JPH04331299A - bleach composition - Google Patents

Abstract

PURPOSE:To improve bleaching power against firmly adherent stains by mixing a percarbonate or perborate, an anionic and/or nonionic surfactant, a specific compound, a hydroxyacrylic acid polymer and a polyacrylic acid. CONSTITUTION:The title composition comprises 30-95wt.% percarbonate or perborate (A), 0.5-5wt.% anionic surfactant and/or nonionic surfactant, 0.5-30wt.% tetraacethyethylenediamine and/or glucose pentaacetate, at least one hydroxyacrylic acid polymer (D) with an average molecular weight of 1,000-1,000,000 selected from poly-alpha-hydroxyacrylic acid (salt) and polylactone, a polyacrylic acid (E) with a molecular weight of 1,000-200,000, the components D and E amounting to 0.1-5wt.% in total, the weight ratio D/E being 1/50 to 4/1.

Description

[Detailed description of the invention]

0001

FIELD OF THE INVENTION This invention relates to bleach compositions.

0002

BACKGROUND OF THE INVENTION Currently, many oxygen bleaches containing sodium percarbonate as a main component are on the market. These oxygen bleaches can be used on colored and patterned fabrics and have a better odor than chlorine bleach, making them quite popular as clothing bleaches. However, it cannot be said that it has sufficient bleaching power, especially for hard stains such as those in the kitchen.

0003

[Means for Solving the Problems] Therefore, the present inventors conducted intensive research to obtain a bleach composition with even better bleaching power. Ethylenediamine (hereinafter referred to as TA
ED) and/or glucose pentaacetate (hereinafter abbreviated as GPAC), a hydroxyacrylic acid polymer, and a polyacrylate with a specific molecular weight in a specific ratio, resulting in good bleaching power. The present inventors have discovered that a bleaching agent composition with excellent properties can be obtained, and have completed the present invention.

That is, the present invention provides the following (a) to (e)
Component (a) Percarbonate or perborate

30-95% by weight (b) anionic surfactant and/or
or nonionic surfactant 0.5-5% by weight (c) TAED and/or GPAC

0.5 to 30% by weight (d) At least one hydroxyacrylic acid polymer selected from poly-α-hydroxyacrylic acid, a salt thereof, or a polylactone thereof (
e) Contains polyacrylic acid with a molecular weight of 1,000 to 200,000, the total of components (d) and (e) is 0.1 to 5% by weight, and the weight ratio of (d)/(e) is 1.
The present invention provides a bleaching agent composition having a ratio of 1/50 to 4/1.

Examples of the percarbonate or perborate (a) serving as a bleaching base include sodium percarbonate, sodium perborate monohydrate, sodium perborate tetrahydrate, etc., and the blending ratio thereof is determined depending on the composition. 30-95% by weight, preferably 60-80%
Weight%.

The anionic surfactant (b) used in the present invention includes alkylbenzene sulfonates having an average carbon number of 10 to 18, alkyl sulfate salts having an average carbon number of 10 to 22, and olefins having an average chain length of 12 to 18. Examples include sulfonic acid salts, α-sulfo fatty acid ester salts with an average chain length of 10 to 18, and higher fatty acid salts with an average chain length of 10 to 22.

[0007] In addition, as the nonionic surfactant which is the other component (b), polyoxyethylene having an alkyl group or alkenyl group having an average carbon number of 10 to 18 and to which 1 to 20 moles of ethylene oxide is added is used. Examples include alkyl ether or polyoxyethylene alkenyl ether, polyoxyethylene alkylphenyl ether having an alkyl group having an average carbon number of 6 to 12, and to which 1 to 20 moles of ethylene oxide are added. Usually, these nonionic surfactants have an HLB of 8 to 18, preferably 8.
．． 5 to 13 are used.

[0008] The above surfactant is present in the composition in an amount of 0.5 to 5
% by weight is added.

(c) TAED and/or GPAC, which are bleach activators, have a melting point of 40 to 80°C in order to improve caking resistance and storage stability in the presence of a bleaching base.
Preferably, it is used as a granulate using polyoxyethylene alkyl ether or carboxymethyl cellulose as binder. Among them, polyoxyethylene (average number of added moles 35 to 100) alkyl (C8 to C2
2) Granules using ether as a binder have good solubility and are preferred. Granulation of TAED and/or GPAC is
40 to 98 parts by weight of TAED and/or GPAC, 2 to 15 parts by weight of a binder, and other granulation aids as necessary are supplied to a stirring rotary granulator or an extrusion granulator. be exposed. The particle size of the granulated material is 125 μ to 3 mm, preferably
It is preferable to adjust the particle size so that 90% or more of the particles have a size of 350 μm to 1.5 mm. The blending ratio of TAED and/or GPAC in the composition is 0.5 to 30% by weight, preferably 1 to 30% by weight.
It is 20% by weight.

At least one hydroxyacrylic acid polymer selected from poly-α-hydroxyacrylic acid, a salt thereof, or a polylactone thereof, which is the component (d) used in the present invention, is a compound that is water-soluble and exhibits a chelating action. There is an average molecular weight of 1000 to 10 for use in the present invention.
00,000, preferably 2,000 to 800,000. Moreover, as the salt, sodium salt is preferable.

(e) Component polyacrylate is:
For example, sodium salt is mentioned, and the molecular weight is 1000 to 2.
00,000, preferably 2,000 to 100,000, more preferably 4,000 to 20,000.

[0012] The component (d) and the component (e) are (d)+
(e) is 0.1 to 5% by weight, preferably 0.5 to 5% by weight
4.5% by weight, (d)/(e) weight ratio is 1/50
-4/1, preferably 1/50 - 3/1.

Among the above components, (a) component, (b)
It is preferable that the components (d) and (e) are granulated (mixed, heated, and dried) to form particles having a particle size of 125 to 1000 μm.

[0014] Furthermore, although a proteolytic enzyme can be blended into the bleach composition of the present invention, the stability of the enzyme is greatly improved compared to the conventional system containing only sodium percarbonate and a nonionic surfactant. In particular, there are differences in storage stability under high humidity. This improvement in stability is of great significance because the bleach composition is stored in a humid place due to its usage. The protease used in the present invention is preferably a granulated one, such as alkaline protease.

Specific examples and manufacturers of commercially available enzyme products include "Alcalase", "Esperase", "Sabinase" (Novo Industrie, Copenhagen, Denmark), "Maxatase-P" (Gist, Defurt, Netherlands). , Procades, n.v.), "Protease B-400", "Protease B-4000",
“Protease Ap” and “Protease Ap 100
” (A.G., Schweizelissche, Ferment, Basel, Switzerland), “GRD Protease” (Company, Inc., Monsanto, St. Louis, Missouri, USA), “API-21” (Showa Denko), etc. . The amount of proteolytic enzyme blended is preferably 0.05 to 5% by weight.

In addition to the above-mentioned components, the bleach composition of the present invention may optionally contain known bleach components, if necessary. Namely, inorganic/organic builder components such as sodium tripolyphosphate, sodium carbonate, sodium pyrophosphate, sodium sulfate, sodium borate, sodium bicarbonate, sodium silicate, sodium nitrilotriacetate, sodium ethylenediaminetetraacetate, carboxymethylcellulose, polyvinyl alcohol, Examples include polymeric substances such as polyethylene glycol, fragrances, pigments, and fluorescent dyes. Moreover, the bleach composition of the present invention can also be used in combination with a cleaning composition.

[0017]

[Examples] The present invention will be explained below with reference to Examples, but the present invention is not limited to these Examples.

Example 1 The bleach shown in Table 1 was dissolved in water at 40°C to a concentration of 0.5% by weight, and the tea leaves were soaked in hot water for 1 hour. After washing with water, dry and evaluate according to the following evaluation points. Almost no tea stain remains...○ Some tea stain remains...△ Almost no tea stain remains...x These results are shown in Table 1. The composition in Table 1 is made by heating and mixing 92 parts by weight of TAED powder with 8 parts by weight of polyoxyethylene (average added mole number 55) stearyl ether, and extrusion granulation to obtain a granulated product with a particle size of 400 to 700μ. Then, a surfactant, sodium polyacrylate (average molecular weight 8,000) and sodium poly-α-hydroxyacrylate (average molecular weight 100,000) were further added and mixed to this granulated product, and the mixture was heated and dried to obtain a particle size. Sodium carbonate (particle size 250-500μ) is added to the granules in the range of 250-500μ.
It is obtained by mixing.

[0019]

[Table 1]

Claims (1)

[Claims] [Claim 1] The following (a) to (e) component (a)
percarbonate or perborate
30-95% by weight (b) Anionic surfactant and/or nonionic surfactant 0.5-5% by weight (c) Tetraacetylethylenediamine and/or glucose pentaacetate

0.5-30% by weight (d)
At least one hydroxyacrylic acid polymer (e) selected from poly-α-hydroxyacrylic acid, a salt thereof, or a polylactone thereof, with a molecular weight of 1000 to 200
000 polyacrylic acid, the total of component (d) and component (e) is 0.1 to 5% by weight, (d)
/(e) A bleach composition having a weight ratio in the range of 1/50 to 4/1.