JP2000336393A - Bleaching agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a bleaching agent having high bleaching effect, having no pungent odor, excellent in user-friendliness and especially effective to a hard surface by including a specific organic peroxide and a specific ingredient. SOLUTION: This bleaching agent is obtained by including (A) an organic peroxide of formula I [wherein A is a (hydroxyl group-substituted) 1-9C alkyl, amino, a (hydroxyl group-substituted)benzene ring or the like; R1 is H or a (hydroxyl group-substituted) 1-5C, alkyl and; (n) is 1-10] so as for its concentration to be >=1 wt.% (preferably 1-20 wt.%) when dissolved in water and (B) 0.001-20 wt.% (preferably 0.01-10 wt.%) at least one kind selected from the group consisting of a monoterpene hydrocarbon, a sesquiterpene hydrocarbon, a monoterpene alcohol, a sesquiterpene alcohol and a 7-10C aromatic alcohol and, if necessary, (C) 0.01-90 wt.% (preferably 0.1-85 wt.%) alkalizing agent. The ingredient A preferably is a compound of formula II [wherein (n) is 1-10, preferably 1-8, more preferabaly 1-6].

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention provides a high bleaching effect,
Bleaching agent with no pungent odor.

[0002]

2. Description of the Related Art Dark stains on bathroom ceilings, tile joints, plastic walls, and triangle corners in kitchens are caused by pigments produced by molds, and cause the use of cleansers and surfactants. It is difficult to remove with formulated products. Chlorine bleach containing hypochlorite is marketed for mold removal and cleaning.However, due to the strong bleaching power, sufficient care must be taken when using it. There is a problem that it has a pungent odor and is painful when used in a small bathroom or the like.

[0003] On the other hand, there are known oxygen bleaching agents having a low pungent odor, as disclosed in JP-A-2-252800 and JP-A-3-97798. However, these oxygen-based bleaches require a bleach activator and hydrogen peroxide or a hydrogen peroxide-releasing substance to react under alkalinity, resulting in problems such as the package being in a packaged state, or in powder form. When used after being dissolved in water, there is a problem that the amount of the agent at one time is increased.

An object of the present invention is to provide a bleaching agent having a high bleaching effect, no irritating odor, and excellent usability, particularly a bleaching agent effective for hard surfaces.

[0005]

Means for Solving the Problems The present invention provides (a) the following general formula (1):

[0006]

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[In the formula, A represents an alkyl group having 1 to 9 carbon atoms which may be substituted with a hydroxyl group, a carboxyl group, an amino group, a nitro group or a benzene ring or a naphthalene ring which may be substituted with a hydroxyl group. R ¹ represents a hydrogen atom or a carbon number of 1 to 5 which may be substituted by a hydroxyl group;
And n represents an integer of 1 to 10. And (b) bleaching containing at least one selected from the group consisting of monoterpene hydrocarbons, sesquiterpene hydrocarbons, monoterpene alcohols, sesquiterpene alcohols and aromatic alcohols having 7 to 10 carbon atoms. Provide the agent.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The organic peroxide of the component (a) used in the present invention is represented by the following general formula (1), and among them, the following general formula (2):

[0009]

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[Wherein, n represents an integer of 1 to 10. One or more combinations selected from those represented by the following formulas are preferred, and n in the general formula (2) is more preferably 1 to 8, and most preferably 1 to 6.

The content of the component (a) in the bleaching agent is 1% by weight or more when dissolved in water, and is appropriately determined according to the bleaching power required for the intended use. When used for mold removal cleaning, it is preferable to dissolve it in water and mix it in an amount of 1 to 20% by weight, more preferably 1 to 20% by weight.
The content is preferably set to 10% by weight.

The component (b) used in the present invention includes monoterpene hydrocarbons such as α-pinene, β-pinene, D- or L-limonene, and terpinolene; sesquiterpene hydrocarbons such as β-caryophyllene and cedrene; linalool; Monoterpene alcohols such as geraniol, nerol, citronellol, hydroxycitronellol, tetrahydrolinalool, dihydromyrcenol, α-terpineol, 1-menthol, borneol, sesquiterpene alcohols such as farnesol, nerolidol, wantalol, cedrol, vetiverol, and benzyl alcohol ,
7 to 10 carbon atoms such as β-phenylethyl alcohol, dynamic alcohol, dimethylbenzyl carbinol, etc.
One or more selected from aromatic alcohols of
Among these, D- or L-limonene is preferred.

The content of the component (b) in the bleaching agent is preferably 0.001 to 20% by weight, more preferably 0.01 to 20% by weight.
-10% by weight.

The bleaching agent of the present invention preferably contains an alkali agent in an amount of 0.01 to 90% by weight, more preferably 0.1 to 85% by weight, in order to enhance the bleaching effect and improve the solubility in water. I do.

The alkaline agent is a compound exhibiting alkalinity in an aqueous solution, such as an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide, ammonium hydroxide, an amine derivative such as mono-, di- or triethanolamine, or a peroxide. Alkali metal carbonates such as sodium carbonate and potassium carbonate to which hydrogen oxide may be added, carbonates such as ammonium carbonate, alkali metal silicates such as sodium silicate and potassium silicate, silicates such as ammonium silicate, alkalis One or more selected from metal phosphates, alkali metal borates to which hydrogen peroxide may be added, and the like are preferable.

The bleaching agent of the present invention preferably contains a surfactant in order to enhance the bleaching effect and, for example, impart an effect of reducing the adhesion and mist caused by foam when sprayed with a trigger spray in an aqueous solution. 0.01 to 40% by weight, more preferably 0.1 to 20% by weight.

The surfactants include cationic surfactants, amphoteric surfactants, and nonionic surfactants described in JP-A-9-310098, page 3, column 4, line 9 to page 9, column 15, line 49. And at least one selected from anionic surfactants, and among these, at least one selected from amphoteric surfactants, nonionic surfactants and anionic surfactants is more preferable.

The bleaching agent of the present invention, when sprayed with a trigger spray in the form of an aqueous solution, enhances the adhesion and enhances the bleaching effect by using toluenesulfonic acid, xylenesulfonic acid, cumenesulfonic acid and alkenylsuccinic acid. In addition, it is preferable to mix these alkali metal salts preferably in an amount of 0.01 to 30% by weight, more preferably 0.05 to 20% by weight.

The bleaching agent of the present invention preferably contains 0.001 to 10% by weight of a water-soluble polymer in order to improve the bleaching effect by adhering the component (a) when sprayed with a trigger spray in the state of an aqueous solution. %, More preferably 0.01 to 5
It is preferable to mix by weight%.

The water-soluble polymer is described, for example, in JP-A-8-20.
No. 9194, page 6, column 10, line 20 to page 7, column 11, line 3 include at least one selected from the following, and among these, at least one selected from the following (i) to (iv) is preferable .

(I) guar gum, locust bean gum,
Natural polymers derived from plants such as carrageenan, alginic acid, gum arabic, pectin; (ii) natural polymers derived from microorganisms such as xanthan gum; (iii) oxidation, methylation, carboxymethylation of cellulose, starch, cellulose or starch. A cellulose derivative or a starch derivative processed by a treatment such as hydroxyethylation, hydroxypropylation, or cationization; (iv) a polyacrylic acid homopolymer or a polyacrylic acid derivative that is a copolymer with a monomer copolymerizable with acrylic acid; Crosslinked polyacrylic acid homopolymer or polyacrylic acid derivative.

The bleaching agent of the present invention preferably contains an organic acid in an amount of 0.01 to 10 to maintain the pH and improve the bleaching effect.
It is preferable to add 40% by weight, more preferably 0.1 to 30% by weight. The organic acid is selected from citric acid, succinic acid, malic acid, fumaric acid, tartaric acid and malonic acid
More than species are preferred.

The bleaching agent of the present invention preferably contains a sequestering agent in an amount of from 0.001 to 2 in order to improve the bleaching effect.
It is preferable to add 0% by weight, more preferably 0.01 to 10% by weight.

The sequestering agent is disclosed in JP-A-8-2091.
No. 94, page 7, column 12, lines 9-20, and one or more of them. Specific examples include tripolyphosphoric acid, pyrophosphoric acid, orthophosphoric acid, hexametaphosphoric acid, and alkali metal salts thereof, Acetic acid, hydroxyiminodiacetic acid, dihydroxyethylglycine,
Nitrilotriacetic acid, hydroxyethylenediaminetriacetic acid,
Diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid and their alkali metal salts or alkaline earth metal salts, aminotrimethylenephosphonic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetramethylenephosphonic acid, diethylenetriaminepentamethylenephosphonic acid Acids, N-oxides of aminotrimethylene phosphonic acid and their alkali metal salts or alkaline earth metal salts, polyα-hydroxyacrylic acid and its alkali metal salts.

The bleaching agent of the present invention further includes a fragrance, an antibacterial agent, a pigment, a dye, a bulking agent such as a cellulose compound or a sulfate, or a filler such as polyethylene glycol or a water-soluble polymer compound within a range not to impair the object of the present invention. Granulation auxiliaries and the like can be blended.

The bleaching agent of the present invention comprises the components (a) and (b)
If necessary, form non-aqueous solid preparations such as powders, flakes, granules, tablets, etc., in which all of the other components are combined into one or two or more components in any combination Can be. In addition, the component (a) may be in the form of a non-aqueous solid, and the other components may be in the form of an aqueous solution or suspension, and mixed at the time of use. When a solid preparation is prepared, the preparation can be prepared with a water-soluble binder such as polyethylene glycol or sodium polyacrylate, and further coated with hydroxypropoxymethyl cellulose or the like. The present invention has less irritating odor than the conventional chlorine bleaching agent, has less limitation of the dosage form than when using the conventional bleaching activator and the hydrogen peroxide releasing body, and uses the hydrogen peroxide releasing body. Since it is not necessary to do so, the amount used at one time can be reduced.

The bleaching agent or bleach product of the present invention can be applied to a hard surface by spraying or spraying the target surface with a discharge container such as a trigger spray or a squeeze container, or by impregnating paper or cloth. A form in which a compress is applied, a form in which the composition is applied with a brush or a roller, or the like can be used.

[0028]

EXAMPLES Products 1 to 6 of the present invention and Comparative product 1 Bleaches having the compositions shown in Table 1 were prepared. The bleaching effect was tested by the following method using a solution prepared by dissolving these bleaching agents in the amounts shown in Table 1 in 100 ml of water. All of the bleaching agents shown in Table 1 were in the form of powder and packaged. As the component (a), a phthalimide-type organic peroxide produced by the following synthesis method was used. Table 1 shows the results.

(Synthesis method) 74 g of phthalic anhydride and 66 g of 6-aminocaproic acid were stirred at 160 ° C. for 1 hour in a beaker to obtain 6-phthalimidocaproic acid (yield: 65).
%). While stirring 60 g of sulfuric acid, 20 g of 6-phthalimidocaproic acid was added thereto, the mixture was cooled to 5 ° C., and 5.7 g of 60% hydrogen peroxide was added dropwise while maintaining the same temperature, followed by stirring for 2 hours. 20% (NH ₄ ) ₂ SO ₄ 2
After adding 00 ml and stirring for 15 minutes, the mixture was filtered on a porous septum to obtain a product of the following formula. The yield was 83%, and the purity as determined from the amount of peracid produced was 72%.

[0030]

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(Testing method for bleaching effect) Inoculation with Cladosporium herbarum
A plastic plate (made of ABS resin) cultured at 0 ° C. for 14 days was used as a model plate. 40μ aqueous solution of each bleach
1 was dropped on a model plate, left for 15 minutes, washed with water and air-dried, and then a colorimeter 1001 manufactured by NEC Corporation was used.
The lightness (L value) was measured using DP. The original L value of the plastic plate was 92.4, and the L value of the model plate was 65 to 75. The higher the L value, the higher the mold removal rate (the higher the bleaching effect).

[0032]

[Table 1]

Inventive Product 7, Comparative Product 2 Bleaches having the compositions shown in Tables 2 and 3 were prepared and evaluated for odor according to the following evaluation method. The results are shown in Tables 2 and 3. The product 7 of the present invention was prepared by separately preparing the agent (I) and the agent (II) and mixing them at the time of use.

(Evaluation of odor) Product 7 of the present invention shown in Tables 2 and 3
And, 10 bleaching agents of 25 to 45 years old were each used by spraying 100 g of the bleaching agent in a bathroom of about 6 m ³ with a trigger spray, and the odor during use was evaluated according to the following criteria. The applicable number of people was displayed. ○: No unpleasant odor △: Smell but not painful ×: Smell and painful

[0035]

[Table 2]

[0036]

[Table 3]

[0037]

According to the present invention, a bleaching agent having a high bleaching effect and no irritating odor can be provided.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Junya Hanai 1334 Minato, Wakayama-shi, Wakayama F-term in Kao Corporation Research Laboratory 4H003 AB19 DA08 DA17 DB01 EA16 EB04 EB20 EB22 EB24 EB41 EE06 FA27

Claims (2)

[Claims] (A) The following general formula (1): [In the formula, A is a group having 1 to 1 carbon atoms which may be substituted with a hydroxyl group.
9 represents a benzene ring or a naphthalene ring which may be substituted with an alkyl group, a carboxyl group, an amino group, a nitro group or a hydroxyl group; R ¹ represents a hydrogen atom or the number of carbon atoms which may be substituted with a hydroxyl group; Represents an alkyl group of 1 to 5; n represents an integer of 1 to 10; And (b) bleaching containing at least one selected from the group consisting of monoterpene hydrocarbons, sesquiterpene hydrocarbons, monoterpene alcohols, sesquiterpene alcohols and aromatic alcohols having 7 to 10 carbon atoms. Agent. 2. The organic peroxide of the component (a) is represented by the following general formula (2): [Wherein, n represents an integer of 1 to 10. The bleach according to claim 1, which is at least one member selected from the group consisting of: