JPH1112593A - Cleaner composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a subject composition good in biodegradability, excellent in hard water resistance, and capable of manifesting an excellent washing effect against oily dirt of the skin, etc., by including a fatty acid salt and a secondary alkyl sulfate in a specific ratio. SOLUTION: This composition contains (A) a fatty acid salt and (B) a secondary alkyl sulfate in the weight ratio of components A/B regulated so as to be (70/30)-(5/95). For example, a compound of the formula; R<1> COOM<2> (R<2> is a 8-22C unbranched alkyl; M<2> is a counter ion providing a soluble salt such as Na and K) is exemplified as the component A. For example, the compound of the formula [(n) and (m) are each a number of >=0 satisfying the formula (n)+(m)=(9-21); M is the counter ion providing the soluble salt) is exemplified as the component B. The components A and B are preferably mixed in the composition so as to be 2-50 wt.% as both total amount. An effective amount of a lime soap dispersing agent is preferably mixed with the composition, and the addition is effective when the ratio of the components A/B is (70/30)-(20/80).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a detergent composition. More specifically, the present invention relates to a detergent composition containing a fatty acid salt and a secondary alkylsulfate in a specific ratio and exhibiting an excellent cleaning effect particularly on oily stains such as sebum.

[0002]

2. Description of the Related Art The use of fatty acid alkali metal salts, so-called soap, as a detergent has a long history, and until the advent of synthetic surfactants in the 1920s to 1930s, it was widely used as a detergent for clothing. Was being used. Fatty acid salts were replaced by synthetic (sulfate/sulfonate) activators because of soap scum (Ca salt) when used in hard water.
It is said that one of the causes is that it has a property of easily causing inactivation, that is, inferior in hard water resistance. From the standpoint of active use of agricultural resources, in the United States in the 1950s, technology development was actively carried out to improve the detergency of soap-based clothing detergents, and as a result, the production of soap residue was suppressed. Various LSDA (LimeSoap Dispers
ing Agent; lime soap dispersant) was developed. For a review of the results (WMLinfield; “Anionic Detergen
ts", Editor, Dekker, New York (1976)). They have hydrophilic groups such as weakly cationic or cationic groups, amphoteric groups which may form a complex with the carboxyl groups of soaps. Type and hydrophilic groups consist essentially of non-ionic and anionic groups, but HLB
Highly classified and highly hydrophilic type. That is, when the mixed micelles are formed, the complex formation reaction between Ca ion and carboxyl group is suppressed kinetically, or by increasing the solubilizing/dispersing power of soap Ca, it becomes crystals of soap Ca and precipitates out of the system of the cleaning solution. It had the effect of reducing the activated soap. On the other hand, as synthetic surfactants, mainly alkylsulfates derived from alcohol (hereinafter referred to as AS) and alkylbenzene sulfonates derived from mineral oil (hereinafter referred to as LA) are used.
Well-known surfactants such as S) are 19
It was developed in the 20s and 1930s and is now widely used for detergents. Among them, AS is known as an environmentally preferable activator because of its excellent biodegradability.

[0003]

However, in general, a fatty acid salt is excellent in biodegradability, but is poor in low-temperature solubility and has a high critical micelle temperature. Therefore, it is necessary to use a large amount thereof.
Moreover, it is easily affected by the hardness component. Also, AS
Is inferior in hard water resistance to LAS, so that various measures are required for incorporation into a detergent. Branched type AS and mixtures thereof, which are derived from general industrially synthesized alcohols such as the oxo method, are slightly advantageous in terms of hard water resistance as compared with linear AS. However, it is difficult to reach the detergency of LAS, particularly the detergency of oily stains, especially in a region where the temperature of washing water is low. On the other hand, the Guerbet type AS found by the present applicants exhibits excellent detergency, but has a problem that it is expensive in manufacturing.

Therefore, an object of the present invention is to provide a detergent composition having good biodegradability, little influence on the environment, excellent hard water resistance, and a suitable detergency.

[0005]

[Means for Solving the Problems] In order to solve these problems, the present inventors have conducted a research on blending a detergent composition having a better biodegradability, as compared with LAS such as a fatty acid salt and an alkylsulfate. For many years, we have been researching the formulation of the active agent part centered on surfactants that have excellent biodegradability under anaerobic conditions. As a result, they have found that a detergent containing a fatty acid salt and a secondary AS in a specific ratio has a synergistic effect on the detergency of oily soil such as sebum soil, and completed the present invention.

That is, according to the present invention, a fatty acid salt and a secondary alkylsulfate are defined as fatty acid salt/secondary alkylsulfate=70/
The present invention provides a detergent composition containing a weight ratio of 30 to 5/95.

[0007]

[In the formula, R ¹ is a saturated or unsaturated unbranched alkyl group having 8 to 22 carbon atoms, and M ² is a counter ion that gives a soluble salt of Na, K ² , NH ₄ , alkanol ammonium, or the like. ]

The fatty acid salt may be added as a neutralization product with an alkali agent, and particularly preferably as a neutralization product with a crystalline silicate. As the crystalline silicate used for neutralizing the fatty acid, those exemplified as the below-mentioned alkali component can be used.

The secondary AS used in the present invention is obtained by a known method, for example, in which the weight concentration is 90 to 100%.
It can be obtained by sulfating with concentrated sulfuric acid under conditions (for example, control of reaction temperature/optimization of dropping rate) that suppress the formation of unreacted products and olefin condensates, and neutralization in an alkaline aqueous solution such as NaOH. For the purification of unreacted components and impurities, conventionally used methods such as extraction with an organic solvent, separation, and distillation can be used. Specific examples of the secondary AS used in the present invention include compounds represented by the following formula (2).

[0009]

[Chemical 2]

[In the formula, n and m are numbers of 0 or more satisfying n+m=9 to 21, and M is a counter ion which gives a soluble salt such as Na, K, NH ₄ and alkanol ammonium. In particular, as the secondary AS, a compound (a) in which m in formula (2) is 0 and n is 9 to 15 and m in formula (2) is 1 and n
Is preferably one or more selected from the compound (b) of 8 to 14.

In the present invention, the fatty acid salt and the secondary AS are
Fatty acid salt/secondary AS=70/30 to 5/95, preferably 70/30 to 20/80, more preferably 60/40
Used in a weight ratio of ~20/80. If the weight ratio of both is out of this range, sufficient improvement of the cleaning power cannot be expected.

Further, the fatty acid salt and the secondary alkyl sulfate salt are
The total amount of both is 2 to 50% by weight in the composition, especially 10 to 4
It is preferably blended in an amount of 0% by weight.

The detergent composition of the present invention may contain a surfactant other than the fatty acid salt and the secondary AS within a range not impairing the effects of the present invention. The surfactant may be one generally used in detergents, and examples thereof include anionic surfactants, nonionic surfactants, amphoteric surfactants, and cationic surfactants. In order to improve the detergency, it is preferable to use an anionic surfactant or a nonionic surfactant as the main surfactant.

The anionic surfactant has 8 to 8 carbon atoms.
22 straight-chain or branched primary alcohol sulfate ester salts, alkenyl sulfate ester salts, sulfate ester salts of ethoxylates of alcohols having 8 to 20 carbon atoms, alkylbenzene sulfonates, paraffin sulfonates, α
-Olefin sulfonate, α-sulfo fatty acid salt, α-
Sulfo fatty acid alkyl ester salts are preferred. In the present invention, in particular, a linear alkylbenzene sulfonate having 10 to 14 carbon atoms in the alkyl chain and an alkyl sulfate having 12 to 18 carbon atoms are preferable, and the counter ion is preferably an alkali metal, particularly sodium and/or sodium. Potassium is preferred.

Particularly, the primary alkyl sulfate can be blended in a weight ratio of the secondary alkyl sulfate of secondary alkyl sulfate/primary alkyl sulfate=95/5 to 20/80. .. As the primary alkyl sulfate, the following formula (3)
The compound represented by R ² OSO ₃ M ³ (3) [In the formula, R ² is a saturated or unsaturated unbranched or branched alkyl group having 8 to 22 carbon atoms, M ³ is a soluble Na, K, NH ₄ , alkanol ammonium, or the like. It is a counterion that gives salt. ].

As the nonionic surfactant, polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene glycol fatty acid ester, polyoxyalkylene fatty acid glycerin monoester, alkyl glycoside, poly Oxyethylene polyoxypropylene block copolymers are preferred. In particular, the nonionic surfactant has 10 to 10 carbon atoms.
HLB value (calculated by Griffin method) obtained by adding [4 to 20 mol] of alkylene oxide such as ethylene oxide or propylene oxide to 18 linear or branched primary or secondary alcohols is 10.5 to 15.0. , Preferably 1
Polyoxyalkylene alkyl ethers such as 1.0-14.5 are preferred. Further, if necessary, a fatty acid alkanolamide or an alkylene oxide adduct thereof, an alkylamine oxide, a fatty acid monoamide type surfactant, an N-acyl amino acid type surfactant, an alkyl or alkenyl phosphate ester or a salt thereof may be added. good. In the present invention, the total content of the surfactant is 1 to 80% by weight, preferably 5 to 50% by weight. Further, the content of the anionic surfactant is 1 to 60% by weight, preferably 5 to 45% by weight, and the content of the nonionic surfactant is 1 to 30% by weight. It is preferably 2 to 20% by weight.

The composition of the present invention comprises an effective amount of LSDA.
(Lime Soap Dispersing Agent) is preferably blended, and particularly fatty acid salt/secondary AS is 70/30 to 20/8.
It is effective when 0. Here, the "effective amount" is the LSD
It means that the weight ratio of A/fatty acid salt=1/6 or more is satisfied. The term LSDA used in the present invention refers to a series of substances that suppress the formation of precipitates of fatty acid alkali metals, ammonium and amine salts by calcium and magnesium, and even in the presence of calcium and magnesium, a sufficient amount of By using LSDA,
A somewhat cloudy dispersed state can be maintained for a long time without causing precipitation. Unlike chelating agents and ion exchangers that show performance according to stoichiometric amounts for calcium and magnesium, it is a group of substances that have a high combined effect even in the presence of stoichiometric amounts of calcium and magnesium. is there. The basic chemical structure of LSDA is generally one having a bulky hydrophilic group such as ether, ester, amide, oxyethylene, or polyoxyethylene between the head group and the hydrophobic group. Specifically, an N-acyl-N-methyltaurine derivative (WRNobl
e，RGBistline,Jr.，WMLinfield，Soap Cosmet.Ch
em.Spec., 48(7), 38(1972)), polyoxyethylene alkyl ether sulphate (RGBistline, Jr., WRNo.
ble, JKWeil, WMLinfield, J.Amer.Oil Chem.So
c., 49, 63 (1972)), sulfates of fatty acid alkanolamides (JKWeil, N.Parris, AJStirton, J.Amer.Oil).
Chem. Soc., 47, 91 (1970)), methyl ester of α-sulfo fatty acid salt (W. Stein., H. Baumann, J. Amer. Oil Che.
m.Soc., 52, 323 (1975)), acylamide betaine (W.
M.Linfield, WRNoble, N.Parris, Proc. 59th Mid-Ye
ar Mtg., Chem. Specialties Manuf. Assoc., 85(197)
3)), Acylamide sulfobetaine (N.Parris, JKWe
il, WMLinfield, J. Amer. Oil Chem. Soc., 50, 509 (19
73)) and the like. Among these, polyoxyethylene alkyl ether sulfates (hereinafter abbreviated as ES),
And methyl ester of α-sulfo fatty acid salt (hereinafter α-
SFE) is easily available in the surfactant market and is particularly preferable from the viewpoint of cost performance.

The detergent composition of the present invention may further contain the following components within a range that does not impair the effects of the present invention.

<Crystalline aluminosilicate> The crystalline aluminosilicate compounded in the present invention is conventionally known as a synthetic zeolite, and is represented by A-type, X-type and P-type zeolites, particularly A-type. Molds are preferred. A synthetic zeolite having an average primary particle size of 0.1 to 10 .mu.m, particularly 0.1 to 5 .mu.m is preferably used.

In the present invention, the crystalline aluminosilicate (zeolite) is incorporated in the composition in an amount of 5 to 60% by weight, preferably 10 to 50% by weight.

<Crystalline Silicate> The crystalline silicate used in the present invention has a maximum pH of 11 or more when dispersed in ion-exchanged water at 20° C. in an amount of 11% by weight. On the other hand, 0.1N HCl was added to adjust the pH to 10.
It has an excellent alkaline ability that requires an aqueous solution of 5 ml or more, and is distinguished from crystalline aluminosilicates.

Particularly suitable as the crystalline silicate is one having the following composition. x(M ₂ O)・y(SiO ₂ )・z(Me _m O _n )・w(H ₂ O) (A) [In the formula, M is an element of group Ia in the periodic table (particularly preferably K and/or Or Na), and Me is a group IIa element of the periodic table, II
One or a combination of two or more elements selected from group b elements, group IIIa elements, group IVa elements or group VIII elements (preferably M
g, Ca), y/x = 0.5 to 2.6, z/x = 0.01 to
0.9, w=0 to 20, n/m=0.5 to 2.0. For the method for producing the crystalline silicate represented by the general formula (A), reference can be made to JP-A-7-89712.

Further, crystalline silicates having the following composition can also be preferably used. M ₂ O·x′(SiO ₂ )·y′(H ₂ O) (B) (wherein M represents an alkali metal (particularly preferably K and/or Na), and x′=1.5 to 2.6, y '=0 to 20 (particularly preferably substantially 0). The crystalline silicate of the general formula (B) is disclosed in JP-A-60-227895 and Phys. Chem. Glasses. 7, 127-138 ( 1966), Z. Kristall
Ogr., 129, 396-404 (1969) and the like. In addition, a powdery or granular product is available from Hoechst under the trade name “Na-SKS-6” (δ-Na ₂ Si ₂ O ₅ ). In the present invention, the crystalline silicate is incorporated in the composition in an amount of 1 to 30% by weight, preferably 2 to 25% by weight.

<Carboxylic acid type polymer> The carboxylic acid type polymer blended in the present invention has a function of sequestering metal ions, and also has an action of dispersing solid particle dirt from clothes to a washing bath and the particles are recycled to the clothes. It has the function of preventing adhesion (recontamination). The carboxylic acid-based polymer is a homopolymer or copolymer of acrylic acid, methacrylic acid, itaconic acid, etc., and as the copolymer, those obtained by copolymerizing the above monomer with maleic acid are preferable, and those having a molecular weight of several thousand to 100,000. preferable. In the present invention, the carboxylic acid polymer is incorporated in the composition in an amount of 1 to 20% by weight, preferably 1 to 10% by weight.

<Alkali agent> As the alkali agent, it is preferable to add a conventionally known alkali agent in addition to the above-described crystalline silicate. Examples of the alkaline agent include alkali metal carbonates such as sodium carbonate, which are collectively referred to as dense ash and light ash, and amorphous alkali metal silicates such as JIS Nos. 1, 2, and 3. These inorganic alkaline agents are effective in forming the skeleton of particles when the detergent is dried, and a detergent that is relatively hard and has excellent fluidity can be obtained. In the present invention, the alkaline agent is contained in the composition in an amount of 5 to 50% by weight, preferably 10 to 40% by weight.
Be compounded.

<Bleaching Agent and Bleach Activator> Examples of the bleaching agent include sodium percarbonate, sodium perborate (preferably monohydrate), sodium sulfate hydrogen peroxide adduct and the like, and particularly sodium percarbonate. Is preferred, and coating with sodium borate is preferred. For details, reference can be made to US Patent Publication No. 4526698. As the bleach activator, tetraacetylethylenediamine, acetoxybenzene sulfonate, JP-A-59-22999, JP-A-63-258447 or JP-A-6-316700.
Examples thereof include a metal catalyst prepared by stabilizing an organic peracid precursor or a transition metal described in JP-A No. 1994-26187 with a sequestering agent. The bleaching agent and the bleaching activator are blended by separately blending and granulating them into a detergent dough (particles). In the present invention, the bleaching agent is incorporated in the composition in an amount of 0 to 20% by weight, preferably 1 to 15% by weight. The bleach activator is contained in the composition in an amount of 0 to 10% by weight, preferably 1 to
8% by weight is blended.

<Enzyme> Enzymes (which are enzymes that inherently carry out an enzymatic action during the washing step) are classified according to the reactivity of the enzyme, such as hydrolases, oxidoreductases, lyases, transferases and isomerases. However, any of them can be applied to the present invention.
Particularly preferred are proteases, esterases, lipases, nucleases, cellulases, amylases and pectinases. In the present invention, the enzyme is incorporated in the composition in an amount of 0.01 to 10% by weight, preferably 0.01 to 5% by weight, in the composition.

<Fluorescent dye> As a fluorescent dye, 4,4'-bis-(2-sulfostyryl)-biphenyl salt, 4,4'-bis-(4-chloro-3-sulfostyryl)-biphenyl salt, 2 One or more of -(styrylphenyl)naphthothiazole derivative, 4,4'-bis(triazol-2-yl)stilbene derivative, and bis(triazinylamino)stilbene disulfonic acid derivative are contained in the composition. ~ 2
May be contained in a weight percentage, eg Whitex SA
(Commercially available from Sumitomo Chemical Co., Ltd.) and Chino Pearl CBS (commercially available from Ciba-Geigy) can be used.

The powder detergent composition of the present invention comprises the above-mentioned components, and the production method thereof is not particularly limited, and a conventionally known method can be used. It is desirable to granulate the spray-dried particles, preferably the spray-dried particles obtained by spray-drying an aqueous slurry having a water content of 30 to 80% by weight, to increase the bulk density. Alternatively, a method in which an unneutralized product of a surfactant is directly neutralized and mixed with an alkali agent such as an alkali metal hydroxide, kneaded with another washing builder, cooled after mixing, and ground Is also good. For increasing the bulk density, for example, a method of spraying non-ionic surfactant to spray-dried particles to densify it, or a method of densifying while directly absorbing non-ions in a powder component including an oil-absorbing carrier is available. Examples thereof include JP-A-61-69897, JP-A-61-69899, JP-A-61-69900, JP-A-2-222498, JP-A-2-222499, and JP-A-3222. The methods described in JP-A-33199, JP-A-5-86400 and JP-A-5-209200 can be referred to. Further, in order to use the crystalline aluminosilicate as a surface modifier of the granulated product, a small amount may be added during the granulation or immediately before the completion of the granulation, in addition to being mixed in the slurry. When the crystalline silicate is blended, it is preferable to add the crystalline silicate at the time of increasing the bulk density or to add it by dry blending. It is preferable that the crystalline silicate particles are coated on the surface thereof to suppress contact with water, and to suppress amorphization-decrease in cleaning performance due to storage.
As the surface coating substance, various organic acid agents and polyoxyalkylene alkyl ethers having reactivity with alkali,
And mixtures thereof are preferred. Specific examples of various organic acid agents include citric acid, lactic acid, succinic acid, tartaric acid, malic acid, diglycolic acid, oxydisuccinic acid, gluconic acid, maleic acid, fumaric acid, itaconic acid, malonic acid, acrylic acid, aconitic acid. , Crotonic acid, nitrilotriacetic acid and the like. Further, higher fatty acids such as palmitic acid, myristic acid, oleic acid, lauric acid, and stearic acid are more preferable as the organic acid agent from the viewpoint of protecting the crystalline silicate particles by hydrophobizing the particle surface. The fatty acid salt of the present invention may be neutralized and blended on the surface of the crystalline silicate as described above. In the present invention, it is particularly preferable that the fatty acid salt contains a crystalline silicate and a neutralized product of a fatty acid. When the alkali metal carbonate is blended, it may be added to the slurry, granulation, or dry blending. By adding the amorphous alkali metal silicate to the slurry,
The spray-dried particles have an appropriate strength, the handling property is improved, and the solidification property and the fluidity are improved even after being granulated into high bulk density detergent particles. It is preferable that the enzyme, the bleaching agent (and the bleaching activator) and other additives are separately granulated and dry-blended with the detergent particles obtained by the above-mentioned production method.

The average particle size of the detergent composition of the present invention is 200 to 1000 μm, particularly 200 to 1000 μm in order to obtain preferable powder properties.
It is preferably 600 μm. The bulk density of the detergent composition of the present invention is 0.5 to 1.2 g/cm ³ , preferably 0.6 to
It is about 1.0 g/cm ³ .

The detergent composition of the present invention has a concentration suitable for each washing depending on the washing method such as washing with a washing machine and washing with dipping, and the amount of clothes and water, the degree of dirt, the method of using a washing machine and the like. Can be used. For example, in the case of washing a washing machine, a washing concentration of 0.03 to 0.3% by weight can be used.

[0032]

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.

Examples 1 to 14 and Comparative Examples 1 to 13 Using the detergent compositions having the compositions shown in Tables 1 and 2, the cleaning power against each oil stain was evaluated by the following method.
The results are shown in Tables 1-2.

The composition of Example 1 in Table 1 was prepared by the following method. Prim. AS0.2kg, Sec.AS2.0k
g, C _{12 to} C ₁₄ fatty acid 0.25 kg, NaOH 0.045 kg (equivalent amount of fatty acid neutralization in slurry), nonionic surfactant 0.1 kg,
Crystalline aluminosilicate 1.0 kg, sodium carbonate 1.0 kg,
0.4 kg of potassium carbonate, 0.2 kg of sodium sulfate, 0.04 kg of sodium sulfite, 0.7 kg of sodium silicate JIS 2 solution
From (sodium silicate JIS No. 2), 0.4 kg of AA/MA copolymer aqueous solution (as AA/MA copolymer), 0.1 kg aqueous solution of polyacrylic acid (as polyacrylic acid), 0.15 kg of polyethylene glycol, 0.04 kg of fluorescent dye Water volume
A 50 wt% slurry was prepared and spray dried to prepare spray dried particles. The spray-dried particles were treated with 0.5 kg of crystalline aluminosilicate and 0.42 kg of treated crystalline silicate (the crystalline silicate and powdered Lunac L-98/5.8% by weight of the crystalline silicate). Lunack MY-98 [Kao Corporation]
HB-O type mill (manufactured by Chuo Kako Co., Ltd.)
, And obtained by crushing the crystalline silicate by oscillating for a certain period of time) and Sec.AS 0.7kg (finely pulverized powder) into a high-speed mixer (stirring granulator; manufactured by Fukae Kogyo Co., Ltd.) After being charged, the spray-dried particles were crushed and granulated with stirring. At this time, the treatment was carried out while spray-adding 0.2 kg of nonionic surfactant to the spray-dried particles. Furthermore, 0.5 kg of crystalline aluminosilicate was added and granulated.
A high density granular detergent composition was obtained by dry-mixing g of crystalline aluminosilicate with 0.22 kg of enzyme with a V blender (average particle size 410 μm, bulk density 780 g/liter).

Other Examples shown in Table 1 and Table 2,
Also for the composition of the comparative example, a high-density granular detergent composition was prepared according to the above-mentioned scheme with each compounding ratio. All the crystalline silicates in the compositions of the examples in Table 1 shall be blended as treated crystalline silicates, and C _{12 to} C ₁₄ fatty acids
In the Na salt compounding system, 5.8% by weight of fatty acid to the crystalline silicate, in the Na oleic acid compounding system, crystalline silicate treated with 4.9% by weight of fatty acid (liquid) to the crystalline silicate. Salt was used. All fatty acid salts other than those derived from the treated crystalline silicate were prepared by neutralizing the fatty acid with an equivalent amount of NaOH in the slurry. As in Examples 4 to 6 and 10 to 14 and Comparative Examples 2 to 13, when the compounding amount of Sec.AS was less than 20% by weight in the composition, Sec.AS was not added during crushing and granulation. Manufactured. As in Examples 9 to 12 and Comparative Examples 1 to 13, the compounding amount of the nonionic surfactant was 5 in each of the compositions.
With respect to those with weight% and 4% by weight, the amount of nonionic surfactant in the slurry was 0.3 kg and 0.2 kg, respectively. In Comparative Examples 1 to 13, the amount of crystalline aluminosilicate added during dry mixing was 0.4 kg. Examples 2, 6,
In systems including ES such as 8, 12 and Comparative Example 13,
The ES neutralized aqueous solution (0.2 kg of ES) is added to the slurry, and the amount of crystalline aluminosilicate added to the slurry is 0.7 kg, and the amount of crystalline aluminosilicate added during crushing granulation is 0.7. kg, and the amount of crystalline aluminosilicate added during dry mixing was 0.4 kg (Example) or 0.5 kg (Comparative Example). In the system containing α-SFE as in Examples 4 and 10, the amount of the crystalline aluminosilicate compounded in the slurry was 0.7 kg, and the α-SFE neutralized aqueous solution (α-SF
E was mixed with 0.3 kg of crystalline aluminosilicate in 0.2 kg) and spray-dried, and the mixture was added by dry blending with a V blender. The average particle size of the obtained powdery granular detergent is 410 ± 30 μm, and the bulk density is 0.75 ± 0.3
It was g/cm ³ .

<Detergency test> (Preparation of artificially contaminated cloth) An artificially contaminated cloth having the following composition was attached to the cloth to prepare an artificially contaminated cloth. The attachment of the artificial contamination liquid to the cloth was performed by printing the artificial contamination liquid on the cloth using a gravure roll coater. The process of adhering the artificial pollution liquid to the cloth to make the artificial pollution cloth is the cell capacity of the gravure roll 58.
cm ³ /m ² , coating speed 1.0 m/min, drying temperature 100° C., drying time 1 minute. As the cloth, [polyester/cotton (65/35 weight ratio) blended cloth plain weave undyed cloth] was used.

[Composition of artificial pollutant] Lauric acid 0.44% by weight Myristic acid 3.09% by weight Pentadecanoic acid 2.31% by weight Palmitic acid 6.18% by weight Heptadecanoic acid 0.44% by weight Stearic acid 1.57% by weight Oleic acid 7.75% by weight Triolein 13.06% by weight N-Hexadecyl palmitate 2.18% by weight Squalene 6.53% by weight Egg white lecithin liquid crystal 1.94% by weight Kanuma red clay 8.11% by weight Carbon black 0.01% by weight Tap water balance.

(Washing conditions and evaluation method) Five pieces of 6 cm x 6 cm artificially contaminated cloth prepared as described above were put in 1 liter of an aqueous detergent solution for evaluation, and washed with a tergotometer at 100 rpm. The washing conditions are as follows.・Washing conditions Washing time 10 minutes Detergent concentration 0.067% by weight Water hardness 71.2 mg CaCO ₃ /liter (4°DH) Water temperature 20°C Rinse 5 minutes with tap water.

The detergency is a self-recording colorimeter (NIPPON DENSH
Measured with OKU 300A) and the cleaning rate D
(%) was determined and the average value of the five measured values was shown as the detergency. D(%)=[(L ₂ −L ₁ )/(L ₀ −L ₁ )]×100 L ₀ ; reflectance of original cloth L ₁ ; reflectance of soiled cloth before washing L ₂ ; of soiled cloth after washing Reflectance

[0040]

[Table 1]

[0041]

[Table 2]

(Note)-Na salt of oleic acid: 1/3 (weight ratio) mixture of LUNAC SO-90L (manufactured by Kao Corporation) and LUNAC MY-98 (manufactured by Kao Corporation)-Sec.AS: No. Secondary alkyl sulfate Na salt (raw material α
-Derived from a mixture of olefins having 16 carbon atoms/14 carbon atoms=7/3 weight ratio, wherein the compounds of m=0 and n=13 and m=1 and n=12 total 70% by weight, m = 0
And the compounds of n=11 and m=1 and n=10 account for 30% by weight in total. ) ES: polyoxyethylene alkyl ether sulfate Na salt, average number of alkyl carbons = 14.1, ethylene oxide average added mole number 3.0 α-SFE: α-sulfofatty acid methyl ester Na salt,
Neutralized aqueous solution of sulfonate of methyl myristate/methyl palmitate=1/3 mixture ・LAS: linear alkylbenzene sulfonic acid Na salt (average molecular weight 344.6) ・Prim. AS: primary alkyl sulfate Na salt ( Alkyl carbon number 14-15, branching rate 21%) ・Nonionic surfactant: polyoxyethylene alkyl ether, average alkyl carbon number = 12.0, ethylene oxide average addition mole number 7.0 ・Crystalline aluminosilicate: 4A type zeolite, composition (Na ₂
O・Al ₂ O ₃・3SiO ₂・2H ₂ O), average particle size 2 μm, Ca ion exchange capacity 290CaCO ₃ mg/g ・Crystalline silicate: composition (M ₂ O・1.8SiO ₂・0.02M ⁴ O; here, M = Na, K, K /Na=0.03,M 4 = Ca, Mg, Mg / Ca =
0.01), average particle size 30μm, Ca ion exchange capacity 305CaC
O ₃ mg/g ・Polyethylene glycol: Average molecular weight 8000 ・AA/MA copolymer: Na salt of acrylic acid/maleic acid (molar ratio 7/3) copolymer, average molecular weight 50000 ・Polyacrylic acid: Na salt of acrylic acid homopolymer , Average molecular weight 5000 ・Enzyme: cellulase, protease (1/1 weight ratio) ・Fluorescent dye: Chinopearl CBS (manufactured by Ciba-Geigy)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code FI C11D 1:29) (72) Inventor Masaaki Yamamura 1334 Minato Minato, Wakayama City, Wakayama Prefecture Kao Corporation Research Laboratory

Claims (12)

[Claims] 1. A detergent composition containing a fatty acid salt and a secondary alkyl sulfate in a weight ratio of fatty acid salt/secondary alkyl sulfate=70/30 to 5/95. 2. The cleaning composition according to claim 1, wherein the total amount of the fatty acid salt and the secondary alkyl sulfate is 2 to 50% by weight in the composition. 3. The cleaning composition according to claim 1, wherein the fatty acid salt is a compound represented by the following general formula (1). R ¹ COOM ² (1) [wherein, R ¹ is a saturated or unsaturated unbranched alkyl group having 8 to 22 carbon atoms, and M ² is a counter ion which gives a soluble salt. ] 4. The cleaning composition according to claim 1, wherein the secondary alkyl sulfate is a compound represented by the following formula (2). [Chemical 1] [In the formula, n and m are numbers 0 or more that satisfy n+m=9 to 21, and M is a counter ion that gives a soluble salt. ] 5. The secondary alkyl sulfate is represented by m in the formula (2).
Is 0 and n is 9 to 15 (a) and m in the formula (2) is 1 and n is 8 to 14 (b).
The cleaning composition according to claim 4, which comprises one or more kinds. 6. The cleaning agent according to claim 1, wherein the primary alkyl sulfate is contained in a weight ratio of secondary alkyl sulfate/primary alkyl sulfate=95/5 to 20/80. Composition. 7. The cleaning composition according to claim 6, wherein the primary alkyl sulfate is a compound represented by the following formula (3). R ² OSO ₃ M ³ (3) [wherein, R ² is a saturated or unsaturated unbranched or branched alkyl group having 8 to 22 carbon atoms, and M ³ is a counter ion which gives a soluble salt. ] 8. An effective amount of lime soap dispersant (Lime Soap Di
The cleaning composition according to any one of claims 1 to 7, further comprising a spersing agent). 9. The detergent composition according to claim 8, wherein the lime soap dispersant is a polyoxyethylene alkyl ether sulfate ester salt and/or an α-sulfofatty acid methyl ester salt. 10. The cleaning composition according to claim 1, further comprising 1 to 30% by weight of a crystalline silicate. 11. The detergent composition according to claim 10, wherein the fatty acid salt comprises a crystalline silicate and a neutralization product of a fatty acid. 12. The form has an average apparent bulk density of 0.6 g/c.
m any one of claims 1 to 11 ³ or more is a powder granules
The cleaning composition according to the item.