JPH02279796A - Detergent composition - Google Patents

Abstract

PURPOSE:To obtain the subject compsn. with excellent permeating force and detergency by mixing a nonionic surface active agent with a specified dialkylamine oxide at a specified ratio. CONSTITUTION:A nonionic surface active agent (e.g. polyoxyethylene dodecyl ether) and a dialkylamine oxide of the formula [wherein R1 to 2 are each a 6 to 18C alkyl or alkenyl; R3 is CH2CH2, CH2CH(CH3), CH2CH2CH2; R4 is a 1 to 4C alkyl, hydroxyalkyl, benzyl or H; (n) is 1 to 20] are mixed together at a wt. ratio of 0.01 to 100.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a detergent composition containing a nonionic surfactant and a specific dialkylamine oxide, which has excellent penetration power and extremely good detergency. It is.

[Prior art] The basic properties of surfactants include emulsification, solubilization, dispersion, foaming, and penetration. It is thought that detergency is developed as a comprehensive effect of these actions.

Among these effects, the penetrating effect is thought to make it easier for the fibers to be wetted with a cleaning liquid when cleaning fibers, etc., and to make it easier for the cleaning ingredients to act on dirt adhering between the fibers. In addition, when cleaning hard surfaces such as tableware and cooking utensils, it is believed that it not only improves the wettability of the object to be cleaned and makes it easier to remove oily stains, but also suppresses the re-adhesion of stains to the object being cleaned. It will be done.

[Problem to be solved by the invention]

Sulfosuccinic acid is a surfactant with strong penetrating action.
-2-Ethylhexyl ester sodium salt (product name: Aerosol OT) is famous, but since this sulfosuccinic acid di-2-ethylhexyl ester sodium salt is an anionic surfactant, it is affected by the hardness components in the water used. Ca salt, which is easily susceptible and poorly soluble in water with high hardness,
Because it produces Mg salts, it cannot exhibit strong penetrating action.

Furthermore, since it has an ester bond in its molecule, it has a problem of poor alkali resistance, and there is a risk that it will decompose if used in combination with an alkali builder commonly used in heavy-duty laundry detergents. Furthermore, when this is used in liquid cleaning agents such as dishwashing detergents, it has the disadvantage that it has low solubility in water and tends to form liquid crystals, making it difficult to obtain a highly concentrated liquid composition. For this reason, it has not been possible to utilize it as a cleaning base, even though its strong penetrating action can be expected to contribute to cleaning power.

[Means to solve the problem]

Under these circumstances, the present inventors conducted intensive research to develop a cleaning base with excellent permeability, and as a result, a specific alkylamine oxide has a strong permeability comparable to that of sulfosuccinic acid di-2-ethylhexyl ester sodium salt. The present inventors have discovered that they exhibit good detergency when combined with a specific nonionic surfactant, and have completed the present invention.

That is, the present invention contains (a) a nonionic surfactant and (b) a dialkylamine oxide represented by the general formula (I), and the (a) / (b) weight ratio is 0.01 to
The present invention provides a cleaning composition characterized in that:

p.

Φ (In the formula, R+ and Rt each represent an alkyl group or an alkenyl group having 6 to 18 carbon atoms, and R1 is -CHzCHz
-1-CHzCH(CH+)-1-CHtCHzCH*
-, or a mixture thereof, R4 has 1 to 4 carbon atoms
represents an alkyl group, hydroxyalkyl group, benzyl group, or hydrogen atom, and n is 1 to 20, preferably 2 to 1
0, particularly preferably a number from 2 to 5. ) Any nonionic surfactant as component (a) used in the present invention may be used as long as it has good compatibility with component (b) and economical efficiency (although there are no particular limitations). Examples of suitable components as component (a) are shown below.

(I) Polyoxyalkylene alkylphenyl ether represented by general formula (n).

In the formula, R2 represents an alkyl group or alkenyl group having 10 to 18 carbon atoms, R3 is the same as in general formula (I), and m is 3
Represents the number ~40.

(2) Polyoxyalkylene alkyl ether represented by general formula (II[).

R&0(R30), H(III) In the formula, R1 represents an alkyl group or alkenyl group having 10 to 18 carbon atoms, R3 is the same as in general formula (I), and m represents a number from 3 to 40.

(3) Higher fatty acid alkanolamide represented by general formula (IV) or (V).

In the formula, R1 represents an alkyl group or an alkenyl group having 7 to 23 carbon atoms.

(4) Alkyl glycoside represented by general formula (Vl).

Rm(OR*)xG, (V
l) In the formula, R1 is a straight chain or branched chain having 8 to 18 carbon atoms.
represents an alkyl group, alkenyl group or alkylphenyl group, R9 represents an alkylene group having 2 to 4 carbon atoms, and G
is a residue derived from a reducing sugar having 5 to 6 carbon atoms.

The average value of X is O~5, preferably O~2,
The average value of y is 1 to 10, preferably 1.1 to 3. Examples of reducing sugars having 5 to 6 carbon atoms include glucose, galactose, xylose, mannose, lyxose, arabinose, maltose, xylobiose, isomaltose, cellobiose, gentibiose, lactose, sucrose, nigerose, turanose, raffinose, gentibiose, melezitose, etc. Can be mentioned.

(5) The molecular weight of polypropylene glycol is 1000~
4000, the average number of added moles of polyethylene oxide is 1
0 to 60 polypropylene glycol/polyethylene oxide adduct.

Although dialkylamine oxide, component Φ) used in the present invention, shows high penetrating power even when used alone, it has low solubility in water and cannot be said to have sufficient detergency when used alone. In order to improve solubility, it is necessary that the weight ratio (a)/(c) is 0.01 or more.

Dialkylamine oxide exhibits a strong penetrating action and improves detergency even when contained in a small amount of a detergent composition containing component (a) as the main component, but when the (a)/(b) weight ratio is less than 100, If it exceeds this, the effect will be significantly reduced and this is not preferable. Therefore, the (a) / (b) weight ratio is 0°0
It needs to be within the range of 1 to 100, preferably within the range of o, i to 10.

The cleaning composition of the present invention can take the form of liquid, paste, solid, powder, etc., but from the viewpoint of ease of use, it is preferably in liquid or powder form.

The cleaning composition of the present invention is mainly used for cleaning dishes, cooking utensils, etc., and for cleaning clothes, but it can also be used for cleaning bathtubs, bathrooms, etc.
It can also be applied as a cleaning agent for areas around the house such as floors, walls, window glass, furniture, toilet bowls, etc., and the use is not particularly limited.

In addition to the above-mentioned essential components, the cleaning composition of the present invention may contain various components as necessary within a range that does not impair the desired performance. For example, as a surfactant, linear alkylbenzene sulfone Anionic surfactants such as acid salts, polyoxyethylene alkyl ether sulfates, alkyl sulfates, α-olefin sulfonates, alkanesulfonates, ατ sulfo fatty acid esters; Ampholytic surfactants such as betaine and sulfobetaine can be mentioned.

In addition, solubilizing agents used in liquid cleaning agents include lower alcohols such as ethanol and isopropanol; ethylene glycol, propylene glycol, glycerin,
Polyhydric alcohols such as sorbitol; aromatic sulfonates such as p-)luenesulfonate and m-xylenesulfonate. Furthermore, as bilgu, sodium sulfate, condensed phosphate, synthetic zeolite, ethylenediaminetetraacetic acid (EDT^), nitrilotriacetic acid (NTA
), inorganic/organic alkaline agents such as silicates, carbonates, caustic soda, ethanolamine, etc.; recontamination preventive agents such as carboxymethyl cellulose, polyethylene glycol, etc.

In addition, enzymes, abrasives, fluorescent dyes, colorants, preservatives,
Flavors and the like can be added depending on the purpose.

〔Example〕

The present invention will be described in detail below with reference to Examples, but the present invention is not limited to these Examples.

Example 1 Various compositions shown in Table 1 were prepared, and their penetrating power and detergency were examined by the following methods.

Penetration test (I)〉 Preparation of test piece: A model stain made by mixing beef tallow and rapeseed oil at a weight ratio of 9/1 was heated to above the melting point (approximately 50°C), and a stainless steel plate ( I5CllX20C11). At this time, the thickness of the model stain on the applied surface is 20°C when the plate is cooled to 25°C and the oil solidifies.
It was set to be ±3-.

An oscilloscope was connected to the test piece prepared as above as shown in Figure 1, and an aqueous detergent solution was dropped for 0.051 d onto the area marked 3 in Figure 1. The time taken to reach this point was measured under the following conditions.

I Main detergent concentration? 0.15% by weight Hardness of water used: 4°DH Temperature: 25°C Detergent power test (I)> Based on JIS 3370-1979 4.9 "Detergent power test method for kitchen synthetic detergents", Measurement was performed under the following conditions.

Detergent concentration: 0.15% by weight Hardness of water used: 4°DH Temperature: 25°C Cleaning time: 810 minutes Composition of model soil: Beef tallow/rapeseed oil - 9/1 (weight ratio) Judgment of cleaning power: The cleaning rate was calculated from the change in weight of the object to be cleaned (slide glass) before and after cleaning.

These results are shown in Table-1.

Example 2 Compositions shown in Table 2 were prepared, and the penetration power and detergency of each composition was determined by the following method.

The results are shown in Table 4.

Table 2 As dialkylamine oxides, compounds represented by the monocatalytic formula (I) in which R3-R4 and n are shown in Table 4 were used.

<Penetration power test (2)> Pour 100 d of detergent aqueous solution into a 100 d beaker, gently float unrefined dry felt of 2CIlX2C11 on the water surface, and calculate the time required for the felt to settle to the bottom of the beaker as follows. Measured under the following conditions.

Detergent concentration: O, tS wt% Hardness of water used: 4°OH Temperature: 25 °C Cleaning power test (2)> Artificial dirt with the composition shown in Table 3 was attached to detergent aqueous solution 11. Add 12 artificially contaminated cloths of IOcIIXIOcIm, add uncontaminated cloths of the same size so that the bath ratio is 1/60, and heat at 1100 rpm in a turbotometer.
Washing was carried out under the following conditions.

Dishwashing detergent concentration: 0.15% by weight Hardness of water used: 4'DH Temperature: 25 °C Washing time: 10 minutes Rinse: 5 minutes with 4''DH hard water Composition of artificial stains on artificially contaminated cloth : Table-3 Judgment of detergency; The detergency was determined by measuring the reflectance of the original cloth before contamination (carbon black was mixed in as an indicator by a conventional method) and the contaminated cloth before and after washing using a self-recording colorimeter (manufactured by Shimadzu Corporation). The cleaning rate was calculated using the following formula. Table 4 shows the average value measured for 12 contaminated cloths.

Cleaning rate (%) - Example 3 Detergent (A) (comparative product) and detergent (B) (inventive product) shown in Table 5 were prepared and their penetrating power and detergent power were examined. The evaluation of the penetration power was performed in the same manner as the penetration power test (2).

The results are shown in Table 5.

Cleaning power test (3)〉 Preparation of contaminated cloth: 9CI of cotton/Tetoron blend white cloth! It was cut into 1x30c11 pieces, sewn onto the collar of a dress shirt, and made to be worn by an adult male for 3 days. After wearing, store contaminated cloth at 25°C, 265%R.
It was left in room H for one month. After leaving it for a while, choose a cloth that has the same degree of dirt and is symmetrical about the center line.
The cloth was cut in half at the symmetrical point of the stain and subjected to measurement.

Cleaning of contaminated cloth: A set of 15 contaminated cloths prepared as above was prepared.
50 mouths x 50C11 cotton cloth was sewn, a cleaning agent composition for evaluation of 45- was uniformly applied to the contaminated cloth, and after being left for 10 minutes, the total weight including the cotton underwear was 1 kg, and the washing machine manufactured by Toshiba "
Transfer to "Ginga" and add tap water to make the total volume 30! as water temperature 2
Wash at 5°C for 10 minutes with strong inversion, then rinse with water for 5 minutes for 3 times.
After washing several times, it was dried and the detergency was evaluated.

Determination of detergency: Determination of detergency was performed by visual comparison of semi-cut fabrics washed with two types of detergents (A) and (B). The evaluation was performed based on a standard contaminated cloth, which was ranked on a 10-level scale representing the degree of soiling.

The difference between 0 points and 0 points, which expresses the detergent power by the detergent power score (detergent power index) of detergent (B) when the detergent power of detergent (A) is 100, is considered to be a significant difference if it is 0.5 or more.

table FIG.

Stainless steel plate beef tallow-rapeseed oil coating film test Aqueous solution droplet electrode oscilloscope Note) *2 Dioctyl polyoxyethylene (5) amine oxide CsH+v Cself Ill? N-(CToCH□0), H↓ 4,

[Brief explanation of drawings]

Claims (1)

[Claims] 1. Contains (a) a nonionic surfactant, and (b) a dialkylamine oxide represented by the following general formula (I), the weight of component (a) and component (b) A cleaning composition characterized in that the ratio (a)/(b) is 0.01 to 100. ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) (In the formula, R_1 and R_2 each represent an alkyl group or an alkenyl group having 6 to 18 carbon atoms, and R_3 is -CH_
2CH_2-, -CH_2CH(CH_3)-, -CH
_2CH_2CH_2-, or a mixture thereof, R_4 represents an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group, a benzyl group, or a hydrogen atom, and n represents a number of 1 to 20. ) 2(a) The nonionic surfactant is one selected from the group consisting of polyoxyalkylene alkyl ether, polyoxyalkylene alkylphenyl ether, higher fatty acid alkanolamide, alkyl glycoside, and polypropylene glycol polyethylene oxide adduct, or The cleaning composition according to claim 1, which comprises two or more types.