KR102078970B1 - Oil-based stain composition using styrene-urethane alkyd resin and method for producing the same - Google Patents

Abstract

The present invention uses a styrene urethane alkyd resin to reduce the volatile organic compounds (VOC), improve the physical properties of the oily stains and quick drying to increase the ease of work and durability for wood resin composition for oily stains and a method for producing the same It is about.
The method of preparing the oily stain composition of the present invention comprises the first step of stirring in a ratio of 5-20 parts by weight of boiled linseed oil, 10-30 parts by weight of styrene urethane alkyd resin with respect to 100 parts by weight of the final blend, 0.1-1.5% by weight of a dispersant, and 0.2-defoamer. 2 weight ratio, dispersed pigment 4-15 weight ratio, antibacterial 0.1-1 weight ratio, ultraviolet absorber 0.1-2 weight ratio, anti-filming agent 0.1-0.4 weight ratio, drying agent 0.2-5 weight ratio and the second step of stirring and environmentally friendly solvent DMC (Dimethylcarbonate) 10-30 weight ratio, 20-40 weight ratio of solvent No. 1, and 10-35 weight ratio of acetone are added and stirred, and the third step is included.

Description

Oil-based stain composition using styrene urethane alkyd resin and method for producing the same

The present invention relates to a resin composition for oily stain and a method of manufacturing the same, and more particularly, to reduce volatile organic compounds (VOC) using styrene urethane alkyd resin, improve the properties of oily stain, and to make it easy to work with wood and fast drying The present invention relates to a resin composition for oily stain and a method for manufacturing the same, which can increase durability.

Stain is mainly used for painting to protect the appearance of wood. Stain is classified into oily stain and aqueous stain. Oil-based stain is used for painting on the exterior wood, and water-based stain is used on the interior wood.

Oily stains are widely used and do not dry quickly and require a long drying time. Although volatile organic compounds are frequently used to reduce the resin content for shortening the drying time, the reduction of volatile organic compounds (VOC) is becoming an issue in relation to environmental problems.

Korea Patent Registration No. 10-1738368 (2017.05.16.)

The problem to be solved by the present invention for solving the problems of the prior art described above is to reduce the volatile organic compounds (VOC), improve the properties of the oily stain and improve the ease of work and durability for wood by rapid drying It is to provide a resin composition for staining and a method of manufacturing the same.

The resin composition for oily stain according to the present invention is characterized in that it contains 5-20 parts by weight of boiled linseed oil, 10-30 parts by weight of styrene urethane alkyd resin as essential components based on 100 parts by weight of the final blend.

Preferably, the composition further comprises 10-30 parts by weight of the oleaginous alkyd resin based on 100 parts by weight of the final blend.

In addition, the manufacturing method of the resin composition for oily stain according to the present invention is a first step of stirring with 5-20 parts by weight of boiled linseed oil, 10-30 parts by weight of styrene urethane alkyd resin, and dispersant 0.1- with respect to 100 parts by weight of the final blend. 1.5 parts by weight, defoamer 0.2-2 parts by weight, dispersed pigment 4-15 parts by weight, antibacterial 0.1-1 parts by weight, UV absorber 0.1-2 parts by weight, anti-coat agent 0.1-0.4 parts by weight, desiccant 0.2-5 parts by weight The second step of the input and stirring, and 10-30 parts by weight of environmentally friendly solvent DMC (Dimethylcarbonate), 20-40 parts by weight of solvent No. 1, 10-35 parts by weight of acetone, characterized in that it comprises a third step.

Preferably, the first step is stirred for 10-20 minutes at 100rpm, the second step is stirred for 15-30 minutes at 600rpm, the third step is characterized in that the stirring for 10-15 minutes at 300rpm.

Preferably, the first step is characterized in that it further comprises 10-30 parts by weight of the oleaginous alkyd resin with respect to 100 parts by weight of the final blend.

The resin composition for oily stain prepared by the present invention has the advantage of lowering the VOC content by using styrene urethane alkyd resin, and improving the ease of operation and the properties of the oily stain during coating by faster drying than the enteric alkyd resin.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention. Herein, the embodiments described herein are preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, and thus, various equivalents and modifications may be substituted for them at the time of the present application.

The manufacturing method of the resin composition for oily stain according to the present invention is a boiled linseed oil, styrene urethane alkyd resin a first step of stirring, and further added as a dispersant, antifoaming agent, dispersed pigment, antibacterial agent, ultraviolet absorber, anti-film agent, drying agent Two steps of stirring and environmentally friendly solvent DMC (Dimethylcarbonate), solvent No. 1, acetone is further added and stirred in three steps.

In the first step of the present invention, it is preferable to mix the boiled linseed oil and the styrene urethane alkyd resin and stir at 100 rpm for 10-20 minutes.

Boiled linseed oil of the present invention penetrates wood and protects wood. Boiled linseed oil is preferably used in an amount of 5-20 parts by weight based on 100 parts by weight of the final blend. At this time, when the boiled linseed oil is used in excess of 20 parts by weight with respect to 100 parts by weight of the final blend may cause a problem that the workability is lowered due to the slow drying of the oil stain.

Styrene urethane alkyd resin of the present invention has the advantage of easy operation by fast drying and improving the physical properties of the oily stain. Styrene urethane alkyd resin is preferably used in 10-30 parts by weight based on 100 parts by weight of the final blend. In this case, when the styrene urethane alkyd resin is used in excess of 30 parts by weight based on 100 parts by weight of the final blend, the price of the oily stain may be high, resulting in a problem of low economic efficiency.

On the other hand, in the second step, it is preferable to mix the compound, dispersant, antifoaming agent, dispersed pigment, antibacterial agent, ultraviolet absorber, anti-film agent and drying agent of step 1 and stir at 600 rpm for 15-30 minutes.

The dispersant of the present invention is used for the stability of the dispersed pigments, dispersants can be used without limitation silicone type and non-silicone type dispersant, and the wet dispersant of BYK-Chemie GmbH of the alkylol ammonium salt type was used. The dispersant is preferably used at 0.1-1.5 parts by weight based on 100 parts by weight of the final blend.

The antifoaming agent of the present invention was a silicone type antifoaming agent, and an antifoaming agent of BYK-Chemie GmbH (trade name: BYK180) was used. Non-silicone defoamers can also be used without limitation. At this time, the antifoaming agent is preferably used in 0.2-2 parts by weight based on 100 parts by weight of the final blend.

As the pigment of the present invention, a pigment obtained by dispersing an iron oxide pigment was used and a red color was used. For the color of the oily stain, it is preferable to use the dispersed white oxide color pigments and red green black yellow dispersed iron oxide pigments. At this time, the pigment is preferably used in 4-15 parts by weight based on 100 parts by weight of the final blend.

The antimicrobial agent of the present invention is used to give a wood antibacterial effect. As a fungicide, 3-iodo-propynyl-butylcarbamate, 2-n-octyl-4-isothiazolin-3-one, propiconazol, or the like can be used. At this time, the antimicrobial agent is preferably used in 0.1-1 parts by weight based on the final blend.

The ultraviolet absorbent of the present invention is used to protect a coating of oily stain coated from ultraviolet rays. Ultraviolet absorbers can be used 2-Hydroxyl-4-methoxybenzophenone, 2- (2H-benzotriazole-2-yl) -4-tert-butylphenol, 5-Benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid, and the like. At this time, the ultraviolet absorber is preferably used in 0.1-2 parts by weight based on 100 parts by weight of the final blend.

The antifilm agent of the present invention prevents film formation upon storage of oily stain. The film preventive agent uses methyl ethyl ketoxim, and it is preferable to use 0.1-0.4 weight part with respect to a final formulation.

The desiccant of the present invention cures the alkyd resin of oily stain during coating. The desiccant uses a calcium desiccant and is preferably used in an amount of 0.2-5 parts by weight based on the final blend.

On the other hand, in the third step, it is preferable to mix the compound of the second step, environmentally friendly solvent DMC (Dimethylcarbonate), solvent No. 1, acetone and stirred for 10-15 minutes at 300rpm.

Eco-friendly solvent of the present invention is DMC (Dimethylcarbonate) VOC is 0g / l and is an environmentally friendly solvent. At this time, DMC is preferably used in 10-30 parts by weight based on the final blend.

Solvent No. 1 of the present invention is used as a low boiling point quick-drying solvent for drying oily stain and used hydrocarbon solvent No. 1 of KNOC. At this time, the solvent 1 is preferably used in 20-40 parts by weight based on the final blend.

Acetone of the present invention was used for resin dissolution and drying of oily stain. At this time, acetone is preferably used in 10-35 parts by weight based on the final blend.

On the other hand, the oily stain composition using the styrene urethane alkyd resin of the present invention and a method for producing the same may further be mixed with the enteric alkyd resin in the first step of stirring the boiled linseed oil, styrene urethane alkyd resin. The oleaginous alkyd resin is preferably used in an amount of 10-30 parts by weight based on the final blend. At this time, when the oleaginous alkyd resin is used in excess of 30 parts by weight relative to the final formulation, the drying may be delayed, which may cause a problem that workability may be reduced.

<Example>

Boiled linseed oil, styrene urethane alkyd resin was mixed using each component as shown in Table 1 below, and stirred at 100 rpm for 15 minutes. Thereafter, a dispersant, an antifoaming agent, a dispersed pigment, a fungicide, an ultraviolet absorber, an anti-film agent, and a drying agent were added and stirred at 600 rpm for 20 minutes. Further, DMC, solvent No. 1, and acetone were mixed and stirred at 300 rpm for 315 minutes to prepare a resin composition for oily stain.

ingredient Comparative Example 1 Example 1 Example 2 Boiled linseed oil 6 6 6 Enteric alkyd resin 30 0 15 Styrene urethane alkyd resin 0 30 15 Dispersant 0.2 0.2 0.2 Antifoam 0.6 0.6 0.6 Dispersed pigment 4 4 4 Antiseptic 0.2 0.2 0.2 UV absorbers 0.2 0.2 0.2 Anti-film 0.2 0.2 0.2 drier 0.6 0.6 0.6 DMC 15 15 15 Solvent No. 1 31 31 31 Acetone 12 12 12 Sum 100 100 100

Experimental Example

The oily stains prepared in Example 1 and Comparative Example 1 were tested according to the following physical property measurement method and the results are shown in Table 2 below.

Comparative Example 1 Example 1 Example 2 Remarks importance 0.84 0.84 0.84 Nonvolatile matter (%) 31.28 27.48 29.87 2 hours at 105 ℃ Viscosity (seconds) 10.6 11.2 11.0 Ford Cup # 4 Exterior Good Good Good Good Paint mixed state Good Good Good Uniform Brush workability Good Good Good Good Drying time (minutes) 100 85 90 Within 120 minutes Water resistance (minutes) 120 150 140

As shown in Table 2, the oily stain prepared using the styrene urethane alkyd resin of Example 1 had a lower volatile content from 31.28% to 27.48% than the oily stain prepared using only the enteric alkyd resin, and the viscosity was 10.6. It can be seen that the increase to 11.2. In addition, the drying time was also shortened from 85 to 100 minutes, it was confirmed that the water resistance improved from 120 minutes to 150 minutes.

In addition, the oil-based stain prepared by using the styrene urethane alkyd resin and enteric alkyd resin of Example 2 also has a non-volatile content from 31.28% to 29.87% lower than the oil-based stain prepared using only enteric alkyd resin, viscosity It can be seen that is increased from 10.6 to 11.2. In addition, the drying time was also shortened from 90 to 100 minutes, it was confirmed that the water resistance improved to 140 in 120 minutes.

* Measurement of Physical Properties *

Specific gravity: measured with KSM5000-2131

Non-volatile matter: measured by KSM5000-2113

Viscosity: measured by KSM5000-2123

Appearance: Visually check the surface condition, swelling and discoloration of the dried coating

Paint mixing condition: measured by KSM5000-2011

Brush workability: After brushing vertically with a brush and painting horizontally again, check whether the existing painting surface is not melted.

Drying time: measured by KSM5000-2511

Water resistance: Measure the time that water soaks by applying 1 drop of water with a dropper on the test piece after painting it twice with brush on solid wood.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

Claims (6)

A resin composition for oily stain, comprising 5-20 parts by weight of boiled linseed oil and 10-30 parts by weight of styrene urethane alkyd resin as essential components based on 100 parts by weight of the final blend.
The method according to claim 1, 0.1-1.5 parts by weight of dispersant, 0.2-2 parts by weight of antifoaming agent, 4-15 parts by weight of dispersed pigment, 0.1-1 part by weight of antibacterial agent, 0.1-2 parts by weight of ultraviolet absorber, based on 100 parts by weight of the final blend , 0.1-0.4 parts by weight of coating agent, 0.2-5 parts by weight of desiccant, 10-30 parts by weight of dimethylcarbonate (DMC) and 20-40 parts by weight of low boiling point quick-drying solvent No. 10, 35 parts by weight of acetone, oily alkyd resin 10 A resin composition for oily stain, further comprising -30 parts by weight.
delete A first step of stirring with 5-20 parts by weight of boiled linseed oil, 10-30 parts by weight of styrene urethane alkyd resin and 10-30 parts by weight of enteric alkyd resin, based on 100 parts by weight of the final blend,
0.1-1.5 parts by weight of dispersant, 0.2-2 parts by weight of antifoam, 4-15 parts by weight of dispersed pigment, 0.1-1 part by weight of disinfectant, 0.1-2 parts by weight of ultraviolet absorber, 0.1-0.4 weight of anti-film agent And a second step of adding and stirring 0.2-5 parts by weight of a desiccant,
In the second step, 10-30 parts by weight of environmentally friendly solvent DMC (Dimethylcarbonate), 20-40 parts by weight of low boiling point fast-drying solvent, and 10-35 parts by weight of acetone are added and stirred. Process for preparing cited resin composition.
The method of claim 4, wherein the first step is stirred at 100 rpm for 10-20 minutes,
The second stage is stirred for 15-30 minutes at 600 rpm,
The third step is a method of producing a resin composition for oily stain, characterized in that the stirring for 10-15 minutes at 300rpm.
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