JP2002053755A - Water-based wax agent composition and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-based wax agent composition excellent in water- repellency and storage stability. SOLUTION: The water-based wax agent composition comprises 3-15 mass% of (A) a solid wax, 1-15 mass% of (B) a liquid wax agent, 2-7 mass% of (C) a cationic surfactant, 12-30 mass% of (D) a polyhydric alcohol and 1-5 mass% of (E) an alkyl amine acetate, and the compounding ratio of the component (A) to the component <D) ((A)/(D)) is 0.1-0.5 and the compounding ratio of the component (B) to the component (D) ((B)/(D)) is 0.05-0.8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aqueous wax composition and a method for producing the same, and more particularly, to a method for imparting gloss and luster to a painted surface of an automobile, excellent water repellency, and storage stability, especially at low temperatures. The present invention relates to an aqueous wax composition having excellent properties. The aqueous wax composition of the present invention is particularly suitable as a wax composition for a car washer.

[0002]

2. Description of the Related Art
A waxing agent for a car washer is used in a waxing step in a car washing process, that is, in each step of washing → rinsing → water-based wax → drying, and has a function of imparting water repellency and luster to an automobile. Usually, a water-soluble wax agent for a car washer is used, and is composed of a solid wax, a liquid wax, a cationic surfactant, a solvent, water and the like (autochemical:
Edited by Japan Auto Chemical Industry Association (1991), p.184, table 11.3). Further, as a wax composition for car washes, for example, JP-A 1-225681, JP-A 1-225682, JP-A 7-23
No. 8261, JP-A-11-80673, JP-A-11-152449
And Japanese Patent Application Laid-Open No. 12-71947 are known. However, most of the conventionally used wax agents are difficult to manufacture due to a marked increase in viscosity when the liquid undergoes a phase change from W / O type to O / W type during manufacture,
When separated for long-term storage or frozen when stored at low temperature in winter, there is a problem in that it is separated without thawing even after thawing, and the performance is significantly reduced.

Accordingly, an object of the present invention is to provide an aqueous wax composition which is excellent in water repellency and storage stability, particularly stability at low temperatures, and a method for producing the same.

[0004]

The present inventors have made intensive studies and have found that (A) solid wax, (B) liquid wax, (C) cationic surfactant, (D) polyhydric alcohol and (E) It has been found that the above object can be achieved by adjusting the mixing ratio of the above components in the aqueous wax composition containing the alkylamine acetate. The present invention has been made based on the above findings, and (A) solid wax: 3 to 15% by mass, (B) liquid wax: 1 to
Aqueous wax containing 15% by mass, (C) cationic surfactant: 2 to 7% by mass, (D) polyhydric alcohol: 12 to 30% by mass, and (E) alkylamine acetate: 1 to 5% by mass Agent composition, wherein the mixing ratio ((A) / (D)) of component (A) and component (D) is 0.1 to
0.5, wherein the blending ratio of the component (B) and the component (D) ((B) / (D)) is 0.05 to 0.8. is there. Further, the present invention provides (A) solid wax: 3 to 15 parts by mass, (B) liquid wax: 1 to 15 parts by mass, (C) cationic surfactant: 2 to 7 parts by mass, and (D) polyvalent. Alcohol: 12-3
0 parts by mass were suspended in water to obtain a suspension.
Dissolve uniformly at the above temperature to obtain a wax solution, 70 ° C
Water and (E) alkylamine acetate at the above temperatures:
It is intended to provide a method for producing an aqueous wax composition, wherein 5 parts by mass are added to the wax solution.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION First, the wax composition of the present invention will be described in detail. The wax composition of the present invention,
It contains the following components (A), (B), (C), (D) and (E). (A) solid wax (B) liquid wax agent, (C) cationic surfactant, (D) polyhydric alcohol, (E) alkylamine acetate. First, the component (A) will be described. The solid wax of the component (A) refers to a wax that is solid at room temperature, and includes, for example, animal waxes such as beeswax; plant waxes such as carnauba wax; mineral waxes such as montan wax; and petroleum waxes such as paraffin wax. Typical examples include natural waxes and synthetic waxes. In the present invention, the above solid waxes may be used alone or in combination of two or more. Among the above, a combination of carnauba wax and paraffin wax is particularly preferable in terms of solubility, stability and water repellency. The content of the solid wax of the component (A) in the aqueous wax composition of the present invention is 3 to 15% by mass, and preferably 5 to 10% by mass. When the content of the solid wax as the component (A) is less than 3% by mass, water repellency is poor, and when it exceeds 15% by mass, solubility in water is poor.

[0006] The liquid wax agent of the component (B) refers to a wax which is liquid at room temperature, and examples thereof include liquid paraffin, α-olefin, n-octane and n-decane. In the present invention, the above liquid wax agents may be used alone or in combination of two or more. The content of the liquid wax agent of the component (B) in the aqueous wax agent composition of the present invention is 1 to 15% by mass.
And preferably 2 to 10% by mass. The above (B)
If the content of the liquid wax agent as the component is less than 1% by mass, the solubility of the solid wax as the component (A) is reduced, and the water repellency is poor. If the amount exceeds 15% by mass, the solubility of the liquid wax agent is reduced, and the aqueous wax agent composition becomes cloudy.

The cationic surfactant of component (C) includes, for example, di-long chain alkyl ammonium salts such as dilauryl dimethyl ammonium chloride and distearyl dimethyl ammonium chloride, and monoalkyl trimethyl ammonium salts such as monolauryl trimethyl ammonium chloride. And the like. In the present invention,
The cationic surfactant may be used alone, or 2
A combination of more than one species may be used. Among them, di-long-chain alkyldimethylammonium salts are particularly preferably used in view of solubility and stability. The content of the cationic surfactant of the component (C) in the aqueous wax composition of the present invention is 2 to 7% by mass, preferably 4 to 6% by mass.
It is. When the content of the cationic surfactant of the component (C) is less than 2% by mass, the solubility of the solid wax is reduced, causing problems such as turbid appearance. When the content exceeds 7% by mass, the aqueous wax composition is used. Has a remarkably high viscosity, making production difficult.

Examples of the polyhydric alcohol as the component (D) include ethylene glycol, propylene glycol, glycerin, diethylene glycol and triethylene glycol. In the present invention, the above-mentioned polyhydric alcohols may be used alone or in combination of two or more. Among the above-mentioned polyhydric alcohols, ethylene glycol, propylene glycol and glycerin are preferable, and ethylene glycol having excellent low-temperature stability and solid wax solubility is particularly preferable. The content of the polyhydric alcohol as the component (D) in the aqueous wax composition of the present invention is 12 to 30% by mass, and preferably 15 to 20% by mass. When the content of the polyhydric alcohol of the component (D) is less than 12% by mass, the dissolving power of the solid wax decreases, the viscosity increases, and the production becomes difficult.
If it exceeds 0% by mass, the stability at room temperature and the water repellency decrease.

The alkylamine acetate of the component (E) is represented by the following general formula. [RNH3] ⁺ [CH ₃ COO] ^- (wherein, R is an alkyl group having 12 to 18 carbon atoms.) Examples of the alkylamine acetate of the component (E) include stearylamine acetate. Can be In the present invention, the above-mentioned alkylamine acetates may be used alone or in combination of two or more.
Among the above, coconut amine acetate and stearylamine acetate are preferably used because of the excellent solubility and stability of the solid wax. The content of the alkylamine acetate of the component (E) in the aqueous wax composition of the present invention is 1 to 5% by mass, preferably 1 to 5% by mass.
３3% by mass. If the content of the alkylamine acetate of the above-mentioned component (E) is less than 1% by mass, problems such as turbid appearance are caused. If it exceeds 5% by mass, problems such as poor long-term storage stability occur.

The aqueous wax composition of the present invention is obtained by dissolving the above components (A), (B), (C), (D) and (E) in water. The water used is not particularly limited, and purified water, distilled water, tap water, and the like can be used. In addition to the components (A), (B), (C), (D) and (E), the aqueous wax composition of the present invention further comprises an alcohol solvent, a pigment, a rust inhibitor, and a viscosity modifier. ,
Additives such as fragrances, preservatives, antibacterial agents and ultraviolet absorbers can be added. When the above additive is contained, the content is preferably 0.01 to 1.0% by mass based on the total amount of the aqueous wax composition.

In the aqueous wax composition of the present invention, the mixing ratio ((A) / (D)) of the solid wax (A) to the polyhydric alcohol (D) is 0.1 to 0.1%.
0.5, preferably 0.2 to 0.4.
When (A) / (D) is less than 0.1, the aqueous wax composition becomes cloudy or has poor water repellency. If it exceeds 0.5, the aqueous wax composition thickens, making it difficult to produce, and the storage stability is poor. In the aqueous wax composition of the present invention, the mixing ratio of the liquid wax composition of the component (B) and the polyhydric alcohol of the component (D) ((B) /
(D)) is 0.05 to 0.8, preferably 0.1 to 0.8.
０．５0.5. If (B) / (D) is less than 0.05, the water-repellent performance is reduced, and if it exceeds 0.8, the wax agent becomes cloudy without dissolving in water.

The method for producing the aqueous wax composition of the present invention is not particularly limited, but can preferably be produced by the method for producing the aqueous wax composition of the present invention described below. The aqueous wax agent composition of the present invention imparts gloss and luster to the painted surface of an automobile, has excellent water repellency, storage stability,
It is particularly excellent in low-temperature stability, and is particularly suitable as a wax composition for a car washer.

Next, the method for producing the aqueous wax composition of the present invention will be described in detail. The method for producing the aqueous wax composition of the present invention comprises: (A) solid wax: 3 to 15 parts by mass, (B) liquid wax: 1 to 15 parts by mass, (C) cationic surfactant: 2 to 7 parts by mass. Parts and (D) a polyhydric alcohol: 12 to 30 parts by mass are suspended in water to obtain a suspension, and the suspension is uniformly dissolved at a temperature of 80 ° C or higher to obtain a wax solution. Water and (E) alkylamine acetate: 1 to 5 parts by weight are added to the wax solution. The method for producing the aqueous wax composition of the present invention comprises: (A) solid wax: 3 to 15 parts by mass;
Liquid wax agent: 1 to 15 parts by mass, (C) cationic surfactant: 2 to 7 parts by mass, and (D) polyhydric alcohol: 12
To 30 parts by weight of the suspension were suspended in water to obtain a suspension.
Dissolve uniformly at a temperature of 0 ° C or higher. The solid wax of the component (A), the liquid wax of the component (B), the cationic surfactant of the component (C) and the polyhydric alcohol of the component (D) are used in the aqueous wax composition of the present invention described above. The ones described can be used. In addition, the usage amounts thereof are as described above. The water is
Tap water, distilled water, purified water, and the like can be used. The amount of water used initially is preferably from 0 to 25% by mass of all components, more preferably from 10 to 20% by mass. If the amount of water used exceeds 25% by mass, the solubility of the wax may decrease.

In the method for producing an aqueous wax composition of the present invention, the mixing ratio of the solid wax (A) and the polyhydric alcohol (D) ((A) /
(D)) is preferably from 0.1 to 0.5.
More preferably, it is 2 to 0.4. In the method for producing the aqueous wax composition of the present invention, the blending ratio ((B) / (D)) of the liquid wax of the component (B) and the polyhydric alcohol of the component (D) is 0.05. ~ 0.8
Is preferably, and more preferably 0.1 to 0.5.

In the method for producing the aqueous wax composition of the present invention, the suspension is uniformly dissolved at a temperature of 80 ° C. or higher. When the temperature is lower than 80 ° C., the wax component is not sufficiently dissolved, the resulting aqueous wax composition becomes cloudy, and the water repellency is poor. The upper limit of the temperature is 100 ° C.
It is. If the temperature exceeds 100 ° C., the water-based wax composition obtained by evaporation of water may become cloudy. After the suspension is dissolved, warm water at a temperature of 70 ° C. or higher is gradually added dropwise. Further, it is preferable that the heating of the suspension is carried out while stirring, and in this case, stirring is not particularly required, and a stirrer having a high stirring power is not required.
A stirrer such as a paddle blade or propeller blade for low viscosity is sufficient. Next, 1 to 5 parts by mass of the alkylamine acetate of the component (E) is added to the above solution, followed by cooling to obtain the aqueous wax composition of the present invention. As the component (E), those described in the above-described aqueous wax composition of the present invention can be used. The amount used is also as described above. ADVANTAGE OF THE INVENTION According to the manufacturing method of the aqueous wax composition of this invention, the glossiness and gloss are given to the coating surface of a motor vehicle, the water repellency is excellent, and the aqueous wax composition excellent in storage stability, especially excellent in low-temperature stability is easily obtained. be able to.

[0016]

The present invention will be described in more detail with reference to the following examples. Example 1 Water: 100 g, ethylene glycol: 200 g, carnauba wax: 30 g, paraffin wax (melting point: 46
° C): 60 g and α-olefin (Dialen 168:
30 g was weighed in a 2 L beaker equipped with a stirrer and heated to a temperature of 85 ° C. while stirring at 240 rpm to dissolve carnauba wax (solid wax). Next, 60 g of a di-long-chain alkyldimethylammonium salt (distamine aryldimethylammonium salt Cotamine 86: manufactured by Kao Corporation) was added and dissolved in the solution in which carnauba wax was dissolved. After the dilong-chain alkyldimethylammonium salt was completely dissolved, 500 g of warm water, which had been kept at 75 ° C. in advance, was added dropwise over 20 minutes. During this time, the temperature was kept at 80 ° C. or higher. Then, alkylamine acetate (stearylamine acetate acetamine 8
6: Kao Corporation), stirred at 240 rpm for 10 minutes, and cooled to a temperature of 40 ° C. or lower to obtain an aqueous wax composition of the present invention.

The obtained aqueous wax composition was evaluated by the following test methods. Table 3 shows the obtained results.
Shown in <Evaluation of low-temperature stability> About 100 ml of the aqueous wax composition obtained in Example 1 was collected in a glass bottle, left in a freezer at -20 ° C for 18 hours, and then left at room temperature for 6 hours to defrost. This operation was repeated five times, and changes in the aqueous wax composition were visually observed, and evaluated according to the following evaluation criteria. Evaluation criteria : No change. Δ: There was a slight change such as turbidity. X: completely separated and clouded.

<Evaluation of Stability at Room Temperature> The stock solution of the aqueous wax composition obtained in Example 1 was allowed to stand in a room and the state after one month was visually observed, and evaluated according to the following evaluation criteria. Evaluation criteria : No change. Δ: There was a slight change such as turbidity. X: Phase separated.

<Evaluation of Water Repellency> A 500 mL spray container was prepared by diluting a stock solution of a wax base material (Falcon rinse, manufactured by Power Up Japan) to a concentration of 5% by mass with water.
Put in 1. Next, the aqueous wax composition obtained in Example 1 is diluted to a concentration of 10% with water and placed in a 500 mL spray container 2. 0.5% by mass above in a pre-cleaned coating plate (50x100; Solid Black JIS-K-2398 manufactured by Nippon Tact)
Spray the primer solution evenly 5 times. Subsequently, a 10% aqueous wax composition solution is sprayed thereon uniformly 5 times. At this time, a white solid precipitates. Next, the coating plate is rinsed with tap water, rinsed, and after the water has run out, water droplets are sprayed on the coated plate, and the speed at which the water is drained from the coated plate and the state of adhesion of the water droplets are visually observed. The evaluation was performed according to the evaluation criteria. ：: Good water repellency (Fast water cut, spherical fine water droplets were formed by spraying water droplets) △: Slightly poor water repellency (Slightly slow water cut, slightly elliptical water droplets slightly sprayed with water droplets ×: Inferior in water repellency (rate of water dripping is very slow, large amorphous water droplets were formed by spraying water droplets)

<Evaluation of Manufacturability> The state of the production of the aqueous wax composition was visually observed and evaluated according to the following evaluation criteria. Evaluation Criteria : Completely dissolved, with little increase in viscosity. Δ: The viscosity was slightly increased, or the system was slightly clouded. X: Viscosity increased sharply and cloudiness was intense.

Examples 2 to 8 and Comparative Examples 1 to 3 Example 1 was repeated except that the materials were as shown in Tables 1 and 2.
In the same manner as in the above, an aqueous wax composition was obtained. In addition, the number shown in a table | surface shows g. The obtained aqueous wax composition was evaluated in the same manner as in Example 1. The evaluation results are shown in Tables 3 and 4.

[0022]

[Table 1]

[0023]

[Table 2]

In Tables 1 and 2, 1) to 8) show the following. 1) Carnauba wax 2) Paraffin wax (melting point: 52 ° C) 3) Paraffin wax (melting point: 46 ° C) 4) α-olefin (Dialen 168: Mitsubishi Chemical Co., Ltd.)
5) Liquid paraffin 6) Cationic surfactant ARKARD 2HT-F (manufactured by Lion Corporation) 7) Cationic surfactant Cotamine D86P (manufactured by Kao Corporation) 8) Ethylene glycol 9) Alkylamine acetate acetamine 24 (Made by Kao Corporation)

[0025]

[Table 3]

[0026]

[Table 4]

As is clear from the descriptions in Tables 3 and 4,
The aqueous wax composition of the present invention was shown to be excellent in low temperature stability, room temperature stability, water repellency, and manufacturability.

As described in detail above, the aqueous wax composition of the present invention comprises (A) solid wax: 3 to 15% by mass,
(B) liquid wax agent: 1 to 15% by mass, (C) cationic surfactant: 2 to 7% by mass, (D) polyhydric alcohol:
12 to 30% by mass, and (E) an alkylamine acetate:
1 to 5% by mass, the compounding ratio of the component (A) and the component (D) ((A) / (D)) is 0.1 to 0.5, and the component (B) D) Compounding ratio with component ((B)
/ (D)) is 0.05 to 0.8, which is excellent in water repellency and storage stability. Further, according to the method for producing an aqueous wax composition of the present invention, an aqueous wax composition having excellent water repellency and storage stability can be easily produced.

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) C08K 5/098 C08J 3/03 CFJ C09G 1/08 F term (Reference) 4F070 AA63 AC32 AC36 AC42 AE14 AE28 BA02 CA12 CB02 CB03 CB12 4J002 AE03W BB01X EA016 EC048 EG029 EN137 FD317 GN00

Claims (3)

[Claims] (A) solid wax: 3 to 15% by mass,
(B) liquid wax agent: 1 to 15% by mass, (C) cationic surfactant: 2 to 7% by mass, (D) polyhydric alcohol:
12 to 30% by mass, and (E) an alkylamine acetate:
An aqueous wax composition containing 1 to 5% by mass, wherein the mixing ratio of the component (A) and the component (D) ((A) /
(D)) is 0.1 to 0.5, and the mixing ratio ((B) / (D)) of the component (B) and the component (D) is 0.05.
An aqueous wax composition, wherein the composition is -0.8. (A) solid wax: 3 to 15 parts by mass,
A suspension is obtained by suspending (B) a liquid wax agent: 1 to 15 parts by mass, (C) a cationic surfactant: 2 to 7 parts by mass, and (D) a polyhydric alcohol: 12 to 30 parts by mass in water. The suspension is uniformly dissolved at a temperature of 80 ° C. or higher to obtain a wax solution, and water and a (E) alkylamine acetate salt having a temperature of 70 ° C. or higher are added to the wax solution. A method for producing an aqueous wax composition, comprising: 3. The compounding ratio of the component (A) and the component (D) ((A) / (D)) is 0.1 to 0.5, and the component (B) and the component (D) (B) /
The method for producing an aqueous wax composition according to claim 2, wherein (D)) is 0.05 to 0.8.