JPH0633435B2 - Soap-containing powder detergent composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to a soap-containing powder detergent composition containing a higher fatty acid salt as a main detergent.

[Conventional technology]

Washing soap is used as a household and commercial cleaning agent. For commercial use, it is mainly used for removing Y-shirt collar and cuff stains, but because soap alone has insufficient cleaning power, conventional composite soap uses soap as the main cleaning agent and is non-ionic. Contains surfactants and builders.
For example, JP-A-57-30799 discloses a detergent composition containing 1 to 30% of a soap containing an unsaturated higher fatty acid salt as a main component, 2 to 30% of a synthetic surfactant and up to 50% of a builder salt. Has been done.

[Problems to be solved by the invention]

However, when a nonionic surfactant is added to soap, there is a problem that solidification occurs during product storage.

[Means for solving problems]

The present inventors have conducted intensive studies to solve the above-mentioned problems without lowering the detergency, and as a result, blended a specific nonionic surfactant and a water-soluble polymer compound at a specific ratio with soap. The present invention has been accomplished by finding out what should be done.

That is, the present invention is a detergent composition containing a higher fatty acid salt (A) as a main active ingredient, which contains the following components (B) and (C), and (B) / (A) is 0.01 to 0.06 by weight. And (C) / (A) is 0.01 to 0.1 in weight ratio, (B) HLB is 10 to 15 nonionic surfactant, (C) molecular weight It provides 3,000 to 20,000 water-soluble polymer compounds.

The higher fatty acid salt used as a cleaning main component in the present invention decomposition of animal or vegetable fats, salts of natural fatty acids of C ₈ ~ ₂₄ obtained by fractionation, especially sodium salts are used. Natural fats and oils as raw materials of natural fatty acids include beef tallow, lard, bone fat, fish fat, animal fats such as whale oil, palm oil,
Vegetable oils such as palm kernel oil, rice bran oil, soybean oil, cottonseed oil and coconut oil are exemplified. These raw materials are used alone or in a mixed form for decomposition, or they are used by mixing the fatty acids of their respective derivatives.

The composition of the higher fatty acid is not particularly limited, but is 3
0 to 40% by weight (abbreviated as%) of C ₁₆ to C ₂₄ saturated fatty acid sodium, 55 to 65% of C ₁₆ to C ₂₄ unsaturated fatty acid sodium, and 0 to 10% of C _{12 to} C ₁₄ saturated A mixture containing sodium fatty acid is particularly suitable from the viewpoint of cleanability at low temperatures.

The content of the higher fatty acid salt is usually selected in the range of 10 to 90%, but in the range of 30 to 70%, the best results can be obtained in terms of both anti-caking and cleaning performance.

As the nonionic surfactant as the component (B) used in the present invention, those having HLB of 10 to 15 are used, and HLB 11 to 13 are particularly preferable.

Specific examples of the nonionic surfactant include polyoxyethylene alkylphenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, long-chain fatty acid monoethanolamide, and long-chain fatty acid diethanolamide.

The content of the above nonionic surfactant is 1 to 6% by weight, and more preferably 1 to 4% by weight based on the higher fatty acid salt.

The molecular weight of the water-soluble polymer compound as component (C) is 3,000-
Those of 20,000 are used, but those of 3,000 to 9,000 are particularly preferable.

Specific examples of the water-soluble polymer compound include homopolymers of acrylic acid or (and) methacrylic acid, that is, polyacrylic acid, polymethacrylic acid, acrylic acid-methacrylic acid polymer (herein, for convenience, A homopolymer) or a copolymer of acrylic acid or methacrylic acid and a monomer copolymerizable therewith or a salt thereof is used. Examples of the monomer include maleic anhydride, itaconic acid, fumaric acid, methyl vinyl ether, ethylene, propylene, styrene, and pyrrolidonecarboxylic acid. These polymers may be used in the acid state, but it is generally preferred to neutralize and use in the form of a salt. Examples of the salt include sodium, potassium, ammonium, monoethanolamine, diethanolamine,
Examples thereof include salts such as triethanolamine.

Among these, sodium polyacrylate having a molecular weight of 3,000 to 9,000 is particularly preferable.

These water-soluble polymer compounds are 1 for the higher fatty acid salt.
The amount is 10 to 10% by weight, preferably 1 to 5% by weight.

The cleaning composition of the present invention, in addition to the above-mentioned essential components, carbonates, silicates, sulfates, phosphates, inorganic builders such as aluminosilicates, sodium ethylenediaminetetraacetate, sodium nitrilotriacetate, citric acid. Organic builders such as soda,
Anti-recontamination agents such as carboxymethyl cellulose and polyethylene glycol, fluorescent agents, coloring agents, bactericides, enzymes,
Fragrances can be added.

Among the organic builders, sodium ethylenediaminetetraacetate is particularly effective in enhancing the detergency, and the composition contains 0.1 to 5
%, Preferably 0.1 to 2%.

〔The invention's effect〕

The detergent composition of the present invention does not cause solidification during product storage, and is excellent in detergency even though the amount of the nonionic surfactant is small.

Further, there is an advantage that the pulverizability does not decrease when the manufacturing process of kneading the raw materials and then pulverizing them is performed.

〔Example〕

Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.

Example 1 A composition shown in Table 1 was prepared by adding polyoxyethylene alkyl ether to higher fatty acid sodium and sodium polyacrylate.

For these cleaning compositions, T / C
The Y-shirt was washed with a cloth, and the degree of stain removal was visually evaluated.

(N = 10) Washing method Detergent concentration: 0.15% by weight Washing water: 8 ° DH Temperature: 40 ° C Bath ratio: 10 sheets / 1,000 ml Washing solution Washing machine: Targotometer (rotation speed 120 rpm) Washing time: 10 minutes Rinse: 5 minutes The results are shown in Table 1.

The breaking load (g) of the above cleaning composition was measured by the following method to evaluate the anti-caking property. (N =
2) The smaller the breaking load, the better the prevention of caking.

Measurement method Sample weight: 15 g Weight: 1 kg Time: 3 minutes Temperature: Room temperature Measuring instrument: Rheometer The results are shown in Table 1.

Example 2 A composition shown in Table 2 was prepared by adding sodium polyacrylate to higher fatty acid sodium and polyoxyethylene alkyl ether.

These detergent compositions were evaluated for detergency and anti-caking property in the same manner as in Example 1.

The results are shown in Table 2.

Claims (4)

[Claims] 1. A detergent composition containing a higher fatty acid salt (A) as a main active ingredient, containing the following ingredients (B) and (C):
A cleaning composition, wherein the weight ratio of (B) / (A) is 0.01 to 0.06, and the weight ratio of (C) / (A) is 0.01 to 0.1. (B) Nonionic surfactant with HLB of 10 to 15 (C) Water-soluble polymer compound with molecular weight of 3,000 to 20,000 2. The detergent composition according to claim 1, wherein the compounding amount of the higher fatty acid salt (A) is 30 to 70% by weight. 3. The composition of the higher fatty acid (A) has a composition of 0 to 10% by weight of C _{12 to} C ₁₄ saturated sodium fatty acid, 30 to 40% by weight of C _{16 to} C ₂₄ saturated fatty acid, and C _{16 to} C _24.
The cleaning composition according to claim 1, which contains 55 to 65% by weight of unsaturated fatty acid sodium. 4. The water-soluble polymer compound (C) has a molecular weight of 3,000-
A cleaning composition according to claim 1 which is 9,000 sodium polyacrylate.