JPH09241689A - Bleach composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a bleach composition capable of expressing excellent bleaching abilities and suitable for bleaching dirts of clothing and hard surfaces by mixing an oxygen-based bleaching base compound, a specific bleaching activating agent and a bleaching resistant protease. SOLUTION: This bleach composition comprises 1-50wt.% of (A) an oxygen- based bleaching base compound capable of generating hydrogen peroxide in water (e.g. sodium percarbonate, sodium perborate), >=50wt.% of (B) a bleaching activating agent expressed by a compound of formula I (R<1> is a 9-18C alkyl or alkenyl; M is a salt forming cation such as an alkali metal, an amine, etc., or H) or formula II (R<2> is a 7-18C alkyl or alkenyl) and 0.1-5wt.% of (C) a bleaching resistant protease.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bleaching composition which can be widely used for bleaching various kinds of clothes and bleaching various stains attached to a hard surface.

2. Description of the Related Art At present, sodium percarbonate and sodium perborate are particularly used as bleaching bases for bleaching agents for clothing. However, TAED (tetraacetylethylenediamine), PAG (pentaacetylglucose) and OO cannot be obtained with these bases alone because sufficient bleaching performance cannot be obtained.
Organic peracid precursors such as BS (sodium octanoyloxybenzenesulfonate) have come to be used together. It is known that these bases react with hydrogen peroxide compounds such as sodium percarbonate to generate organic peracid with a high bleaching effect, and effectively remove stains such as food stains and yellowing adhering to clothes. Has been. When the bleaching agent composition containing these organic peracid precursors is stored, the organic peracid precursor is gradually decomposed, the odor becomes worse, and the bleaching effect after storage is reduced. is there.

[0002]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bleaching composition which has a stable aroma even after long-term storage and exhibits excellent bleaching performance even after storage.

The present invention has been made based on the finding that the above object can be efficiently achieved by using a specific organic peracid precursor and a specific enzyme in combination with an oxygen-based bleaching base compound. It is a thing. That is, the present invention provides (a) an oxygen-based bleaching base compound that generates hydrogen peroxide in water,
A bleaching composition comprising (b) a bleaching activator represented by the general formula (I) or (II) and (c) a bleaching-resistant protease.

[0003]

Embedded image

(In the formula, R ¹ is an alkyl group or alkenyl group having 9 to 18 carbon atoms, R ² is an alkyl group or alkenyl group having 7 to 18 carbon atoms, and M is a salt-forming cation or hydrogen.)

BEST MODE FOR CARRYING OUT THE INVENTION As the oxygen-based bleaching base compound which generates hydrogen peroxide in water as the component (a) used in the present invention, percarbonates such as sodium percarbonate and potassium percarbonate and sodium perborate are used. Among these, one or a mixture of two or more such as perborate and the like can be mentioned, and sodium percarbonate is preferable. The amount of the component (a) in the bleaching composition is preferably 1 to 50% by weight (hereinafter abbreviated as%), and more preferably 5 to 40%. The bleach activator used in the present invention is represented by the above general formula (I) or (II). In the formula, R ¹ has 9 to ¹ carbon atoms
A linear alkyl group having 8 carbon atoms is preferable, a linear alkyl group having 9 to 17 carbon atoms is more preferable, and R ² has 7 carbon atoms.
The linear alkyl group having 18 to 18 carbon atoms is preferable, and the linear alkyl group having 7 to 17 carbon atoms is more preferable. Also, M is an alkali metal such as hydrogen, sodium or potassium,
Examples include amines such as ammonium and alkanolamines. Of these, alkali metal or hydrogen is preferable.
In the formula, the SO ₃ M group and COOM group can be in the ortho, meta or para position, but the para position is preferred.

In the present invention, these bleaching activators can be used alone or as a mixture of two or more kinds. These bleach activators can be used in an amount of about
Since it is obtained as a plate-like crystal having a size of m to 100 μm, it may be pulverized by an ordinary method so that the average particle size is smaller than 300 μm, preferably about 200 to 100 μm. However, if the average particle diameter is obtained as less than 300 μm, preferably about 200 to 100 μm by the method for producing a bleach activator, it can be used as it is. In the present invention,
A raw material bleach activator having an average particle size of more than 300 μm may be used.

In the present invention, the bleaching activator can be added as it is to the bleaching agent composition, but it is preferable to add it as a granulated product, and in particular, a granulated product using an organic binder is added. Preferably. The organic binder used here is preferably a water-soluble one which is solid at room temperature and melts by applying heat, more preferably has a melting point of 25 to 100 ° C, further preferably 25 to 80 ° C.
Most preferably, it is an organic binder of 40 to 80 ° C.
Of these, it is particularly preferable to use polyethylene glycol having an average molecular weight of 400 to 30,000, more preferably 1,000 to 20,000, and most preferably 400.
It is a polyethylene glycol of 0 to 20000. or,
It is also preferable to use a polyethylene glycol addition type nonionic surfactant, specifically, 3 to 80 mol of ethylene glycol, preferably 1 mol of ethylene glycol per mol of an aliphatic alcohol having 8 to 20 (preferably 10 to 18) carbon atoms. 10 to
Those added with 50 mol are preferable. Particularly, when polyethylene glycol and / or polyethylene glycol-added nonionic surfactant is used among various organic binders, the solubility of the resulting bleach activator granules can be improved. To further improve solubility, α
-Anionic surfactants such as olefin sulfonates, alkyl sulfates, linear alkyl benzene sulfonates may be added.

The use ratio of the bleach activator and the organic binder can be arbitrary, but the content of the bleach activator is 5
0% or more, preferably 50 to 90%, more preferably 6
It is preferable that 5% to 80% and the balance be an organic binder. The amount of component (b) in the bleaching composition is preferably 1 to 15%, more preferably 1 to 10%.
The bleach activator granulated product can be produced, for example, by the following method. First, a bleaching activator and an organic binder (binder) were introduced into a kneading extruder, preferably a closed compaction treatment device, more preferably a horizontal continuous kneader, and the two were mixed in the kneader. After that or while mixing, the binder is melted and a shearing force is applied to it.
The consolidation treatment is performed at 00 ° C, preferably 45 to 80 ° C.
Further, in addition to the kneader, a single-screw or twin-screw extruder can be used. The kneading extruder used here is specifically K manufactured by Kurimoto Iron Works Co., Ltd.
RC kneader etc. are mentioned. By such kneading and extrusion, it is preferable to obtain a consolidated product having a bulk density of 0.3 to 0.9 g / ml.

A kneaded extrudate having an arbitrary shape can be obtained by the above kneading extrusion, but a cylindrical shape, a prism or a triangular prism having a diameter of 0.5 to 30 mm, preferably 0.7 to 20 mm, more preferably about 1 to 20 mm. It is preferable to extrude such as a strand, a spherical, plate-shaped, or noodle-shaped granulated product. As an extruding method, a mesh plate with a hole may be attached to the outlet of the consolidating device, and a granulated product may be obtained through the plate. In this case, a specific example of the processing apparatus used is Extruded Omics manufactured by Hosokawa Micron Corporation. Further, an extruder may be used for such a granulated product. Examples of the extruder include a pelletizer double (Fuji Paudal Co., Ltd.) and a twin dome gran (Fuji Paudal Co., Ltd.).

In the present invention, the component (c) contains a bleach-resistant protease. Specific examples of the bleach-resistant protease include Durazyme (for example, Durazyme 8.0T) manufactured by Novo Industry Co., and Maxapem (Maxapem CX) manufactured by Gist Co., Ltd., or a mixture of two or more thereof. The bleach-resistant protease can be used alone or as a granulated product by mixing with lipase, cellulase or the like. The amount of component (c) is preferably 0.1 to 5%, more preferably 0.1.
It is 3 to 3%. The component (c) may be added to the granulated product of the bleach activator by adding it together with an organic binder (binder) at the time of granulating the bleach activator, or the powder may be blended with the components (a) and (b). can do.

The bleaching composition of the present invention requires the use of the above components, but may further contain an inorganic salt, a chelate builder, an enzyme and the like. Examples of the inorganic salt include carbonate, sulfate, silicate and the like. The amount used may be arbitrary, but an alkaline one such as sodium carbonate is preferable for improving the bleaching performance, and it is preferably 10 to 70% of the whole bleaching composition. Examples of the chelate builder include tripolyphosphate, ethylenediaminetetraacetate, diethylenetriaminepentaacetate, nitrilotriacetate, inorganic phosphorus compounds represented by 1-hydroxyethane-1,1-diphosphonate, polyphosphonic acids, and phytic acid. Typical examples include organic phosphates, (meth) acrylic acid-based polymers, polycarboxylic acid-based polymers, zeolites and the like. The amount used may be arbitrary, but it is preferably 1 to 10% of the total bleaching composition.

As a protease other than the component (c), N is used.
Examples include Savinase manufactured by OVO, Maxacal, Esperase, Purafect, Opticlean, Kazsase manufactured by Gist, and lipolase manufactured by NOVO can be used as a lipolytic enzyme. In addition, cellulase such as cellzyme manufactured by NOVO, amylase, pectinase, peroxidase and the like can also be used. These can be used as one kind or as a mixture of two or more kinds. The amount used may be arbitrary, but the total amount of the bleaching composition
It is preferable to set it to 0.1 to 2%. In addition to these, a flavoring agent, a redeposition preventing agent such as carboxymethyl cellulose or polyvinylpyrrolidone, a coloring agent, a fluorescent agent, or the like can be added as necessary.

EFFECTS OF THE INVENTION The bleaching composition of the present invention has little deterioration in scent even when stored for a long period of time, and thus can be used as a bleaching composition having a fresh scent forever. Therefore, it is particularly suitable when a fragrance is added.
Further, it is possible to exhibit excellent bleaching performance even after long-term storage. Next, the present invention will be described with reference to examples.

[0012]

【Example】

Example 1 A bleach activator granule was produced by the following methods (1) and (2). (1) Bleach activator (1.5 kg) and organic binder (0.5 kg) were added to Hosokawa Micron Co., Ltd. Extruded Ohmics heated to 60 to 80 ° C. by circulating warm water, and an intermediate orifice of 6 mm and 3 mm, A noodle-like granulated product having a length of 5 to 20 mm was obtained through a discharge orifice 1 mm (granulated products 1 and 3) (2) Kneader by circulating hot water in the jacket of S-2KRC kneader manufactured by Kurimoto Iron Works Co., Ltd. The body is 60-80
Warmed to a temperature of ° C. Next, 1.5 kg of bleach activator and 0.5 kg of organic binder were added to the kneader and kneaded. The resulting kneaded product was extruded using a pelleter double made by Fuji Paudal Co., Ltd. equipped with a die having a hole diameter of 1 mmφ to obtain a bleach activator granule in the form of a noodle having a length of 2 to 3 mm (granulation. Material 2) These noodle-shaped granulated materials are crushed to have an average particle size of 600.
A bleach activator granule of μm was prepared and incorporated into the bleach composition. The bleach activators used are shown in Table-1, and the types of organic binders are shown in Table-2.

[0013]

[Table 1] Table 1 Bleaching activator Bleach Activator No. R X AC ₉ H ₁₉ COOH BC ₉ H ₁₉ SO ₃ Na CC ₇ H ₁₅ COOH The bleach activator in the table is represented by the following formula (III).

[0014]

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[0015]

[Table 2] Table-2

The binders in the table are as follows. Organic binder No. 1: PEG6000 Organic binder No. 2: Polyoxyethylene lauryl ether (Ethylene oxide average addition mole number 50) Bleaching agent compositions of various compositions shown in Table 3 were prepared by powder mixing, and The bleaching power was evaluated by the method. (1) Preparation of Spinach Dirty Cloth 500 g of spinach is mixed with 250 mL of water, ground with a mixer, and filtered with gauze. 100% Nisshinbo cotton in this liquid
No. 100 g was immersed for 5 minutes, dried at 100 ° C., rinsed with water for 10 minutes, and provided as a spinach soil cloth. (2) Evaluation of bleaching power 3 ° DH hard water, water volume 2L, bleaching agent concentration 0.5%, temperature 25
Ten pieces of spinach soil cloth (5 × 5 cm) were put under the condition of ° C. and soaked for 30 minutes. Then 3 ° DH, 25 ° C
It was rinsed with water for 3 minutes and dehydrated for 1 minute.
After air-drying, the reflectance of the object to be washed was measured by Σ90 manufactured by Nippon Denshoku Co., Ltd., and the bleaching rate was calculated by the following formula (a). The bleach used after storage in the following aroma stability evaluation was used.

[0017]

[Equation 1] The aroma stability was evaluated by the following method. Bleach 5
After putting 0 g in a glass bottle (PS-11), sealing with a cap, the mixture was left to stand for 1 month in a thermostatic chamber at 50 ° C., and the aroma stability was evaluated according to the following criteria. Evaluation criteria ○: No deterioration is observed. X: Deterioration is recognized. The results are shown in Table-3.

[0018]

[Table 3] Table-3 Composition 1 2 3 4 5 6 7 * 8 * 9 * 10 * 11 12 * 13 * Sodium percarbonate (%) 30 30 30 40 40 40 40 30 40 40 30 30 40 Bleach used A A A B A A B-C D-C A B Granulator of activator (%) 5 5 5 5 5 5 0 5 5 5 0 5 5 5 Sodium carbonate (%) 60 60 60 50 50 50 50 60 50 50 60 60 50 Other additives Balance Protease Savinase 6.0T (%) − − − − − − − 2 2 2 2 2 2 2 Bleach resistant protease Durazyme 8.0T (%) 2 − 2 2 2 2 2 2 − − − 2 − − Maxapem (%) − 2 − − − − − − − − − − − Spinach bleaching power (%) 85 82 83 88 86 85 30 86 38 28 86 84 84 Aroma stability ○ ○ ○ ○ ○ ○ ○ × × × ○ × ×

Bleach activator D is TAED (tetraacetylethylenediamine). Sabinase 6.0T: manufactured by Novo Industry Co., Ltd. Other additives are mirabilite, fragrances, and pigments. 7 * ~ 10
* And 12 * to 13 * are comparative examples.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location C11D 7:26 7:34 3: 386)

Claims (1)

[Claims] 1. An (a) oxygen-based bleaching base compound that generates hydrogen peroxide in water, (b) a bleaching activator represented by the general formula (I) or (II), and (c) bleaching resistance. A bleaching agent composition comprising a protease. Embedded image (In the formula, R ¹ is an alkyl group or alkenyl group having 9 to 18 carbon atoms, R ² is an alkyl group or alkenyl group having 7 to 18 carbon atoms, and M is a salt-forming cation or hydrogen.)