KR100690271B1 - Method of manufacturing Degreasing Cleaner - Google Patents

Abstract

The present invention utilizes the degreasing concept of saponification (saponification, saponification), adsorption, permeation, and dispersing of the degreasing agent and the wetting effect of the surfactant to remove various oils and contaminants on the surface of the material. Multi-purpose alkaline degreasing cleaner that can be used at low temperatures and suppresses bubble generation to improve workability, Mineral oil  The present invention relates to a method for producing an alkaline alkali degreasing cleaner that is excellent in removal and that solves problems such as corrosion on metal surfaces.

Description

Method of manufacturing degreasing cleaner {Method of manufacturing Degreasing Cleaner}

In general, to clean the surface of the material, an acidic cleaner is used to remove black rust, iron oxide, scale, scale, etc. generated on the surface according to the purpose of cleaning, and caustic soda is used to remove various organic substances. Organic substances are degreased by using an alkaline cleaner or solvents such as various oils.

Double degreasing refers to the operation of removing organic matter on the surface of a material to obtain a chemically clean surface.

Metal surface, a representative material that requires degreasing, is processed or processed for rust prevention purposes. Mineral oil  Ie petroleum or its products, hydrocarbon compounds, machine oils, Grease, etc.  It has been applied or remains and their removal is of great importance according to its purpose.

The degreasing methods currently used can be classified as follows.

(1) solvent degreasing method

Gasoline or solvent, Trichloro  Using a solvent such as ethylene (Trichloro ethylene, TCE) Immersion  It is a method to remove organic substances by moistening the surface by the method such as, or to remove oil by solvent vapor.

In general industrial sites Trichloro  Chlorine-based hydrocarbons, such as ethylene, are mainly used, and they are widely used because they can shorten the working time such as drying due to their strong washing power and quick drying effect.

However, such chlorinated hydrocarbons cause air and water pollution and the destruction of the earth's ozone layer, and regulations are continuously tightened to prohibit their use.

(2) emulsion degreasing method

Kerosine , Naphsa  After adding an emulsifier to the solvent, it was dispersed in water and emulsified (emulsified) Degreaser  Buy by heating Use .

in this case Degreasing  Alkali may be added to increase.

(3) electrolytic cleaning

Hydrogen or oxygen gas from the cathode or anode destroys the film of organic matter attached to the surface of the material and Stirring  Degreasing is performed mechanically.

(4) alkali washing method

alkali Degreaser  In addition to the solvent degreasing method, it is the most widely used in the degreasing process because of the low cost and the simplicity of the device.

Alkaline degreasing cleaners are generally Saponification ( Saponification , Safflower ), oil paint( Emulsion ), Dispersion( Dispersion One or a combination of concepts is used to perform the degreasing process.

Organic matter attached to the surface of the material is largely plant oil and Mineral oil  Can be distinguished.

Vegetable oil and alkali hydroxides such as caustic soda Saponification  It reacts, breaks down into soap (fatty acid) and glycerin, and both are water soluble so they can be easily removed by sufficient washing.

Mineral oil  Occation, By saponification  It is difficult to remove and is usually removed by emulsification, dispersion and precipitation.

Mineral oil  Removal is primarily by emulsifying (emulsifying) and dispersing the organics using a surfactant and then in an alkali compound. Silicon Dioxide ( SiO2 ), And the method of combining precipitation and removal are widely used.

When the surfactant is added to the alkali salt in the degreasing step, the interfacial tension of the oil is lowered to remove the fat or oil, which is firmly stuck, from the material, that is, the wet action.

The alkaline degreasing cleaner using the degreasing method of the above can be classified as follows according to physical properties and uses.

-Alkali Degreaser  : Alkali hydroxides such as caustic soda are mainly used, and organic matter is decomposed into glycerin and soap soluble in water. The most common degreasing method is mainly used to remove the vegetable organic material on the surface of the material, there is a problem that corrosion and iron hydroxide is formed when used on the metal surface.

-Alkali Degreaser  : Silicate  Salt is mainly used Mineral oil  Adsorption and separation. In this case, the oil Silicon Dioxide ( SiO2 Adsorption Sludge  There is a problem of generating precipitates.

-Alkali Degreaser  : Soda ash  Phosphates such as carbonates and soda Mineral oil  It is removed from the metal surface by dispersion and emulsification.

Conventional alkali degreasing cleaner NaOH , Na2CO3 , sodium silicate , Sodium phosphate  And the like have been selected and used in combination with a surfactant in consideration of the influence of physical properties.

上 記 alkali degreasing cleaner Clearly  The following conditions must be met.

(1) not only can dissolve fats and oils pH  It should be at least 8.3 solution.

(2) It should not be severely corrosive.

(3) Defensive  Should be good.

(4) The surface tension should be low.

Conventional degreasing cleaners mostly work at high temperatures, many bubbles are generated, and there are many problems in operation, and there are cases in which a process of removing bubbles is performed separately.

Accordingly, the present invention relates to an alkali degreasing cleaner for cleaning organic materials and other contaminants on a surface of a material, and to a degreasing cleaner that removes oil and other contaminants in a short time at low temperature and suppresses bubble generation to improve workability. .

In the present invention, to remove various organic components and contaminants on the surface of the material Saponification Excellent cleaning ability by using all kinds of adsorption, penetration, dispersion, etc., can be used at low temperature, and Low  multi-purpose alkaline degreasing cleaner that shows excellent degreasing ability of foaming) Mineral oil  Medium alkali degreasing cleaner for removal, corrosion of metal surfaces and Sludge  An attempt was made to make an alkali degreasing cleaner that solved problems such as precipitation.

上 記 cleaner Clearly  Low temperature use and Foamability ( Low foaming ) Is a degreasing cleaner that improves workability.

The technical problem to be achieved by the present invention is further subdivided as follows.

One. Saponification Multipurpose degreasing cleaning effect using synthetic, dispersion and wetting

2. Low temperature use and Foamability ( Low foaming Work environment improvement effect

3. anti-corrosion effect

4. Removal effect of other pollutants other than fats and oils using surfactant component

Therefore, the present invention was prepared by mixing the following composition to achieve the above technical problem.

Saponification  Instead of caustic soda Potassium Hydroxide Using existing Degreasing power  The goal was to reduce corrosion and toxicity while remaining intact.

Saponification  Difficult to remove by reaction Mineral oil  To remove it, Permeable  Superior sody Sodium  metasilicate 5 hydrates  The addition was intended to remove the oil by dispersion and adsorption.

Phosphates that are excellent in cleaning and dispersibility Potassium Pyrophosphate pyrophosphate), in this case Steel  The effect of suppressing alkali corrosion and the like could also be expected.

Apart from the degreasing cleaner components, the production of iron oxide and iron hydroxide on the metal surface becomes a problem due to corrosion or the like. Silicon Dioxide ( SiO2 If the alkali degreasing cleaner is difficult to use, Sodium Tripolyphosphate use with Mineral oil  弱 Alkaline degreasing cleaner was prepared to remove oil by dispersion emulsification.

Degreasing agents of the present invention is a low foaming non-ion (Nonion) -based and part of the component in order to reduce the interfacial tension of the oil in common to wet the action to remove organic matter or dust from the material The Alkylether carboxylate series substituted with an anion was used to improve the workability when degreasing agent was used, and relatively bubbles were generated by using Dodecylbenzenesulfonic acid sodium salt, an anionic surfactant, which is excellent for removing other contaminants other than organic matter. An alkali degreasing cleaner having little and excellent cleaning power was produced.
Here, the alkylether carboxylate generally refers to a polyoxyalkylene carboxylate in which a polyoxyalkylene ether is partially substituted with an anion, and the structural formula thereof is as follows.
RO- (CH ₂ CH ₂ O) nCH ₃ COONa
Here, R is C _n H _2n +1 and n is an integer of 5-12.

More specifically with respect to the configuration and operation of the present invention Degreaser  If the mixing ratio and content of each component constituting the basis of the injected mass as follows.

Saponification  To remove organic components by reaction Potassium Hydroxide (Based on 95% by weight) was used as a composition of the vegetable oil removal and the basic degreasing liquid by adding a total of the degreaser 100 within the range of 10% by mass.

Saponification  Difficult to remove by reaction Mineral oil  Sodium silicate salts for removal, Permeable  Excellent Sodium metasilicate 5-hydrate ( Silicon Dioxide Content of 28% by weight) Degreaser  100 was added within 20% by mass in consideration of the uniformity of the viscosity and the degreasing agent to remove organic matter by dispersion and adsorption.

Next, phosphates with excellent cleaning and dispersibility Potassium pyrophosphate (Based on 98% by weight) was added to the total degreaser 100 within 10% by mass based on the viscosity and the like, in this case Steel  The effect of suppressing alkali corrosion and the like could also be expected. In the case of surfactants to lower the surface tension of organics and other contaminants, castle ( Low foaming Nonion series of) and part of the component is replaced by anion Alkylether carboxylate  Excellent for removing contaminants other than series and organics Anion is a surfactant Dodecylbenzenesulfonic acid  sodium salt (50% by weight) Degreaser  Within 100% of each mass by 100 Bubble occurrence section  The dosage was determined in consideration of the uniformity of the final product.

In this way, the amount of distilled water was determined so that the total deodorant was 100 based on mass by using distilled water.

上 記 Degreaser  In the mixing ratio and content of each component constituting the Mineral oil  Alkali in order to remove chemicals and other contaminants and to prevent corrosion and degreasing agent toxicity Degreaser  If manufacturing Potassium  No hydroxide was added.

In addition, the corrosion of metal surfaces and Sludge  Due to the impact of sediment formation Potassium Hydroxide Wow Sodium  metasilicate 5 hydrates  弱 alkali difficult to use Degreaser  If manufacturing Sodium  Tripolyphosphate (based on 53% by weight of P2O5) Degreaser  100 was used to prepare the degreasing cleaner by determining the dosage within 20% by mass.

Hereinafter, the present invention will be described in detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.

Example 1

Alkylether carboxylate 3.5 Potassium Hydroxide (95% by weight) 2.5 Distilled water 78 Potassium pyrophosphate (98% by weight) 5 Dodecylbenzenesulfonic acid sodium salt (50% by weight) 6 Sodium metasilicate 5-hydrate ( Silicon Dioxide 28% by weight) 5 Total 100

Example 1 is to remove various oil components and contaminants on the surface of the material Saponification It can be used at low temperature by comprehensive use of adsorption, penetration, dispersion, etc. Foamability ( Low foaming Multi-purpose alkaline degreasing cleaner exhibiting excellent degreasing cleaning ability)) As a representative example, the preparation method is as follows.

Potassium Hydroxide (based on 95% by weight), Potassium Pyrophosphate (based on 98% by weight) and Sodium Metasilicate pentahydrate (based on 28% by weight of Silicon Dioxide) are added to distilled water and dissolved by stirring for 10 to 20 minutes to make the whole homogeneous. .

In this case, heat is generated during the dissolution process, so be careful and dissolve it sufficiently.

Next, Alkylether carboxylate, which is a non-ion-based non-foaming (low foaming) and partially substituted with anions, is added and dispersed with stirring at room temperature for 5 to 10 minutes.

Finally, Dodecylbenzenesulfonic acid sodium salt (50% by weight), which is an anionic surfactant having excellent removal ability to remove other contaminants other than organic matter, was added thereto, and stirred for 30 minutes to 1 hour to prepare a final alkali degreasing cleaner.

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Stirrer is common Stirring  The propeller type stirrer was installed in the motor and used.

The final product thus produced had a white opaque homogeneous phase.

Example 2

Alkylether carboxylate 3.5 Distilled water 75.5 Potassium pyrophosphate (98% by weight) 5 Dodecylbenzenesulfonic acid sodium salt (50% by weight) 6 Sodium metasilicate 5-hydrate ( Silicon Dioxide 28% by weight) 10 Total 100

Example 2 Mineral oil  Medium alkali degreasing cleaner for removal, Mineral oil Silicon Dioxide ( SiO2 Removed by adsorption and precipitation on the components, can be used at low temperatures Foamability ( Low foaming ) Is an example of a degreasing cleaner.

in this case, Potassium Hydroxide By not using to reduce the corrosion and toxicity on the metal surface.

Other manufacturing methods were applied to the method of Example 1 as it is.

Example 3

Alkylether carboxylate 3 Sodium Tripolyphosphate ( P2O5  53% by weight) 10 Distilled water 81 Dodecylbenzenesulfonic acid sodium salt (50% by weight) 6 Total 100

Example 3 is an example of an alkali degreasing cleaner, which disperses mineral oil when the alkaline alkali degreasing cleaner cannot be used due to the corrosion of a metal surface or the middle alkali degreasing cleaner is not available due to the formation of a sludge deposit. It is an example of the degreasing cleaner which removes from a metal surface by emulsification. Other preparation methods were different from those of Example 1 except that Sodium Tripolyphosphate was used instead of Potassium Hydroxide (based on 95% by weight), Potassium Pyrophosphate (based on 98% by weight) and Sodium Metasilicate pentahydrate (based on 28% by weight of Silicon Dioxide). The method was applied as it is.

As described above, the alkaline degreasing cleaner of the present invention is used to remove various organic components and contaminants from the surface of the material. Saponification It shows excellent degreasing and cleaning ability by comprehensively using degreasing concept such as saponification, saponification, adsorption, infiltration, dispersing, etc. and wetting effect of surfactant. You can expect the effect.

Claims (4)

0-10% by weight of Potassium Hydroxide (based on 95% by weight), 1-20% by weight of Sodium metasilicate pentahydrate (based on 28% by weight of Silicon Dioxide), 1-10% by weight of Potassium pyrophosphate (based on 98% by weight), 0.1-10% by weight of polyoxyalkylene carboxylate surfactants, which are nonionic and partially substituted with anions, 0.1-10% by weight of Dodecyl benzenesulfonic acid sodium salt (based on 50% by weight), and the rest An alkali degreasing cleaner composition containing water. The alkaline degreasing detergent composition of claim 1, wherein the alkali degreasing detergent composition is free of (0 wt%) Potassium Hydroxide (based on 95 wt%). 1-20% by weight of sodium tripolyphosphate (based on 53% by weight of P2O5), 0.1-10% by weight of a nonionic, polyoxyalkylene carboxylate surfactant in which some of its components are replaced by anions, and Dodecylbenzenesulfonic acid sodium salt (50 Alkali degreasing detergent composition, characterized in that it contains 0.1-10% by weight of the anionic surfactant, and the rest water. Dissolving by adding Potsssium Hydroxide, Sodium metasilicate and Potassium pyrophosphate to distilled water; Dissolving the polyoxyalkylene carboxylate which is a nonionic surfactant, Next, an alkali degreasing cleaner manufacturing method comprising the step of dissolving Dodecylbenzenesulfonic acid sodium salt which is an anionic surfactant.