JP3246843B2 - Nonionic powder detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cleaning composition.
More specifically, the nonionic surfactant is a powder detergent composition of the main base, particularly excellent in dissolution and dispersibility of detergent particles. The present invention relates to a nonionic powder detergent composition having dispersibility and exhibiting excellent dispersibility even at high temperature washing.

[0002]

BACKGROUND OF THE INVENTION Nonionic surfactants have good hard water resistance, so they have remarkable detergency and dispersibility of oily stains, and have very good biodegradability. It is regarded as important as a detergent for cleaning. However, non-ionic surfactants used for cleaning are usually liquid at room temperature, so if a large amount of the non-ionic surfactant is mixed with a powder detergent in a liquid state, the non-ionic surfactant gradually exudes over time. From the inside of a paper container, the fluidity of the powder detergent is significantly impaired, and furthermore, there is a problem that caking occurs and the detergent is hardened, thereby significantly impairing the commercial value. The cleaning agent containing a nonionic surfactant as a main base material is mainly in a liquid form.

[0003] For example, Japanese Patent Application Laid-Open No. 50-19813 discloses a premix (preliminary mixture) in which a nonionic surfactant is finely distributed on zeolite or a mixture of zeolite and an inorganic peroxide that generates hydrogen peroxide in water. Flowable detergents containing 30-100% and 0-70% of a spray-dried detergent are disclosed. JP-A-61-89300 discloses that after mixing a water-insoluble powder and silica powder, a nonionic surfactant is sprayed, and then a zeolite powder is added to prepare a granulated material. It is disclosed that a nonionic surfactant-containing granular detergent containing a detergent and a granular detergent containing an anionic surfactant has good fluidity and can prevent caking. As described above, many studies have been made to improve the flowability of nonionic surfactant-containing detergents. In addition, non-ionic surfactants obtained by impregnating a water-insoluble powder or silica powder with a nonionic surfactant are used as the main base material for storage under high humidity or cleaning at high temperatures. It has been observed that the solubility tends to be significantly worse. Research on this problem has also been made, and JP-A-5-5100 discloses that by using an oil-absorbing carrier containing a specific substance, it is possible to prevent good deterioration in solubility even when stored under high humidity. It has been disclosed. Previously, the applicant of the present application
In the publication, by using an amorphous aluminosilicate having a specific pore distribution and a water content of 20% or less,
Disclosed is to prevent the degradation of solubility in high-temperature cleaning. However, after further studies, it was clarified that the deterioration of solubility in high-temperature cleaning was not completely prevented when left under severe conditions such as high temperature and high humidity for a long period (one month or more). As a result, further improvements have been required.

[0004]

Means for Solving the Problems The present inventors have studied a detergent using a nonionic surfactant as a main cleaning base, and as a result of intensive studies on the above problems, surprisingly, the average carbon By blending a certain amount of a fatty acid mixture having a specific number in a specific range and further containing a large amount of an amorphous aluminosilicate having a large amount of water, it is significantly excellent in long-term storage under severe conditions (for example, one month or more). It has been found that the compound exhibits excellent solubility and dispersibility, and also exhibits excellent solubility and dispersibility even at the time of high-temperature washing.

That is, the present invention provides the following components (a), (b), (c), (d)
And a non-ionic powder detergent composition substantially free of alkali metal silicates. (a) 12 to 35% by weight of a nonionic surfactant (b) The water content measured by drying at 800 ° C. for 1 hour is 25 to 30%
% Of amorphous aluminosilicate 10% to 40% by weight (c) Crystalline aluminosilicate 10% to 30% by weight However, component (b) + component (c) is 50% by weight or less (d) Average carbon chain length 10 0.1 to 5% by weight of a saturated and / or unsaturated fatty acid mixture of -20.

As the nonionic surfactant which is the component (a) of the present invention, a nonionic surfactant having a melting point of 40 ° C. or lower, that is, a liquid or slurry at 40 ° C. is excellent in removing stains. Specific examples of the component (a) include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether,
Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbite fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene castor oil, polyoxyethylene alkylamine, glycerin fatty acid ester, higher fatty acid alkanolamide,
Alkyl glucoside, alkylamine oxide and the like can be mentioned. Among them, as a main nonionic surfactant, a linear or branched chain having an average carbon number of 10 to 15, preferably 11 to 14,
It is desirable to use a polyoxyethylene alkyl ether having an average addition number of ethylene oxide of primary or secondary alcohol of 4 to 15, preferably 4 to 9.

[0007] The surfactant of component (a) is contained in the total composition in an amount of 12%.
3535% by weight, preferably 15-30% by weight.

The aluminosilicate as the component (b) of the present invention has a water content of 25 to 30 measured at 800 ° C. for 1 hour.
% Amorphous aluminosilicate. As the component (b), an amorphous aluminosilicate represented by the following formula (I) is particularly preferable.

X (M ₂ O) · Al ₂ O ₃ · y (SiO ₂ ) · w (H ₂ O) (I) wherein M ′ represents a sodium atom and / or a potassium atom; y and w represent the number of moles of each component, and x is 0.7 to
2.0, y is 1.8 to 6, and w is any positive number. ｝ Such an amorphous aluminosilicate can be synthesized by reacting an alkali metal aluminate and an alkali metal silicate according to a conventional method, and the adjustment of the water content can be changed by the concentration or composition of the raw material. .

[0010] The component (b) is incorporated in the composition in an amount of 10 to 40% by weight, preferably 10 to 30% by weight. (b) The amount of components
If it is less than 10% by weight, the fluidity of the detergent particles is significantly deteriorated. If the water content of the component (b) after drying at 800 ° C. for 1 hour is less than 25%, the fluidity deteriorates, and when it exceeds 30%, caking may occur. In addition, the solubility tends to decrease during washing at a high temperature.

In the present invention, in particular, among the non-crystalline aluminosilicates represented by the above (I), JIS
By using an amorphous aluminosilicate having an oil absorption capacity of 100 ml / 100 g or more measured based on K 6220, the powder properties are improved, the rinsing properties are improved, and the effects of the present invention are improved. It is preferable to further increase. Such an amorphous aluminosilicate having an oil absorption capacity of 100 ml / 100 g or more is preferably incorporated in the composition at least 10% by weight or more.

As the crystalline aluminosilicate which is the component (c) of the present invention, a crystalline aluminosilicate represented by the following formula (II) is preferable. x (M _'2 O or _{M "O) · Al 2 O} 3 · y (SiO 2) · w (H 2 O) (II) { wherein, M' is an alkali metal atom, M" is interchangeable with calcium X, y, and w represent the number of moles of each component, x is 0.7 to 1.5, y is 1.8 to 6, and w is any positive number. ｝ Component (c) is present in the composition in an amount of 10 to 30% by weight, preferably 10 to 30% by weight.
20% by weight is blended. If the amount of the component (c) is less than 10% by weight, the detergency is significantly reduced.

In the present invention, the component (b) and the component (c)
The total amount of the components in the composition is not more than 50% by weight, preferably
If it is less than 40% by weight, and if it exceeds 50% by weight, there is a problem in rinsing properties.

The fatty acid mixture which is the component (d) of the present invention comprises:
Any of saturated fatty acids and unsaturated fatty acids may be used, and any of straight-chain fatty acids and branched-chain fatty acids may be used. The fatty acid mixture used in the present invention has an average carbon chain length of 10 to 20, preferably an average carbon chain length of 11 to 18, and more preferably an average carbon chain length of 12 to 16. . If the average carbon chain length is less than 11, the odor of the composition will be poor, and if it is more than 18, the detergency may be reduced. (d) Component is present in the composition
0.1-5% by weight, preferably 0.3-4% by weight. As the fatty acid mixture of the component (d), a mixture of fatty acids derived from vegetable oils and fats, fatty acids derived from animal fats and oils, and a single fatty acid, or a fatty acid mixture obtained by further mixing these can be used.

In the present invention, the component (a)
The weight ratio (d) / (b) of the component (d) is preferably 0.01 to 0.5. When the weight ratio is less than 0.01, the effect of the present invention is hardly obtained, and when the weight ratio is 0.5 or more, the fatty acid is not sufficiently dispersed and adversely affects the solubility.

When an amorphous aluminosilicate having a high water content such as the component (b) of the present invention is used as an oil-absorbing carrier for a nonionic surfactant, the solubility tends to decrease. d) By using a fatty acid mixture having a specific average carbon number of the components in combination, it is possible to obtain a detergent composition which exhibits good solubility even after storage under severe conditions and exhibits excellent solubility even at high temperature washing. Can be

In the nonionic powder detergent composition of the present invention, the following various surfactants can be used in addition to the above essential components (a) to (d). Examples of the anionic surfactant include alkyl benzene sulfonate, alkyl or alkenyl ether sulfate, alkyl or alkenyl sulfate, α-olefin sulfonate, α-sulfofatty acid salt or ester salt, alkyl or alkenyl ether carboxylate, Examples thereof include amino acid type surfactants, N-acyl amino acid type surfactants, alkyl or alkenyl phosphates or salts thereof. The composition of the present invention may contain a fatty acid salt. Examples of the amphoteric surfactant include a carboxy type or sulfobetaine type amphoteric surfactant, and examples of the cationic surfactant include a quaternary ammonium salt.

In addition, the nonionic powder detergent composition of the present invention may contain conventional auxiliary additives such as tripolyphosphate,
Phosphates such as pyrophosphate, aminotri (methylenephosphonic acid), 1-hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetra (methylenephosphonic acid),
Diethylenetriaminepenta (methylenephosphonic acid),
And salts thereof; salts of phosphonocarboxylic acids such as 2-phosphonobutane-1,2-dicarboxylic acid; salts of amino acids such as aspartic acid and glutamic acid; aminopolyacetates such as nitrilotriacetate and ethylenediaminetetraacetate; Polymer electrolytes such as acrylic acid, polyaconitic acid, copolymers of acrylic acid and maleic acid, non-dissociated polymers such as polyethylene glycol, polyvinyl alcohol and polyvinylpyrrolidone, divalent metal ion scavengers, silicates, carbonates, and sulfurous acid Salts, alkali agents such as sulfates or inorganic electrolytes, layered silicates described in JP-A-60-227895, anti-recontamination agents such as polyvinylpyrrolidone, carboxymethylcellulose, enzymes such as cellulases, proteases, lipases, amylases, Paratoluene sulfonate, sulfosuccinate, talc, water Of calcium, anti-caking agents such as silicates, tert-butyl hydroxy toluene,
An antioxidant such as distyrenated cresol, a fluorescent dye, a bluing agent, a fragrance and the like may be added. However, JIS
An amorphous alkali metal silicate such as No. 1 sodium silicate is not substantially contained in the present invention because it causes a decrease in dissolution / dispersibility. When used as a bleaching detergent, sodium percarbonate, mono- or tetrahydrate of sodium perborate, a bleaching agent such as an organic peroxide, a stabilizer for a peroxide such as magnesium silicate or sodium metaborate. ,
Bleaching activators and the like can be blended. These are not particularly limited, and may be mixed according to the purpose.

[0019]

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

Example 1 (1) Preparation of powder detergent A batch kneader was prepared by mixing a fatty acid mixture shown in Table 1 and raw materials shown in Table 2 (12% by weight of zeolite A, an oil-absorbing carrier, sodium carbonate, sodium sulfite, and a fluorescent dye). (PNV-1, Irie Shokai), gradually introduce the liquid or semi-liquid nonionic surfactant shown in Table 2, and then add and mix the remaining zeolite A and enzyme, and obtain the final detergent having the composition shown in Table 2. Got the product. The alkyl composition and iodine value of the fatty acid mixture used in the experiment are shown in Table 1. The water content of the amorphous aluminosilicate (b) was adjusted by changing the drying conditions in the production process.

[0021]

[Table 1]

[0022]

[Table 2]

Note: * 1: "Amorphous aluminosilicate" is manufactured as follows. Sodium aluminate aqueous solution (Na
_{2 O: Al 2 O 3 =} 20.3: 28.2 ( weight ratio)) of the further ion-exchanged water to sodium aluminate to 100 parts by weight of those prepared by adding 2000 parts by weight) No. 3 water glass solution to 800 parts by weight (commercially available water 100 parts by weight of glass was added and adjusted) 100 parts by weight was added dropwise in 20 minutes, and heat treatment was performed at 60 ° C. for 20 minutes.
Washed. The obtained wet cake was pulverized with a crusher to obtain an amorphous aluminosilicate. As a result of atomic absorption and plasma emission analysis, the composition of the obtained amorphous aluminosilicate was as follows: Al ₂ O ₃ = 27.2% by weight, SiO ₂ = 21.6%, Na ₂ O =
21.6% by weight. The oil absorption capacity is 186ml / 100g
Met. * 2: The amount of water in the composition, which varies with the amount of water in the amorphous aluminosilicate (the same applies to the following table).

(2) Evaluation of Solubility of Powder Detergent The obtained detergent particles are placed in a commercially available carton for detergent under the condition that a humidity change of 40 to 80% at 30 ° C. without a lid is repeated in a two-day cycle. After storage for 6 months, samples were withdrawn and tested for solubility. Solubility is 10 ℃,
Dissolve the detergent in 1 liter of tap water at 20 ° C and 30 ° C to a concentration of 0.1% by weight, stir for 10 minutes, pass the detergent dispersion through a 200-mesh sieve, and measure the weight of the non-passage on the mesh And expressed as% by weight per dissolved detergent. Table 3 shows the results.

[0025]

[Table 3]

Examples 2 to 4 Powder detergents shown in Tables 4 to 6 were prepared. Here, the kind and the amount of the fatty acid mixture were the same as the amounts of the inventive products 1 to 7 in Table 3. The water content of the amorphous aluminosilicate is also the same as in Table 3.

[0027]

[Table 4]

[0028]

[Table 5]

[0029]

[Table 6]

When the above powder detergent was subjected to a solubility test in the same manner as in Example 1, the compositions of Examples 2 to 4 showed good solubility as in Example 1.

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI C11D 3:12 C11D 3:12 3:20) 3:20) (56) References JP-A-6-179899 (JP, A) JP-A Sho JP-A-3-115496 (JP, A) JP-A-4-363400 (JP, A) JP-A-5-5100 (JP, A) JP-A-6-10000 (JP, A) A) JP-A-6-9999 (JP, A) JP-A-4-306300 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C11D 1/66-1/94 C11D 17 / 06 C11D 3/12 C11D 3/20

Claims (5)

(57) [Claims] 1. A non-ionic powder detergent composition substantially free of alkali metal silicates comprising the following components (a), (b), (c) and (d): (a) 12 to 35% by weight of a nonionic surfactant (b) The water content measured by drying at 800 ° C. for 1 hour is 25 to 30%
% Of amorphous aluminosilicate 10% to 40% by weight (c) Crystalline aluminosilicate 10% to 30% by weight However, component (b) + component (c) is 50% by weight or less (d) Average carbon chain length 10 0.1 to 5% by weight of a saturated and / or unsaturated fatty acid mixture of -20. 2. The component (a) has an average carbon chain length of 11 to 14,
2. A polyoxyethylene alkyl ether type nonionic surfactant having an average number of moles of added EO of 4 to 9.
A nonionic powder detergent composition as described in any one of the preceding claims. 3. A crystalline aluminosilicate wherein the component (b) is an amorphous aluminosilicate represented by the following general formula (I), and the component (c) is a crystalline aluminosilicate represented by the following general formula (II) The nonionic powder detergent composition according to claim 1 or 2, wherein Component (b): Amorphous aluminosilicate x (M ₂ O) .Al ₂ O ₃ .y (SiO ₂ ) .w (H ₂ O) represented by the following formula (I) (I) M ′ represents a sodium atom and / or a potassium atom, x, y, w represent the number of moles of each component, and x is 0.7 to
2.0, y is 1.8 to 6, and w is any positive number. ｝ Component (c): crystalline aluminosilicate represented by the following formula (II) x (M ′ ₂ O or M “O) · Al ₂ O ₃ · y (SiO ₂ ) · w (H ₂ O) (II In the formula, M 'is an alkali metal atom, M "is an alkaline earth metal atom exchangeable with calcium, x, y, and w represent the number of moles of each component, x is 0.7 to 1.5, and y is 1.8 to 6, w is any positive number. ｝ 4. The non-crystalline aluminosilicate represented by the general formula (I) has an oil absorption capacity of 100 ml / 100 g or more measured based on JIS K 6220, and 2. A composition comprising at least 10% by weight of the composition.
The nonionic powder detergent composition according to any one of claims 3 to 3. 5. The weight ratio of the component (a) to the component (d) is (d) /
The nonionic powder detergent composition according to any one of claims 1 to 4, wherein (a) = 0.01 to 0.5.