JPH093493A - Detergent composition - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a detergent composition having excellent detergency, which can be economically synthesized at low cost, has high water solubility, and contains a phosphorus-free builder excellent in chelating performance. [Constitution] A detergent composition containing a chelate compound (I). Embedded image (In the formula, R ¹ and R ² are a hydrogen atom, —COOM, —SO ₃ M or —CH ₂
N (CH ₂ COOM) ₂ and M represent a hydrogen atom, Na, K, ammonium or an alkanol ammonium having 2 to 9 total carbon atoms. )

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a detergent composition. More specifically, it relates to a detergent composition having excellent detergency, which contains a phosphorus-free chelate compound having excellent chelating performance.

[0002]

2. Description of the Related Art Builders used as detergents have a chelating ability. Therefore, by chelating calcium ions and magnesium ions in water, the washing effect of surfactants and soaps can be improved. Can be improved. Conventionally, sodium tripolyphosphate has been mainly used as a builder for detergents.
Sodium tripolyphosphate has a very good performance as a builder for detergents, such as chelating performance.However, since it contains phosphorus, the wastewater after washing containing the same is discharged as it is, resulting in eutrophication of rivers and lakes. Cause. Therefore, sodium tripolyphosphate is rarely used at present.

In place of such sodium tripolyphosphate, various organic carboxylic acid type builders such as inorganic ion exchange agents such as xetrite and nitrilotriacetic acid have been used. However, zeolite is inferior to sodium tripolyphosphate in performance as a builder for detergents and is poorly soluble in water, making it unsuitable for the formulation of liquid detergents, and even when used as a powder detergent, it is not suitable for washing machines. There is a drawback of sticking to. Further, the organic carboxylic acid builders currently used are not yet sufficiently satisfactory in chelating performance, detergency enhancing effect, economical efficiency and the like.

Accordingly, an object of the present invention is to provide a detergent composition having excellent detergency which contains a phosphorus-free builder which is economically inexpensive to synthesize, has high water solubility and is excellent in chelating performance. It is in.

[0005]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that a detergent composition containing a specific chelate compound can solve the above-mentioned problems, and have completed the present invention. That is, the present invention provides a detergent composition containing a chelate compound represented by the following general formula (I).

[0006]

Embedded image

(In the formula, R ¹ and R ^{2 are the} same or different and are a hydrogen atom, -COOM, -SO ₃ M
Alternatively, -CH ₂ N (CH ₂ COOM) ₂ is shown. M: a hydrogen atom, Na, K, ammonium, or an alkanol ammonium having a total carbon number of 2 to 9 such as triethanol ammonium, diethanol ammonium, monoethanol ammonium, and triisopropanol ammonium. Hereinafter, the present invention will be described in detail.

The chelate compound represented by the general formula (I) used in the present invention has excellent chelating ability and has extremely high water solubility, so that there is no fear of sticking to a washing machine, and a liquid cleaning agent or powder cleaning agent is used. It can be suitably used as a builder for detergents regardless of their use. Examples of the chelate compound represented by the general formula (I) include compounds represented by the following formula (I-1).
To a compound represented by (I-5).
One kind or a mixture of two or more kinds can be used, and the compound represented by the formula (I-1) is particularly preferable.

[0009]

Embedded image

(In the formula, M represents the above meaning.) The chelate compound represented by the general formula (I) can be produced by a conventionally known method.
1,6-di- [N, N-bis (carboxymethyl) represented by 1)
Aminomethyl] phenol or a salt thereof can be obtained by reacting phenol and iminodiacetic acid in the presence of an alkali in water with dropwise addition of formalin.

The chelate compound represented by the general formula (I) in the present invention is added to the detergent composition in an appropriate amount within the range where the desired effect can be obtained. The amount is usually 0.5 to 50% by weight, preferably 1 to 30% by weight. If the compounding amount of the chelate compound represented by the general formula (I) is less than 0.5% by weight, the effect of the builder cannot be obtained and the cleaning performance tends to be insufficient. The amount of other ingredients is less,
It tends to be difficult to obtain sufficient cleaning performance.

The detergent composition of the present invention contains the chelate compound represented by the general formula (I) as a builder, and further contains the following surfactant and, if necessary, various components shown below. However, these are not particularly limited and may be blended according to the purpose.

(1) Surfactant All the surfactants usually added for detergents can be used in the present invention. For example, alkylbenzene sulfonate,
Anionic surfactants such as alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkane sulfonates, α-sulfo fatty acid salts or esters, higher fatty acid salts, polyoxyalkylene alkyl or alkenyl ethers , Polyoxyethylene alkylphenyl ethers, higher fatty acid alkanolamides or their alkylene oxide adducts, nonionic surfactants such as alkylamine oxides and alkyl glycosides, amino acid type and betaine type carboxylate type amphoteric surfactants, sulfo Examples thereof include sulfonate type amphoteric surfactants such as betaine, and cationic surfactants typified by quaternary ammonium salts. These surfactants can be used alone or as a mixture of two or more. These surfactants are generally added in an amount of 1 to 99% by weight, preferably 5 to 90% by weight, based on the total detergent composition. If it is less than 1% by weight, the cleaning performance tends to be insufficient, and if it exceeds 99% by weight, the powder properties or the stability of the solution tend to be deteriorated.

(2) Builder As a builder component, in addition to the chelate compound represented by the above general formula (I), for example, one or more of various alkali metal salts of the following are used in the present invention. You can That is, condensed polyphosphates such as tripolyphosphate, pyrophosphate, metaphosphate, nitrilotriacetate, ethylenediaminetetraacetate, aminopolyacetate such as diethylenetriaminepentaacetate, citrate, malate, glycolic acid Oxycarboxylic acid salts such as salts, polyacrylic acid and salts thereof, acrylic acid-maleic anhydride copolymers and salts thereof, and polyelectrolytes such as polyglyoxylic acid and salts thereof can be used in the present invention. Furthermore, as a water-insoluble substance,
If necessary, talc, finely divided silica, clay, silicate, and crystalline or amorphous zeolite having divalent metal ion exchange ability can be added to the composition of the present invention.

(3) Alkaline Agent or Inorganic Electrolyte As the alkaline agent or inorganic electrolyte, one or more of various alkali metal salts such as silicates, carbonates and sulfates can be used in the present invention. it can. Also,
As the organic alkaline agent, alkanolamines represented by triethanolamine, diethanolamine, monoethanolamine, triisopropanolamine and the like can also be used in the present invention.

(4) Anti-Staining Agent As an anti-staining agent, one or more of polyvinyl alcohol, polyvinylpyrrolidone, carboxymethyl cellulose and the like can be used in the present invention.

(5) Bleach, fluorescent dye, enzyme, etc. As a bleaching agent, sodium percarbonate, sodium perborate,
Commercially available fluorescent dyes such as sodium sulfate / sodium chloride hydrogen peroxide adducts, whitening agents, fragrances, enzymes such as protease, amylase, lipase, cellulase, bluing agents, bleach activators, etc. are also required. Accordingly, it can be incorporated into the composition of the present invention. In addition, as a solubilizer used in the liquid detergent, lower alcohols such as ethanol and isopropanol, polyhydric alcohols such as ethylene glycol, propylene glycol, glycerin and sorbitol, p-toluenesulfonic acid salt, m-xylenesulfonic acid salt and the like Can also be used.

The detergent composition of the present invention may be in a liquid form or a powder form, and it is generally known in the art, for example, a spray drying method, a spray mix method, a crushing granulation method, or a method of impregnating beads containing an inorganic builder. , A high-density granular detergent, a tablet-type, flake-shaped, or rod-shaped detergent, a batch-type mixing method, a continuous-type mixing method, or the like.

[0019]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. In the examples,% is based on weight unless otherwise specified.

Examples 1 to 5 and Comparative Example 1 A powdery detergent composition was produced by crushing and granulating particles obtained by spray drying a slurry having the composition shown in Table 1 with a high speed mixer. The cleaning performance of the obtained cleaning composition on artificially stained cloth was evaluated by the following method. The results are shown in Table 1.

<Evaluation method of cleaning performance> (1) Preparation of sebum stain contaminated cloth (artificial contaminated cloth) Model sebum stain 2 consisting of 10 cm × 10 cm cotton cloth with the following composition
g was evenly applied to prepare a sebum soiled cloth.・ Model sebum dirt composition Cottonseed oil 60% Cholesterol 10% Oleic acid 10% Palmitic acid 10% Liquid and solid paraffin 10% (2) Preparation of mud soiled cloth (artificial soiled cloth) After drying for 4 hours at 150 ° C, a 150-mesh (100 µm) pass is ground at 120 ° C ± 5 ° C.
After drying for 2 hours, disperse about 150 g in 1 liter of perclene, contact a # 2023 cloth with this liquid, brush, remove the dispersion, and remove excess adhered dirt.
A mud-dirt-contaminated cloth was created.

(3) Washing conditions and evaluation method In 1 liter of the cleaning agent aqueous solution for evaluation, 10 cm prepared as described above was used.
Five pieces of cotton sebum stained cloth or mud stained cloth of × 10 cm were put and washed at 100 rpm with a tergotometer. The washing conditions are as follows.・ Washing conditions Washing time 10 minutes Washing agent concentration 0.083% Water hardness 4 ° DH Water temperature 20 ° C Rinsing Tap water 5 minutes Washing power is the self-recording color at 460nm of the original cloth before and after cleaning. The cleaning rate (%) was determined by the following equation, and the average of the measured values of the five sheets was shown as the cleaning power.

[0023]

[Equation 1]

[0024]

[Table 1]

Note) * 1 LAS: straight chain alkylbenzene sulfonate sodium (C
_{12 ~C 13)} * 2 AS: alkyl sulfate sodium _{(C 14 ~C 15) * 3} AES: polyoxyethylene alkyl sulfate sodium (C
₁₄ -C _15, ethylene oxide average addition mol number 1.5) * 4 nonionic surface active agents: polyoxyethylene alkyl ether (C ₁₂ ~C _13, ethylene oxide average addition molar number of 10)

[0026]

Embedded image

Examples 6 to 8 and Comparative Examples 2 to 3 Liquid detergent compositions having the compositions shown in Table 2 were produced by batch compounding using a propeller shaft agitator. With respect to the obtained cleaning composition, the cleaning performance against the artificially contaminated cloth was evaluated in the same manner as in Example 1, except that the cleaning concentration alone was 0.133% among the cleaning conditions. Table 2 shows the results.

[0028]

[Table 2]

Note) * 1: The same compounds as in Table 1 were used as the compounds A, B and D.

Claims (3)

[Claims] 1. A cleaning composition comprising a chelate compound represented by the following general formula (I). Embedded image (In the formula, R ¹ and R ^{2 are the} same or different and are a hydrogen atom, -COOM, -SO ₃ M
Alternatively, -CH ₂ N (CH ₂ COOM) ₂ is shown. M: hydrogen atom, Na, K, ammonium or total carbon number 2
9 shows the alkanol ammonium of 9. ) 2. The chelate compound represented by the general formula (I) is one or more compounds selected from compounds represented by the following formulas (I-1) to (I-5). Cleaning composition. Embedded image (In the formula, M represents the above meaning.) 3. The detergent composition according to claim 1, wherein the content of the chelate compound represented by the general formula (I) in the detergent composition is 0.5 to 50% by weight.