KR950011503B1 - Process fir tge oreoaratuib of paint composition - Google Patents

Abstract

The pattern forming paint compsn. is prepd. by mixing : (a) 10-20 wt.% of vinyl butyral type resin comprising 70-80 wt.% of polyvinyl acetal and 1-10 wt.% of polyvinyl acetate and 10-25 wt.% of polyvinyl alcohol; (b) 1.5-12 wt.% of coloring asistant pigment; (c) 20-45 wt.% of isopropaol or ethanol; and (d) 30-53 wt.% of acetone, methanol or methylethyl ketone. In the process, 0.5 pts. of (a) component is mixed with (b) and (c); and other 0.5 pts of (a) is mixed with (d); then the obtd. two mixtures are mixed. The obtd. paint compsn. is coated by air-spray under 2.5-5.5 kg/cm2.

Description

Manufacturing method of pattern forming paint composition

The present invention relates to a method for manufacturing a pattern forming paint composition, and more particularly, a fast-drying solvent is dissolved in a high-density vinyl butyral resin, and has a uniform filament pattern when used in a general air spray method. It relates to a method for producing a one-part pattern forming paint composition to be formed.

Recently, with the development of life and the importance of free space, a new aesthetic paint that is easy to use while being able to apply solid colors or form stripes such as stripes in furniture, musical instruments or indoor spaces is required.

For this reason, liquid paints that form various patterns by spraying liquid paints by general air spray coating methods have been required. In the past, crack pattern paints and hammer coatings were used. It was inconvenient and difficult to make the desired pattern.

Therefore, the present invention is a paint composition in which a pigment, a dye, or a fast-drying solvent is mixed with a high molecular weight vinyl butyral resin, and a new pattern forming paint composition is formed by spraying a liquid coating by a general air spray coating method. The purpose of the present invention is to provide a method for preparing and applying the same.

Hereinafter, the present invention will be described in detail.

The present invention is to prepare a pattern forming paint composition comprising a vinyl butyral resin as (a) 70 to 80% by weight of polyvinyl acetal, 1 to 10% by weight of polyvinyl acetate and 10 to 25% by weight of polyvinyl alcohol. 10 to 20% by weight of vinyl butyral resin, (b) 1.5 to 12% by weight of pigment for pigmentation, (c) 20 to 45% by weight of isopropanol or ethanol, (d) acetone, methanol and methyl ethyl ketone 30 ˜53 wt.% Of the above (a) component is mixed with the (b) and (c) components, and the other half of the (a) component is mixed with the (d) component, and these It is characterized by a method for producing by mixing two mixtures together.

In addition, the present invention includes a method for applying a pattern forming paint composition, characterized in that the coating surface is coated by the air spray at a pressure of 2.5 to 5.5 kg / cm 3 produced by the pattern forming paint composition as described above. It relates to a method of applying the composition.

Referring to the present invention in more detail as follows.

The present invention relates to a manufacturing method of a filament paint to make a pattern like a yarn when spray coating by applying the sealing phenomenon of these resins using vinyl butyral-based resin, which will be described in detail with a high degree of polymerization of vinyl butyral (Vinyl) Butyral) resin is dissolved in a solvent such as acetone, methyl ethyl ketone, methanol, ethanol, isopropanol, which is a fast-drying solvent, to form a uniform filament pattern when coated with an air spray.

Looking at the manufacturing process of the pattern forming paint composition using a high degree of polymerization of vinyl butyral resin according to the present invention, put the vinyl butyral resin (half of the total amount) and a fast-drying solvent such as isopropanol or ethanol in a stirrer at 800 ~ 1200rppm After stirring for 2-3 hours to dissolve the vinyl butyral resin, a pigment for pigmentation is added, mixed for about 30 minutes, and then dispersed in a sand mill with a particle size of 10 μ or less to prepare a composition (A). .

Then, a vinyl butyral resin (the remaining half of the total amount used) and a quick-drying solvent selected from acetone, methanol, and methyl ethyl ketone are stirred for 2 to 3 hours using a stirrer to dissolve the vinyl butyral resin to prepare a composition (B). The composition (A) and (B) are mixed and stirred for about 30 minutes to prepare a paint composition.

As the vinyl butyral resin used in the present invention, for example, the brand names Mowital B-60H and Mowital B-70H manufactured by Hoechst, Germany can be used, especially when making the filament pattern thin and dense, B-60H is used, It is recommended to use Mowitac B-70H to make it thicker. Pigment used at this time may use a general pigment pigment.

In addition, in the present invention, the reason for dissolving the vinyl butyral resin in the filament paint manufacturing process by dissolving it twice with a fast-drying solvent and then mixing is isopropanol or the like during the preparation of the composition (A) to facilitate dispersion of the pigment used. The pigment is sufficiently dispersed by using a solvent having a low volatility such as ethanol and then mixed with the composition (B).

At this time, in the composition (H) to disperse the vinyl resin using a relatively volatile solvent such as acetone, methanol, methyl ethyl ketone and the like to facilitate filament formation.

Thus, the filament pattern forming paint composition according to the present invention can control the length and thickness of the pattern by the use method and mixed use of the solvent, especially when using a volatile solvent is long filament pattern.

On the other hand, the filament pattern forming paint according to the present invention is a natural-drying one-component paint, which can be painted by a general air spray method, and the spraying pressure during coating is also preferably 2.0 to 5.5 kg / cm 2. .

If the pressure is large or small at this time, the pattern formation is not made properly, especially when the pressure is too strong does not give a neat feeling of the formed pattern, if too weak, the pattern formation itself is not made.

As described above, the pattern forming coating composition prepared by the present invention is a liquid coating which forms a pattern of a yarn by spraying a liquid coating by a general air spray coating method, and has a high molecular weight vinyl butyral resin and a pigment. Or, because it is a liquid mixture by dyes and fast-drying solvents, this paint makes the pattern more vivid by the color of the undercoat and the color contrast of the filament paint, and gives the sense of Marble according to the color selection and the degree of pattern formation. .

In addition, the color may be tinted with a color paste on a transparent color and may also be tinted by preparing a paint blended with the color. It is easy to control the gloss from gloss to matt by the selection of top coat, and there is almost no discoloration as non-yellowing type.

In addition, if the coating step is followed, it can be applied to L / O urethane, A / A, U / P-based coating cyste. In other words, the paint composition of the present invention can uniformly distribute the filament pattern by a general air spray method, and has a feature that the size of the pattern can be freely adjusted only by adjusting the viscosity of the paint and the pressure of the air spray.

Hereinafter, the present invention will be described based on Examples.

Example 1

Preparation of Paint Composition for Forming Small and Medium Patterns

5 g of vinyl butyral resin D-60H (manufactured by Hoechst, Germany) and 25 g of isopropanol are stirred for about 2 hours with a stirrer at 800 to 1200 rpm to dissolve the vinyl resin. 12 g of pigment was added thereto, exchanged with a stirrer for about 30 minutes, and dispersed in a roll mill having a particle size of 10 μm or less.

On the other hand, 5 g of vinyl butyral resin B-60H and 53 g of methyl ethyl ketone are dissolved by stirring for about 2 hours, and then mixed with the above dispersion solution and finished by stirring for about 30 minutes with the same stirrer.

Example 2

Preparation of large pattern forming paint composition

5 g of vinyl butyral resin B-70H (manufactured by Hoechst, Germany) and 45 g of ethanol were stirred for 2 hours using a stirrer of 800 to 1200 rpm to dissolve the vinyl butyral resin, and then 12 g of pigment was added thereto to add about 30 After stirring for a minute, the particle size is dispersed to a particle size of 10 mu or less as a sand mill.

On the other hand, 5 g of vinyl butyral resin B-70H, 23 g of methanol, and 10 g of acetone were dissolved by stirring for 2 hours, and then the dispersed solution was mixed and mixed with the same stirrer for about 30 minutes to finish. do.

Example 3

Application of the pattern forming paint composition

Urethane enamel (black) was applied, and the pattern forming paint composition (white) was applied on it, and then urethane transparent paint was applied thereon.

All of the coating was in the air spraying by the usual pressure, in particular, the patterning coating composition was sprayed at a pressure of 5.0kg / ㎠.

Lacquer enamel (white) was applied and the pattern forming paint composition (white) prepared in Example 2 was applied thereon, and then lacquer transparent paint was applied in the same manner as in Example 3.

According to the above embodiment, the viscosity of the pattern forming coating composition according to the present invention is suitable for about 20 ~ 30Sec as Ford Cup # 4 at room temperature, and the size or shape of the pattern is changed by adjusting the viscosity by using a diluent. It was possible.

At this time, when the viscosity was low, the pattern was short and a dense pattern was formed.

In addition, the spray air pressure is 2.5 ~ 5.5kg / ㎠ when the coating of the pattern forming paint is appropriate and the size of the pattern was able to be adjusted. At this time, the lower the pressure, the longer the pattern.

Claims (2)

In preparing a pattern forming paint composition containing vinylbutyral resin as a main component, (a) a vinylbuty consisting of 70 to 80% by weight of polyvinyl acetal, 1 to 10% by weight of polyvinyl acetate and 10 to 25% by weight of polyvinyl alcohol. 10 to 20% by weight of LAL resin, (b) 1.5 to 12% by weight of pigment for pigmentation, (c) 20 to 45% by weight of isopropanol or ethanol, and (d) 30 to 53% by weight selected from acetone, methanol and methyl ethyl ketone % Is mixed, one half of the component (a) is mixed with the components (b) and (c), and the other half of the component (a) is mixed with the component (d), and then the two mixtures Method for producing a pattern forming paint composition, characterized in that by mixing together to prepare. A method of applying a pattern forming paint composition, characterized by coating the coating surface by air spraying at a pressure of 2.5 ~ 5.5 kg / ㎠.