JPH05171195A - Bleaching composition - Google Patents

Abstract

PURPOSE:To obtain a bleaching composition, containing hydrogen peroxide, etc., and a specific nonionic surfactant, excellent in detergency and bleaching properties for foulings in collars, sleeves, etc., and useful for clothes, etc. CONSTITUTION:The objective bleaching composition containing (A) hydrogen peroxide or a peroxide such as a percarbonate capable of generating the hydrogen peroxide in an aqueous solution and (B) a nonionic surfactant, expressed by the formula [R1 is 4-22C alkyl or alkenyl; R2 is 2-4C alkylene; R3 is 1-5C alkyl; (n) is 5-30], reactive with the hydrogen peroxide and generating an organic peracid. Furthermore, the blending ratio [(A)/(B)] of the components (A) to (B) is preferably (90/10) to (50/50).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a bleaching composition such as a bleaching agent and a bleaching detergent.

[0002]

2. Description of the Related Art Currently, bleaching agents and bleaching detergents for clothing are
Sodium percarbonate and sodium perborate are mainly used as a bleaching base material. However, since sufficient bleaching performance cannot be obtained with these base materials alone, organic peracid precursors such as tetraacetylethylenediamine (TAED) have come to be used together as a bleach activator. Further, in recent years, a bleach activator having higher biodegradability has been demanded in consideration of safety and environment, and a sugar such as pentaacetyl glucose described in JP-B-52-6867 is used as a raw material. A bleach activator was found. However, this base material is T
Since it produces an organic peracid that has the same high bleaching performance as AED, it has a great bleaching effect on dye stains such as stains,
Since the alkyl carbon is short and the glucose produced by the reaction has no surface activity, the cleaning effect on general stains such as collar and sleeve stains is small.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bleaching composition having a higher bleaching power and also a cleaning performance.

[0004]

The bleaching composition of the present invention is characterized by containing the following components (a) and (b). (A) Hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution. (B) Chemical formula 2 that reacts with hydrogen peroxide to generate an organic peracid

[0005]

[Chemical 2] Nonionic surfactant represented by.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION As the peroxide of the component (a), hydrogen peroxide, percarbonate, perborate, persulfate and the like are used, and the salt includes sodium salt, potassium salt and the like.

The ester type nonionic surfactant as the component (b) is an alkyl ether of an alkylene oxide adduct of a fatty acid, which is also obtained by a two-step method in which an alkylene oxide is added to a fatty acid by a conventional method and then an alkyl ether is formed. However, for example, from magnesium oxide to which one or more metal ions selected from trivalent aluminum ions, gallium ions, indium ions, thorium ions, cobalt ions, scandium ions, lanthanum ions and divalent manganese ions are added. It can also be produced by a one-step method of reacting a fatty acid alkyl ester with an alkylene oxide in the presence of a catalyst (see Japanese Patent Application No. 3-63904).

In the bleaching composition of the present invention, (a)
It is preferable to mix the peroxide and the nonionic surfactant (b) in a molar ratio of (a) / (b) = 99.9 / 0.1 to 20/80, and more preferably 90/10.
~ 50/50. A high bleaching detergency can be obtained by using both in this range. The nonionic surfactant of the component (b) of the present invention rapidly reacts with hydrogen peroxide in an aqueous solution to produce an organic peracid, and this peracid is decomposed to generate nascent oxygen. Supplied for high bleaching power. In addition, since the nonionic surfactant as the component (b) and the alcohol polyalkoxylate produced by the reaction show cleaning performance, a cleaning effect against stains or general stains such as collars and sleeves can be obtained together.

The bleaching composition of the present invention is blended with an inorganic salt such as carbonate, zeolite, white carbon, sulfate, etc., an enzyme, etc., if necessary, or is generally added to a detergent. The bleaching detergent composition can be used in various forms such as adding a known component such as a surfactant, an inorganic salt, a chelate builder, an anti-soil redeposition agent, an enzyme, a fluorescent agent, and a fragrance.

Examples of the surfactant include alkylbenzene sulfonate, alpha olefin sulfonate, alkyl sulfate, α-sulfo fatty acid lower alkyl ester salt, higher fatty acid salt, alkane sulfone salt, polyoxyethylene alkyl ether. Anionic surfactants such as sulfate salts, polyoxyethylene alkyl and alkenyl ethers and fatty acid esters, sugar fatty acid esters, nonionic surfactants such as alkylamine oxides, and cationic surfactants and alkyls such as tetraalkylammonium chloride. There are amphoteric surfactants such as sulfobetaine.

The inorganic salts include carbonates, sulfates and silicates, and the chelate builders include phosphates, polyacrylates, polyvalent carboxylates and zeolites.
Anti-recontamination agents include polyvinyl alcohol, carboxymethyl cellulose and the like, and enzymes include protease, cellulase, amylase, alkaline lipase and the like.

[0012]

According to the present invention, by using a peroxide and a specific nonionic surfactant in combination to form a bleaching composition, a more excellent bleaching effect can be obtained, and at the same time, a conventional bleaching effect can be obtained. It is also possible to obtain a cleaning effect for general stains such as collar and sleeve stains, which was not shown when the bleach activator was used.

[0013]

[Examples] The evaluation methods adopted in the examples are shown below. (1) Preparation of black tea stain 15 g of twinning black tea is added to 3 liters of boiled water, boiled for 5 minutes, and then leaves are filtered with gauze. After adding 100 g of Nisshinbo cotton 100 to this filtrate and boiling for 30 minutes,
What was rapidly cooled to room temperature and dehydrated and dried was applied to a black tea soil cloth.

(2) Preparation of Washed Knitted Cloth A cotton knitted cloth was cut into 5 × 5 cm and used.

(3) Preparation of artificial dirt Clay containing kaolinite and vermiculite, which are crystalline minerals, as main components was dried at 200 ° C. for 30 hours and used as inorganic dirt.

About 4 g of 3.5 g gelatin in 950 cc of water
After being dissolved at 0 ° C., 0.25 g of carbon black was dispersed in water with a powerful emulsifying and dispersing machine, Polytron (manufactured by KINEMATICA, Switzerland). Next, inorganic dirt 14.
Add 9 g and emulsify with Polytron, then add organic dirt 3
1.35 g was added and emulsion-dispersed with Polytron to make a stable dirt bath. A predetermined 10 cm × 20 cm clean cloth (cotton cloth No. 60 designated by Japan Oil Chemistry Association) was dipped in this dirt bath, and then water was squeezed with two rubber rolls to make the amount of dirt adhered uniform. After drying this dirty cloth for 30 minutes at 105 ° C., both sides of the dirty cloth were rubbed 25 times on each side. This was cut into 5 cm × 5 cm, and the one having a reflectance within the range of 42 ± 2% was used as a soiled cloth. The soil composition of the artificial soil cloth thus obtained is shown in Table 1.

[0017]

[Table 1] Soil composition (wt% ) Organic soil: Oleic acid 28.3 Triolein 15.6 Cholesterol oleate 12.2 Liquid paraffin 2.5 Squalene 2.5 Cholesterol 1.6 Oily soil total 62.7 Gelatin 7.0 Inorganic soil 29.8 Carbon black (designated by Japan Oil and Chemical Society) 0.5

(4) Preparation of sebum cloth A cloth (cotton knitted cloth 5 × 5 cm) was coated with 60 mg of organic dirt shown in Table 1 per sheet to give a sebum cloth.

(5) Evaluation method The test composition (bleaching composition or bleaching detergent composition) was dissolved in 150 ml of ion-exchanged water at 25 ° C. to a concentration of 0.083%, and CaO in this solution was adjusted to 0. .0054
Add CaCl ₂ so that it becomes%. Add 5 pieces each of black tea cloth and artificial dirt cloth (5 x 5 cm),
Immersion washing is performed at 25 ° C. for 1 hour. After that, add 3 pieces of sebum cloth and adjust the bath ratio to 30 times using the wash knit cloth,
After washing for 10 minutes at 120 rpm using a tergotometer, it is washed with water and dried. The reflectance of the object to be washed was measured, and the bleaching rate was calculated from the equation 1 and the cleaning rate was obtained from the equation 2.

[0020]

[Equation 1]

[0021]

[Equation 2]

Example 1 As the component (b) of the present invention, four kinds of ester type nonionic surfactants shown in Table 2 below were produced by the one-step method described above.

[0023]

[Table 2]

After spraying these nonionic surfactants on sodium percarbonate, white carbon was coated on the sample No. 3 shown in Table 3. The bleaching agent compositions 1 to 4 were prepared and the black tea bleaching rate was measured. The results are shown in the same table. In addition, the evaluation results when the conventional bleach activator was used are also shown in the same table.

[0025]

[Table 3] Example ratio Comparative sample No. 1 2 3 4 5 6 7 Composition (wt%): Sodium percarbonate 89 89 89 89 90 90 100 Nonion A 10 − − − − − − Nonion B − 10 − − − − − Nonion C − − 10 − − − − Nonion D − − − 10 − − − White carbon 1 1 1 1 − − − TAED * ¹ − − − − 10 − − PAG * ² − − − − − 10 − Evaluation: Black tea Bleaching rate (%) 45 42 43 42 40 40 25 * 1) Tetraacetylethylenediamine (granulated product) * 2) Pentaacetyl glucose (granulated product)

Example 2 Sodium Percarbonate, Nonionics A to D, TAED, PAG
A granular detergent containing each component except was prepared by a conventional method. On the other hand, bleached particles were prepared by spraying each nonion onto sodium percarbonate and coating 2% of zeolite. These bleached particles or sodium percarbonate and TAED or PAG were mixed in powder with a granular detergent, and sample N shown in Table 4 was used.
o. 8 to 14 bleaching detergent compositions were prepared, and the bleaching rate of black tea and the cleaning rate of artificial dirt were measured, and the results are shown in the same table.

[0027]

[Table 4] Example ratio Comparative sample No. 8 9 10 11 12 13 14 Composition (wt%): LAS-Na * ³ 15 15 15 15 15 15 15 AOS-Na * ⁴ 15 15 15 15 15 15 15 Carbonic acid-Na 20 20 20 20 20 20 20 Zeolite 4A 20 20 20 20 20 20 20 Percarbonate-Na 10 10 10 10 10 10 10 Nonion A 5 − − − − − − Nonion B − 5 − − − − − Nonion C − − 5 − − − − Nonio D − − − 5 − − − TAED * ³ − − − − 5 − − PAG * ⁴ − − − − − 5 − Sulfuric acid-Na balance Water content 7 7 7 7 7 7 7 Evaluation: Black tea bleaching rate (%) 42 41 41 40 42 35 23 artificial soiled washing (%) 92 91 90 91 85 85 84 * 1) linear alkyl (C ₁₄ -C ₁₆₎ sodium benzenesulfonate * 2) alpha-olefin ( C ₁₄ -C ₁₆₎ sulfonate, sodium * 3) tetraacetylethylenediamine * 4) pentaacetylglucose

Claims (1)

[Claims] 1. (a) hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution, and (b) a chemical reaction that reacts with hydrogen peroxide to generate an organic peracid. A bleaching composition comprising a nonionic surfactant represented by: