JPH10330786A - Detergent composition for clothing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent compsn. which is stable even at a low temp., hardly produces soap scum, and is excellent in detergency by compounding water with an unsatd. fatty acid salt, a satd, fatty acid salt, a nonionic surfac tant, and sodium carbonate. SOLUTION: The unsatd. fatty acid salt is formed from an unsatd. fatty acid and a base. The unsatd. fatty acid is pref. a one selected form among oleic. linolic, linolenic, zoomaric, and gadoleic acids and a 14-22C unsatd. fatty acid obtd. from an oil or fat such as rice bran oil, cotton seed oil, rapeseed oil, soy bean oil, beef tallow, or lard. The base is sodium, potassium, etc., potassium being pref. The satd. fatty acid salt is formed form a satd. fatty acid such as caproic, caprylic, capric, lauric, or palmitic acid and a base similar to that of the unsatd. fatty acid salt. The nonionic surfactant is represented by the formula (wherein R<1> is a fatty acid residue; R<2> is H, methyl, or ethyl; EO is oxyethylene; and (n) is 1 or higher). Sodium carbonate is compounded as an inorg. electrolyte.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a liquid detergent composition for clothing.

[0002]

2. Description of the Related Art Soap is one of the oldest cleaning agents, but it has low raw material costs and manufacturing costs and is environmentally friendly.
Widely used for solid detergents, liquid detergents, etc. However, there are disadvantages such as low solubility in cold water and easy occurrence of so-called scum in hard water. Therefore, various studies have been made on soaps, that is, detergents containing fatty acid salts, in order to improve such disadvantages.

[0003] For example, Japanese Patent Publication No. 7-53878 proposes a liquid detergent composition for clothing containing unsaturated fatty acid potassium soap, fatty acid monoethanolamide ethylene oxide adduct and potassium carbonate. Also, Japanese Patent Laid-Open No. 6-3300
No. 86 proposes a liquid detergent composition containing soap, a fatty acid amide of N-alkylmonoethanolamine and potassium carbonate. In these inventions, by adopting the above-described composition, the disadvantages of solubility of fatty acid soap and generation of scum are improved.

[0004]

However, even if the composition is improved as described above, the above-mentioned drawbacks of the fatty acid salts are still fundamentally not improved. Was desired. Accordingly, an object of the present invention is to provide a liquid detergent composition for clothing which improves the above-mentioned drawbacks of the fatty acid salt, is stable even at low temperatures, generates less soap scum, and has excellent detergency. .

[0005]

Means for Solving the Problems That is, the present invention is directed to water,
Unsaturated fatty acid salt, saturated fatty acid salt, the following general formula (1)

Embedded image (Wherein, R ¹ represents a fatty acid residue, R ² represents a hydrogen atom, a methyl group or an ethyl group, EO represents an oxyethylene group, and n represents a number of 1 or more). It is a liquid detergent composition for clothing containing a surfactant and sodium carbonate.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The unsaturated fatty acid salt constituting the liquid detergent composition for clothing of the present invention comprises an unsaturated fatty acid and a base. Examples of unsaturated fatty acids include, for example, oleic acid, linoleic acid, linolenic acid, zomaric acid, gadrenic acid, erucic acid, serracoleic acid, etc., as well as unsaturated oils such as rice bran oil, cottonseed oil, rapeseed oil, soybean oil, tallow, lard, etc. Fatty acids obtained from fats and oils containing a large amount of glyceride are exemplified. Among these, unsaturated fatty acids having 14 to 22 carbon atoms are preferable, and oleic acid, tallow fatty acid and the like are particularly preferable in terms of detergency.

The base includes, for example, sodium, potassium, ammonia, monoethanolamine, diethanolamine, triethanolamine and the like, and potassium is preferred from the viewpoint of solubility in water.

Next, the saturated fatty acid salt constituting the liquid detergent composition for clothing of the present invention comprises a saturated fatty acid and a base. Examples of the saturated fatty acids include caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid and the like, as well as coconut oil fatty acids. The base is the same as the above-mentioned unsaturated fatty acid salt.

In the liquid detergent composition for clothing of the present invention, the amounts of the unsaturated fatty acid salt and the saturated fatty acid salt are not particularly limited, but they exhibit excellent detergency and are sufficiently soluble in water. The amount of the unsaturated fatty acid salt is preferably 5 to 20% by weight based on the total amount of the composition,
It is more preferably 8 to 15% by weight, and the content of the saturated fatty acid salt is preferably 15 to 35% by weight, more preferably 20 to 30% by weight based on the total amount of the composition.

Further, in the nonionic surfactant represented by the general formula (1) constituting the liquid detergent composition for clothing of the present invention, R ¹ represents a fatty acid residue. Examples of the fatty acid include the unsaturated or saturated fatty acids described above.
R ¹ is preferably a saturated or unsaturated fatty acid residue having 8 to 18 carbon atoms, more preferably a lauric acid residue, a coconut fatty acid residue, an oleic acid residue, a stearic acid residue, or the like. R ²
Represents a hydrogen atom, a methyl group or an ethyl group. EO represents an oxyethylene group. n represents 1 or more, and 1 to 50
Is preferable, and 1 to 20 are more preferable.

The nonionic surfactant represented by the general formula (1) can be usually produced by reacting monoethanolamines with a fatty acid and ethylene oxide.
In this case, R ² is determined by monoethanolamines used as a raw material. Examples of the monoethanolamines include N-monoethanolamine, N-methyl-N-monoethanolamine, N-ethyl-N-monoethanolamine, and the like.

Specific examples of the nonionic surfactant represented by the general formula (1) include adducts of 1 to 20 mol of coconut fatty acid monoethanolamide EO, 1 to 20 mol of adduct of lauric acid monoethanolamide EO, oleic acid Monoethanolamide EO 1-20 mol adduct, coconut fatty acid-N-
Methyl-monoethanolamide EO 1-20 mol adduct, lauric acid-N-methyl-monoethanolamide E
O1 to 20 mol adduct, oleic acid-N-methyl-monoethanolamide EO 1 to 20 mol adduct and the like can be exemplified.

In the liquid detergent composition for clothing of the present invention, the amount of the nonionic surfactant represented by the general formula (1) is not particularly limited, however, in order to exhibit effective soap dispersibility. Is 1 to 40% by weight based on the total amount of the composition
Is preferably, more preferably 5 to 30% by weight, and 10 to 2% by weight.
5% by weight is more preferred.

The liquid detergent composition for clothing of the present invention contains sodium carbonate as an inorganic electrolyte. In addition, it can be used together with an inorganic electrolyte or builder other than sodium carbonate.

In the liquid detergent composition for clothing of the present invention, the amount of sodium carbonate is not particularly limited. However, in order to effectively exhibit low-temperature stability and detergency, the amount of sodium carbonate is 0.1% based on the total amount of the composition. 5-15% by weight is preferred, and 1-1
0% by weight is more preferable, and 3 to 8% by weight is further preferable.

The liquid detergent composition for clothing of the present invention may contain other components. For example, nonionic surfactants such as alcohol ethers, esters and amides, anionic surfactants such as alkylbenzene sulfonic acid, alkyl ether sulfate, alkyl sulfate and alkyl sulfonic acid, cationic surfactants and carbohydrates It may contain an amphoteric surfactant such as betaine or sulfobetaine, or a foaming agent such as amine oxide.

In addition, the liquid detergent composition for clothing of the present invention may contain, if necessary, an inorganic salt, a metal ion scavenger, a re-contamination inhibitor, an enzyme, a chlorine scavenger, a bleaching agent, a solubilizer, and an enzyme activating agent. Agents, antioxidants, preservatives, alkalis, dyes, fragrances, and the like.

Examples of the inorganic salts include sodium silicate, potassium silicate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium sulfate, potassium sulfate and the like. Examples of the metal ion scavenger include tripolyphosphoric acid, pyrophosphoric acid, orthophosphoric acid, aluminosilicate, nitrilotriacetate, ethylenediaminetetraacetate,
Citrate, isocitrate, polyacetal carboxylate and the like can be mentioned. Examples of the anti-redeposition agent include polyethylene glycol, polyvinyl alcohol, polyvinyl pyrrolidone, carboxymethyl cellulose and the like. Examples of the enzyme include cellulase, protease, amylase, lipase, hemicellulase, glycosidase, glucose oxidase, and cholesterol oxidase. As a chlorine scavenger, for example,
Examples thereof include ammonium sulfate, urea, guanidine hydrochloride, guanidine carbonate, guanidine sulfamate, thiourea dioxide, monoethanolamine, diethanolamine, and triethanolamine. Examples of the bleaching agent include percarbonate, perborate, sulfonated phthalocyanine salt, hydrogen peroxide and the like. Examples of the solubilizer include ethanol, propanol, 2-propanol, ethylene glycol, propylene glycol, lower alkyl ethoxylate, benzenesulfonate, and paratoluenesulfonate. Examples of the alkali include sodium hydroxide and potassium hydroxide.

In the liquid detergent composition for clothing of the present invention, the balance of the above components is water.

[0020]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. In the following examples, parts and percentages are by weight unless otherwise specified. (Test 1: Low-temperature stability test) The adjusted detergent compositions of the present invention and the comparative product were stored at -5 ° C for 1 week, and the presence or absence of crystal precipitation was observed and evaluated based on the following criteria. ：: no precipitation △: slightly cloudy ×: precipitation

(Test 2: Soap residue floating amount test) 1 liter of hard water (hardness 150 ppm: converted into calcium carbonate)
3 g of the detergent composition of the present invention or the comparative product was dissolved, and the presence or absence of soap scum was observed with the naked eye.

(Test 3: Detergency Test) First, a cotton knit was cut into 11 × 13 cm, the short sides of the two cut cloths were aligned in the direction of the cloth, and a 1 cm margin was sewn and sewn together. It was created. Cross this fold of the collar of the clothes such as work clothes and fix it using the button,
The clothes were worn for three days. Remove the collar from the clothes,
It was cut to 5 cm x 5 cm and used as a stained cloth for testing. 1 g of a detergent composition of the present invention or a comparative product was dissolved in 1 liter of distilled water adjusted to a hardness of 150 ppm (calcium carbonate equivalent) with calcium chloride. Add 10 pieces of the above-mentioned test contaminated cloths, and use a tergot meter at 120 rpm.
And then rinsed twice for 3 minutes. After drying, the reflectance was measured. From the reflectance of the original cloth before cleaning and the contaminated cloth before and after cleaning, the cleaning rate was calculated by the following equation.

(Equation 1)

(Equation 2) R: reflectance

[0023]

[Table 1]

The raw materials in Table 1 are as follows: Amide 1: 3 moles of ethylene oxide adduct of coconut fatty acid N-methylmonoethanolamide Amide 2: 6 moles of ethylene oxide of coconut fatty acid N-methylmonoethanolamide Amide 3: 10 mol ethylene oxide adduct of coconut fatty acid N-methylmonoethanolamide Amide 4: 3 mol adduct of ethylene oxide of coconut fatty acid monoethanolamide Amide 5: 6 mol adduct of ethylene oxide of coconut fatty acid monoethanolamide 6: 10 mol ethylene oxide adduct of coconut fatty acid monoethanolamide Others: 2 parts of ethanol, 6.7 of propylene glycol
Parts, ethylenediaminetetraacetate 1 part

[0025]

The effect of the present invention is to improve the disadvantages of fatty acid salts, to provide a liquid detergent composition for clothing which is stable even at low temperatures, generates less soap scum and has excellent detergency. It is in.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 1:04 3:10)

Claims (1)

[Claims] 1. An unsaturated fatty acid salt, a saturated fatty acid salt,
The following general formula (1) (Wherein, R ¹ represents a fatty acid residue, R ² represents a hydrogen atom, a methyl group or an ethyl group, EO represents an oxyethylene group, and n represents a number of 1 or more). A liquid detergent composition for clothing containing a surfactant and sodium carbonate.