WO2003080754A1

WO2003080754A1 - Multipurpose, multifunctional coating composition

Info

Publication number: WO2003080754A1
Application number: PCT/KR2003/000600
Authority: WO
Inventors: Jae-Hee Shin
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-26
Filing date: 2003-03-26
Publication date: 2003-10-02
Anticipated expiration: 2004-09-26
Also published as: AU2003215960A1

Abstract

The present invention relates to a multipurpose, multifunctional coating composition, and more particularly to a coating composition comprising (a) 70 to 100 parts by weight of an adhesive component selected from the group consisting of dammar resin, pine resin, and rosin; and (b) 5 to 100 parts by weight of a wax component selected from the group consisting of polyethylene wax, paraffin wax, carbona wax, micro wax, and white beeswax, and a preserver for a coating film. The multipurpose, multifunctional coating composition of the invention has excellent waterproofing, water repellency, flame retardancy, antimicrobial, antiseptic, and mothproofing properties, as well as excellent adhesion to architectural materials such as wood, concrete, etc. so that it can also be used as an adhesive. It exhibits beautiful colors, it can be coated is a simple way, its coating thickness can be readily controlled, and it is environmentally friendly.

Description

TITLE OF THE INVENTION

MULTIPURPOSE, MULTIFUNCTIONAL COATING COMPOSITION

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention relates to a multipurpose, multifunctional

coating composition, and more particularly, to a coating composition with

excellent waterproofing, water repellency, flame retardancy, antimicrobial,

antiseptic, and mothproofing properties, as well as excellent adhesion to

architectural materials such as wood, concrete, etc. so that it can also be

used as an adhesive, which exhibits beautiful colors, can be coated in a

simple way, its coating thickness can be readily controlled, and is

environmentally friendly, and a preserver for said coating composition.

(b) Description of the Related Art

Wood is widely used in the manufacture of buildings and furniture, but

it has the drawback of being very vulnerable to deterioration by fire,

microorganisms, or various insects in view of its inherent characteristics. It

also has other problems, for example it is readily rotted because it absorbs a

great deal of moisture during the rainy season. In particular, considering that

the effective life of wooden constructs is usually terminated by such moisture,

fire, or biodeterioration, it is obvious that treatments such as waterproofing, water repellency, flame retardancy, antimicrobial treatment, antiseptic

treatment, and mothproofing onto wood will significantly improve the life and

performance of various structures made of wood.

Korea is a time-honored wooden asset country, and even though a

considerable number of wooden assets have been hitherto destroyed by wars,

etc., many of them still remain, and some have been recognized by UNESCO

as world cultural heritage sites.

These assets include: from the Koryo Dynasty, the Geuklakjeon

structure of the Bongjungsa temple (National Treasure No. 15) and the

Muryansujeon structure of the Pusoksa temple (National Treasure No.18),

which is the oldest existing wooden cultural asset; the Geuklakjeon structure

of the Muwisa temple and the Aksajeon structure of the Kwanryongsa temple

as architecture of the early Chosun Dynasty; and the Palsangjeon structure of

the Pupchusa temple (National Treasure No. 55) as architecture of the mid

Chosun Dynasty, etc.

As can be seen from the existent various Korean wooden assets, it is

appreciated that the life of wooden structures may be 1000 years or longer if

appropriate preservation methods are provided, but so far, very few

preservative techniques for such superior wooden assets have been

developed. Recently, the hall that housed the Sukamoni statue at Ssangbongsa

temple burnt down, and the Geuklakbojeon structure of the Muwisa temple

(National Treasure No. 13) and other structures have been damaged by white

ants and wood erosion. That is, wood is very vulnerable to various natural

phenomena such as moisture, fire, microorganisms, etc.

The primary material for the wooden assets of Korea has been pine

tree wood. This is due to its excellent intensity resistance, flex resistance,

durability, etc.. However, it has strong lignin and thus its surface is tough

and it is apt to crack when dried, and it is also damaged by various insects.

Accordingly, it has always been the practice to coat the wood with "red and

blue".

"Red and blue" refers to a staining agent of inorganic or organic

compounds in which colored particulates are not dissolved in solvents, and it

is mixed with an adhesive and then coated onto buildings, providing a

beautifully colored coating film on the surface of the buildings. However,

such red and blue does not have functions such as waterproofing, water

repellency, flame retardancy, antimicrobial properties, antiseptic properties,

mothproofing, etc.

To improve the flame retardancy of wood, sulfates such as ammonium

sulfate and sodium sulfate, and boron or boric acid, etc. have been used as reagents. However, even though these reagents have excellent flame

retardant effects, they cause chlorosis at the surface of wood when used over

a long period, thereby damaging the appearance of red and blue, and the

flame retardancy also deteriorates.

Also, to improve the antiseptic ability of wood, there have been known

pentachlorophenol and its derivatives, pentachlorophenol-laurate,

pentachlorophenol-dihydroabiethylamine, etc. However, as these

compounds contain phenol, which is noxious to the environment, their use is

now forbidden

Also, as mothproofing agents, there have been known dyldorine,

crolten, smithion, etc. These compounds are also noxious to the

environment and thus their use is forbidden.

Further, the prior flame retardant, antiseptic, and mothproofing

treatments applied to wooden structures are conducted by first impregnating

wood with reagents having flame retardant characteristics and drying them,

and then by impregnating the dried wood with reagents having antiseptic and

mothproofing characteristics. That is, these treatments are applied in several

separate stages and thus their coating methods are somewhat complicated.

SUMMARY OF THE INVENTION

The present invention has been made to solve the aforementioned problems, and it is an object of the invention to provide a coating composition

with excellent waterproofing, water repellency, flame retardancy, antimicrobial,

antiseptic, and mothproofing properties, as well as excellent adhesion to

architectural materials such as wood, concrete, etc. so that it can also be

used as an adhesive, and it exhibits beautiful colors, it can be coated by a

simple way, its coating thickness can be readily controlled, and it is

environmentally friendly.

Further, it is an object of the invention to provide a preserver for the

coating film.

To achieve the aforementioned objects, the present invention provides

a coating composition comprising (a) 70 to 100 parts by weight of an adhesive

component selected from the group consisting of dammar resin, pine resin,

and rosin; and (b) 5 to 100 parts by weight of a wax component selected from

the group consisting of polyethylene wax, paraffin wax, carbona wax, micro

wax, and white beeswax.

Also, the invention provides a preserver for a coating film comprising

(a) 10 to 200 parts by weight of trichloroethyiene, trichloroethane,

methylenechloride, or a mixture thereof; and (b) 0.1 to 20 parts by weight of a

wax. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

This invention will now be further described in more detail.

The coating composition of the invention comprises an adhesive

component and a wax component as essential components.

As the adhesive component, dammar resin, pine resin, rosin, or a

mixture thereof is used, and as the wax component, polyethylene wax,

paraffin wax, fluidic paraffin, carbona wax, micro wax, white beeswax, or a

mixture thereof is used.

The dammar resin contained in the coating composition of the

invention is a kind of natural resin, it is formed by solidification of the sap of a

tree belonging to the Dipterocarpceae family, and it is mostly used for the

preparation of dammar vanish. Dammar resin has excellent adhesion, and

accordingly the coating composition of the invention has excellent adhesion to

architectural materials such as wood, concrete, etc.

The coating composition of the invention preferably comprises the

dammar resin in an amount of 70 to 100 parts by weight. If the content of the

dammar resin is less than 70 parts by weight, the adhesion of the coating

composition of the invention to architectural materials such as wood, concrete,

etc. is reduced and the surface of the architectural materials onto which the

composition is coated becomes tough; and if it exceeds 100 parts by weight, the waterproofing and water repellency of the coating composition of the

invention are reduced.

Also, the coating composition of the invention comprises a wax

component selected from the group consisting of polyethylene wax, paraffin

wax, carbona wax, micro wax, and white beeswax. This wax component has

been widely used as an additive in the preparation of dispersion agents,

processing aids, lubricants, release agents, surfactants, plastics, rubbers,

cables, etc.

Such wax component confers thixotropy to the coating composition of

the invention, and also confers waterproofing and water repellency properties

thereto. Microorganisms that grow in various types of wood terminate their

proliferation at moisture content of 15% or less. That is, as the wax

component has excellent waterproofing and water repellent functions and thus

intercepts the moisture absorption of wood, most microorganisms cannot

survive in wood onto which the coating composition of the invention is coated.

The coating composition of the invention preferably comprises the wax

component in an amount of 5 to 100 parts by weight. If the content of the

wax component is less than 5 parts by weight, the waterproofing and water

repellent functions of the coating composition of the invention are reduced,

and if it exceeds 100 parts by weight, the permeability of the coating composition of the invention becomes excessively low and thus the colors of

the architectural materials such as wood, concrete, etc. do not appear well.

The coating composition may further comprise ethylene vinyl acetate

resin, urethane resin, or a mixture thereof. The ethylene vinyl acetate resin,

urethane resin, or a mixture thereof has a role in improving the temperature

characteristics of the coating composition of the invention.

That is to say, if the ethylene vinyl acetate resin, urethane resin, or a

mixture thereof is added to the coating composition of the invention, the

coating composition is not excessively hardened at low temperatures in winter,

so the coating film onto which the coating composition of the invention is

coated does not crack at a low temperature. In addition, the hardness of the

coating composition of the invention does not become excessively low at high

temperatures in summer, so the coating film onto which the coating

composition of the invention is coated does not have fluidity at a high

temperature.

The coating composition of the invention may preferably comprise the

ethylene vinyl acetate resin, urethane resin, or a mixture thereof in an amount

of 10 to 50 parts by weight. If the content thereof is less than 10 parts by

weight, the hardness of the coating composition becomes low and thus its

weatherability is decreased, and if it exceeds 50 parts by weight, the coating composition is excessively hardened.

The coating composition of the invention may further comprise a fat or

oil component of perilla oil, tung oil, turpentine oil, pine oil, or a mixture thereof.

This fat or oil component has a role in protecting the coating composition of

the invention and protecting the properties of the coating composition

according to a change in temperature.

The fat or oil component may preferably be present in an amount of

0.1 to 20 parts by weight. If the fat or oil component content is less than 0.1

parts by weight, the change of the properties of the coating composition

according to temperature is reduced, and if it exceeds 20 parts by weight, the

coating composition is not well dried when coated.

Furthermore, the coating composition of the invention may further

comprise a flame retardant component of a powder fire extinguisher

composition having ammonium phosphate (monobasic), ammonium sulfate,

or a mixture thereof as a main ingredient.

For the above flame retardant composition, the powder fire

extinguisher composition having ammonium phosphate (monobasic) as a

main ingredient is preferred, as it is a substance having excellent fire

extinguishing properties and it is the most generally used composition for

powder fire extinguishers. It is preferred that the powder fire extinguisher composition having ammonium phosphate (monobasic) as a main ingredient

that can be used in the present invention comprises 70 to 99% by weight of

ammonium phosphate (monobasic), 0.1 to 0.5% by weight of a plasticizer, 0.1

to 5% by weight of silicon oil, 0.1 to 5% by weight of a hardener, and 0.5 to

1.0% by weight of a fluidizer, and that the diameter of the powder particles is

The powder fire extinguisher composition having ammonium

phosphate (monobasic) as a main ingredient is harmless to humans and

animals, and thus it is environmentally friendly.

It is preferred that the coating composition of the invention comprises

the flame retardant component of a powder fire extinguisher composition

having ammonium phosphate (monobasic), ammonium sulfate, or a mixture

thereof as a main ingredient in an amount of 150 to 200 parts by weight. If

the content of the flame retardant component is less than 150 parts by weight,

the flame retardancy of the coating composition of the invention is reduced,

and if it exceeds 200 parts by weight, the viscosity of the coating composition

becomes too high and thus adhesion to the architectural materials such as

wood, concrete, etc. is undesirably reduced.

Further, so as to eliminate chlorosis and impart excellent coating

ability at room temperature, the coating composition of the invention may further comprise trichloroethylene, trichloroethane, methylene chloride, or a

mixture thereof.

Trichloroethylene, trichloroethane, methylene chloride, or a mixture

thereof has excellent volatility and thus lowers the viscosity of the coating

composition of the invention. Therefore, if the coating composition of the

invention comprises trichloroethylene, trichloroethane, methylene chloride, or

a mixture thereof, it can be easily used as a coating agent at room

temperature. The coating composition of the invention to which

trichloroethylene, trichloroethane, methylene chloride or a mixture thereof is

not added has excellent coating ability when used after being heated,

generally to a temperature of 50 to 160 ^°C. However, the coating

composition to which trichloroethylene, trichloroethane, methylene chloride, or

a mixture thereof is added exhibits excellent coating ability even when it is not

heated.

Further, trichloroethylene, trichloroethane, methylene chloride, or a

mixture thereof is reacted with polyethylene wax, etc., thereby forming a

protective film at the surface of the coating film onto which the coating

composition of the invention is coated. The protective film thus formed has a

function of preventing chlorosis of the coating film onto which the coating

composition of the invention is coated. In the case that trichloroethylene, trichloroethane, methylene chloride,

or a mixture thereof is added to the coating composition of the invention, a

preferred content thereof is 10 to 200 parts by weight.

In the case that trichloroethylene, trichloroethane, methylene chloride

or a mixture thereof is added to the coating composition of the invention, if the

content thereof is less than 10 parts by weight, the viscosity of the coating

composition of the invention becomes excessively high and thus it cannot be

used as a coating agent at room temperature and it must be heated for use.

If the content thereof exceeds 200 parts by weight, the viscosity of the coating

composition of the invention becomes excessively low, and as a result, when

the coating composition of the invention is coated onto the surface of wood,

etc., the coating composition flows down and thus cannot form a uniform

coating layer.

Moreover, the coating composition may further comprise pigments in

order to exhibit beautiful colors. The pigments that can be added to the

coating composition of the invention are largely divided into organic pigments

and inorganic pigments.

As organic pigments, cyanine green, permanent orange, permanent

yellow, toluidine red, permanent black, etc. are preferably used; and as

inorganic pigments, titanium dioxide, iron oxide yellow, paris white, emerald green, lead red, cobalt blue, iron oxide red, chrome yellow, chromium oxide

green, ultramarine blue, etc. are preferably used.

All of the above exemplified organic pigments and inorganic pigments

are standard pigments designated by the Office of Cultural Properties, and

they are generally used for "red and blue" coating. Of the above pigments,

an appropriate color can be chosen and added to the coating composition of

the invention in accordance with the application.

It is preferred that the content of the pigments to be contained in the

coating composition of the invention is 0.1 to 60 parts by weight. If the

content of the pigments is less than 0.1 parts by weight, the coating

composition of the invention cannot exhibit appropriate color, and if it exceeds

60 parts by weight, the hardness and viscosity of the coating composition is

raised and thus adhesion to the architectural materials such as wood,

concrete, etc. is undesirably reduced.

As methods for coating the coating composition onto the architectural

materials such as wood, concrete, etc., any coating methods that are

generally used, for example, spray coating, deep coating, etc., are available.

Also, it can be coated directly onto the architectural materials such as wood,

concrete, etc.

Further, the present invention provides a preserver for a coating film comprising (a) 10 to 200 parts by weight of trichloroethylene, trichloroethane,

methylenechloride, or a mixture thereof; and (b) 0.1 to 20 parts by weight of a

wax. It is preferable that the wax is selected from the group consisting of

polyethylene wax, paraffin wax, fluidic paraffin, carbona wax, micro wax, and

white beeswax.

If the preserver for a coating film is applied to the coating film onto

which the coating composition of the invention is coated, a very thin film is

formed at the surface of the coating film, preventing chlorosis from occurring

at the surface of the coating film, and the coating film is stably preserved at

low temperature such as below freezing or at a high temperature such as in a

tropical area. The preserver for coating shows especially good effect when it

is applied to fibers, wood, acrylic sheet, concrete wall, sheet, etc, because the

preserver for coating is very thin.

The preserver of a coating film can be prepared by mixing

trichloroethylene, trichloroethane, methylenechloride, or a mixture thereof,

and the wax component selected from the group consisting of polyethylene

wax, paraffin wax, fluidic paraffin, carbona wax, micro wax, and white

beeswax, and heating them at 50 to 160 ^°C and cooling them, and then it can

be applied to the surface of the coating film.

As described in the above, the coating composition of the present invention has excellent waterproofing, water repellency, flame retardancy,

antimicrobial, antiseptic, and mothproofing properties, as well as excellent

adhesion to architectural materials such as wood, concrete, etc. so that it can

also be used as an adhesive, which exhibits beautiful colors, can be coated in

a simple way, its coating thickness can be readily controlled, and is

environmentally friendly.

Preferred examples of the invention and comparative examples are

given below. The following examples and comparative examples are

provided solely to enable the invention to be understood more fully, and the

subject matter of the invention should not be construed to be limited thereto.

Example 1

80 G of dammar resin, 8 g of polyethylene wax, 8 g of paraffin wax,

and 27 g of ethylene vinyl acetate resin were mixed, and the mixture was

heated at 130 °C for 7 min. 5 g of fluidic paraffin was added to the heated

mixture, which was then uniformly mixed at 130 °C for 3 min. to thereby

prepare a coating composition.

Example 2

The procedures were carried out in the same manner as in Example 1

above, except that 40 g of trichloroethylene was further added. Example 3

80 g of dammar resin, 8 g of polyethylene wax, 5 g of fluidic paraffin, 8

g of paraffin wax, and 27 g of ethylene vinyl acetate resin were mixed and the

mixture was heated at 130 °C for 7 min. 180 g of a powder fire extinguisher

composition having ammonium phosphate (monobasic) as a main ingredient

was added to the heated mixture, which was then uniformly mixed for 3 min.

to thereby prepare a coating composition.

Example 4

The procedures were carried out in the same manner as in Example 3

above, except that 20 g of iron oxide red was further added, and 40 g of

trichloroethylene was further added when the powder fire extinguisher

composition having ammonium phosphate (monobasic) as a main ingredient

was added.

Waterproofing Test

The surface of American pine tree wood of dimensions 13 2 x 1 cm

was coated with the coating compositions prepared in Examples 1 to 4 above

to a thickness of 2 mm, and the wood was then immersed in water to a depth

of 10 cm. At 12 hour intervals, the wood was removed from the water, its

surface was wiped, and its weight was measured to thereby calculate

moisture absorbance rate. As a comparative example, American pine tree wood of the same dimensions that was not coated with the coating

compositions of Examples 1 to 4 was evaluated, using the same method.

The waterproofing properties were evaluated by a waterproofing index

according to the following Formula 1 , using the moisture absorbance rate of

the treated and untreated wood.

Formula 1

{ moisture absorbance rate of untreated wood - moisture absorbance rate of

treated wood } divided by { moisture absorbance rate of the untreated wood }

χ 100

The higher the waterproofing index the higher the waterproofing rate,

and if no moisture is absorbed, the waterproofing index is 100.

The waterproofing index of each coating composition of the examples

was calculated according to the above Formula 1 , and the results are shown

in Table 1 below.

Table 1

As shown in Table 1 above, it was observed that the waterproofing

index of the wood that was treated with the coating compositions of the

invention hardly changed as time passed, whereas the waterproofing index of

the pine tree that was not treated with the coating compositions of the

invention rapidly decreased as time passed. Therefore, it can be seen that

the coating composition of the invention has excellent waterproofing

properties.

Water Repellency Test

The water repellency of the wood samples that were treated with the

coating compositions of Examples 1 to 4 above and the wood sample that

was not treated with the coating composition was determined by a spray

method according to JISL-1005, and the results are shown in Table 3 below.

The water repellency evaluation index ranges from 0 to 100. The higher the

water repellency evaluation index, the better the water repellency.

Conditions regarding the water repellency evaluation index are shown in

Table 2 below. Table 2

Table 3

As shown in Table 3 above, all of the water repellency evaluation

indexes of the examples that were treated with the coating compositions of

the invention were 100, whereas the water repellency evaluation index of the

comparative example that was not treated with the coating composition of the

invention was 0. Therefore, it can be seen that the coating composition of the invention has excellent water repellency.

Flame Retardancy Test

Aflame retardancy test was conducted on three test pieces of pine tree

wood, two of which were treated with the coating composition of the invention

and one of which was not treated with the coating composition, according to

"Flame Retardancy Performance Determination Standard of Integrated Plate,

etc. and Method" of Article 7 of the Standard and Test Particulars of Flame

Retardancy Performance (KOFEIS 1001) published by the Ministry of

Government Administration & Home Affairs/ Korea Fire Equipment Inspection

Corporation, and the average value was determined. The results are shown

in Table 4 below. According to the Enforcement Decree of Fire Fighting

Law, after each test piece is heated by a maker burner for 2 min. and the

spark of the burner is removed, the time until combustion is terminated with

spark being up is defined as a remaining flame time, the time until combustion

is terminated with spark not being up is defined as a remaining body time, the

length that is carbonized is defined as a carbonized distance, and the area

that is carbonized is defined as a carbonized area. According to KOFEIS

1001 , a remaining time within 10 sec, a remaining body time within 30 sec, a

carbonized distance of 20 cm or less, and a carbonized area of 50 cm² or less

are regarded as being appropriate. Table 4

As shown in Table 4 above, all of the wood pieces that were treated

with the coating compositions of Examples 3 and 4 of the invention passed

the flame retardancy test, whereas the wood piece that was not treated with

the coating composition of the invention failed the flame retardancy test.

Therefore, it can be seen that the coating composition of the invention has

excellent flame retardancy.

Antimicrobial property Test

The test was carried out using phycomyces and bluish black fungus

for 4 weeks according to the method arranged by Korea Forest Research

Institute, the Wood Preservation Research Center Standard No. 2 (1997), and

the growth degree of fungi was observed. The evaluated values are shown

in Table 6 below. Table 5 below shows the definition of the evaluated

values. Table 5

Table 6

As shown in Table 6 above, all of the wood pieces that were treated

with the coating composition of the invention passed the antimicrobial

property test, whereas the wood piece that was not treated with the coating

composition of the invention failed the antimicrobial property test. Therefore,

it can be seen that the coating composition of the invention has excellent

antimicrobial properties. Antiseptic property Test

The test was carried out using Tyromyces plaustris, which is brown-rot

fungus, and Coriolus versicolor, which is white-rot fungus, for 3 weeks

according to the test method arranged by KS M-1701 Woods Antiseptic

(1997), and then the average reduction rate in the mass of the test piece was

determined. The results are shown in Table 7 below. According to the

standard, an average mass reduction rate of 3% or less is regarded as having

appropriate antiseptic performance.

Table 7

As shown in Table 7 above, all of the wood samples that were treated

with the coating composition of the invention passed the antiseptic property

test, whereas the wood sample that was not treated with the coating

composition of the invention failed the antiseptic property test. Therefore, it

can be seen that the coating composition of the invention has excellent antiseptic properties.

Mothproofing Test

The test was carried out using Reticulitermes speratus and

Coptotermes formosanus for 3 weeks according to the method arranged by

Korea Forest Research Institute, Wood Preservation Research Center

Standard No. 10 (1997), and then the death rate and the average reduction

rate in the mass of each test piece were determined. The results are shown

in Table 8 below. An average mass reduction rate of 3% or less is regarded

as having appropriate mothproofing effects.

Table 8

As shown in Table 8 above, all of the samples that were treated with

the coating composition of the invention passed the mothproofing test, whereas the sample that was not treated with the coating composition of the

invention failed the mothproofing test. Therefore, it can be seen that the

coating composition of the invention has excellent mothproofing properties.

The coating composition of the invention has excellent waterproofing,

water repellency, flame retardancy, antimicrobial, antiseptic, and mothproofing

properties, as well as excellent adhesion to architectural materials such as

wood, concrete, etc. so that it can also be used as an adhesive, and it exhibits

beautiful colors, it can be coated in a simple way, its coating thickness can be

readily controlled, and it is environmentally friendly.

Claims

WHAT IS CLAIMED IS:

1. A coating composition comprising

(a) 70 to 100 parts by weight of dammar resin, pine resin, or a mixture thereof;

and

(b) 5 to 100 parts by weight of a wax component selected from the group

consisting of polyethylene wax, paraffin wax, carbona wax, micro wax, and

white beeswax.

2. The coating composition of claim 1 , further comprising 10 to 50 parts by

weight of ethylene vinyl acetate resin, urethane resin, or a mixture thereof.

3. The coating composition of claim 1 or claim 2, further comprising 0.1 to 20

parts by weight of a fat or oil component selected from the group consisting of

perilla oil, tung oil, turpentine oil, pine oil, and a mixture thereof.

4. The coating composition of claim 1 or claim 2, further comprising 150 to

200 parts by weight of a flame retardant component of a powder fire

extinguisher composition having ammonium phosphate (monobasic),

ammonium sulfate, or a mixture thereof as a main ingredient.

5. The coating composition of claim 4, wherein said powder fire extinguisher

composition having ammonium phosphate (monobasic) as a main ingredient

comprises 70 to 99% by weight of ammonium phosphate (monobasic), 0.1 to

0.5% by weight of a plasticizer, 0.1 to 5% by weight of silicon oil, 0.1 to 5% by weight of a hardener, and 0.5 to 1.0% by weight of a fluidizer, and the

diameter of the powder particles is 0.1 to 75 μm.

6. The coating composition of claim 1 , claim 2 or claim 4, further comprising

10 to 200 parts by weight of trichloroethylene, trichloroethane,

methylenechloride, or a mixture thereof.

7. The coating composition of claim 1 , claim 2, claim 4 or claim 6 further

comprising 0.1 to 60 parts by weight of a pigment.

8. The coating composition of claim 7, wherein said pigment is selected from

the group consisting of cyanine green, permanent orange, permanent yellow,

toluidine red, permanent black, titanium dioxide, iron oxide yellow, paris white,

emerald green, iron oxide red, chrome yellow, chromium oxide green, and

ultramarine blue.

9. A preserver for a coating film comprising

(a) 10 to 200 parts by weight of trichloroethylene, trichloroethane,

methylenechloride, or a mixture thereof; and

(b) 0.1 to 20 parts by weight of a wax.

10. The preserver of claim 9, wherein the wax is selelected from the group

consisting of polyethylene wax, paraffin wax, fluidic paraffin, carbona wax,

micro wax, and white beeswax.