KR20060101838A - Paint composition containing hwangto and maekbanseok - Google Patents

Abstract

The present invention relates to a composition of environmentally friendly indoor paints and a method for manufacturing the same, and more particularly, 0.1 to 0.5 wt% of a surfactant which serves to disperse it in water to an insoluble acrylic resin forming monomer, and acrylic The content of the polymerization initiator for the polymerization reaction of the emulsion-forming composition is 0.001 to 0.5w% based on the total weight of the acrylic emulsion-forming composition to prepare a solvent for paint without release of formaldehyde and volatile organic compounds, and then solvent Based on 250cc, 120g of 2μm-10μm powder for ocher and 150g of 5μm-20μm powder for elvan are added, and the auxiliary material is titanium dioxide within 30% of the total solids. , Talc and calcium carbonate are mixed at a ratio of 1: 0.5: 0.5, respectively, and an environmentally friendly seal containing an industrial fragrance emitting a fragrance in the range of 0.5-1.0 vol%. For the paint composition and a process for their preparation. Eco-friendly indoor paint according to the present invention is a human-friendly paint that does not emit any formaldehyde and volatile organic compounds at all, does not show harmful substances, emits a fresh fragrance, and has excellent adhesiveness, workability, and concealability. And it has the advantage of low price compared to the existing interior paint.

Ocher, elvan, paint, formaldehyde, talc, calcium carbonate

Description

Paint composition containing hwangto and maekbanseok

1 is a microstructure photograph of the loess powder used.

Figure 2 is a microstructure photograph of the elvan rock powder used.

3 is a photograph after application of the prepared paint, the left side is the case of ocher paint and the right side is the case of elvan paint.

As the quality of life has recently improved, interest in the environment has increased, and the concept of cleanliness of indoor air has emerged, and the human body has been proved to be harmful by human harmful substances generated from various interior finishes. In order to solve the problem that is problematic, environmentally friendly and harmless paint products as interior finishing materials are required.

Most building materials used indoors contain hazardous chemicals. In particular, with the increase in the use of building mother-of-pearl containing chemicals in terms of mass production and cost, the environment of indoor air quality is worsening. In recent years, the trend of building materials has been human-friendly, possessing new functions, showing versatility, and demanding materials that can maximize its effectiveness. In particular, in the case of architectural paints, new physical properties are required in terms of color, smell, and human benefits (antibacterial, deodorant, far-infrared, anion, etc.) in accordance with the modernization and human-friendly elements of buildings.

That is, not only the function of the exterior wall protection function and the exterior decoration of the conventional paint, but also the odorless, environmentally friendly and multi-functionality that is beneficial to the human body is required. In particular, the domestic paint industry is one of the representative pollution industries that occupies a huge environmental pollution load of 50% of the total emissions of domestic volatile organic compounds (VOCs). In order to escape from such indoor pollution, the Ministry of Environment established the Indoor Air Quality Control Act since April last year, and has been taking measures to regulate toxic organic compounds (VOCs) for paints used indoors, among which volatile organic compounds (VOCs) and Formaldehyde is defined as an important measurement item. As a result, the domestic market of eco-friendly paints is on the rise, and the demand for eco-friendly ceramic paint products is increasing in line with the increasing trend of eco-friendly paints imported from Germany and the United States.

Introduces paint solvents with low volatile organic compounds (VOCs) of 0.1 ppm or less, odorless or fragrant, excellent antibacterial, deodorant and far-infrared radiation characteristics (more than about 85% of black body) Develop human-friendly interior paints with cost and easy construction.

For the production of such indoor paints, the interaction between the paint solvent and the ceramic solids is considered, the function of the ceramic solids to be introduced is analyzed, the formulation ratio is established, and additives are added to improve the function.

As solids, two types of indoor paints, mainly ocher and elvan, are prepared.They analyze the properties of the paints and compare them with existing indoor paints, as well as toxic and concealment tests. Manufactures environmentally friendly indoor paints that have completely eliminated the toxicity from indoor paints.

Environmentally friendly paint production method for achieving the object of the present invention is

-Developing human-friendly organic solvent for paint that minimizes volatile organic compounds (VOCs) to 0.1 ppm or less by greatly reducing unreacted monomers in synthetic resin emulsions used as paint solvents.

-Applying natural-friendly ceramic solids that are harmless to human body and do not contain harmful chemicals suitable for organic solvents for special paints

-Introducing a pollution-free ceramic component beneficial to the human body that emits large amounts of antibacterial, deodorant and far infrared rays

-Manufacturing paint that can provide a pleasant environment using chemical auxiliary materials for odorless or fragrance.

-Strengthening the paint function by developing additives for non-toxic experiments, physical property tests and additional functions of the manufactured paints

It includes.

1. Preparation of paint solvents for reducing formaldehyde content and volatile organic compounds (VOCs) content

In order to solve the problems including formaldehyde and harmful substances generated in the materials used in the resin polymerization process or the paint mixing process, first, a surfactant is used to disperse the water in the monomer for forming an insoluble acrylic resin in the reaction vessel. A small amount was added, and the composition for acrylic emulsion formation containing a polymerization initiator and a solvent was supplied, and polymerization reaction was performed. The content of the dispersant is preferably 0.1 to 0.5 wt% based on the total weight of the acrylic emulsion-forming composition. If the content of the dispersant is more than 5 w%, the particle reduction effect is insignificant, and less than 0.1 w%. Note that the particle size will be rather larger. The polymerization initiator is a substance which plays a role of initiating the polymerization reaction of the acrylic emulsion-forming composition. The content of the polymerization initiator is 0.001 to 0.5% by weight based on the total weight of the acrylic emulsion-forming composition. In terms of reactivity of the reaction has resulted in undesirable results. A viscosity modifier and a solvent were applied to change the viscosity or to change the turbidity (color). Viscosity modifiers can be any material that can contribute to the viscosity control generally used. The acrylic emulsion resin prepared by the above method had stable alkaline (pH 8.0-9.0) and was able to form a room temperature film. Properties of the prepared paint solvents are shown in Table 1 below.

Table 1. Properties of Aqueous Acrylic Emulsion Resin

In addition, the test results for the formaldehyde content, volatile organic compounds (VOCs) content and emissions of harmful substances are shown in Tables 2, 3 and 4, respectively.

Table 2. Formaldehyde Emission Test

Table 3. Volatile Organic Compound Release Test

Table 4. Hazardous Substance Release Test

As shown in the above results, the prepared organic solvent for paint has almost no formaldehyde emission amount, and since volatile organic compounds and eight harmful substances are not all detected within the allowable range, it can be seen that the solvent can be used as an environmentally friendly paint solvent.

2. Interaction with Paint Solvents by Ocher and Elvan

To the acrylic emulsion resin prepared by the above method, as a solid, ocher and elvan were added as main solids, which are easy to purchase, inexpensive, and have no harmful substances and toxicities and exhibit various functions. In addition to the main solids, TiO ₂ powder and talc and calcium carbonate were added.

One). Ocher as the main solid paint

In the case of paint containing mainly ocher, it was used as main solid content of indoor eco-friendly paint, taking advantage of the feature of ocher, highlighting its color and easily available locally. First, ocher was added to the prepared paint solvent, and the change in the viscosity of the paint according to the added amount was examined. In addition, the microstructure of the used ocher powder was examined through an electron microscope. The microstructure photograph of the loess powder is shown in FIG. 1, and the change in viscosity according to the amount of ocher added is shown in Table 5.

Table 5. Viscosity Change of Paint by Addition of Loess Powder

(Changes due to the weight change of ocher powder added to 250 cc of solvent)

In the case of ocher powder, a very fine powder size of 2 μm-10 μm was observed, and the viscosity increased with addition to the solvent. Since about 1500 cps of the general indoor paint viscosity shows good results in terms of workability, the content of the loess was controlled to adjust the final viscosity of the paint to 1500-1600 cps. In this study, 120 g of loess was added based on the amount of solvent 250 cc, since the viscosity increase due to the addition of auxiliary materials (TiO ₂ powder, talc and calcium carbonate) added to loess should also be considered.

2). Paints based on elvan

In the case of paints based on ocher, the color of ocher is shown in terms of color, and it is difficult to express various colors according to consumer's needs, and ganbanite is used as the main solid for new paints that can facilitate color change. A paint was prepared. As in the case of loess, the experiment was performed while varying the amount of elvan rock added to the solvent. The viscosity change and the microstructure of the used elvan rock powder are shown in Table 6 and FIG. 2, respectively.

Table 6. Viscosity Change of Paint by Addition of Elvan Powder

(Changes due to the weight change of ocher powder added to 250 cc of solvent)

In case of elvan, powder size of 5μm-20μm was shown, and the viscosity increased with addition to the solvent. Compared with the addition of yellow soil, the increase in viscosity was not large, and thus a relatively large amount of solids was added. In order to achieve a final viscosity of about 1500 cps, 150 g of gantherite was added based on the amount of solvent 250 cc.

3. Improvement of properties by adding TiO ₂ or auxiliary materials

The properties and advantages of the paint obtained by the addition of auxiliary materials including TiO ₂ are as follows.

-Control of workability due to viscosity increase

-Cost saving of products due to relative low price

-All white powder, increasing the whiteness of the paint

-Increased concealment rate due to light reflection

Addition of auxiliary materials is essential for the above reasons, and the physical properties of auxiliary materials including TiO ₂ are shown in Tables 7, 8, and 9, respectively.

Table 7 Properties of Used TiO ₂ Powder

Table 8. Physical Properties of Used Talc Powders

Table 9. Physical Properties of Calcium Carbonate Powder Used

All three auxiliary materials showed a white color, and with the addition of these auxiliary materials, the viscosity of the paint increased as well as the color became white. However, the addition of ocher did not significantly deviate from the original color of the ocher, and the addition of elvan showed color change from gray to pale gray close to white.

4. Elimination of paint odor with fragrance

In the case of the paint produced by the above method, there is no release of harmful components to the human body, but it exhibits a slight smell of ammonia system, and thus the removal of the smell is required for indoor use. In order to remove the odor, an industrial flavor (for water paint) was used to add the paint within a range that does not affect the physical properties of the paint. When the industrial flavor of pine is added, the change according to the addition amount is shown in Table 10.

Table 10. Odor changes of paints by adding industrial flavors

In consideration of the price of industrial fragrances, a minimum amount of ammonia-free addition was selected and applied to the paint within the range of 0.5-1.0 vol%. After application, the ammonia odor was completely eliminated and a light pine scent, almost odorless, appeared.

5. Control of Paint Properties by Mixing Ratio of All Solid Components and Solvents

In the present invention, the addition ratio of the solvent and the solid content was determined accordingly so that the viscosity of the paint was 1500-1600 cps, and the mixing ratio of the loess and the auxiliary material, the elvan and the auxiliary material was about 70:30 by weight ratio. Was maintained. In the case of auxiliary materials, the mixing ratio of TiO ₂ , talc, and calcium carbonate was added at a weight ratio of 100: 50: 50, respectively. Eco-friendly paint prepared by the mixing ratio as described above satisfies all the basic conditions that the paint should have, the physical property test results are shown in Table 11.

Table 11. Property Test Results of Prepared Paints

After applying the prepared ocher paint and elvan paint on a general building material, the photo is shown in FIG.

In order to develop environmentally friendly indoor ceramic paints, natural mineral powder was added to the acrylic resin developed in-house and harmless to the human body. The development of acrylic emulsion resins has eliminated formaldehyde, completely eliminated the harmful substances of the eight heavy metals, and established a technology for producing environmentally friendly paint solvents with a low volatile organic compound content of less than 0.1 ppm. Invented indoor paints, which are harmless to humans and have beneficial functions by adding ocher and elvan, which have high far-infrared emissivity and excellent antibacterial and deodorizing ability as solids.

Due to the present invention, the interest in building materials such as sick house syndrome increases due to the government's regulation on the environmental part of building materials or the improvement of the standard of living. Above all, imported and imported on behalf of the insignificant domestic eco-friendly paint market. It will bring a replacement effect of eco-friendly paint.

Claims (2)

0.1 to 0.5 wt% of a surfactant, which serves to disperse it in water, is added to the insoluble acrylic resin forming monomer, and the content of the polymerization initiator for the polymerization reaction of the acrylic emulsion forming composition is based on the total weight of the acrylic emulsion forming composition. Method for producing paint solvent without release of formaldehyde and volatile organic compounds by setting it as 0.001 ~ 0.5w% Based on the solvent 250cc, 120g of 2μm-10μm powder for ocher, 150g of 5μm-20μm powder for elvan is added, and the auxiliary material contains titanium dioxide within 30% of the total solid. A composition of an environmentally friendly indoor paint containing a mixture of um, talc, and calcium carbonate at a ratio of 1: 0.5: 0.5, respectively, and containing an industrial fragrance emitting a fragrance within a range of 0.5-1.0 vol%.

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