KR20050075064A - Cleaning compositions for hard surfaces - Google Patents

Abstract

The present invention relates to a composition for cleaning glass and hard surfaces similar to glass, specifically including surfactants, water soluble alcohols and water, wherein glycerol or ethylene glycol is used alone or in addition to monohydric alcohols with water soluble alcohols. The present invention relates to a cleaning composition comprising glyceryl polyacrylate, which is used in combination or in addition to the above, forms a superabsorbent coating on a hard surface.

The composition of the present invention includes a glyceryl polyacrylate or glycerol having excellent water retention performance, and when used in glass or the like, forms a super absorbent film on the glass surface to reduce the coefficient of friction.

Description

Hard surface cleaner composition {CLEANING COMPOSITIONS FOR HARD SURFACES}

The present invention relates to compositions for cleaning glass and hard surfaces similar to glass.

More specifically, a glycerol containing a surfactant, a water-soluble alcohol and water, wherein glycerol or ethylene glycol is used alone or in combination with a water-soluble alcohol in addition to a monohydric alcohol, or in addition to the above, a superabsorbent film is formed on a hard surface. A detergent composition comprising reel polyacrylate is provided.

The detergent compositions conventionally used for cleaning automotive glass surfaces are composed of a water-soluble surfactant, a corrosion inhibitor, monohydric and polyhydric alcohols alone or in combination.

The detergent compositions effectively remove organic / inorganic contaminants such as dust, tar and waxes attached to the glass surface, but adversely affect the performance of the wiper blades made of rubber.

Specifically, these have the disadvantage that the adhesive material of the cleaning agent remains on the glass surface after use, which increases the coefficient of friction, thus causing abrasion during operation of the wiper blade, causing noise and chattering and further reducing the durability. .

In addition, the coefficient of friction is also related to the formation of the water film on the glass surface.When the water film is formed (in the rain), the coefficient of friction becomes lower due to the lubricity of water, and when the water film cannot be formed (intermittent rain or dry state). The friction coefficient is high.

On the other hand, in the conventional wiper blade, butadiene rubber, chlorinated rubber, ethylene-propylene-diene-monomer rubber, etc. are used alone or as a blend, and the surface treatment is usually performed to reduce the friction coefficient. .

Halogen treatment is typical of such a surface treatment, and in recent years, the coating treatment which coats a lubricating film is performed, and the said surface-treated wiper blade shows a low coefficient of friction.

In order to improve the performance of the cleaning composition, US Patent No. 3,989,633 attempts to increase the durability of the wiper blade by forming a lubricity film on the glass surface by adding 10 to 1,000 ppm of polyacrylamide having a molecular weight of 1,000,000 or less to the washer liquid cleaning composition. Has been done.

In addition, US Patent No. 4,606,842 discloses a technique for improving the cleaning effect by using 0.005% to 0.01% by weight of a low molecular weight polyacrylic resin having an average molecular weight of about 500 to 8000 in a water-soluble glass cleaner composition as a builder. have.

However, in the case of using the cleaning agent of the composition described above, there is a problem in that the lubricity is excellent in cleaning, but the moisture-retaining performance is relatively poor, so that the coefficient of friction increases in the dry state after use, so that the durability of the wiper blade is insufficient.

The present invention forms a superabsorbent coating on glass or a hard surface similar to glass, thereby reducing the friction coefficient between the wiper blade and the glass surface, thereby effectively preventing chattering and noise of the wiper blade and improving durability of the wiper blade. It is an object to provide a cleaning composition for automotive glass.

In order to achieve the above object, the present invention provides a composition for cleaning glass and glass-like hard surfaces, comprising a surfactant, a water-soluble alcohol and water, wherein the water-soluble alcohol in addition to the monohydric alcohol lubricity on the hard surface It provides a cleaning composition using ethylene glycol and glycerol to improve the use alone or in combination.

The present invention also provides a composition for cleaning glass and glass-like hard surfaces, comprising a glyceryl polyacrylate comprising a surfactant, a water soluble alcohol and water, in addition to forming a superabsorbent coating on the hard surface. It provides a detergent composition.

At this time, the glyceryl polyacrylate is preferably included in 0.05 to 0.15% by weight relative to the total weight of the composition, more preferably contained in 0.05 to 0.15% by weight.

Hereinafter, the present invention will be described in detail.

The detergent composition according to the present invention comprises a surfactant, a water-soluble alcohol and water, wherein in addition to the monohydric alcohol as a water-soluble alcohol, ethylene glycol and glycerol for improving lubricity on hard surfaces are used alone or in combination, or in addition to the above. Glyceryl polyacrylate, which forms a superabsorbent coating on the hard surface.

In the above, the surfactant is usually used alone or in combination with anionic and nonionic surfactants in the cleaning composition.

In the case of using a nonionic surfactant, there is an advantage in that the cleaning power is moderate and the foam is small, but there is a disadvantage of forming a detergent stain by remaining on the hard surface after use.

In particular, in the case of the cleaning composition for automobile glass, nonionic surfactants having a high tendency to remain on hard surfaces have a disadvantage of generating noise when the wiper blade is operated, so they are selected from anionic surfactants having a low tendency to remain on the glass surface. It is desirable to.

According to one embodiment of the present invention, an anionic surfactant is used as the surfactant to overcome the disadvantage of remaining on the hard surface and contaminating the surface.

Anionic surfactants that can be used include alkylbenzene sulfonates, alpha olefin sulfonates, alkyl naphthalene sulfonates, higher alcohol sulfate salts and alkyl ether sulfate salts. It is preferable to use higher alcohol sulfate salts, and sodium lauryl sulfate. More preferably.

The sodium lauryl sulfate has a low foaming while retaining the proper cleaning power, is commercially used as a component of a detergent or a wetting agent of the fiber, when used as a surfactant of the cleaning agent for automotive glass, the glass material is less remaining on the glass surface after washing Do.

Specifically, sodium lauryl sulfate has the disadvantage that it can not be effective cleaning when less than 0.1% by weight relative to the total content of the composition, when more than 0.2% by weight is generated a lot of bubbles and contaminate the glass surface, so the total It is preferred to be included in the range of 0.1% to 0.2% by weight relative to the content.

In addition, the water-soluble alcohol is generally used in the detergent composition of the present invention in order to reduce the freezing point with water.

The concept of “water-soluble alcohol” includes both monohydric and polyhydric alcohols, and is a concept applicable to water solubility.

In the case of conventional detergent compositions, methyl alcohol in monohydric alcohol is generally used alone as a water-soluble alcohol used to reduce the freezing point, and in addition to freezing, monohydric to prevent frost after spraying during winter use. In alcohol, ethyl alcohol with a boiling point higher than methyl alcohol may be mixed and used.

The cleaning composition of the present invention may be used alone or mixed with a monohydric alcohol or a polyhydric alcohol, and usable monohydric alcohols include methyl alcohol, ethyl alcohol, isopropyl alcohol, etc., and polyhydric alcohols include ethylene glycol, propylene glycol, and glycerin. Etc.

In this case, when methyl alcohol alone is used as the monohydric alcohol, the methyl alcohol cannot be freeze when used in winter when the content is less than 20% by weight based on the total content of the composition, and when it exceeds 35% by weight, flammability is a concern. And to cause a cost increase, it is preferable to include within the range of 20% by weight to 35% by weight.

In addition, by using isopropyl alcohol having a high boiling point in the monohydric alcohol mixed with methyl alcohol and ethyl alcohol, frost can be effectively prevented even when used at a low temperature.

At this time, isopropyl alcohol is preferably used in 5 to 10% by weight based on the total weight of the composition.

The detergent composition according to the present invention is characterized by using ethylene glycol and glycerol alone or in combination to improve lubricity on hard surfaces in addition to monohydric alcohol. At this time, glycerol and ethylene glycol are excellent in lubricity, and especially show synergistic effect when mixed.

Specifically, when using glycerol alone, it is preferable to use 1 to 3% by weight based on the total weight of the composition, and when using ethylene glycol alone, it is preferable to use 2 to 5% by weight.

If ethylene glycol is contained in an amount of 2 wt% or less based on the total composition content, effective performance cannot be obtained. If it is 5 wt% or more, it may leave a mark on the glass surface after use and may cause a cost increase.

When glycerol and ethylene glycol are mixed and used, it is preferable to contain glycerol and ethylene glycol at 0.5 to 2 weight%, respectively.

According to one embodiment of the present invention, methyl alcohol is used in the monohydric alcohol and ethylene glycol is selected in the polyhydric alcohol, and these are mixed and used.

The detergent composition according to the present invention comprises a glyceryl polyacrylate comprising a surfactant, a water soluble alcohol and water, in addition to forming a superabsorbent coating on the hard surface.

That is, the present invention is characterized by adding a glyceryl polyacrylate that can form a super absorbent film on a hard surface having excellent water-retaining performance in a conventional detergent composition.

The glyceryl polyacrylate is composed by mixing glycerol and other polyols and polyacrylates or polymethacrylates, and is characterized by strong hydration power and high water absorption and stability.

In addition, the high moisture-retaining performance has a high absorbency that does not completely dry the moisture even when exposed to a long time at room temperature conditions.

In the present invention, glycerol polyacrylate is added to the cleaning composition according to the present invention for the purpose of forming a superabsorbent coating on the surface of glass or the like to reduce the coefficient of friction by using the above characteristics.

According to one embodiment of the present invention, glyceryl polyacrylate is added to a conventional automotive glass cleaner composition, thereby reducing noise and chattering and increasing durability of the wiper blade by lowering the friction coefficient of the glass by the wiper blade. .

Generally, wiper blades for automobiles are recognized as wiping off water, but in practice, the wiper blades do not completely remove water, but rather, the wiper blades operate to form a uniform water film on the hydrophilic glass surface.

Therefore, the coefficient of friction is low in the presence of water, the coefficient of friction increases in the dry state without water.

In this case, the water retaining ability is excellent to form a water film on the glass surface, and when water film is formed, the effect of significantly reducing the friction coefficient between the wiper blade and the glass is obtained by adding glyceryl polyacrylate to maintain the water film for a long time. .

Specifically, when the amount of glyceryl polyacrylate is added in an amount of 0.01 wt% or less, the effect of reducing frictional coefficients is insufficient, and when it is 0.15 wt% or more, the viscosity of the cleaning agent itself may increase, which may cause a problem and inferior phase transparency. It is possible to leave marks on the glass surface after use, so that the amount is preferably included in the range of 0.01% to 0.15% by weight.

More preferably, it is to be included within the range of 0.05% to 0.15% by weight.

For use as the glyceryl polyacrylate, Hispagel series sold by Center-Chem may be used.

In addition, according to an embodiment of the present invention, the water-soluble composition according to the present invention may further add one or more substances selected from the group consisting of preservatives, chelating agents, pH adjusting agents, dyes, fragrances and builders to suit their purpose. .

Generally, chelating agents are added to the cleaning composition to stabilize the phase by metal ion collection.

The chelating agent may be selected and used among commonly used chelating agents. Examples of the chelating agent may include ethylenediaminetetraacetic acid-4sodium and ethylenediaminetetraacetic acid-2sodium.

In the present invention, ethylenediaminetetraacetic acid-4sodium is used as a chelating agent, and if the content is less than 0.005% by weight, the phase stability is unstable, and if the content is more than 0.05% by weight, it may cause a cost increase. 0.005% to 0.05% by weight.

In addition, a corrosion inhibitor may be added to the cleaning composition according to the present invention in order to prevent corrosion of other members within the range in which the cleaning composition affects, including glass and glass-like hard bodies.

Specifically, in the case of the vehicle glass cleaner composition, a corrosion inhibitor is added to prevent corrosion of the washer nozzle and the wiper blade system and the vehicle body.

The corrosion inhibitor may be selected from among conventionally used corrosion inhibitors, it is preferable to use an organic acid or inorganic acid alone or mixed.

Examples of the organic acid type that can be used include amines, nitro compounds, triazoles, and the like, and inorganic acid types include nitrates, nitrites, silicates, and the like.

On the other hand, it is more preferable to use an organic acid and an inorganic acid as a corrosion inhibitor, and it is more preferable to use tolyltriazole in triazoles in organic acids and sodium nitrate in nitrates in inorganic acids.

If the corrosion inhibitor is less than 0.05% by weight relative to the total content of the composition is corrosive to the car body, if the content exceeds 0.1% by weight can prevent corrosion of the car body, but may cause abnormal noise on the wiper blades Therefore, it is preferable to include from 0.05% to 0.1% by weight.

The detergent composition according to the present invention can be prepared by sequentially adding a surfactant, a water soluble alcohol and glyceryl polyacrylate to water.

In addition, according to one embodiment of the present invention, after the chelate is added to the water to dissolve, the high surfactant, corrosion inhibitor, water-soluble alcohol and glyceryl polyacrylate are sequentially added, depending on the purpose optionally pH adjuster, dye or perfume It is prepared by adding more.

The present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to these examples, and various modifications and variations are possible within the protection scope of the present invention described in the claims. It will be apparent to those skilled in the art to which the invention pertains.

Examples 1 to 9 Preparation of Cleaning Composition

To 50% by weight of purified water, ethylenediaminetetraacetic acid-4sodium (EDTA-4Na) was dissolved with a chelating agent as shown in Table 1, followed by addition of anionic surfactant, preservative, alcohol and glycerylpolyacrylate, and purified water. The total composition was adjusted to 100 to prepare a detergent composition according to the present invention.

Example One 2 3 4 5 6 7 8 9 EDTA-4Na 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 Sodium lauryl sulfate 0.10 0.15 0.20 0.15 0.15 0.15 0.15 0.15 0.15 Tolyltriazole 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 Sodium nitrate 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Methyl alcohol 30 30 30 20 40 30 30 30 30 Ethylene glycol 2.5 2.5 2.5 2.5 2.5 2.0 5.0 2.5 2.5 Glyceryl Polyacrylate 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.05 0.15

Comparative Example 1

A cleaning composition was prepared in the same manner as in Example 2, except that polyoxyethylenenonylphenol ether (NP), which is a nonionic surfactant, was used instead of sodium lauryl sulfate.

Comparative Example 2

Same as Example 2 except that polyoxyethylenenonylphenol ether (NP), a nonionic surfactant, was used instead of sodium lauryl sulfate, and Carbopol ETD2623 (Noveon), a polyacrylic resin, was used instead of glyceryl polyacrylate. The detergent composition was prepared.

Comparative Example 3

A cleaning composition was prepared in the same manner as in Example 2, except that polyoxyethylenenonylphenol ether (NP), a nonionic surfactant, was used instead of sodium lauryl sulfate and no glyceryl polyacrylate was added.

<Comparative Example 4>

A cleaning composition was prepared in the same manner as in Example 2, except that polyoxyethylenenonylphenol ether (NP), a nonionic surfactant, was used instead of sodium lauryl sulfate, and glyceryl polyacrylate and methyl alcohol were not added.

Using the detergent compositions prepared in Examples 1 to 9 and Comparative Examples 1 to 4, the friction coefficient, the cleaning power, the fouling property and the freezing performance were tested by the methods of Test Examples 1 to 4 below, and the results are shown in Table 2 below. .

Coefficient of friction (μ) Cleaning power Pollutant Freezing performance Sprinkling friction coefficient Primary dry friction coefficient Secondary dry friction coefficient Example 1 0.71 0.73 0.78 × ◎ ◎ Example 2 0.71 0.74 0.77 ◎ ◎ ◎ Example 3 0.70 0.73 0.85 ◎ △ ◎ Example 4 0.75 0.76 0.79 ◎ ◎ × Example 5 0.68 0.75 0.78 ◎ ◎ ◎ Example 6 0.70 0.74 0.80 ◎ ◎ ◎ Example 7 0.72 0.73 0.76 ◎ △ ◎ Example 8 0.70 0.73 0.82 ◎ ◎ ◎ Example 9 0.71 0.73 0.75 ◎ △ ◎ Comparative Example 1 0.76 0.77 0.88 ◎ × ◎ Comparative Example 2 0.73 0.75 0.95 ◎ × ◎ Comparative Example 3 0.76 0.81 1.05 ◎ × ◎ Comparative Example 4 0.77 0.80 1.02 ◎ × ×

As can be seen from Table 2, in Comparative Examples 2 to 4 without the addition of glyceryl polyacrylate, the coefficient of friction was greatly increased, and in the case of Comparative Example 2 in which a polyacrylic resin was added instead of glyceryl polyacrylate In particular, the secondary dry friction coefficient was significantly higher.

That is, according to the present invention, the cleaning composition containing glyceryl polyacrylate has an effect of lowering the coefficient of friction and in particular in the long term.

In the case of pollution degree, it can be seen that the condition is improved when using an anionic surfactant as compared to using a nonionic surfactant.

Test Example 1 Friction Coefficient Measurement Test

1) Measuring device: FRICTION COEFFICIENT FOR WIPER of TRIBOLOGY Lab. Of Keimyung University, Korea was used.

2) Measuring principle: Torque gauge is attached to the wiper motor to output the force applied when the wiper blade reciprocates. This is called "F (friction force)" and the pressure on the wiper arm is "P (vertical load)" Thus, the friction coefficient is calculated as shown in Equation 1 below.

F / P = μ (friction coefficient)

3) Test method

A) sprinkling coefficient of friction

30 seconds while the wiper blade is installed in the system and sprayed with the cleaner under the ambient temperature of 20 ± 15 ℃, the spraying amount of the cleaner over 0.8 liter / min and the reciprocating operating speed of 45 times / min (see Korean Industrial Standard KS R 3015). The friction coefficient was measured by operating the wiper blades during this time (the value at this time is referred to as "spray friction coefficient").

B) primary dry friction coefficient

Immediately after the test, the friction coefficient was measured by operating the wiper blade for 30 seconds in a dry state (non-sprayed state) (the value at this time is referred to as "primary dry friction coefficient").

C) secondary dry friction coefficient

After 10 minutes of drying, the wiper blade was operated for 30 seconds in the dry state again to determine the coefficient of friction. (The value at this time is referred to as the "secondary dry friction coefficient."

D) Evaluation method

The lower the friction coefficient, the better the lubricity. In particular, the coefficient of friction in the first dry state shows the effect of reducing the initial coefficient of friction of the detergent, and the coefficient of friction in the second dry state shows the effect of reducing the long term coefficient of friction of the cleaner.

Therefore, by measuring the sprinkling friction coefficient, the primary dry friction coefficient, and the secondary dry friction coefficient by the test method of a), b), c), the effect of reducing the long-term friction coefficient of the cleaning agent can be seen numerically.

Test Example 2 Detergency Test

1) Test Method

It was tested using the Korean Industrial Standard KS M 2716 test method.

2) Evaluation method

After the test, the removal rate of contaminants on the glass surface was visually compared between before and after removal and was determined as follows.

◎ Removal rate over 80%

○ 60-80% removal rate

△ removal rate of about 40-60%

× removal rate of less than about 40%

Test Example 3 Contamination Test

1) Test Method

Section 1 of the test and evaluation method items were observed after the test of the wiping zone of the wiper blade.

2) Evaluation method

After the test, the presence / absence of contaminant bands remaining in the wiping zone (contamination) was visually evaluated as follows.

◎ Less than 10% contaminant banding.

○ 10 ~ 30% contaminant banding

△ About 30 ~ 50% contaminant banding

× Contaminant band formation of more than about 50%

Test Example 4 Freezing Performance Test

1) Test Method

The detergent was placed in a clear test glass bottle (150 ml) and observed at minus 20 ° C. for 12 hours.

2) Evaluation method

The change over time of the test was visually determined as follows.

◎ Very good image.

○ The image is opaque.

△ Phase is opaque and poor flow

× Frozen.

As described above, the cleaning composition according to the present invention contains glycerol or glyceryl polyacrylate, which significantly reduces the friction coefficient, and particularly, the friction coefficient decreases even in a dry state, thereby reducing the long-term friction coefficient. Therefore, when used as a washer fluid for automotive glass, it is possible to effectively prevent noise and chattering when using the wiper blade, and to improve the durability of the wiper blade.

Claims (11)

In water-soluble compositions for cleaning glass and glass-like hard surfaces, Contains surfactants, water-soluble alcohols and water In addition to the above, a composition comprising glyceryl polyacrylate that forms a superabsorbent coating on a hard surface. The composition of claim 1, wherein the glyceryl polyacrylate comprises from 0.01 to 0.15 weight percent based on the total weight of the composition. The composition of claim 1 or 2, wherein the glyceryl polyacrylate comprises from 0.05 to 0.15% by weight relative to the total weight of the composition. In water-soluble compositions for cleaning glass and glass-like hard surfaces, Includes surfactants, water soluble alcohols and water, At this time, a composition containing glycerol and / or ethylene glycol in addition to the monohydric alcohol as a water-soluble alcohol. The composition of claim 4, wherein the glycerol is included in an amount of 1 to 3% by weight based on the total weight of the composition. The composition of claim 4, wherein the ethylene glycol is included in an amount of 2 to 5% by weight based on the total weight of the composition. The composition of claim 4, wherein when glycerol and ethylene glycol are mixed, the glycerol and ethylene glycol are each contained in an amount of 0.5 to 2 wt%. 5. A composition according to claim 1 or 4 comprising in addition to the above at least one substance selected from the group consisting of preservatives, chelating agents, pH adjusting agents, dyes, perfumes and builders. The composition of claim 1 or 4, wherein the surfactant is an anionic surfactant. Cleaning agent for automobile glass containing the composition of any one of Claims 1-9. In water-soluble compositions for cleaning glass and glass-like hard surfaces comprising surfactants, water-soluble alcohols and water, A composition comprising a mixture of methyl alcohol, ethyl alcohol and isopropyl alcohol as a water-soluble alcohol.