JPH069999A - Nonionic powdery detergent composition - Google Patents

Abstract

PURPOSE:To obtain a nonionic powdery detergent which causes little foaming and is excellent in rinsing properties by mixing a polyoxyethylene alkyl ether nonionic surfactant, an aluminosilicate, and a soap. CONSTITUTION:The composition contains: 12-35wt.% polyoxyethylene alkyl ether nonionic surfactant which has a melting point of 40 deg.C or lower and an HLB of 9.0 to 16.0 and contains 40-85wt.% 12-13C alkyl chains, 5-50wt.% 14-15C alkyl chains and 3-40wt.% 16-18C alkyl chains, and in which the average number of ethylene oxide molecules added is 6 to 10; 10-60wt.% aluminosilicate; and a soap obtained by neutralizing 60-100mol% of an 8-20C saturated or unsaturated fatty acid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder detergent composition containing a nonionic surfactant as a main base, and more particularly to a powder detergent composition having less foaming and excellent defoaming property during washing. .

[0002]

2. Description of the Related Art Nonionic surfactants have excellent hard water resistance, and also have excellent detergency against oil stains and stain dispersibility, and polyoxyethylene alkyl ethers are particularly biodegradable. Since it has characteristics such as goodness, it has been widely used as a main base for detergents. Usually, the cleaning agent based on a nonionic surfactant is mainly in a liquid form, but a large amount of builders, etc., which have absorbed the nonionic surfactant, or those with washing temperatures such as those in Europe. In high areas, detergents in powder form using high-melting point nonionic surfactants are also commercially available.

Further, JP-A-50-119813 discloses a premixture 30 to 100 in which a nonionic surfactant is finely mixed with zeolite or a mixture of zeolite and an inorganic peroxide which produces hydrogen peroxide in water. %, And a powder detergent containing 0 to 70% of a spray-dried detergent containing a fatty acid is disclosed. JP-A-61-89300 discloses a mixture of a water-soluble powder and a silica powder. , Spray nonionic surfactant,
Then, a zeolite powder is added to prepare a granulated product, and a granular detergent containing the granulated product and a granular detergent containing an anionic surfactant is disclosed.

However, the above-mentioned technique is mainly based on research on a cleaning additive containing a nonionic surfactant, which is post-blended with a spray-dried detergent containing an anionic surfactant as a main cleaning base, and is also known. In Japanese Patent Publication No. 51-41708,
A powder detergent composition containing a porous aggregate of a synthetic amorphous silica derivative and a nonionic surfactant has been disclosed, but no study has been made on the improvement of low foaming property and rinsing property.

Generally, a detergent containing a polyoxyethylene alkyl ether type nonionic surfactant has a poor rinsing property and has a problem that it remains on clothes or the like. It is known to add soaps, silicone derivatives, and other rinsing aids to improve low-foaming properties and rinsing properties, but cleaning using a polyoxyethylene alkyl ether type nonionic surfactant as a main base. In the case of an agent, not only a sufficient effect cannot be obtained, but it sometimes causes a decrease in detergency.

[0006]

Under such circumstances, the inventors of the present invention have conducted extensive studies on powder detergents containing a nonionic surfactant as a main detergent base, and as a result, have found that the number of carbon atoms in a specific alkyl chain is large. By using a polyoxyethylene alkyl ether type nonionic surfactant having the above, an aluminosilicate and a specific soap, it was found that there is little foaming and the rinse property is excellent, and the present invention has been completed.

That is, the present invention provides the following components (a), (b) and
The present invention provides a nonionic powder detergent composition containing (c). (a) Polyoxyethylene alkyl ether type nonionic interface having a melting point of 40 ° C. or lower, an HLB of 9.0 to 16.0, an alkyl chain having the following carbon number distribution, and an ethylene oxide average addition mole number of 6 to 10: Activator 12-35 wt% Carbon number of alkyl chain Mixing ratio in nonionic surfactant 12-13 40-85 wt% 14-15 5-50 wt% 16-18 3-40 wt% (b) Aluminosilicate Salt 10 to 60% by weight (c) 0.01 to 5% by weight of soap obtained by neutralizing 60 to 100 mol% of saturated or unsaturated fatty acid having 8 to 22 carbon atoms.

The polyoxyethylene ether type nonionic surfactant as the component (a) used in the present invention has a melting point of 40 ° C.
The following, that is, those that are liquid or slurry at 40 ° C are excellent in stain removal. As long as the carbon number of the alkyl chain of the component (a) is between 8 and 22, any branched or straight chain can be used, but in order to obtain the effect of the present invention without lowering the detergency, The carbon number of the alkyl chain of the nonionic surfactant to be prepared must be within the range shown above. In order to obtain a nonionic surfactant having such a blending ratio, for example, ethylene oxide may be added all at once to an alcohol mixture having different alkyl chain lengths within the range, or ethylene oxide may be added to each higher alcohol. You may mix the said nonionic surfactant so that the said compounding ratio may be satisfy | filled.

In order to obtain particularly excellent rinsing properties and defoaming properties, preferably an alcohol having the following composition has an average of 6 to 10:
It is a polyoxyethylene alkyl ether type nonionic surfactant to which moles of ethylene oxide are added. Number of carbon atoms in alkyl chain Blending ratio in nonionic surfactant 12 to 13 50 to 85% by weight 14 to 15 5 to 40% by weight 16 to 18 10 to 40% by weight.

Further, when washing with cold water, the distribution of the alkyl chain of the component (a) is set to the following composition, whereby sufficient detergency can be obtained while maintaining rinsability and defoaming property. Number of carbon atoms in alkyl chain Blending ratio in nonionic surfactant 12 to 13 40 to 60% by weight 14 to 15 40 to 50% by weight 16 to 18 3 to 10% by weight.

The component (a) is 12 to 35% by weight in the total composition,
Preferably, the amount is 15 to 30% by weight.

The aluminosilicate which is the component (b) of the present invention is a crystalline or amorphous aluminosilicate represented by the following formula. Crystalline aluminosilicates represented by the following formula (A) (zeolite) x (M _'2 0 or _{M "O) · Al 2 O} 3 · y (SiO 2) · w (H 2 O) (A) [Formula Where M'is an alkali metal atom, M "is an alkaline earth metal atom that can be exchanged with calcium, x, y, w are the number of moles of each component, x is 0.7 to 1.5, y is 0.8 to 6, w Is any positive number. As the detergent builder, those represented by the following general formula are particularly preferable.

Na ₂ O.Al ₂ O ₃ .n (SiO ₂ ) .w (H ₂ O) [where n is 1.8 to 3.0 and w is a number from 1 to 6]. ] The amorphous aluminosilicate x (M ₂ O) ・ Al ₂ O ₃・ y (SiO ₂ ) ・ w (H ₂ O) (B) represented by the following formula (B) (wherein M is a sodium atom) And / or represents a potassium atom, x, y and w represent the number of moles of each component, and x represents 0.7
-2.0, preferably 0.7-1.2, y is 1-6, preferably 1-5, and w is any positive number. ].

The component (b) is contained in the entire composition in an amount of 10 to 60% by weight. If the content of the component (b) is less than 10% by weight, the detergency is low, and if it exceeds 60% by weight, the rinsability is deteriorated.

In the present invention, among the amorphous aluminosilicates represented by the above formula (B), an amorphous aluminosilicate having an oil absorption capacity of 100 ml / 100 g or more measured according to JIS K 6220 is used. By doing so, the detergency and the powder physical properties are improved, and the rinsability becomes excellent, which is preferable. Such an amorphous aluminosilicate having an oil absorption capacity of 100 ml / 100 g or more is preferably incorporated in the composition in an amount of at least 10% by weight.

The soap as the component (c) of the present invention is a soap obtained by neutralizing 60 to 100 mol% by weight of saturated or unsaturated fatty acid having 8 to 22 carbon atoms, preferably 12 to 20 carbon atoms. The above may be mixed and used. (c) Ingredients in all compositions
The content is 0.01 to 5% by weight, preferably 0.05 to 3% by weight.

In the present invention, when the oil absorbing aluminosilicate shown above is not used as the component (b), the oil absorbing ability derived from silica other than the component (b) is used as the component (d). Is 150 ml / 100 g or more, preferably 200 ml
/ 100 g or more of an oil-absorptive carrier may be blended, whereby a nonionic powder detergent with less exudation and excellent powder properties can be obtained without impairing the effects of the present invention. Such oil-absorbent carriers are generally commercially available under the trade names of Tokuseal (Tokuyama Soda Co., Ltd.), TIXOLEX (Kofuran Chemical Co., Ltd.), Nipseal (Nippon Silica Co., Ltd.) and the like. The oil-absorptive carrier can be incorporated in an amount of 5 to 20% by weight, preferably 5 to 10% by weight in the total composition. It is desirable to use sodium carbonate as an alkaline agent in the composition of the present invention. Examples of sodium carbonate include heavy sodium carbonate (heavy ash) and light sodium carbonate (light), and the average particle size thereof is 10 to 2000 μ, preferably 100 to 10 μm.
It is 00μ. Sodium carbonate may be incorporated in the entire composition in an amount of 5 to 35% by weight, preferably 5 to 25% by weight. By further adding 1 to 5% by weight, preferably 1 to 3% by weight, of polyethylene glycol having a molecular weight of 4000 to 20000 to the composition of the present invention, the powder physical properties during long-term storage are further improved.

The powder detergent composition of the present invention contains, in addition to the above-mentioned components, an inorganic electrolyte such as sodium silicate or sodium sulfate (Borate), which is usually blended in detergents, or an inorganic chelate such as sodium tripolyphosphate. Agents, citrates, tetraacetylethylenediamine (TAED), nitrilotriacetic acid (NTA), aminopolyacetates, organic chelating agents such as polyacrylates, polyvinylpyrrolidone, antifouling agents such as carboxymethylcellulose, proteases, lipases, Enzymes such as cellulase and amylase, antioxidants, fluorescent dyes, bluing agents, and fragrances may be added. In addition, sodium silicate may interact with aluminosilicate to increase water-insoluble matter, which may cause a decrease in solubility and a problem of cloth adhesion.
It is desirable that the amount is not more than 1% by weight, more preferably not more than 1% by weight. When used as a bleaching detergent, it also stabilizes sodium percarbonate, sodium perborate mono- or tetrahydrate, bleaching agents such as organic peroxides, and peroxides such as magnesium silicate and sodium metaborate. Agents and bleach activators can be added. Further, if it is desired to impart a softening effect, a cationic surfactant or the like may be added.

The nonionic powder detergent composition of the present invention can be easily obtained by slowly adding or spraying a nonionic surfactant to the powder component while stirring. Further, in order to obtain particles having a high density and a uniform shape, the method described in EP 513824 can be used.

[0020]

The present invention will be further described in the following examples, but the present invention is not limited to these examples.

Example 1 Powder raw materials in the amounts shown in Table 1 (zeolite A, oil absorbing carrier,
Batch kneader with sodium carbonate, sodium polyacrylate, fluorescent dye, reducing agent) (PNV-1, Ilier Shokai)
Then, the liquid or semi-liquid nonionic surfactant shown in Table 1 was gradually introduced, and then the enzyme and a small amount of zeolite A were added and mixed to obtain a final detergent having the composition shown in Table 1. The polyoxyethylene alkyl ether type nonionic surfactant used in the examples was based on a commercially available higher alcohol "Dovanol 23" (manufactured by Shell Chemical Co., Ltd.) and further mixed with a single chain alcohol in a specific ratio. Then
The one to which ethylene oxide was added was used. The alkyl distribution and the average number of moles of ethylene oxide added were confirmed by gas chromatography analysis under the following conditions.

The detergent having the composition shown in Table 1 was used for the rinsability (the carbon number distribution of the alkyl chain of the nonionic surfactant and the amount of the soap blended are shown in Table 2).
10 minutes of washing and 8 minutes of rinsing under the following conditions, and the amount of bubbles remaining on the liquid surface after 8 minutes of rinsing was evaluated. Washing machine: 2-tank washing machine (Toshiba) 30 liters Detergent concentration: 0.0833% Clothes: 2 kg (cotton underwear / synthetic fiber shirt = 6/4.
Both have been worn) / 30 liter hardness; 4 ° DH temperature; 20 ° C

[0023]

[Table 1]

Note) * 1; Tokushiru (Tokuyama Soda Co., Ltd.), oil absorption capacity 350 ml / 100 g

[0025]

[Table 2]

Example 2 A detergent of formulation example 3 shown in Table 3 was prepared in the same manner as in Example 1,
The rinsability was evaluated in the same manner as in Example 1, and the detergency was evaluated by the following method. [Evaluation method of detergency] (Preparation of artificially contaminated cloth) A cotton cloth of 10 cm x 10 cm was contaminated with oil and fat having the following composition and a trace amount of carbon black (25 g / oil and fat 1000 g). Cotton seed oil 60% by weight Cholesterol 10% by weight Oleic acid 10% by weight Palmitic acid 10% by weight Liquid and solid paraffin 10% by weight (washing conditions) Washing time using a two-tub type washing machine (Toshiba Corp., Galaxy) 10 minutes, temperature 15 ° C, hardness of used water 3 ° DH
(Ca / Mg = 3/1), rinse with running water 8 minutes, detergent concentration 0.133
Washed in%. (Calculation of Washing Rate) The reflectance of the raw cloth and the contaminated cloth before and after washing at 550 mμ were measured with a self-colorimeter (manufactured by Shimadzu Corporation), and the washing rate D (%) was calculated by the following formula. The results are also shown in Tables 4 and 5. D = (L ₂ −L ₁ ) / (L ₀ −L ₁ ) × 100 (%) L ₀ : Reflectivity of original cloth L ₁ : Reflectivity of contaminated cloth before cleaning L ₂ : Contaminated cloth after cleaning Reflectance

[0027]

[Table 3]

Note) * 2: The amorphous aluminosilicate is produced as follows. To 100 parts by weight of sodium aluminate of sodium aluminate aqueous solution (Na ₂ O: Al ₂ O ₃ = 20.3: 28.2 (weight ratio)), ion-exchanged water is further added.
100 parts by weight of No. 3 water glass solution (prepared by adding 100 parts by weight of commercially available water glass) to 800 parts by weight of the solution was added dropwise in 20 minutes and heat-treated at 60 ° C for 20 minutes. Performed, filtered and washed. The obtained wet cake was pulverized with a crusher to obtain an amorphous aluminosilicate. The composition of the obtained amorphous aluminosilicate was analyzed by atomic absorption spectrometry and plasma emission spectrometry, and Al ₂ O ₃ = 27.2 wt%, SiO ₂ = 51.2%.
% By weight, Na ₂ O = 21.6% by weight (1.31Na ₂ O ・ Al ₂ O ₃
· 3.2 SiO _2). The oil absorption capacity was 200 ml / 100 g.

[0029]

[Table 4]

[0030]

[Table 5]

Claims (6)

[Claims] 1. A nonionic powder detergent composition comprising the following components (a), (b) and (c): (a) Polyoxyethylene alkyl ether type nonionic interface having a melting point of 40 ° C. or lower, an HLB of 9.0 to 16.0, an alkyl chain having the following carbon number distribution, and an ethylene oxide average addition mole number of 6 to 10: Activator 12-35 wt% Carbon number of alkyl chain Mixing ratio in nonionic surfactant 12-13 40-85 wt% 14-15 5-50 wt% 16-18 3-40 wt% (b) Aluminosilicate Salt 10 to 60% by weight (c) Soap obtained by neutralizing 60 to 100 mol% of saturated or unsaturated fatty acid having 8 to 22 carbon atoms 0.01 to 5% by weight 2. The nonionic powder detergent composition according to claim 1, wherein the component (a) polyoxyethylene alkyl ether type nonionic surfactant has a carbon number distribution of the following alkyl chains. Number of carbon atoms in alkyl chain Blending ratio in nonionic surfactant 12-13 50-85% by weight 14-15 5-40% by weight 16-18 10-40% by weight 3. The polyoxyethylene alkyl ether type nonionic surfactant as the component (a) has the following carbon number distribution of the alkyl chain, and the ethylene oxide average addition mole number is from 7 to 9. Item 2. The nonionic powder detergent composition according to Item 1. Number of carbon atoms in the alkyl chain Blending ratio in nonionic surfactant 12-13 40-60% by weight 14-15 40-50% by weight 16-18 3-10% by weight 4. The nonionic powder detergent according to claim 1, wherein the aluminosilicate as the component (b) is a crystalline or noncrystalline aluminosilicate represented by the following formula. Composition. Crystalline aluminosilicates x (M _'2 0 or _{M "O) · Al 2 O} 3 · y (SiO 2) · w (H 2 O) (A) wherein represented by the following formula (A), M 'Is an alkali metal atom, M "is an alkaline earth metal atom that can be exchanged with calcium, x, y and w are the number of moles of each component, x is 0.7 to 1.5, y is 0.8 to 6, and w is any It is a positive number. ] The amorphous aluminosilicate x (M ₂ O) ・ Al ₂ O ₃・ y (SiO ₂ ) ・ w (H ₂ O) (B) represented by the following formula (B) (wherein M is a sodium atom) And / or represents a potassium atom, x, y and w represent the number of moles of each component, and x represents 0.7
~ 2.0, y is 1 to 6, and w is an arbitrary positive number. ] 5. The amorphous aluminosilicate represented by the formula (B) has an oil absorption capacity of 100 ml measured according to JIS K 6220.
/ 100 g or more, The nonionic powder detergent composition according to claim 4, wherein the composition contains at least 10% by weight of the amorphous aluminosilicate. 6. Further, 5 to 20% by weight of an oil-absorptive carrier, which is derived from silica other than the component (b) and has an oil absorption capacity of 150 ml / 100 g or more as measured according to JIS K 6220, as the component (d).
The nonionic powder detergent composition according to any one of claims 1 to 5, which is contained.