KR101984468B1 - A Eco-Cleaner - Google Patents

Abstract

The present invention relates to an environmentally friendly detergent comprising a solvent and a compound represented by chemical formula 1 and, more specifically, to an environmentally friendly detergent which does not contain carcinogens and toxic components, has high detergency against contaminants even at room temperature, and quickly removes the contaminants without scratching an object to be cleaned.

Description

Eco-Cleaner {A Eco-Cleaner}

The present invention relates to an environmentally friendly detergent comprising a solvent and a compound of formula (1), more specifically, it does not contain a carcinogenic substance and a toxic component, has a high cleaning power against contaminants even at room temperature, To an environmentally friendly detergent capable of rapidly removing contaminants.

Washing removes the contaminants attached to the object to be washed to form the original pure object to be washed, and the washing process includes various mechanisms such as wetting, solubilization, and dispersion maintenance.

The detergent must adsorb and penetrate into the contaminants so that the contaminants can easily escape from the items to be cleaned and must be highly soluble to contain the contaminants that have been desorbed and that the solubilized contaminants do not re- It should be stably dispersed inside.

Examples of the cleaning agent include an aqueous cleaning agent, a conforming cleaning agent, an alcohol cleaning agent, a fluorocarbon-based cleaning agent, and a halogen-based cleaning agent, but it is preferable to use an aqueous cleaning agent, a compliance cleaning agent and an alcohol cleaning agent.

Conventionally, halogen-based cleaning agents have been mainly used, but these halogen-based cleaning agents have been increasingly used because they cause environmental problems such as destruction of the ozone layer as a carcinogen.

Therefore, development of an environmentally friendly detergent which does not contain carcinogenic substances and toxic components, has a high cleaning power against contaminants, and does not cause scratches on the objects to be cleaned.

Korean Patent Publication No. 10-1999-0034479 (May 15, 1999)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a cleaning composition which does not contain carcinogens and toxic components, has high cleaning power against contaminants even at room temperature, The purpose is to develop an environmentally friendly detergent.

The present invention also provides a process for the removal of contaminants from a subject to be washed, which can contain a large amount of contaminants which have been desorbed through high solubility, And an object of the present invention is to provide an environmentally-friendly detergent which can be dispersed.

The present invention relates to a process for the preparation of a compound of formula I, which comprises: a solvent selected from the group consisting of ethanol, methanol, propanol, isopropyl alcohol and 1-butanol; And a compound of the following formula (1).

[Chemical Formula 1]

(R ₁ and R ₂ are independently C1 to C5 alkyl groups)

In one embodiment of the present invention, the cleaning agent comprises 5 to 30 parts by weight of the compound of formula (1) based on 100 parts by weight of the solvent.

In one embodiment of the present invention, the solvent is ethanol, and the compound of Formula 1 is 3-methoxy-3-methyl-1-butanol.

In one embodiment of the present invention, the detergent further comprises 1 to 5 parts by weight of a fatty acid ester of sorbitan and 1 to 5 parts by weight of a fatty acid ester of polyoxyethylene sorbitan.

In one embodiment of the present invention, the cleaning agent further comprises 1 to 5 parts by weight of a dispersant selected from polyacrylic acid, polymethacrylic acid, polymaleic acid and polyfumaric acid.

The present invention can provide an environmentally friendly detergent which does not contain carcinogens and toxic components, has a high cleaning power against contaminants even at room temperature, and can quickly remove contaminants without damaging the objects to be cleaned.

In addition, the present invention can easily remove contaminants from the objects to be cleaned (PCB substrate, plastic, rubber, metal, glass, etc.), can contain a large amount of contaminants desorbed through high solubility, Can be stably dispersed in the detergent without re-adhering it to the object to be cleaned.

FIG. 1 shows the surface of a substrate observed with a SEM after cleaning the PCB substrate with a cleaning agent.
Figure 2 shows the surface of a substrate after cleaning the PCB substrate with a cleaning agent followed by observation with an optical microscope.

Hereinafter, the present invention will be described in detail based on examples. It is to be understood that the terminology, examples and the like used in the present invention are merely illustrative of the present invention in order to more clearly explain the present invention and to facilitate understanding of the ordinary artisan, and should not be construed as being limited thereto.

Technical terms and scientific terms used in the present invention mean what the person skilled in the art would normally understand unless otherwise defined.

The present invention relates to a process for the preparation of a compound of formula I, which comprises: a solvent selected from the group consisting of ethanol, methanol, propanol, isopropyl alcohol and 1-butanol; And a compound of the following formula (1).

[Chemical Formula 1]

(R ₁ and R ₂ are independently C1 to C5 alkyl groups)

The cleaning agent may include 5 to 30 parts by weight of the compound of formula (1) based on 100 parts by weight of the solvent.

The solvent serves to control the viscosity of the detergent and to disperse the desorbed contaminants. Alcohols such as ethanol, methanol, propanol, isopropyl alcohol and 1-butanol can be used without limitation, and ethanol is preferably used Do.

The compound of Chemical Formula 1 is used to remove pollutants from the objects to be cleaned (PCB substrate, plastic, rubber, metal, glass, etc.), solubilize the desorbed contaminants in the cleaning agent, But also stably disperses it in the cleaning agent.

Examples of the compound of Formula 1 include 3-methoxy-3-methyl-1-butanol, 3-methoxy-3-ethyl-1-butanol, 3- 3-methyl-1-butanol, 3-methoxy-3-pentyl-1-butanol, 3-propyl-1-pentanol, 3-methoxy-3-propyl-1-pentanol, 3-methoxy- 1-hexanol, 3-methoxy-3-ethyl-1-hexanol, 3-methoxy- Methyl-1-heptanol, 3-methoxy-3-ethyl-1-heptanol, 3-methoxy- 3-methyl-1-heptanol, 3-methoxy-3-methyl-1-heptanol, 3-methoxy- 3-propyl-1-octanol, 3-methoxy-3-butyl-1-octanol, 3-methoxy- And the like can be used, and 3-methoxy-3-methyl-1-butanol is used .

Also, 3-methoxy-3-methyl-1-butanol and 3-methoxy-3-methyl-1-pentanol can be used simultaneously.

The weight ratio of 3-methoxy-3-methyl-1-butanol and 3-methoxy-3-methyl-1-pentanol is preferably 70 to 90: 10 to 30, If the detachment of the contaminants from the washing water is poor, and the weight ratio exceeds 90:10, the contaminants that have been removed can not be stably dispersed in the detergent.

The content of the compound of Formula 1 is preferably 5 to 30 parts by weight based on 100 parts by weight of the solvent. If the content of the compound is less than 5 parts by weight, the contaminants may not desorb from the washed material, The desorbed contaminants can not be stably dispersed in the cleanser.

The cleansing agent may further comprise 1 to 5 parts by weight of a fatty acid ester of sorbitan and 1 to 5 parts by weight of a fatty acid ester of polyoxyethylene sorbitan.

The fatty acid ester of sorbitan and the fatty acid ester of polyoxyethylene sorbitan serve as a dispersing agent and serve to stably disperse contaminants desorbed from the object to be washed in the detergent.

The fatty acid ester of the polyoxyethylene sorbitan may be selected from the group consisting of polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, .

The content of the fatty acid ester of the polyoxyethylene sorbitan is preferably 1 to 5 parts by weight based on 100 parts by weight of the solvent. When the content is less than 1 part by weight, the effect of addition is insignificant. When the content exceeds 5 parts by weight, May be deteriorated.

The fatty acid ester of the sorbitan can be used without limitation such as sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, and the like.

The content of the fatty acid ester of the sorbitan is preferably 1 to 5 parts by weight based on 100 parts by weight of the solvent. When the content is less than 1 part by weight, the effect of addition is insignificant. When the content exceeds 5 parts by weight, Can be lowered.

At this time, the weight ratio of the fatty acid ester of polyoxyethylene sorbitan and the fatty acid ester of sorbitan is preferably 60 to 80:20 to 40, and when the weight ratio is less than 60:40, Exceeds 80:20, the storage stability of the cleaning agent may be deteriorated.

The detergent may further comprise at least one dispersant selected from polyacrylic acid, polymethacrylic acid, polymaleic acid and polyfumaric acid.

Particularly, it is preferable to use a mixture of polyacrylic acid and polymaleic acid as the dispersing agent. The weight ratio of polyacrylic acid and polymaleic acid is preferably 60 to 80:20 to 40, and when the range is satisfied, the storage stability and dispersibility of the cleaning agent are excellent.

The content of the dispersing agent is preferably 1 to 5 parts by weight based on 100 parts by weight of the solvent. When the content is less than 1 part by weight, the effect of addition is insignificant. When the content is more than 5 parts by weight,

The cleaning agent may be selected from the group consisting of trimethanolamine, triethanolamine, trimethylammonium hydroxide, triethylammonium hydroxide, dimethylbenzylamine, ethoxybenzylamine, amine, sodium hydroxide, and potassium hydroxide.

The content of the dispersion stabilizer is preferably 1 to 5 parts by weight based on 100 parts by weight of the solvent. When the content is less than 1 part by weight, the effect of addition is insignificant. When the content is more than 5 parts by weight, .

The detergent may further comprise one or more polyols to improve cleaning properties and dispersibility.

Erythritol, arabitol, xylitol, ribitol, sorbitol, mannitol, galactitol, maltitol and lactitol can be used without limitation in the polyol.

The content of the polyol is preferably 1 to 5 parts by weight with respect to 100 parts by weight of the solvent. When the content is less than 1 part by weight, the effect of addition is insignificant. When the content is more than 5 parts by weight,

The environmentally friendly cleaning agent of the present invention does not contain carcinogens and toxic components and has a high cleaning power against contaminants even at room temperature and can be used for cleaning contaminated materials such as PCB substrate, plastic, rubber, metal, and glass without scratches or scratches The material can be removed quickly.

In addition, the eco-friendly detergent of the present invention can easily remove contaminants from a washed article, can contain a large amount of contaminants desorbed due to high solubility, and can prevent the solubilized contaminants from re- It is possible to stably disperse the particles.

Hereinafter, the present invention will be described in detail with reference to examples. The following examples are intended to illustrate the practice of the present invention and are not intended to limit the scope of the present invention.

(Contaminants)

4.0% potassium oleate and 0.5% sodium stearate in 300 ml of demineralized water. The solution was stirred under minimal heating until the potassium oleate was completely dissolved. 150 ml of a 2.5% CaCl ₂ .2H ₂ O solution in deionized water was added to form a white precipitate. After stirring the mixture, 0.36 g of methylene blue was added to 450 ml of a solution. The solution was stirred until thoroughly mixed and filtered through a glass sinter funnel. The solid product was rinsed three times or until the mother liquor became light blue. The wet solid was transferred to another beaker, to which 110 mL of deionized water was added. The mixture was stirred with a mechanical stirrer until the slurry reached a uniform consistency.

(Cleaning of pollutants)

First, the contaminants prepared on a 1 cm x 1 cm PCB substrate (PCB-0208S) with the foreign substances removed from the surface were directly applied with a paint brush, and then completely dried at room temperature for 60 minutes.

The surface of the dried PCB substrate was sprayed with water and moistened, then the cleaning agent was applied to the sponge and the surface of the substrate was evenly rubbed.

Water was sprayed onto the surface of the substrate again to completely remove the cleaning agent, and then the state of the substrate was visually confirmed and evaluated by a 5-point scaling method. At this time, the evaluation items are clean, and the criteria for each item are as follows.

Very Good: 5

Good: 4

Moderate: 3

Bad: 2

No change: 1

(Re-contamination)

The contaminants were applied to the substrate after the pollutant cleaning was measured in the same manner as before. The state of the surface of the substrate after application was visually observed, and it was marked as defective, normal, excellent, and excellent depending on the degree of adhesion of contaminants.

(Product preservation)

100 ml of the prepared detergent was placed in a 200 ml container, which was then sealed and stored at room temperature for 14 days. After storage, the container was opened and the condition of the cleaning agent was checked and evaluated as follows.

5: No phase change occurred

4: Cracking of the cleaning agent occurs finely

3: Phase separation of cleaning agent starts

2: Severe cleavage and phase separation of cleaning agent

1: Cleaner is deposited on the bottom of the container

(Example 1)

100 parts by weight of ethanol and 15 parts by weight of 3-methoxy-3-methyl-1-butanol were mixed to prepare an environmentally friendly detergent.

(Example 2)

100 parts by weight of ethanol and 3 parts by weight of 3-methoxy-3-methyl-1-butanol were mixed to prepare an environmentally friendly cleaning agent.

(Example 3)

100 parts by weight of ethanol and 35 parts by weight of 3-methoxy-3-methyl-1-butanol were mixed to prepare an environmentally friendly detergent.

(Example 4)

100 parts by weight of ethanol, 12 parts by weight of 3-methoxy-3-methyl-1-butanol and 3 parts by weight of 3-methoxy-3-methyl-1-pentanol were mixed to prepare an environmentally friendly detergent.

(Example 5)

2 parts by weight of sorbitan monolaurate and 4 parts by weight of polyoxyethylene sorbitan monolaurate were further used in place of the polyoxyethylene sorbitan monolaurate.

(Example 6)

100 parts by weight of ethanol and 15 parts by weight of 3-methoxy-3-methyl-1-hexanol were mixed to prepare an environmentally friendly detergent.

(Example 7)

100 parts by weight of ethanol and 15 parts by weight of 3-methoxy-3-methyl-1-heptanol were mixed to prepare an environmentally friendly detergent.

(Example 8)

100 parts by weight of ethanol and 15 parts by weight of 3-methoxy-3-methyl-1-octanol were mixed to prepare an environmentally friendly detergent.

(Comparative Example 1)

TCE (trichlorethylene) was used as a cleaning agent.

(Comparative Example 2)

NC-F (HFOs, PFCs) was used as a cleaning agent.

The cleaning properties of the cleaning agents prepared in the Examples and Comparative Examples were measured, and the results are shown in Table 1 below.

Cleanliness Recontamination Preservability Example 1 4.0 eminence 4.1 Example 2 3.5 usually 3.7 Example 3 3.6 usually 3.5 Example 4 4.4 eminence 4.5 Example 5 4.6 eminence 4.7 Example 6 3.9 eminence 4.0 Example 7 3.8 eminence 3.9 Example 8 4.1 eminence 4.0 Comparative Example 1 3.6 Bad 3.8 Comparative Example 2 3.1 Bad 3.9

As can be seen from the above Table 1, it can be confirmed that Examples 1 to 8 are excellent in cleaning property, re-contamination property and storage stability.

On the other hand, in the case of Comparative Examples 1 and 2, it can be seen that the above characteristics are lower than those of the Examples.

FIG. 1 shows a surface of a substrate observed with an SEM after cleaning a PCB substrate with a cleaning agent, and FIG. 2 shows a surface of the substrate observed with an optical microscope after cleaning the PCB substrate with a cleaning agent. MMB means 3-methoxy-3-methyl-1-butanol.

When the MMB of the present invention is used, cleaning property is excellent, and when NC-F is used, detergency is deteriorated.

Claims (5)

One or more solvents selected from ethanol, methanol, propanol, isopropyl alcohol and 1-butanol;
A compound of the formula 1 below;
Fatty acid esters of sorbitan;
Fatty acid esters of polyoxyethylene sorbitan; And
And at least one dispersing agent selected from polyacrylic acid, polymethacrylic acid, polymaleic acid, and polyfumaric acid,
[Chemical Formula 1]

(R ₁ and R ₂ are independently C1 to C5 alkyl groups)
The cleaning agent may be used in an amount of 5 to 30 parts by weight, preferably 1 to 5 parts by weight, based on 100 parts by weight of the solvent, of the compound of formula (I), 1 to 5 parts by weight of fatty acid ester of sorbitan, 1 to 5 parts by weight of fatty acid ester of polyoxyethylene sorbitan, Including,
The weight ratio of the fatty acid ester of polyoxyethylene sorbitan and the fatty acid ester of sorbitan is 60 to 80:20 to 40,
Wherein the dispersant is a mixture of polyacrylic acid and polymaleic acid, and the weight ratio of the polyacrylic acid to the polymaleic acid is 60 to 80:20 to 40.
delete The method according to claim 1,
Wherein the solvent is ethanol,
Wherein the compound of Formula 1 is 3-methoxy-3-methyl-1-butanol.
delete delete

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