JPH11152497A - Detergent composition for washing car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent composition capable of providing a high detergency even if the cleaning is carried out with a low mechanical force, and hardly providing a bad effect on a constituent material of a car body such as aluminum alloy by using a specific glycol ether compound in combination with a surfactant and an alkali agent. SOLUTION: The composition comprises (A) a glycol ether compound of the formula R<1> -O-(AO)m -R<2> [R<1> is a 1-9C alkyl, an alkenyl or the like; A is a 2-4C alkylene; (m) is a number of average addition molecules and 1-20; R<2> is a 1-9C alkyl, H or the like], (B) a surfactant and (C) an alkali agent (e.g. caustic soda). The component B is preferably a nonion surfactant of the formula R<3> -O-(AO)R-H [R<3> is a 10-22C alkyl, phenyl or the like; A is a 2-4C alkylene; (p) is 1-40]. The total content of the components A and B in the weight ratio A/B of (1/8)-(8/1) is preferably 3-50 wt.%. The component C is included in the proportion of 0.5-5 wt.%. The balance thereof is preferably water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition used for cleaning various vehicles such as automobiles.

2. Description of the Related Art In recent years, car washing machines provided with a rotating nylon brush for car washing services have been widely used in gas stations and the like. However, washing by brushing tends to cause minute scratches on the painted surface, so hand washing with a non-woven brush or sponge etc.
Attention has been focused on cleaning with lower mechanical power. When a conventional detergent for a car washer is used for washing with such low mechanical power, the washing effect is not always satisfactory. On the other hand, it is known that a large amount of a strong alkaline agent that is excellent in solubilizing dirt is added in order to increase the detergency, but the discoloration of a coating film or an aluminum alloy, which is a constituent material of an automobile, is caused. was there.

[0002]

DISCLOSURE OF THE INVENTION The present invention provides a car wash detergent composition which can provide high washing power even when washed with low mechanical power and which has no adverse effect on body materials such as aluminum alloys. The purpose is to:

Means for Solving the Problems The present invention has been made based on the finding that the above problems can be efficiently solved by using a specific glycol ether compound in combination with a surfactant and an alkali agent. That is, the present invention provides (a) a glycol ether compound represented by the following general formula (I):
Provided is a car wash detergent composition comprising (b) a surfactant and (c) an alkali agent.

[0003]

Embedded image ^{R 1 -O- (AO) m -R} 2 ... (I) ( wherein, R ¹ represents an alkyl group, an alkenyl group having 1 to 9 carbon atoms, an alkylphenyl group or the following general formula (II) A group represented by

Embedded image Ph- (CH ₂ ) n − (II) (wherein Ph represents a phenyl group, and n represents an integer of 0 to 3)
A represents an alkylene group having 2 to 4 carbon atoms, m represents an average number of added moles of the alkylene oxide AO, and is a number of 1 to 20. However, as AO, the same alkylene oxide may be added alone, or two or more alkylene oxides may be added as a mixture. R ² has 1 to 1 carbon atoms
9 represents an alkyl group, an alkenyl group or hydrogen. )

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION The compound represented by the general formula (I) of the component (a) used in the present invention is a glycol monoether or diether. Examples of the glycol monoethers of the general formula (I) include ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, ethylene glycol monopropyl ether, diethylene glycol monopropyl ether, triethylene glycol monopropyl ether, and ethylene glycol monobutyl ether. , Diethylene glycol monobutyl ether,
Triethylene glycol monobutyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, ethylene glycol mono-2
-Ethylhexyl ether, diethylene glycol mono-2-ethylhexyl ether, ethylene glycol monophenyl ether, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, ethylene glycol monobenzyl ether, diethylene glycol monobenzyl ether, triethylene glycol monobenzyl ether, and the like. Can be

[0005] Examples of glycol diethers include ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether and the like. These compounds may be used alone or in combination of two or more.
In the general formula (I), R ¹ is preferably an alkyl group having 1 to 9 carbon atoms, an alkenyl group, an alkylphenyl group or a group represented by the following general formula (II) (where n = 1), Particularly, an alkyl group having 1 to 6 carbon atoms is preferable. R ² is preferably an alkyl group having 1 to 9 carbon atoms, an alkenyl group or hydrogen, and particularly preferably an alkyl group having 1 to 6 carbon atoms or hydrogen.

In general formula (I), those having a total carbon number of the terminal ether residue (total carbon number of R ¹ + R ² ) of 4 or more are preferable, and those having 4 to 8 are particularly preferable. Also, AO
Is preferably formed by addition of ethylene oxide, propylene oxide, butylene oxide or a mixture thereof, and the number of moles n of addition is preferably from 1 to 4. These components (a) are contained in the composition in an amount of 1 to 80% by weight.
(Hereinafter abbreviated as%), preferably 2 to 50%, more preferably 3 to 20%.

As the surfactant of the component (b), non-ionic
Surfactant, anionic surfactant, cationic field
Surfactants, amphoteric surfactants or a mixture of these
Can be used, but especially nonionic surfactants
And / or anionic surfactants are preferred. Non-ionic
The following are exemplified as the nonionic surfactant. here
p represents the average number of moles of the alkylene oxide added. Al
Ethylene oxide, propylene
Oxide, butylene oxide or their adducts
Used. (1) polyoxyalkylene (p = 1 to 40) alkyl or
Is alkenyl (C_Ten~ C _{twenty two}) Ether, preferably p =
3-40, (2) polyoxyalkylene (p = 1-40)
Alkyl or alkenyl (C_Ten~ C _{twenty two}) Phenylate
, Preferably p = 3-40, (3) polyoxyalkylene
(P = 0.5-40) alkyl or alkenyl (C_Ten~
C_{twenty two}) Amines, preferably p = 2-20, (4) polyoxo
Sialkylene (p = 0.5-50) alkyl or alkenyl
Le (C_Ten~ C_{twenty two}) Amides, preferably p = 3-50,
More preferably, p = 2 to 20, (5) ethylene oxide / p
Propylene oxide block adduct (pluronic type interface
Activator),

[0008] Among the above nonionic surfactants, the nonionic surfactant represented by the following general formula (III) is most suitable for the present invention.

Embedded image R ³ —O— (AO) p—H (III) (wherein R ³ has 10 to 22 carbon atoms (preferably 12 to
18) an alkyl group, alkenyl group, phenyl group or alkylphenyl group, A represents an alkylene group having 2 to 4 carbon atoms, p represents an average addition mole number of the alkylene oxide AO, and a number of 1 to 40 (preferably 3 to 30). However, the same alkylene oxide may be added alone or two or more alkylene oxides may be mixed and added.) These surfactants may be used alone or in combination of two or more. They may be appropriately combined.

[0009] Examples of the anionic surfactant include the following. (1) Linear alkylbenzene sulfonic acid (salt) having an alkyl group having an average carbon number of 8 to 16 (2) Alpha olefin sulfonic acid (salt) having an average carbon number of 10 to 20 (3) Carbon number of the alkyl group or alkenyl group Is 4-10
(4) Sulfonic acid (salt) of fatty acid lower alkyl ester represented by formula (IV) or di-salt compound of fatty acid sulfonated product

[0010]

Embedded image R ⁴ —CH (SO ₃ Z) COOY (IV) (wherein, R ⁴ is an alkyl group or alkenyl group having 8 to 20 carbon atoms, Y is an alkyl group having 1 to 3 carbon atoms or (5) Alkyl or alkenyl sulfate (salt) having an average carbon number of 10 to 20, sulfonic acid (salt) (6) Linear or branched chain having an average carbon number of 10 to 20 Alkyl ether sulfates (salts) having an alkyl or alkenyl group of 0.5 to 8 moles on average with ethylene oxide (7) saturated or unsaturated fatty acids (salts) having an average of 10 to 22 carbon atoms As a counter ion in the surfactant, an alkali metal such as sodium or potassium, or an alkanolamine salt such as monoethanolamine, diethanolamine or triethanolamine is used.

Of the above anionic surfactants, (1), (2) and (6) are particularly preferred. These surfactants may be used alone or in combination of two or more. These components (b) are present in the composition in an amount of from 1 to
Preferably, the content is 80%, more preferably 3 to 5%.
0%.

The alkaline agent of the component (c) includes, for example, sodium hydroxide, sodium silicate, sodium phosphate, sodium carbonate and other salts, ammonia, primary, secondary and tertiary salts.
Lower alkylamine, cyclohexylamine, mono-, di- or triethanolamine, mono-, di-
Alternatively, water-soluble alkanolamines such as tripropanolamine and derivatives thereof, N-lower alkylmorpholine and the like are used. These alkali agents may be used alone or in combination of two or more.

In the present invention, the above (a), (b), (c)
The mixing ratio of the components can be arbitrarily set, but it is preferable that the weight ratio of the components (a) and (b) is 1/10 to 10/1, more preferably 1/8 to 8/1. Yes, it is preferably 1 to 80% in total, and more preferably 3%
It is preferred that the content be contained in an amount of up to 50%. The component (c) is 0.1.
-10%, more preferably 0.5-5%
% And water as the remaining component. In particular, the pH of the composition of the present invention is preferably 10 or more, more preferably 12 or more.
It is preferable to make the above. In the present invention, it is preferably in the form of an aqueous solution in which the components (a) to (c) are dissolved in water,
Contains 30-90% of water of the composition and has a viscosity (25) C of 5
Preferably it is ~ 200 cp. In the cleaning composition of the present invention, in addition to the above components (a), (b), and (c), a rust preventive may be added to improve the rust preventive force on painted surfaces and the like. Further, a sequestering agent such as sodium edetate and sodium tripolyphosphate may be blended in order to further improve the cleaning effect. These sequestering agents are preferably contained in the composition in an amount of 0.1 to 20%, more preferably 0.5 to 10%.

Further, glycols such as ethylene glycol and propylene glycol, alcohols such as ethanol and isopropanol, toluene sulfonate, xylene sulfonate and the like may be blended as hydrotropes to maintain the liquid stability. . Of these, glycols are preferred. These hydrotropes are preferably contained in the composition in an amount of 1 to 15%, more preferably 2 to 10%. When a car body such as an automobile is washed with the car wash detergent composition of the present invention, (a) to
(C) The total of the components is 0.01 to 20%, preferably 0.03 to 10%, more preferably
It is preferable to use it after diluting it to 0.05 to 5%.

[0015]

According to the present invention, there is provided a detergent composition for car washing which can provide high washing power even when washing with low mechanical power and which does not adversely affect the vehicle body constituting materials such as aluminum alloys. Therefore, the detergent composition for car washing of the present invention can be used in a car washing machine equipped with a rotating nylon brush, for example, a portal type car washing machine, and can be made of a soft material such as a nonwoven fabric instead of the nylon brush. The present invention can be suitably used in a so-called low-mechanical-power car wash using a brush. Also, excellent washing power can be obtained in hand washing with a sponge or the like. Next, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

[0016]

EXAMPLES Car wash compositions having the compositions shown in Table 1 were prepared, and their performance was evaluated by the following methods. In addition, the compounding amount was shown by weight%, and the shortage was adjusted with ion-exchanged water, and the whole was set to 100%. An automobile having a detergency white painted surface was waxed with a solid wax and used for two months to prepare a test vehicle. The hood of the test vehicle was divided into 24 sections, and the detergency was evaluated using a 0.25% aqueous solution of the detergent shown in Table 1 in each section. In the washing test, after washing with water, apply 20 ml of detergent with hand spray, then gently rub it 5 times with a car wash sponge, rinse with water,
It was performed in a process of drying. Cleaning rate is Minolta Co., Ltd.
The reflectance before and after washing was measured using a colorimeter CR-300, and calculated by the following equation. A cleaning rate of 80% or more passes. Cleaning rate (%) = 100 × (reflectance after cleaning−reflectance before cleaning) / (reflectance after complete cleaning−reflectance before cleaning)

Table 1 shows the stability of aluminum alloy (JIS A 5083, 60 × 10 × 0.25 mm).
The appearance after immersion in a 2% aqueous solution of the cleaning agent at 50 ° C. for 5 days was visually determined. ○ is a pass. ：: no change △: slight whitening ×: completely whitening

[0018]

[Table 1] Table-1 1 2 3 4 5 6 7 8 * 9 * 10 * C ₄ H ₉ 0 (EO) ₂ H 8 C ₄ H ₉ 0 (EO) ₁ (PO) ₂ H * a 8 6 2 8 8 BzO (EO) _{1 H * b 8 8 C 2 H} 5 0 (EO) 2 C 2 H 5 8 C 12 - 14 alcohol _{(EO) 9 H 24 20 6} 2 C 12 - 14 secondary alcohol _{(EO) 5 H 8 8 8} C 12 - ₁₄ secondary alcohol _{(EO) 15 H 16 24 16} 16 polyoxyethylene alkyl 2 10 12 14 sodium sulfate (p = 3) * c sodium hydroxide 1.5 sodium metasilicate 2 1 metasilicate potassium 1.5 1.5 1.5 1 1 diethanolamine 1 Sodium ethylenediaminetetraacetate 1 1 1 1 1 1 1 1 1 1 Propylene glycol 5 5 5 5 5 0 0 5 5 5 (Evaluation result) Cleaning rate (%) 90 91 85 83 85 84 82 67 31 69 Aluminum alloy stability ○ ○ ○ ○ ○ ○ ○ ○中 In the table, Nos. 1 to 7 are products of the present invention, and Nos. * a: EO represents ethylene oxide, PO represents propylene oxide, and EO and PO are block additions. * b: Bz represents a benzyl group. * c: The average carbon number of the alkyl group is 12.5.

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code FI C11D 3:04 3:30) (72) Kumi Sasaki, inventor Kumi Sasaki 1-3-7, Honjo, Sumida-ku, Tokyo Inside Lion Corporation (72) Inventor Kenichiro Takase 2-12-13 Shibaura, Minato-ku, Tokyo Inside Tatsuno Mechatronics Co., Ltd.

Claims (1)

[Claims] 1. A car wash detergent composition comprising (a) a glycol ether compound represented by the following general formula (I), (b) a surfactant, and (c) an alkali agent. R ¹ —O— (AO) m —R ² (I) wherein R ¹ is an alkyl group, alkenyl group, alkylphenyl group having 1 to 9 carbon atoms or the following general formula (II) A group represented by the following formula: Ph- (CH ₂ ) n − (II) (wherein Ph represents a phenyl group, and n represents an integer of 0 to 3)
A represents an alkylene group having 2 to 4 carbon atoms, m represents an average number of added moles of the alkylene oxide AO, and is a number of 1 to 20. However, as AO, the same alkylene oxide may be added alone, or two or more alkylene oxides may be added as a mixture. R ² has 1 to 1 carbon atoms
9 represents an alkyl group, an alkenyl group or hydrogen. )