the present invention.

When the above-mentioned phthalocyanine-based pigment [component (f)] is added to the composition of the present invention, a water-soluble polymer having a sulfonic acid group [component (g) for the purpose of further stabilizing the dispersion of the pigment. ] Is preferably blended.

Examples of the water-soluble polymer having a sulfonic acid group as the above-mentioned component (g) include a water-soluble polymer composed of a formaldehyde condensate of an aromatic compound having a sulfonic acid group or a sulfonate group or a salt thereof, or styrenesulfonic acid. , 2-acrylamido-2-methylpropane sulfonic acid, allyl sulfonic acid, vinyl sulfonic acid, methallyl sulfonic acid and sulfopropyl methacrylate, or a water-soluble monomer comprising one or more monomers selected from the group consisting of salts thereof. Polymers or copolymers are preferred. The aromatic compound having a sulfonic acid group or a sulfonate group, petroleum sulfonic acid or a salt thereof, naphthalene sulfonic acid or a salt thereof,
Those selected from the group consisting of lignin sulfonic acid or a salt thereof, creosote oil sulfonic acid or a salt thereof and cresol alkylene sulfonic acid or a salt thereof are preferable.

Further, specific examples of the water-soluble polymer having a sulfonic acid group of the above component (g) include metacresol methylene sulfonic acid-shefferic acid formalin condensate salt (for example, Demol SSL; trade name of Kao Corporation). ), Meta-cresol methylene sulfonic acid formalin condensate salt (for example, Demol SC30; trade name of Kao Corporation),
Butylnaphthalenesulfonic acid formalin condensate salt, creosote oil sulfonic acid formalin condensate salt (for example, Demol C; trade name of Kao Corporation), naphthalenesulfonic acid formalin condensate salt (for example, Demor NL; Kao (stock) )), Lignin sulfonic acid formalin condensate salt, melamine sulfonic acid formalin condensate salt, sodium styrene sulfonate polymer, and the like.

Among the above-mentioned components (g), from the viewpoint of maintaining good stability during storage of the above-mentioned phthalocyanine-based pigment [the above-mentioned component (f)] in the composition, naphthalene sulfonate formalin condensate salt, butyl naphthalene. Sulfonic acid formalin condensate salt, meta-cresol methylene sulfonic acid-sherfaric acid formalin condensate salt, meta-cresol methylene sulfonic acid formalin condensate salt, creosote oil sulfonic acid formalin condensate salt, etc. Particularly preferred.

The content of the above component (g) in the composition is preferably 0.001 to 3% by weight, more preferably 0.0 to 3% by weight.
It is 1 to 1.5% by weight.

The composition of the present invention further comprises the above component (b).
Surfactant (polyoxyalkylene alkyl ether carboxylate) or the surfactant of the above component (c) (straight chain alkylbenzene sulfonate having an alkyl group having 8 to 20 carbon atoms and / or 8 to 20 carbon atoms). In addition to the linear alkylnaphthalene sulfonates having an alkyl group of 1), other surfactants as commonly used can be added. The other surfactant is not particularly limited, but examples of the other surfactant include alkane sulfonates, fatty acid salts, alkyl sulfate ester salts, and alkylbenzene sulfonates other than the above component (c). And alkylnaphthalene sulfonate, alkyl sulfosuccinate, alkyl diphenyl ether disulfonate, alkyl phosphate, polyoxyethylene alkyl sulfate ester salt, polyoxyethylene alkyl allyl sulfate ester salt, polyoxyethylene alkylphenyl ether sulfonate salt, etc. Anionic surfactants (excluding nitrogen-containing anionic surfactants such as amino acid derivatives); polyoxyethylene alkyl ethers, polyoxyethylene alkyl allyl ethers, oxyethylene / oxypropylene block copolymers, low / high Nonionic surfactants such as ethylene oxide / propylene oxide adducts of alcohols (excluding ester type, amine type, amide type and sugar skeleton nonionic surfactants); amphoteric surfactants such as sulfobetaine and carbobetaine; Examples thereof include cationic surfactants, and these can be used alone or in combination of two or more.

Further, the composition of the present invention is prepared by combining two or more kinds of the above-mentioned other surfactants by a known technique and an electrolyte such as an inorganic water-soluble salt such as NaCl, mirabilite, calcium salt or magnesium salt. It is possible to further improve the stability effect of the present invention by blending it into a thickening system.

Further, by trapping a heavy metal contained in a trace amount in the composition of the present invention with a chelating agent, further stabilization can be achieved. For example, aminophosphonic acid-N-oxide, especially [nitrilotris (methylene)] trisphosphonic acid-N-oxide, 2-phosphonobutane-1,2,4-tricarboxylic acid salt, 1-hydroxyethane-1,1-diphosphone. Application of acid salts, cross-linked polycarboxylic acid salts and the like can be mentioned as application examples of known techniques.

Examples of aminocarboxylic acid salts such as ethylenediamine tetraacetate and nitrilotriacetate; oxycarboxylic acid salts such as citrate, malate and tartrate; succinic acid, glutaric acid, adipic acid, etc. The application of a chelating agent such as a dicarboxylic acid type compound; a phosphate type compound such as pyrophosphate, tripolyphosphate, hexametaphosphate, etc. is not preferable because the decomposition itself is caused in the hypochlorous acid aqueous solution.

In the composition of the present invention, aromatic sulfonates such as toluene sulfonate, xylene sulfonate, cumene sulfonate, naphthalene sulfonate, and the like, as a builder for improving the cleaning performance; fluorescent dyes. ; BH
It is also possible to incorporate components such as radical scavengers such as T; abrasives and turbid agents such as calcium carbonate, silica, montmorillonite, and smectite; perfumes such as terpene alcohol-based perfumes. The bleaching composition of the present invention usually contains the above essential components (a), (b),
It is prepared by adding a balanced amount of water to (c) and (d) and the above optional components other than the above.

[0059]

EXAMPLES The bleaching composition of the present invention will be described in more detail with reference to the following examples. However, the invention is not limited by these examples.

Example 1 Each liquid bleaching agent composition having the composition shown in the following [Table 1] and [Table 2] (composition ratio unit: wt%) was prepared, and the storage stability, color stability and viscosity of each of them were measured. It evaluated based on the following evaluation methods and evaluation criteria. The results are shown in [Table 1] and [Table 2] below.

Evaluation Method for Storage Stability The prepared liquid bleach composition was applied to a polyethylene cylinder cylinder.
600 ml tor (full volume 725 ml, bottom wall thickness 0.6 mm)
Fill and seal, store at 50 ° C for 1 month, and then take it out.
Then, the bulge of the cylinder bottle was visually observed. <Evaluation Criteria for Storage Stability> ○: No change △: Bottle bottom swells slightly and the bottle does not sit well
×: The bottom of the bottle swells and the bottle collapses.
The internal pressure is 0.6 kg / cm ²When it is above, the bottle is like this
State)

Evaluation Method of Color Stability 600 ml of the prepared colored liquid bleaching composition was filled and sealed in a polyethylene cylinder bottle (full volume 725 ml, bottom wall thickness 0.6 mm) and stored at 50 ° C. for 1 month. After that, a part of the sample was taken, and the color change of the sample after storage was visually observed in comparison with the sample before storage. <Evaluation Criteria for Color Stability> ◯: No color change Δ: Slightly faded ×: Decolorized

Evaluation Method of Viscosity and Evaluation Criteria The prepared liquid bleaching agent composition was measured using a B type viscometer at 20
C., 60 rpm, the viscosity after 60 seconds (immediately after compounding) was measured and expressed in units of cP (centipoise). However, 1 cP = 1
It is 0 ^-3 Nsm ^-2 . Further, as a viscosity stability test, the same sample was stored at 40 ° C. for 1 month, and then the viscosity was measured again under the same conditions.

[0064]

[Table 1]

[0065]

[Table 2]

From the above [Table 1] and [Table 2], the products 1 to 8 of the present invention are excellent in storage stability and viscosity stability, and Comparative Example 1 containing no component (b) is viscosity stability and color stability. It was found that Comparative Examples 2 and 3 containing no components (b) and (c) did not thicken, and Comparative Example 4 containing no component (c) had poor storage stability.

The thickening system and the thickening / coloring system product 1 of the present invention
~ 8 is a toilet bowl cleaner, drain pipe cleaner,
Suitable for cleaning small items such as kitchen garbage trays.

[0068]

The bleaching composition of the present invention has excellent storage stability without fear of decomposition of the alkali metal hypochlorite even when stored for a long time under severe conditions, and It is a bleaching composition having high viscosity and washing bleaching power and high safety (claim 1). The bleach composition of the present invention,
By containing a specific amount of alkali metal halide,
Further, storage stability and viscosity stability are improved (claim 2).
Since the bleaching agent composition of the present invention contains a specific polyoxyalkylene alkyl ether carboxylate, the above effect is further improved (claim 3). The bleaching composition of the present invention can be colored by containing a phthalocyanine pigment, and even this colored system is excellent in storage stability and color stability (claim 4). . The bleaching agent composition of the present invention contains a phthalocyanine-based pigment and a water-soluble polymer having a sulfonic acid group, whereby the pigment dispersibility is enhanced and the above-mentioned effects (storage stability and color stability) are further improved. Item 5). The bleaching agent composition of the present invention contains a water-soluble polymer having a specific sulfonic acid group together with a phthalocyanine-based pigment, whereby the pigment dispersibility is further enhanced and the above effects (storage stability and color stability) are further improved. (Claim 6).

Claims (6)

[Claims] 1. A bleaching composition comprising the following components (a), (b), (c) and (d) in the following amounts. (A) Alkali metal hypochlorite; 0.1 to 13% by weight (b) Polyoxyalkylene alkyl ether carboxylate; 0.01 to 20% by weight (c) Having an alkyl group having 8 to 20 carbon atoms Linear alkylbenzene sulfonate and / or having 8 to 20 carbon atoms
Linear alkylnaphthalene sulfonate having an alkyl group of 0.1 to 10% by weight (d) an alkali agent; 0.1 to 5% by weight 2. An alkali metal halide [component (e)]
The bleaching agent composition according to claim 1, wherein the bleaching agent composition contains 0.1 to 4% by weight. 3. The bleaching agent composition according to claim 1, wherein the component (b) is a compound represented by the following general formula (I). [Chemical 1] 4. A phthalocyanine pigment [component (f)] in an amount of 0.00001 to 0.01% by weight.
The bleaching composition according to any one of 1. 5. The bleaching composition according to claim 4, which contains 0.001 to 3% by weight of a water-soluble polymer [component (g)] having a sulfonic acid group. 6. The water-soluble polymer, wherein the component (g) is a formaldehyde condensate of an aromatic compound having a sulfonic acid group or a sulfonate group, or a salt thereof, or styrenesulfonic acid, 2-acrylamido-2-methyl. 6. A water-soluble polymer or copolymer comprising one or more monomers selected from the group consisting of propanesulfonic acid, allylsulfonic acid, vinylsulfonic acid, methallylsulfonic acid and sulfopropylmethacrylate or salts thereof. The bleach composition described.