JP2937841B2 - Concentrated liquid detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentrated liquid detergent composition having good fluidity and good detergency.

[0002]

2. Description of the Related Art Liquid detergents for clothing are characterized by good solubility in water, no whitening of clothes resulting from the undissolved detergent, and no accumulation of sludge such as zeolite in drains. Is mentioned. Further, since it is a liquid, it can be used for various purposes such as spot washing and soaking.

[0003] Surfactants used in liquid detergents include anionic surfactants such as alkyl benzene sulfonates, alkyl (ether) sulfates, α-sulfomethyl ester salts, α-olefin sulfonates, and the like. As nonionic surfactants, polyoxyethylene alkyl ethers and polyoxyethylene fatty acid esters are generally used.

[0004] In particular, in recent years, it has been emphasized that compactness is important. For this reason, alkyl benzene sulfonate and α-olefin sulfonate, which can be easily increased in concentration, and low concentration because of low CMC. In many cases, polyoxyethylene alkyl ether which can provide good detergency is used as a main base.

However, since liquid detergents use water as a solvent, it is difficult to concentrate them as much as powdered products, and since they do not use a powder builder, they are inferior to powder detergents in terms of detergency. I have. Many current concentrated liquid detergents are intended for special uses, such as neutral detergents for silk and hair fibers, detergents with a softening effect, detergents for partial washing, etc. Currently, compact powder detergents dominate the market.

[0006] As described above, concentrated liquid detergents have problems in detergency and concentration thereof, and are not as widely accepted as powdered products. However, as the detergency is enhanced and the size is reduced, it is inevitable that a high-performance detergent that fully utilizes the properties of the concentrated liquid detergent will be produced.

[0007] From such a background, development of a concentrated liquid detergent which is easy to concentrate and has good cleaning properties has been eagerly desired.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a concentrated liquid detergent composition having excellent detergency.

[0009]

Means for Solving the Problems In view of such circumstances, the present inventors have conducted intensive studies on the formulation relating to the enhancement of detergency and compactness, and as a result, have found that a specific nonionic surfactant is an essential cleaning component. As a result, the present inventors have found that a concentrated detergent composition having good cleaning properties can be obtained, and the present invention has been completed based on such findings.

That is, the concentrated liquid detergent composition according to the present invention comprises one or more polyoxyalkylene alkyl (alkenyl) ethers (component A) represented by the general formula (1) as an essential component. Liquid detergent composition, the polyoxyalkylene alkyl (alkenyl) ether has a polyoxyalkylene decyl ether content of 60% by weight, preferably 90% by weight or more and a carbon number of 1
10 to 10 polyoxyalkylene alkyl (alkylene) ethers having 4 to 22 alkyl or alkylene groups
% By weight or less. However, component (A)
Is 5 to 100% by weight, and water is 50% by weight or less.

(A) One or more polyoxyalkylene alkyl (alkenyl) ethers represented by the general formula (1) R ¹ -O- (PO) a- (EO) b-H (1) [ In the formula, R ¹ represents an alkyl group or an alkenyl group having 8 to 22 carbon atoms. PO represents an oxypropylene group, and EO
Represents an oxyethylene group. a (average addition mole number of propylene oxide) indicates 0.5 to 3.5, and b (average addition mole number of ethylene oxide) indicates 4 to 10. ]

The component (A) used in the present invention is prepared by adding propylene oxide to a predetermined aliphatic alcohol according to a conventional method, and further adding ethylene oxide according to a conventional method.

The aliphatic alcohol has 8 carbon atoms.
Straight-chain or branched-chain saturated or unsaturated aliphatic alcohols having a molecular weight of from 22 to 22, and any of natural alcohols and synthetic alcohols can be used. As a specific example,
Octanol, nonyl alcohol, decanol, undecanol, dodecanol, tetradecanol, hexadecanol, oleyl alcohol, 2-ethylhexanol and the like can be mentioned.

Regarding the component (A), a composition other than that of the present invention is not preferred because problems such as a decrease in detergency and difficulty in concentration are caused.

The average number of moles (a) of propylene oxide added to the aliphatic alcohol is 0.5 to 3.5 mol, preferably 0.5 to 2. The average number of moles (b) of ethylene oxide added is 4 to 10 moles, preferably 5 moles.
８8 mol. Use outside of these ranges is not preferred in terms of detergency and foamability.

Component (A) is obtained by adding polypropylene oxide in addition to the excellent detergency against oil, which is a characteristic of polyoxyethylene type nonionic surfactant.
The foam breaking property is enhanced. Also, even when the water content is low, no gel is formed and good fluidity is exhibited.

Specific recommended compounds include 1-2 moles of propylene oxide and 5-8 moles of ethylene oxide of decyl alcohol.

The content of the component (A) in the cleaning composition according to the present invention is 5 to 100% by weight, particularly 10% by weight.
~ 60% by weight is recommended. If it is less than 5% by weight, satisfactory cleaning properties cannot be obtained.

The water content is not more than 50% by weight, especially 10 to 40% by weight is recommended. If it exceeds 50% by weight, concentration becomes difficult.

In the cleaning composition according to the present invention, in addition to the above essential components, one or more of the following components (B)
More preferably, 0.1 to 30% by weight of a seed or more is blended.

The component (B) is classified into (B-1) and (B-2).

(B-1): a polyoxyethylene alkyl (alkenyl) ether represented by the general formula (2): R ² —O— (EO) c—H (2) wherein R ² is a carbon atom An aromatic ring having 12 to 36 alkyl, alkenyl, or alkyl substituents is
Represents an oxyethylene group. c (average number of moles of ethylene oxide) represents 8 to 60. ]

(B-2): a polyoxyethylene alkyl (alkenyl) ester represented by the general formula (3). R ³ —CO—O— (EO) d —H (3) wherein R ³ represents an alkyl group or an alkenyl group having 7 to 35 carbon atoms, and EO represents an oxyethylene group. d (the average number of moles of ethylene oxide added) represents 10 to 100. ]

As the nonionic surfactant of the component (B), a compound having a cloud point of 60 ° C. or more in a 1% by weight aqueous solution is recommended.

Further, the compounding weight ratio of component (A) to component (B) (component A / component B) is exemplified by 2 to 50, preferably 3 to 10.

The nonionic surfactant (B-1) represented by the general formula (2) is obtained by adding a predetermined amount of ethylene oxide to a predetermined aliphatic alcohol or aromatic alcohol according to a conventional method. Is a compound prepared by

Examples of the aliphatic alcohol include linear or branched saturated or unsaturated aliphatic alcohols, and either natural alcohols or synthetic alcohols can be used.

The alkyl (alkenyl or alkylphenyl) group of the alcohol component has 12 to 36 carbon atoms, preferably 12 to 18 carbon atoms. The average number of moles of ethylene oxide added to the alcohol is from 8 to 60, preferably from 8 to 18. Use outside of these ranges is not preferred in terms of detergency and foamability.

Specifically, dodecanol, tetradecanol, hexadecanol, stearyl alcohol, oleyl alcohol, sophthanol (trade name, manufactured by Nippon Shokubai Co., Ltd.), (reduced) lanolin alcohol, 2-octyldodecanol, Garbet alcohols such as decyltetradecanol and 2-hexyldecanol are exemplified.

Examples of the aromatic alcohol include octylphenol, nonylphenol, dodecylphenol and the like.

Recommended Nonionic Surfactant (B-1)
Examples thereof include poly (degree of polymerization 10) oxyethylene dodecyl ether, poly (degree of polymerization 9) oxyethylene nonylphenyl ether, and poly (degree of polymerization 14) oxyethylene oleyl ether.

The nonionic surfactant (B-2) represented by the general formula (3) is a compound prepared by adding a predetermined amount of ethylene oxide to a predetermined fatty acid according to a conventional method. is there.

The fatty acid is a linear or branched, saturated or unsaturated fatty acid, and may be a natural carboxylic acid or a synthetic carboxylic acid. Specific examples include caprylic acid, capric acid, undecanoic acid, lauric acid, tridecanoic acid, myristic acid, palmitic acid, stearic acid, isostearic acid, dimer acid, oleic acid, behenic acid, linoleic acid, linolenic acid, and the like. You.

The alkyl (alkenyl) group of the fatty acid has 7 to 35, preferably 11 to 17, carbon atoms. The average number of moles of ethylene oxide added to the fatty acid is 10 to 100, preferably 10 to 30. Use outside of these ranges is not preferred in terms of detergency and foamability.

Recommended Nonionic Surfactant (B-2)
Examples thereof include poly (degree of polymerization 30) oxyethylene oleate and poly (degree of polymerization 10) oxyethylene laurate.

Further, one or more aliphatic polyhydric alcohol ethylene oxide adducts, that is, component (C), can be blended into the concentrated liquid detergent composition of the present invention. .

Component (C): having 3 to 6 carbon atoms
An ethylene oxide adduct of a hexavalent aliphatic polyhydric alcohol. Furthermore, ethylene oxide has an average of 0.1 per hydroxyl group.
3 to 2 moles are added.

The component (C) is a compound prepared by adding a predetermined amount of ethylene oxide to an aliphatic polyhydric alcohol according to a conventional method.

Examples of the aliphatic polyhydric alcohol include glycerin, mesoerythritol, pentaerythritol,
Sorbitol and the like are exemplified, and glycerin and sorbitol are particularly recommended.

The average number of moles of ethylene oxide added per equivalent of hydroxyl group of the aliphatic polyhydric alcohol is 0.3 to 0.3.
It is 2 moles, especially 0.5 to 1.5 moles is recommended.
Outside this range, the detergency decreases.

Specific compounds that are recommended include a glycerin adduct of 1.5 to 4.5 mol of ethylene oxide (addition of 0.5 to 1.5 mol per hydroxyl group) and a sorbitol adduct of 3 to 6 mol of ethylene oxide. (Addition of 0.5 to 1.0 mol per hydroxyl group).

The content of the component (C) is 0.1 to 50% by weight, preferably 5 to 20% by weight. These may be used alone or in combination of two or more.

Further, the concentrated liquid detergent composition according to the present invention may contain an anionic surfactant component (D).

The content of the anionic surfactant (D) is, for example, 1 to 20% by weight, preferably 2 to 10% by weight.

Specific examples of the anionic surfactant (component D) include fatty acid soap, alkyl (C8-18) sulfate, poly (polymerization degree 1-6) oxyethylene alkyl (C8-18) Ether sulfate, alkyl (C 11
-13) Benzenesulfonic acid salt, alkyl (C8-
22) ether carboxylate, alkyl (C 8-8)
2) ether sulfosuccinate, alkyl (C8-22) phosphate, C13-20 α-olefin sulfonate, C10-18 paraffin sulfonate, α-sulfofatty acid (carbon (Equations 8 to 22) Methyl ester salts and the like are exemplified, and these can be used alone or in combination of two or more. In particular, alkyl (C 11
-14) sulfates (e.g., triethanolamine salts),
Poly (degree of polymerization 2-3) oxyethylene alkyl (C11-14) sulfate is recommended.

The detergent composition according to the present invention comprises a nonionic surfactant other than the components (A), (B) and (C),
An amphoteric surfactant or a cationic surfactant can be appropriately used in combination. These are for the purpose of improving washability and flexibility, and can be added in an amount of about 0.5 to 20% by weight.

Nonionic surfactants other than the components (A), (B) and (C) include polyoxypropylene-polyoxyethylene polymers, alkyl glycosides, sucrose fatty acid esters, sorbitan fatty acid esters, and polyglycerin fatty acid esters. And polyoxyethylene higher fatty acid alkanolamides, higher fatty acid alkanolamides, mono (di) alkyldi (mono) methylamine oxide, and polyoxyethylene mono (di) alkyldi (mono) methylamine oxide.

Examples of the amphoteric surfactant include betaine type (carboxybetaine and sulfobetaine), aminocarboxylic acid type, imidazoline derivative type, and derivatives thereof from polyoxyethyleneamine.

Examples of the cationic surfactant include an alkyltrimethylammonium salt, an alkyldimethylbenzalkonium salt, a dialkyldimethylammonium salt, an alkylpyridinium salt and an alkylamidoalkylammonium salt.

Further, the detergent composition according to the present invention does not refuse to blend other optional components such as enzymes, low-temperature stabilizers, builders, enzyme stabilizers and other additives. The following components which are used from the following can also be used.

As the low-temperature stabilizer, ethylene glycol, polyethylene glycol, propylene glycol,
Glycerin, trimethylolpropane, ethanol, methanol, butadiol, hexylene glycol and the like are exemplified. Usually, it is possible to add 0.5 to 10% by weight.

Examples of the enzyme include amylase, protease, lipase, cellulase and the like. Usually 0.0
It is possible to add 1 to 2% by weight.

Builders for improving the detergency include glycolic acid, citric acid, malic acid, gluconic acid,
Examples thereof include triethanolamine, diethanolamine, monoethanolamine, zeolite, and salts thereof. Usually, 0.1 to 30% by weight can be added.

Examples of other additives include fragrances, pigments, bleaching agents, bactericides, hydrotropes, chelating agents, and hand roughness inhibitors.

[0055]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for preparing the liquid detergent composition of the present invention is the same as the method for producing an ordinary liquid detergent, and is not particularly limited. Specifically, it is preferable that a predetermined surfactant is first mixed and homogenized, and that an enzyme and a fragrance are added in the final stage.

The concentrated liquid detergent composition according to the present invention comprises:
Detergents for automatic dishwashers, liquid detergents for kitchens, household cleaners for gas stoves, furniture, etc., detergents for clothing including dry cleaning, mechanical cleaners for industrial use, cleaners for vehicles such as automobiles and railways, metals The present invention can be used for a cleaning agent for parts, a hard surface cleaning agent, etc., but is not limited thereto.

[0057]

The present invention will be specifically described below with reference to examples and comparative examples. However, the present invention is not limited to this. In addition, the test method in an Example was performed as follows.

(A) Washing test (1) Clothes washing test

Detergency A detergency test was conducted using a wet contaminated cloth manufactured by the Laundry Association as a test cloth using a tergotometer. The washing conditions were a temperature of 25 ° C., a 15 minute wash, and a 2 × 2 minute rinse. The detergent at the time of the test was 1000
A one-fold dilution was used. After washing, moisture was removed with a light towel and then dried with an iron to obtain a washing cloth. The surface reflectance (%) of the white cloth, the contaminated cloth, and the cleaning cloth was measured with a surface reflectometer, and the cleaning rate (%) was determined by the following equation. Washing rate (%) = (Rw−Rs) / (Ro−Rs) · 10
Here, Rw represents the reflectance (%) of the cleaning cloth, Rs represents the reflectance (%) of the contaminated cloth, and Ro represents the reflectance (%) of the white cloth.

Rinsing property During the test with the tergot meter, foaming in the rinsing step was evaluated according to the following criteria. ：: Foam disappears within 1 minute in the first rinsing step. Δ: Foam remains in the first rinse, but disappears in the second rinse. ×: Foam remains through the first and second rinsing steps.

(2) Glass washing test A commercially available window glass sheet of 60 cm square was left outdoors for one month or more, and the stained one was used as a sample, which was cut into four pieces each of 15 cm using a sponge tape. Separated. Each compartment was washed using a commercially available dishwashing sponge, then rinsed with water and air-dried. The detergent used in the test was prepared by diluting the detergent composition 1000 times. The evaluation items were detergency and rinsability, and evaluated in three grades of ○, Δ, and ×.

(B) Appearance stability The appearance of the composition was observed at 25 ° C. and -5 ° C., and those having lost fluidity due to gelation were referred to as “gels” and those becoming cloudy as “white turbidity”. And those that were separated were denoted as "separated" and those that were transparent, uniform and fluid were denoted as "transparent".

EXAMPLES 1-5, COMPARATIVE EXAMPLES 1-5 Clothes washing tests were carried out using a detergent composition comprising a predetermined amount of the components shown in Table 1 to evaluate the detergency and defoaming, and the appearance. The stability was investigated. Table 1 shows the obtained results.

[0064]

[Table 1]

Examples 6 to 9 and Comparative Examples 6 to 9 Glass cleaning tests were carried out using a detergent composition consisting of a predetermined amount of the components shown in Table 2 to evaluate the cleaning properties and bubble elimination, and the appearance. The stability was investigated. Table 2 shows the obtained results.

[0066]

[Table 2]

[0067]

The concentrated liquid detergent composition of the present invention, despite being of a concentrated type, exhibits excellent fluidity and is stable at both high and low temperatures. The realization of concentration has made it possible to reduce the amount of detergent used each time. In addition, the detergency is superior to conventional liquid detergents, and is comparable to powder detergents. In addition, since the bubble removal is good, the rinsing time can be shortened, and it can be evaluated in terms of economic efficiency and work efficiency.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C11D 1/72-1/83 C11D 17/08 WPI / L (QUESTEL)

Claims (4)

(57) [Claims] 1. One or two kinds represented by the general formula (1)
Or more polyoxyalkylene alkyl (alkenyl)
In a liquid detergent composition containing an ether (component A) as an essential component, the polyoxyalkylene alkyl (alkenyl) ether has a polyoxyalkylene decyl ether content of 60% by weight or more and an alkyl group having 14 to 22 carbon atoms or A concentrated liquid detergent composition comprising 10% by weight or less of a polyoxyalkylene alkyl (alkylene) ether having an alkylene group. However, the content of the component (A) is 5 to 100% by weight, and water is 50% by weight.
% By weight or less. (A) One or more polyoxyalkylene alkyl (alkenyl) ethers represented by the general formula (1) R ¹ -O- (PO) a- (EO) b-H (1) R ¹ represents an alkyl group or an alkenyl group having 8 to 22 carbon atoms. PO represents an oxypropylene group, and EO
Represents an oxyethylene group. a (average addition mole number of propylene oxide) indicates 0.5 to 3.5, and b (average addition mole number of ethylene oxide) indicates 4 to 10. ] 2. The composition contains 0.1 to 30% by weight of one or more of the following components (B), and has a compounding weight ratio of the components (A) and (B) (component A / component B). ) Is 2 to 50
The concentrated liquid detergent composition according to claim 1, which is: (B-1) polyoxyethylene alkyl (alkenyl) ether represented by the general formula (2) R ² —O— (EO) c—H (2) [wherein, R ² represents alkyl having 12 to 36 carbon atoms. Represents an aromatic ring having a group, an alkenyl group or an alkyl substituent. EO represents an oxyethylene group. c shows 8-60. (B-2) Polyoxyethylene alkyl (alkenyl) ester represented by the general formula (3) R ³ —CO—O— (EO) d —H (2) [wherein, R ³ has 7 to 35 carbon atoms. Represents an alkyl group or an alkenyl group, and EO represents an oxyethylene group. d (the average number of moles of ethylene oxide added) represents 10 to 100. ] 3. One or more aliphatic polyhydric alcohol ethylene oxide adducts (component C) in an amount of 0.1 to 5%.
The concentrated liquid detergent composition according to claim 1, which contains 0% by weight. However, the aliphatic polyhydric alcohol constituting the component C is a tri- to hexa-valent alcohol having 3 to 6 carbon atoms. The average number of moles of ethylene oxide added is 0.3 to 2 moles per hydroxyl group. 4. The composition according to claim 1, which comprises 1 to 20% by weight of one or more anionic surfactants (component D).
The concentrated liquid detergent composition according to claim 1.