KR100894446B1 - The method of manufacturing aqueous painting composite with water resistance - Google Patents

Abstract

A manufacturing method for water-soluble water-proof paint with excellent elasticity is provided to show excellent water resistance, weather resistance, alkali resistant and durability while securing storage stability and workability. A manufacturing method for water-soluble water-proof paint with excellent elasticity comprises the following steps of: charging a reactor with the 1-5 parts of water and the 0.01-0.05 part of cellulose thickener and stirring the contents of the reactor at 1200-1300 rpm to thicken the contents with the 0.01-0.05 part of ammonium hydroxide; adding the 0.1-0.8 part of propylene glycol, the 0.1-0.5 part of dispersing agent and the 2-8 parts of chrome oxide to the reactor and dispersing the contents with a 3-step roller for 15-25 minutes three to six times; adding the 30-60 parts of acrylic emulsion resin and the 1-3 parts of water; additionally adding the 20-40 parts of calcium carbonate, the 1-5 parts of talc, the 0.5-2 parts of texanol, the 0.1-0.3 part of water repellent, the 0.1-0.5 part of mineral oil and the 0.01-0.1 part of antiseptic while stirring the contents at 800-1000 rpm in order to tone the paint for 25-35 minutes; and controlling viscosity by adding the 0.2-0.8 part of water and the 0.05-0.3 part of the urethane thickening agent.

Description

The method of manufacturing aqueous painting composite with water resistance}

The present invention relates to a method of manufacturing a water-soluble waterproof coating, and more particularly, to remove a harmful component to the human body, and to produce a water-soluble waterproof coating excellent in waterproofing, weather resistance, alkali resistance, durability and excellent storage stability and workability of the paint at the same time. It is about a method.

In general, the exterior and interior walls of cement structures are mainly decorated with paints in consideration of environmental and aesthetic aspects. Also, due to the development of chemical engineering, paint compositions are gradually being replaced by environmentally friendly materials. Water-based paint, which is painted on the interior wall of a building's residential space, is simply used as a coating on the cement wall to give an aesthetic effect. Recently, water-soluble paints with additional crack prevention functions are required in addition to basic performance in consideration of improved quality of life, stability of the living culture, and health.

Conventional water-soluble paints are based on KS standards, but satisfy the basic performance, but its function is crude. Therefore, it is necessary to add functionality such as waterproofness, weather resistance, durability and elasticity to the aqueous coating.

Recently, as the quality of life is improved, the importance of stability and health of the living culture is important, and therefore, a technology that can solve indoor air pollution by volatile organic compounds (VOC), which is harmful to the human body, is needed. Conventional waterproofing paints are designed and produced with oil-based paints to satisfy basic performance, but lack of environmentally friendly performance due to insufficient or lacking regulations on volatile organic compounds (VOC) that cause sick house syndrome. Therefore, it is required to develop products that meet the eco-friendly certification standards by minimizing or replacing VOC content in roofing waterproofing paints.

The present invention is to provide a method for producing a water-soluble coating composition excellent in elasticity that is excellent in water resistance, weather resistance, durability and at the same time excellent in elasticity to prevent the micro-cracks due to the expansion and contraction of the building.

The present invention to solve the above technical problem,

1 to 5 parts by weight of water was added to the stirrer, followed by adding 0.01 to 0.05 parts by weight of cellulose thickener, stirring at a speed of 1200 to 1300 rpm, and thickening to 0.01 to 0.05 parts by weight of ammonium hydroxide (step S1), and propylene glycol 0.1 to the stirrer. To 0.8 parts by weight, 0.1 to 0.5 parts by weight of dispersant and 2 to 8 parts by weight of chromium oxide (chromium oxide) to disperse three to six times in a three-stage roller for 15 to 25 minutes (step S2), and in the stirrer 30 to 60 parts by weight of an acrylic emulsion resin, 1 to 3 parts by weight of water, 20 to 40 parts by weight of calcium carbonate, 1 to 5 parts by weight of Talc, and 0.5 to 10% by weight of Texanol while stirring at a speed of 800 to 1000 rpm. 2 parts by weight, 0.1 to 0.3 parts by weight of water repellent, 0.1 to 0.5 parts by weight of mineral oil, 0.01 to 0.1 parts by weight of preservatives are added to colorize for 25 to 35 minutes (step S3) and 0.2 to water Water-soluble waterproof coating, characterized in that it comprises the step of adjusting the viscosity by adding a mixture consisting of 0.8 parts by weight and 0.05 to 0.3 parts by weight of a urethane thickener evenly divided into three times by weight based on the reactor (S4 step). It provides a manufacturing method.

According to one embodiment of the invention, the preservative may be 1,2-benzisothiazolin-3-one (1,2-Benzisothiazolin-3-one).

According to another embodiment of the present invention, the mineral oil may contain minerals, nonionic surfactants and fatty acids.

According to the manufacturing method of the water-soluble waterproofing paint according to the present invention, it is possible to obtain a water-soluble waterproofing coating which is excellent in water resistance, weather resistance, alkali resistance and durability, and at the same time storage stability and workability of the harmful substances to the human body.

Hereinafter, the present invention will be described in more detail.

1 to 5 parts by weight of water was added to the stirrer, followed by adding 0.01 to 0.05 parts by weight of cellulose thickener, stirring at a speed of 1200 to 1300 rpm, and thickening to 0.01 to 0.05 parts by weight of ammonium hydroxide (step S1), and propylene glycol 0.1 to the stirrer. To 0.8 parts by weight, 0.1 to 0.5 parts by weight of dispersant and 2 to 8 parts by weight of chromium oxide (chromium oxide) to disperse three to six times in a three-stage roller for 15 to 25 minutes (step S2), and in the stirrer 30 to 60 parts by weight of an acrylic emulsion resin, 1 to 3 parts by weight of water, 20 to 40 parts by weight of calcium carbonate, 1 to 5 parts by weight of Talc, and 0.5 to 10% by weight of Texanol while stirring at a speed of 800 to 1000 rpm. 2 parts by weight, 0.1 to 0.3 parts by weight of water repellent, 0.1 to 0.5 parts by weight of mineral oil, 0.01 to 0.1 parts by weight of preservatives are added to colorize for 25 to 35 minutes (step S3) and 0.2 to water The mixture consisting of 0.8 parts by weight and 0.05 to 0.3 parts by weight of a urethane thickener is added to the reactor in equal parts by weight and added in three portions to adjust the viscosity (step S4).

First, in the step S1, 1 to 5 parts by weight of water is added to the stirrer, and then 0.01 to 0.05 parts by weight of cellulose thickener is added and stirred at a speed of 1200 to 1300 rpm and thickened to 0.01 to 0.05 parts by weight of ammonium hydroxide.

The water is used as a common solvent and the amount is 1 to 5 parts by weight, if it is out of this range may cause difficulty in dispersion.

The cellulose is used as a thickener and its amount is 0.01 to 0.05 parts by weight. If less than 0.01 parts by weight, the thickening may be insignificant. On the contrary, when the amount is over 0.05 parts by weight, the cellulose may be excessively required to add water, thereby deteriorating physical properties. Can be.

The ammonium hydroxide is used to adjust the acidity (pH) and its amount is 0.01 to 0.05 parts by weight. If it is less than 0.01 parts by weight, it is difficult to maintain the pH of 8 to 10, on the contrary, if it exceeds 0.05 parts by weight, the viscosity is increased. It can be difficult to adjust.

In addition, the stirring speed in the step S1 maintains a speed of 1200 to 1300rpm, if less than 1200rpm may not uniformly proceed with stirring and mixing, on the contrary, if it exceeds 1300rpm can be difficult to pack the packaging.

On the other hand, the thickening of the step S1 is to make the dispersion uniform so that the reaction proceeding in the subsequent process is smooth.

Next, in the step S2, by adding 0.1 to 0.8 parts by weight of propylene glycol, 0.1 to 0.5 parts by weight of dispersant, and 2 to 8 parts by weight of chromium oxide, 3 to 3 rollers for 15 to 25 minutes. Dispersion six times.

The propylene glycol is used in consideration of storage stability, if less than 0.1 parts by weight, may adversely affect the storage stability, on the contrary, if it exceeds 0.8 parts by weight, it may cause unnecessary resource waste and increase the manufacturing cost.

The dispersant may be used in an amount of 0.1 to 0.5 parts by weight, but if less than 0.1 part by weight, poor coagulation may occur.

The chromium oxide is used for the expression of the color is used is 2 to 8 parts by weight. If the content is less than 2 parts by weight, the appearance of color may be insignificant. On the contrary, if the content is more than 8 parts by weight, it may cause deterioration of physical properties.

Dispersion in this step S2 is carried out in a process of dispersing three to six times with a three-stage roller for 15 to 25 minutes, the three-stage roller performs a uniform dispersion of the mixture, if less than three times the uniform dispersion is On the contrary, if it exceeds 6 times, the dispersion may be excessive and the color and gloss may be changed, and the manufacturing time may be long.

Next, in the step S3, 30 to 60 parts by weight of the acrylic emulsion resin and 1 to 3 parts by weight of water are added to the stirrer, and 20 to 40 parts by weight of calcium carbonate while stirring at a speed of 800 to 1000 rpm, Talc 1 to 5 parts by weight, 0.5 to 2 parts by weight of Texanol, 0.1 to 0.3 parts by weight of water repellent, 0.1 to 0.5 parts by weight of mineral oil, and 0.01 to 0.1 parts by weight of preservative are added to colorize for 25 to 35 minutes.

The acrylic emulsion resin is used as a binder is used in the amount of 30 to 60 parts by weight, if out of this range may cause difficulties in the role of the binder.

The water is used in 1 to 3 parts by weight, because it is used for the control of the viscosity, if less than 1 part by weight may be difficult to control the viscosity, on the contrary, if it exceeds 3 parts by weight, the viscosity is lowered to further use the thickener This can adversely affect the physical properties of the paint composition itself.

In addition, the calcium carbonate is used to maintain the thickness of the coating film is used in the amount of 20 to 40 parts by weight, if less than 20 parts by weight of the coating composition is actually used to reduce the thickness of the coating film may cause repeated coating On the contrary, if it exceeds 40 parts by weight, the strength of the coating film may be reduced.

The talc may be used in an amount of 1 to 5 parts by weight, and if it is less than 1 part by weight, it may be difficult to maintain the thickness of the coating film. It may lower and the coating may weaken.

The texanol is used to form a coating film, and its amount is 0.5 to 2 parts by weight. If it is used below 0.5 parts by weight, it may be difficult to form a coating film. When formed, a separate film may be formed to prevent the coating composition from forming.

In addition, the amount of the water repellent is 0.1 to 0.3 parts by weight, if less than 0.1 parts by weight of the water repellent effect may be insignificant, on the contrary 0.3 parts by weight may adversely affect the physical properties of the paint composition or increase the manufacturing cost Can be.

On the other hand, the mineral oil is used to remove bubbles generated in the paint composition, the amount of use is 0.1 to 0.5 parts by weight, if less than 0.1 parts by weight of the effect may be insignificant, if it exceeds 0.5 parts by weight of the paint composition It may adversely affect the physical properties and may be disadvantageous to the manufacturing cost.

The mineral oil may contain minerals, nonionic surfactants and fatty acids.

In addition, the preservative is used 0.01 to 0.1 parts by weight, if out of this range may adversely affect the physical properties of the paint composition or may lead to an increase in manufacturing cost.

Here, the acrylic emulsion resin and water are added to the stirrer, and calcium carbonate, talc, texanol, water repellent, mineral oil, and preservatives are further added and stirred for 25 to 35 minutes while stirring at a speed of 800 to 1000 rpm. If it is less than 800rpm, stirring may be difficult. On the contrary, if it exceeds 1000rpm, a large amount of bubbles may be generated, which may cause difficulty in packaging or using the product.

In addition, the color is carried out for 25 to 35 minutes, if less than 25 minutes, it may be difficult to agitate, on the contrary, if it exceeds 35 minutes, it may be difficult to control the color or gloss of the paint composition.

Next, in the step S4, a mixture consisting of 0.2 to 0.8 parts by weight of water and 0.05 to 0.3 parts by weight of a urethane thickener is added to the reactor in equal parts by weight and added in three portions to adjust the viscosity.

The water is used to control the viscosity, it is possible to use water supplied from the tap water, in particular distilled water, ionized water can also be widely used, the water here is different from the water in step S1, step S1 In the present invention, the viscosity is adjusted to facilitate pigment dispersion, whereas the final viscosity is adjusted in order to consider storage stability and workability. In addition, if the amount is 0.2 to 0.8 parts by weight, if less than 0.2 parts by weight, the viscosity is high, it is difficult to agitate or paint during the manufacturing process and the actual coating work, on the contrary, if it exceeds 0.8 parts by weight, there is a bad flow down during the actual coating May occur.

In addition, the urethane thickener prevents the occurrence of deposits when stored for a long time in consideration of the storage stability after the final process, and also prevents the occurrence of poor flow when the construction site in the actual construction site and adhesive strength after completion of construction It serves to give, the amount of use is 0.05 to 0.3 parts by weight. If less than 0.05 parts by weight, the color may not be uniform and may adversely affect the storage stability, on the contrary, if it exceeds 0.3 parts by weight, the viscosity may increase, which may cause difficulty in painting during actual construction.

Meanwhile, as described above, water and urethane thickeners are mixed and divided into three parts on a weight basis evenly. If this is added once or more, the properties such as solid content, pigment content, resin content, hiding rate, etc. Can be difficult to manage

Example 1

First, 3 parts by weight of water was added to the stirrer, 0.05 parts by weight of cellulose was added, and the mixture was stirred at a speed of 1300 rpm and thickened to 0.04 parts by weight of ammonium hydroxide. Next, 0.5 parts by weight of propylene glycol, 0.4 parts by weight of dispersant, and 5 parts by weight of chromium oxide were added to the stirrer and dispersed three times with a three-stage roller for 20 minutes. Next, 50 parts by weight of an acrylic emulsion resin and 3 parts by weight of water were added to the stirrer, while stirring at a speed of 1000 rpm, 30 parts by weight of calcium carbonate, 3 parts by weight of talc, 1 part by weight of texanol, and a water repellent (FC533) 0.2 Parts by weight, mineral oil (NXZ, manufactured by Novofo Co., Ltd.) 0.4, and 0.1 part by weight of 1,2-benzisothiazolin-3-one (1,2-Benzisothiazolin-3-one) as an antiseptic 30 Toning for minutes. Next, a mixture of 0.5 parts by weight of water and 0.2 parts by weight of urethane thickener (RM825) was added equally to the reactor in three portions by weight to prepare a water-soluble waterproof coating according to the present invention.

Experimental Example 1

The water-soluble waterproof coating prepared according to Example 1 was tested according to the experimental methods and specifications shown in Table 1 below, and the results are shown.

   Item     Experiment method    Test result    Remarks  Volume solids (%)     60-70  KSM 5000-03  Viscosity (Cp)  Brook Field Viscometer 25 ° C   50000 ~ 60000  KSM 5000-2122  Specific gravity (25 ℃)  100cc specific gravity cup   1.4 ± 0.2  KSM 5000-03  Drying time (25 ℃)  Touch  Set-to-touch   in 1 hour  KSM 5000-2511 (Based on wet coating thickness 500㎛)  Solidification  Dry hard   Within 8 hours  very  Full hardness   More than 24 hours  Water resistance  Distilled water 3 days immersion, swelling peeling     Good  KSM 5000-1121  Alkali resistance  Saturated Ca (OH) 2 solution, 3 days deposition     Good  KSM 5000-1121  Pollution resistance  Dilute Black Water Ink Contamination     Good  KPIS 3024  Adhesion  Slate Plate Cross Cutting    100/100  JIK 5600-5-6  Storage stability  More than 7 days     Good  KSM 5000-2031  Volatile Organic Compounds (VOCs)  : 75 g / L    Not detected  GC Method  Formaldehyde (HCHO)  Main test standard: Less than 0.12mg / ㎡h    Not detected  HPLC Method  Condition in container  Rivering, Skinning, Pigmentation     Good  KSM 5000-2111  Repaintable  Lifting, softening, crack or not Wet film thickness less than 500㎛     Good  KSM 5000-2421

Referring to <Table 1>, the water-soluble waterproof paint according to the present invention can be seen to remove the harmful components to the human body, waterproof, weather resistance, alkali resistance, durability and at the same time excellent storage stability, workability of the paint.

Claims (3)

Adding 1 to 5 parts by weight of water to the stirrer, adding 0.01 to 0.05 parts by weight of cellulose thickener, stirring at a speed of 1200 to 1300 rpm, and thickening to 0.01 to 0.05 parts by weight of ammonium hydroxide (step S1); 0.1 to 0.8 parts by weight of propylene glycol, 0.1 to 0.5 parts by weight of dispersant and 2 to 8 parts by weight of chromium oxide are added to the stirrer and dispersed 3 to 6 times in a three-stage roller for 15 to 25 minutes (S2 step). ); 30 to 60 parts by weight of acrylic emulsion resin, 1 to 3 parts by weight of water are added to the stirrer, and 20 to 40 parts by weight of calcium carbonate, 1 to 5 parts by weight of talc and texanol while stirring at a speed of 800 to 1000 rpm. 0.5 to 2 parts by weight, 0.1 to 0.3 parts by weight of water repellent, 0.1 to 0.5 parts of mineral oil and 0.01 to 0.1 parts by weight of preservatives are added to colorize for 25 to 35 minutes (step S3); And Adding a mixture consisting of 0.2 to 0.8 of water and 0.05 to 0.3 parts by weight of a urethane thickener added to the reactor in 1/3 units by weight to adjust the viscosity (step S4); water-soluble waterproof coating comprising a Manufacturing method. The method of claim 1, The preservative is a method for producing a water-soluble waterproof coating, characterized in that 1,2-benzisociazolin-3-one (1,2-Benzisothiazolin-3-one). The method of claim 1, The mineral oil is a method for producing a water-soluble waterproof paint, characterized in that containing minerals (mineral), nonionic surfactants and fatty acids.