KR20180061507A - Fireproof and Antimicrobial Paint Composition - Google Patents

Abstract

The present invention relates to a flame retardant coating composition comprising bis (2-pyridylthio) zinc 1,1'-dioxide, which is excellent in flame retardancy, Bar, one paint can show flame retardant effect and antibacterial effect. Therefore, it is possible to save time and cost by separately applying the conventional flame-retardant paint and the antibacterial paint, and it is expected that the economical efficiency and the workability can be effectively improved.

Description

[0001] Fireproof and Antimicrobial Paint Composition [0002]

More particularly, the present invention relates to a flame retardant coating composition comprising bis (2-pyridylthio) zinc 1,1'-dioxide.

Generally, in the case of modern buildings, it is made up of large size and high-rise buildings. Moving toward emphasis on functionality and design, it is highly vulnerable to fire and can lead to casualties in case of fire. In this situation, countries around the world are taking various measures to prevent the spread of combustion and the generation of toxic gas at the early stage of fire.

Paint used in indoor buildings is rapidly burned when a fire occurs, and poisonous gas is generated to cause personal injury. Various flame retardants and flame retardant paints have been developed and used to overcome these problems.

On the other hand, problems arise due to the growth of fungi and germs in the building structure, which can shorten the life time of the flame retardant paint and lead to damage in case of fire. In addition, in the case of buildings in areas vulnerable to the rainy season and moisture, the upper part of the flame-retardant paint is removed or the structure is easily broken. Therefore, the antibacterial paint is additionally used after the flame-retardant paint is used. However, when a flame-retardant paint and an antimicrobial paint are mixed or used on a coating film, there is a problem that the performance of the coating is deteriorated due to uneven coating between the coating films. In addition, due to the fall off or collapse of the paint, the coating operation is repeated, and the efficiency and efficiency of the workability are lowered. Therefore, it is urgently required to develop a flame retardant paint having both antibacterial activity and flame retardancy in order to increase the flame resistance and antibacterial property of the building structure and solve the existing problems.

Korean Patent Laid-Open No. 10-2009-0003455 Korean Patent Publication No. 10-2012-0095407 Korean Patent Publication No. 10-2004-0046001

An object of the present invention is to provide a flame retardant paint composition comprising bis (2-pyridylthio) zinc 1,1'-dioxide.

In order to accomplish the above object, the present invention provides, as one embodiment, a flame retardant paint comprising bis (2-pyridylthio) zinc 1,1'-dioxide Lt; / RTI >

In the present invention, the bis (2-pyridylthio) zinc 1,1'-dioxide may be represented by the following general formula (1), and Zinc Pyrithione.

[Chemical Formula 1]

In the present invention, the term " flame retarding " means that it is difficult to burn, thereby preventing or delaying the spread of fire burning. In one embodiment of the present invention, the paints of Examples 1 to 4 containing the bis (2-pyridylthio) zinc 1,1'-dioxide were used as flame retardants in a similar or superior level to the commercial paints of Comparative Examples 1 and 2 Lt; / RTI >

In the present invention, the bis (2-pyridylthio) zinc 1,1'-dioxide has antibacterial activity in addition to the flame retarding activity, and more specifically, Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis subtilis, single-celled algae, and the like, and more specifically, it may have antibacterial activity against Bacillus subtilis.

In one embodiment of the present invention, the paints of Examples 1 to 4 containing the bis (2-pyridylthio) zinc 1,1'-dioxide were similar or superior to the commercial paints of Comparative Examples 1 and 2, Lt; / RTI >

Since bis (2-pyridylthio) zinc 1,1'-dioxide, which is an effective ingredient of the coating composition of the present invention, has an antibacterial effect and flame retardant activity, it is possible to simultaneously obtain an antibacterial effect and a flame retardant effect by applying one coating . Therefore, it is possible to save the cost and time by separately applying the existing flame retardant paint and the antibacterial paint, thereby improving the economical efficiency and the working efficiency.

In the present invention, the flame retardant coating composition may further include at least one selected from the group consisting of a resin, a solvent, and a pigment.

The flame retardant coating composition may contain bis (2-pyridylthio) zinc 1,1'-dioxide, a resin, a solvent and a pigment in a weight ratio of 1/10: 10-20: 30-40: 45-55.

The bis (2-pyridylthio) zinc 1,1'-dioxide may be applied in an amount of 1 to 10 parts by weight based on 100 parts by weight of the flame retardant paint composition. When the content is less than 1 part by weight, it is difficult to obtain a flame retardant activity and an antibacterial activity. When the content is more than 10 parts by weight, the compatibility with other composition components and storage stability are deteriorated. From this viewpoint, the bis (2-pyridylthio) zinc 1,1'-dioxide can be applied in an amount of 1 to 10 parts by weight.

The resin may be at least one selected from the group consisting of a vinyl acetate resin, a vinyl chloride resin, a urethane resin, an alkyd resin, an epoxy resin, a phenol resin, an acrylic resin, a fluororesin, a silicone resin and a metal acrylate resin. The resin may be contained in an amount of 10 to 20 parts by weight based on 100 parts by weight of the flame retardant paint composition. If the content is less than 10 parts by weight, the adhesion of the paint may be deteriorated. If the content is more than 20 parts by weight, compatibility with other compositions may deteriorate and the viscosity of the composition may be excessively increased. From this viewpoint, the content of the resin may be 10 to 20 parts by weight based on 100 parts by weight of the flame retardant paint composition.

The pigment may be selected from the group consisting of aluminum oxide, silicon dioxide, zinc oxide, iron oxide, graphite, titanium dioxide, and diatomite. ≪ / RTI > The pigment may be included in an amount of 45 to 55 parts by weight based on 100 parts by weight of the flame retardant paint composition. When the content of the pigment is less than 45 parts by weight, there is a problem of discoloration of the paint. When the content of the pigment exceeds 55 parts by weight, the durability is deteriorated.

The solvent may be selected from the group consisting of xylene, toluene, isobutanol, methylethylketone (MEK), methyl isobutyl ketone (MIBK), and methyl alcohol May be one or more selected from the group. The pigment may be contained in an amount of 30 to 40 parts by weight based on 100 parts by weight of the flame retardant paint composition. If the content is less than 30 parts by weight, the viscosity may become excessively high and the coating operation may become difficult. If the content exceeds 40 parts by weight, the content of bis (2-pyridylthio) zinc 1,1'- There is a fear that adhesion, flame retardancy, and antibacterial properties are lowered.

The present invention relates to a flame retardant coating composition comprising bis (2-pyridylthio) zinc 1,1'-dioxide, which is excellent in flame retardancy, Bar, one paint can show flame retardant effect and antibacterial effect. Accordingly, it is possible to save cost and time by separately applying the conventional flame-retardant paint and the antibacterial paint, and it is possible to expect an efficient effect on economy and workability.

Hereinafter, the present invention will be described in more detail by way of examples. However, the following examples are illustrative of the present invention, and the contents of the present invention are not limited to the following examples.

Experimental Example  One : Bis (2-pyridylthio) zinc  1,1'-dioxide (Zinc Pyrithione ) To manufacture flame retardant paint

Silicon resin, Xylene and Al2O3, SiO2, Titanium dioxide, Graphite, Iron oxide, and Zinc oxide. Bis (2-pyridylthio) zinc 1,1'-dioxide (Zinc pyrithione) was added to the pigment.

In order to prepare the paint, Xylene as a solvent was injected into a paint making container and stirred at 500 rpm for 3 minutes on a high speed stirrer. Silicone resin as a resin was added to the stirred container and stirred at 1,000 rpm for 10 minutes. Then, a pigment and bis (2-pyridylthio) zinc 1,1'-dioxide (Zinc Pyrithione) were added and stirred for 10 minutes. Glass beads were added and stirred at 3,500 rpm for 20 minutes in a high-speed stirrer to prepare a coating composition. Comparative Examples 1 and 2 show commercial paints.

Paint composition material Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Al ₂ O ₃ 3.2 3.2 3.2 3.2 15 10 SiO ₂ 12.2 12.2 12.2 12.2 10 15 Titanium dioxide 36.2 - - - 25 25 Graphite - 33.2 - - - - Iron oxide - - 36.2 - - - Zinc oxide - - - 36.2 - - Silicone resin 15.1 15.1 15.1 15.1 25 30 Xylene 30.3 33.3 30.3 30.3 25 20 (bis (2-pyridylthio) zinc 1,1'-dioxide) 3.0 3.0 3.0 3.0 - - Total 100 100 100 100 100 100

Experimental Example  2 : Bis (2-pyridylthio) zinc  1,1'-dioxide (Zinc Pyrithione ) Was applied to verify the properties of flame retardant paint

(ASTM D 6677-07), surface test (ASTM D 714-87), and solid content of Comparative Examples 1 and 2 of Examples 1 to 4 of the present invention (Comparative Examples 1 and 2) (KS M 5000-2113) and particle size meter (Grind Gauge, UK).

- Adhesion measurement (ASTM D6677-07): grade 10 (less than 0.8mm), grade 8 (1.6mm to 3.2mm), grade 6 (peeling 2.3mm to 6.3mm or more)

- Surface inspection (ASTM D 714-87): F (clean), M (medium), MD (less than medium), D (uneven surface)

- Solid content (KS M 5000-2113):

Test results of physical properties Adhesion (mm) Surface (grade) Solid content (%) Example 1 10 ratings M 65 Example 2 10 ratings M 63 Example 3 10 ratings M 61 Example 4 10 ratings M 64 Comparative Example 1 10 ratings M 63 Comparative Example 2 10 ratings M 59

As shown in Table 2, the coating compositions according to Examples 1 to 4 were excellent in adhesive strength, had a solid content of 61% or more, and had a surface of more than middle level.

Experimental Example  3: Bis (2-pyridylthio) zinc  1,1'-dioxide (Zinc Pyrithione ) Anti-bacterial experiment with anti-bacterial paint

In order to verify the antimicrobial activity of bis (2-pyridylthio) zinc 1,1'-dioxide, the paint used in the existing flame retardant paint industry and the flame retardant paint prepared in Experimental Example 1 were applied to a paper disk, Bacillus subtilis was used for microbial culture at 25 ° C for 48 hours. The results are shown in Table 3.

Bis (2-pyridylthio) zinc 1,1'-dioxide and zinc bis (2-pyridylthio) zinc 1,1'-dioxide were prepared in the same manner as in Examples 1 to 4 and Examples 1 to 4, Pyrithione) were not prepared. Comparative paints of Comparative Examples 1 and 2 were used as a positive control, and paper disks not coated with paint were used as a control. The results of the experiment are shown in Table 3 below.

Results of antibacterial efficacy experiments Experimental group Clean zone (mm) Example 1 21.2 ± 3.5 Example 2 13 ± 0.6 Example 3 19.8 ± 2.9 Example 4 28.6 ± 2.7 Example 5 ㅡ Example 6 ㅡ Example 7 ㅡ Example 8 ㅡ Comparative Example 1 6.4 ± 3.7 Comparative Example 2 5 ± 4.2 Negative control group ㅡ

As a result, the paints of Examples 1 to 4 containing bis (2-pyridylthio) zinc 1,1'-dioxide showed better antibacterial activity than the comparative examples 1 and 2, but bis (2-pyridylthio) The paints of Examples 5 to 8, in which zinc 1,1'-dioxide (Zinc pyrithione) was not added, showed no antimicrobial activity as in the negative control to which no paint was applied. These results indicate that bis (2-pyridylthio) zinc 1,1'-dioxide (Zinc pyrithione) has an excellent antibacterial activity against bacteria.

Experimental Example  4 : Bis (2-pyridylthio) zinc  1,1'-dioxide (Zinc Pyrithione ) Was applied to test the performance of flame-retardant paint

In order to test the flame retardancy of the paints prepared in Examples 1 to 4, flame proofing test was carried out using KS M 2150 (liquefied petroleum gas). The test method of flame resistance test was KSK 2819 method, 45 ℃ metal kettle burner method, KS F 3101 (2nd grade of common plywood), 29cm * 30cm size paint was applied and the test plate was dried at room temperature for 7 days and then flame length was 65mm Flame retardant performance evaluation was carried out.

- Residual flame time: The time from when the flame is removed from the burner to when the flame reaches the burning state (within 10 seconds)

- Sagging time: The time from when the flame is removed from the burner to when the flame is not burned to the end of burning (the reference value is 30 seconds or less)

- Carbonization area: The maximum area (less than 50cm²) where carbonized plywood burned after heating for about 2 minutes.

- Carbonization length: Maximum length (less than 20cm) carbonized plywood burned after heating for about 2 minutes.

Flame Retest Results Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Brine Time [sec] 0 3.6 3.5 1.1 0 0.8 Burst time [sec] 0 0 0 0 0 0 Carbonization area [cm²] 17.6 29 29.8 35.2 38 30 Carbonization length [cm] 6 8.4 7.7 7.8 5.8 5.6

As a result of the test, it was confirmed that the paints of the present invention of Examples 1 to 4 had flame-retarding effects similar or superior to those of the commercial paints of Comparative Examples 1 and 2.

Claims (8)

Bis (2-pyridylthio) zinc 1,1 ' -dioxide. The flame retardant coating composition according to claim 1, wherein the bis (2-pyridylthio) zinc 1,1'-dioxide has an antibacterial activity. The flame retardant coating composition according to claim 1, wherein the bis (2-pyridylthio) zinc 1,1'-dioxide has an antibacterial activity against Bacillus subtilis . The composition for a flame retardant paint according to claim 1, further comprising at least one selected from the group consisting of a resin, a solvent and a pigment. The flame-retardant coating composition according to claim 4, wherein the flame-retardant coating composition contains bis (2-pyridylthio) zinc, 1,1'-dioxide, a resin, a solvent and a pigment in a weight ratio of 1 to 10:10 to 20:30 to 40:45 to 55 By weight based on the total weight of the composition. The resin composition according to claim 4 or 5, wherein the resin is selected from the group consisting of a vinyl acetate resin, a vinyl chloride resin, a urethane resin, an alkyd resin, an epoxy resin, a phenol resin, an acrylic resin, a fluorine resin, ≪ / RTI > The method of claim 4 or 5, wherein the pigment is selected from the group consisting of aluminum oxide, silicon dioxide, zinc oxide, iron oxide, graphite, titanium dioxide ), And Diatomite. The flame retardant coating composition according to claim 1, The method according to claim 4 or 5, wherein the solvent is selected from the group consisting of xylene, toluene, isobutanol, methylethylketone, methyl isobutyl ketone (MIBK) , And methyl alcohol. The flame retardant coating composition according to claim 1,