JP3299081B2 - Antifreeze paint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paint, particularly to a road sign, a sign, a vehicle and the like to form a coating film to prevent the adhesion of snow and ice and to easily form a coating film after a certain period of time. The present invention relates to an anti-freezing paint which can be easily removed.

[0002]

2. Description of the Related Art The inability to see a sign or a mark displayed on a road sign, a signboard, a vehicle, or the like having snow and ice adhered to the surface is a phenomenon usually seen in cold regions. The signs are
Since it is usually formed by an iron plate or a wooden plate, snow or ice that has condensed and adhered to the surface of the sign cannot be easily removed because it firmly adheres to the surface. Even if snow or ice adheres to a sign attached at a height of about 3 meters or more, it is difficult to remove it. In addition, if the sign is not sufficiently visible because it is covered with snow or ice, there is a drawback that a traffic accident may occur or a target place cannot be clearly displayed. For example, as disclosed in JP-A-60-208371, a fluororesin-based coating agent containing a water-repellent component and an oil-repellent component is known. This coating agent contains a water-repellent fluororesin-based component, an oil-repellent fluororesin-based component, an epoxy resin-based component, and a reactive resin medium.

[0003]

However, conventional coating agents containing a fluororesin are excellent in workability and chemical resistance, but are difficult to remove from the surface coated with the fluororesin after use. It is. Therefore, an object of the present invention is to provide an antifreeze paint that prevents freezing of the surface of an object and that can be easily removed from the surface of the object.

[0004]

The antifreeze paint according to the present invention comprises, on a weight basis, 250 to 300 parts of water and 5 to 1 part.
An antifreeze comprising 0 parts of a polyhydric alcohol, 10 to 50 parts of a water-soluble acetate, 2.0 to 5.0 parts of a water-soluble rust inhibitor,
6 to 65 parts of a water-soluble binder. The polyhydric alcohol used as the antifreeze is one selected from the group consisting of ethyl glycol, butyl glycol, ethylene glycol, propylene glycol, butylene glycol, polyethylene glycol, polypropylene glycol, ethyl diglycol, butyl diglycol, glycerin, and propionyl carbinol. Two or more. Rust inhibitors include calcium hydroxide, magnesium hydroxide, calcium hydrogen phosphate, sodium tripolyphosphate, calcium carbonate,
One or more selected from calcium acetate and potassium phosphate nitrite. Water-soluble binders include viscose, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, soluble starch, carboxymethyl starch, dialdehyde starch, polyvinyl alcohol, sodium polyacrylate, polyethylene oxide, water-soluble alkyd resin, and water-soluble One or more resins selected from a melamine resin, a water-soluble urea resin, a water-soluble phenol resin, a water-soluble acrylic resin, a water-soluble epoxy resin, and a water-soluble polybutadiene resin.

The antifreeze paint according to the present invention forms a coating film for preventing freezing or freezing on the surface of an object by being applied and cured on the surface of the object, and easily coats the surface of the object. Can be. The coating film formed on the surface of the object has an action of preventing freezing or freezing of the surface of the object for, for example, three months, and prevents adhesion of snow or ice. After a certain period of time, the coating film can be easily removed or the coating film can be removed by spontaneous falling off.

In an embodiment of the present invention, the antifreeze further contains 60 to 80 parts by weight of one or more alcohols for promoting drying selected from methanol, ethanol, propyl alcohol and isopropyl alcohol. May be included. Acetates exhibiting freezing point depression are sodium acetate, potassium acetate, calcium acetate, silicon acetate, cobalt acetate, calcium / magnesium acetate, tin acetate,
Iron acetate, copper acetate, copper potassium acetate, copper calcium acetate,
One or more selected from nickel acetate, manganese acetate, lithium acetate, and magnesium acetate.

Further, 2.0 to 5.0 parts of a rust preventive, acetate 10
50 to 50 parts of water is mixed with 30 to 50 parts of water, stirred and uniformly dissolved to prepare an additive in advance. If the amount of the rust inhibitor is less than 2.0 parts, no remarkable rust-preventing effect is observed, and even if it exceeds 5.0 parts, the effect is not improved. If the amount of acetate is less than 10 parts, the freezing point drop is not sufficient, and if it exceeds 50 parts, the coating film becomes uneven. Add the additives to the mixture, stir and mix,
Cool naturally at a temperature below ℃ to make antifreeze paint. In order to cure the antifreeze paint applied to the sign board, natural drying or heat drying may be used.

[0008] The antifreeze paint according to the present invention can easily coat the surface of the object by applying it to the surface of the object and curing it. The coating film formed on the surface of the object has an action of preventing freezing or freezing of the surface of the object for, for example, three months, and prevents adhesion of snow or ice. After a certain period of time, the coating film can be easily removed or the coating film can be removed by spontaneous falling off.

[0009]

EXAMPLE 1 2 parts of phosphoric acid and 1 part of potassium nitrite as rust inhibitors and 15 parts of potassium acetate as acetate were mixed with 30 parts of water, stirred and uniformly dissolved to prepare additives in advance. did. Also,
Separately, 60 parts of methanol, which promotes the drying of
0 parts. While stirring, 6 parts of glycerin was added and stirred. Next, 6 parts of a water-soluble melamine resin as a binder was added and dissolved with stirring. Subsequently, 0.5 parts of oxalic acid as a catalyst was added and stirred. Add 45 parts of polyvinyl alcohol as a binder to the mixed solution in which oxalic acid is completely and uniformly dissolved, and stir at 70 ° C.
And uniformly dissolved over 1 hour. An additive prepared in advance is added to the obtained mixture, and the mixture is stirred and mixed.
The composition was naturally cooled below to prepare an antifreeze paint.

[0010] In order to perform a freeze prevention test of the antifreeze paint, as shown in Fig. 1, the right half 2 of the sign board 1 was applied with a brush and dried at 100 ° C for 30 minutes. The left half 3 of the sign board 1 was not coated with the antifreeze paint. Signboard 1 on the side of a mountain path in Tatsuno Town, Nagano Prefecture, January 1
It was left for 30 days from 5th to 14th February. The average temperature of this mountain path was -5C to -15C. The right half 2 of the sign board 1 to which the antifreeze paint was applied was able to prevent snow and ice from adhering, but the left half 3 was adhering to snow 4. The snow 4 attached to the left half 3 increased due to the continuous snowfall, and in fact, the entire left half 3 of the sign board 1 was sometimes covered with the snow 4. After the test was completed, the coating film formed on the right half 2 of the marker plate 1 could be easily removed without leaving the marker plate 1.

Example 2 50 parts of magnesium hydroxide as a rust inhibitor and 50 parts of magnesium acetate as an acetate were mixed with 50 parts of water, and the mixture was stirred and uniformly dissolved to prepare an additive in advance. Next, 80 parts of isopropyl alcohol, which promotes drying of the coating film, was added to 250 parts of water. While stirring, 9 parts of polypropylene glycol as a polyhydric alcohol was added and stirred. Next, 65 parts of hydroxyethylcellulose was added as a binder, and the mixture was completely and uniformly dissolved.
And uniformly dissolved for 30 minutes. Thereafter, the additive prepared in advance was mixed with the obtained mixture by stirring and allowed to cool naturally at a temperature of 30 ° C. or lower to prepare an antifreezing paint.

In order to carry out the same anti-freezing test as in Example 1, the obtained anti-freezing paint was applied to the right half 2 of the sign board 1 shown in FIG. 2 with a brush, and then allowed to air dry. It was not applied to the left half 3 of the sign board 1. The signboard 1 was left for 34 days from February 10 to March 15 on the side of a mountain path in Tatsuno Town, Nagano Prefecture. The average temperature of the mountain path was −5 ° C. to −15 ° C. The antifreeze paint applied to the right half 2 of the sign board 1 also prevented the adhesion of snow and ice, and it was confirmed that no coating film remained on the sign board after the test after March 10th. Ice 5 adhered to almost the entire left half 3 of the sign board 1.

In this example, tests were conducted over the entire component range of each composition of water, polyhydric alcohol, acetate, rust inhibitor, and water-soluble binder. was gotten.

[0014]

As described above, the antifreeze paint according to the present invention can prevent freezing or freezing of the surface of an object for a certain period of time, and after a lapse of a certain period of time, can easily remove the coating or remove the coating. Since the coating film can be removed by natural falling off, there is an effect that a traffic accident can be prevented and the original function of the object can be protected.

[Brief description of the drawings]

FIG. 1 is a front view of a sign board coated with an antifreeze paint according to the present invention.

FIG. 2 is a front view of another sign board coated with an antifreeze paint according to the present invention.

[Explanation of symbols]

1. Signboard, 2. Right half, 3. Left half, 4
・ ・ Snow, 5 ・ ・ Ice,

Continuation of the front page (56) References JP-A-60-206888 (JP, A) JP-A-61-57659 (JP, A) JP-A-6-306650 (JP, A) JP-B-44-30366 (JP, A) U.S. Pat. No. 5,308,389 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C09D 1/00-201/10 C09K 3/00-3/18

Claims (3)

(57) [Claims] 1. An antifreeze comprising, by weight, 250 to 300 parts of water and 5 to 10 parts of a polyhydric alcohol, 10 to 50 parts of a water-soluble acetate, and 2.0 to 2.0 of a water-soluble rust inhibitor. 5.0
And 6 to 65 parts of a water-soluble binder, wherein the polyhydric alcohol is ethyl glycol, butyl glycol, ethylene glycol, propylene glycol, butylene glycol, polyethylene glycol, polypropylene glycol, ethyl diglycol, butyl diglycol, glycerin. , One or more selected from propionylcarbinol, the rust inhibitor is calcium hydroxide, magnesium hydroxide, calcium hydrogen phosphate, sodium tripolyphosphate, calcium carbonate, calcium acetate, potassium nitrite One or more selected binders are selected from the group consisting of viscose, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, soluble starch, and carboxymethyl starch. , Dialdehyde starch, polyvinyl alcohol, sodium polyacrylate, polyethylene oxide, water-soluble alkyd resin, water-soluble melamine resin, water-soluble urea resin, water-soluble phenol resin, water-soluble acrylic resin, water-soluble epoxy resin, water-soluble polybutadiene resin An antifreezing paint characterized by being one or more resins selected from the group consisting of: 2. The freezing method according to claim 1, further comprising 60 to 80 parts by weight of one or more alcohols for promoting drying selected from methanol, ethanol, propyl alcohol, and isopropyl alcohol. Prevention paint. 3. Acetate exhibiting freezing point depression is sodium acetate, potassium acetate, calcium acetate, silicon acetate, cobalt acetate, calcium magnesium acetate, tin acetate, iron acetate, copper acetate, copper potassium acetate, copper calcium acetate, 2. One or more selected from nickel acetate, manganese acetate, lithium acetate, and magnesium acetate.
Antifreeze paint according to the above.