JPH03244674A - Fireproof paint - Google Patents

Abstract

PURPOSE:To obtain a fireproof paint having excellent flame retardancy and high repellency against a plurality of harmful organisms, such as a rat and an ant, with its persistence, and improved in environmental safety by mixing a resin emulsion, a flame retardant, and an animal-repellent comprising a terpenoid at a specified ratio. CONSTITUTION:A fireproof paint made by mixing 10-40 wt.%, on a solid basis, resin emulsion, 30-70 wt.% flame retardant, and 0.1-20 wt.% animal-repellent comprising a terpenoid. As the resin emulsion and the flame retardant, those known in the art can be used without limitation in particular. As the animal repellent comprising a terpenoid, a mixture of terpenoid monomer with a low polymer of terpenoid, or microcapsules made by enclosing terpenoid monomer or a low polymer of terpenoid in an inorganic porous base material, etc., are used. Examples of inorganic material used as the inorganic porous base material include an alkaline earth metal silicate, a metal oxide, a metal carbonate, and metal.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to the improvement of fire-prevention paints that are applied to the surfaces of buildings and laid cables to prevent the spread of fire in the event of a fire. To prevent the spread of fire in the event of a fire, fire-retardant paint is applied to the surfaces and interiors of buildings, walls and floors, as well as couples installed in tunnels and underground to form a fire-retardant coating. things are being done.

Such fire-retardant paints include ethylene-vinyl acetate copolymer (EVA) and ethylene-ethyl acrylate (E
EA), emulsions of various resins such as polychloroprene, and rubber latex are used as base materials, and viscosity-adjusted products have been used by adding hydrated metal compounds, phosphorus-based and halogen-based flame retardants, and other additives.

However, there is a problem in that the paint films formed with these fireproof paints are damaged by harmful animals such as rats, moles, and termites and peel off. In addition, there was also the problem that mold grew on the surface of the coating film in a humid environment.

Therefore, known pest repellents such as an organic arsenic compound as a fungicide, cycloheximide as a rodent repellent, and an organic pyrifos compound as a termite repellent are added to fire retardant paints for use. However, these pest repellents only have the effect of repelling one specific type of organism, so they cannot be used to deal with damage caused by multiple organisms, such as rats, moles, and termites. There is a drawback. Further, there is a problem that the repellent effects of these pest repellents do not last for a long period of time. Furthermore, there are concerns about the effects on the human body and environmental pollution during the paint application process.

(Problems to be Solved by the Invention) In view of the above points, the present invention has an excellent repellent effect on multiple pests such as rats and termites, has a significantly longer duration of effect, and is harmless to humans and livestock. The purpose is to provide fireproof paints that do not pollute the environment.

(Means for Solving the Problems) The present invention provides a resin emulsion with a solid content of 10 to 40%.
% by weight, 30 to 70% by weight of a flame retardant, and 0.1 to 20% by weight of a terpenoid animal repellent.

As the resin emulsion in the present invention, EVA and E
Known resin emulsions and rubber latexes such as EA and ethylene-methyl acrylate (HMA) + chloroprene copolymer can be used.

In particular, acrylic materials such as EEA and EMA are preferred because they have excellent water resistance. Examples of acrylic emulsions include Polytron Z130 (trade name, manufactured by Asahi Kakai Co., Ltd.). The resin concentration in these resin emulsions is preferably about 40% by weight or more; if the resin concentration is less than this, the paint may drip off before it dries and solidifies. Further, the resin emulsion can be either a water dispersion type or an organic solvent dispersion type, but in a closed space such as a tunnel, a water dispersion type is preferable from the viewpoint of work safety.

Flame retardants used in the present invention are particularly limited, such as halogen-based flame retardants such as decabromodiphenyl ether, hydrated metal compounds such as aluminum hydroxide, red phosphorus, and other flame retardant aids such as zinc oxalate and antimony trioxide. It can be used without.

Furthermore, in the present invention, by using a terpenoid animal repellent, it is possible to exhibit an excellent pest repellent effect against multiple pests such as rats and termites over a long period of time, and also to significantly improve safety. can. Here, the terpenoid animal repellent refers to a mixture of a terpenoid monomer and a terpenoid low polymer, or a microcapsule in which a terpenoid monomer or a terpenoid low polymer is encapsulated in an inorganic porous substrate.

Here, the terpenoid low polymer also includes a low copolymer of a terpenoid monomer and something other than a terpenoid compound.

Terpenoid monomers are a group of compounds contained in plant essential oils or resin gums obtained by steam distillation of plants, and they essentially contain 2 or more carbon atoms (C, \2). > monoterpenoids, sesquiterpenoids with 15 carbon atoms ((?5X3), diterpenoids with 20 g <cs>, 4) carbon atoms,
Any triterpenoid having 30 carbon atoms (C,\6) can be used. These terpenoid monomers are aromatic and essential oil components of plants, substances that do not affect the natural cycle at all, and are therefore harmless to humans and animals.

Specific examples of terpenoid monomers that can be used in the present invention include β-myrcene (Cs. HI6>), alloocimene (
CsoHrb'), citral (C10H160),
Linalool CCroHrb○), Limonene CCroH1
6), dipentene ((, +oHt6), terpinene (C
10816>, terpineol (C+oH1so)
, anethole (CIOHI20), pinene (CIOH1)
6), Nopol (C1[IHI90), Canfuen<
Cl0HI6>, novir acetate (CI38210.
), inbornyl acetate (cr□H2O0,), etc.

Further, in the present invention, low polymers or low copolymers of these terpenoid monomers having a weight average molecular weight of 1000 or less and a degree of polymerization of about dimer to heptamer can also be used. These low polymers or low copolymers have a longer lasting repellent effect than the monomers, so their use in combination with the monomers is more effective than using the monomers alone.

Furthermore, in the present invention, in addition to these terpenoid animal repellents, a retention agent may be used in combination for the purpose of further increasing the sustainability of the repellent effect. Preservatives include polyhydric alcohols (glycerin, propylene alcohol, sorbitol, polyethylene glycol, etc.), sugars (sucrose, lactose, glucose, etc.), diethyl phthalate, amma, benzyl fragrant, and the like.

In the present invention, the above-mentioned terpenoid animal repellent (or mixed with the above-mentioned retention agent if necessary) can be added to the paint as it is, but silica powder, calcium carbonate, zeolite, etc. It can also be added to a paint after being encapsulated in a porous substrate to form microcapsules with a particle size of about 0.1 to 500 μm. Examples of inorganic materials that can be used as the inorganic porous substrate include alkaline earth metal carbonates (calcium carbonate, barium carbonate, magnesium carbonate, etc.), alkaline earth metal silicates (calcium silicate, barium silicate, magnesium silicate, etc.), and metals. Oxides (wrinkle strength, cobalt oxide, nickel oxide), metal carbonates (cobalt carbonate, nickel carbonate, basic copper carbonate, etc.),
Examples include metals (cobalt, metal, copper, etc.). Microcapsules are formed, for example, by an interfacial reaction method and have a hollow spherical shape with micropores of 20 to 1000 angstroms. l! It can be produced by mixing the porous wall material and the terpenoid monomer and/or its low polymer and then reducing the pressure, or by mixing while reducing the pressure and then returning the pressure to normal pressure. It can also be produced by encapsulating the above-mentioned terpenoid in a porous solid spherical inorganic porous substrate. Alternatively, these inorganic porous substrates and terpenoid components are mixed and left to stand.
It can also be produced by impregnating a substrate with the components. Note that the terpenoid component may be used after being diluted with a low boiling point solvent such as ethyl acid or acetone. In this case, the solvent is removed by applying heat after encapsulating the terpenoid component.

If microencapsulation is performed in this manner, the elution time of the repellent into the outside air will be significantly extended, and the repellent effect will be maintained over a long period of time. Furthermore, when only the terpenoid component is used, the duration of its effect is greatly improved by microencapsulation.

The fire retardant paint of the present invention contains these components in a resin emulsion of 10 to 40% by weight solids and a flame retardant of 30 to 70% by weight.
It is obtained by adding and mixing the terpenoid animal repellent at a ratio of 0.1 to 20% by weight. If the blending amount of each component is out of this range, the mechanical strength, flame retardance, and pest repellent effect of the resulting coating film will deteriorate, which is undesirable.

In addition to the above-mentioned components, the present invention also includes kynor fiber, ceramic m-fiber, organic carbon m-fiber (for example,
Adding a small amount of fiber such as Pyromex (trade name, manufactured by Toho Rayon Co., Ltd.) can significantly improve paint dripping.

Furthermore, water or starch may be added as a viscosity modifier for the paint, and ethylene glycol or the like may be added as appropriate to improve the low-temperature properties of the paint film.

The thus obtained fireproofing paint of the present invention is applied to architectural elliptical relics, installed gables, etc. to a thickness of about 1 cm at room temperature.
It can solidify by air drying and form a fireproof coating.

(Function) The fireproofing paint of the present invention uses terpenoid monomers extracted from plants or their low polymers as pest repellents, so it is effective against insects and insects that have an excellent repellent effect on rats, ants, and mold. It is extremely safe, harmless to humans and animals, and there is no risk of contaminating the surrounding environment.

Furthermore, low polymers of terpenoid monomers have a long-lasting effect, and if used, the repellent effect will be exhibited for a longer period of time.

Furthermore, if terpenoid monomers or their low polymers are encapsulated in an inorganic porous material to form microcapsules, the effects will be even longer lasting, and in this case, even if only terpenoid monomers are used, the effects will be sufficiently long-lasting. Ru.

(Example) Examples of the present invention will be described.

First, the following four types of microcapsules were created.

[MC-Al] Alloocimene:α-terpineol:sesquiterpene were encapsulated as terpenoid monomers in a ratio of 4:1:5 in a solid spherical porous substrate made of silica. In addition, the terpenoid component is 75% by weight of the entire microcapsule? 5
Met.

2 MCA 2g.

A solid spherical porous substrate made of silica is coated with a mixture of terpenoid monomer and terpenoid low polymer in a ratio of 7:3.
weight? 5 were enclosed. Hey, terpenoid monomers include alloocimene, α-terpineol, and sesquiterpene'.
The terpenoid low polymers used were alloocimene dimer and alloocimene trimer at a ratio of 1:1.

[MC-B1] A terpenoid component similar to MC-Al was encapsulated in an amount of 75% by weight inside a hollow spherical porous wall material made of silica and having micropores of 20 to 1000 angstroms.

[MC-82F MC-A 2 is placed inside a porous wall material made of silica that has a hollow spherical shape and has micropores of 20 to 1000 angstroms.
75% by weight of the same terpenoid component was encapsulated.

These microcapsules were added to a paint in the formulation shown in the table and mixed to obtain an aquatic organism repellent paint.

Examples 1 to 12 Each component was mixed in an ION kneader according to the formulation shown in the table.
A fireproof paint was produced by stirring for 0 minutes. Incidentally, as the terpenoid low polymer, alloocimene dimer and trimer were used.

Next, the obtained paint was applied to one side of a polyester film of 30an x 30cm x 0.05m thick, and heated at 60℃ for 30 minutes.
A test piece was obtained by drying and solidifying for a day to form a coating film with a thickness of about 1 inch. This was used to measure the oxygen index and perform the following tests.

Smoke emission amount: Compliant with ASTM E662.

Water resistance: The state of the test specimen was examined after it was immersed in water at 70'C for 5 days.

Mold resistance test: A Petri dish was spread with an agar medium, a test specimen was placed on top of the agar medium, and the mixed bacteria was evenly sprinkled on it, the growth status was observed for 4 weeks, and the number of days until mold began to grow was measured. As for the mixed bacteria, five types of mixed bacteria were used: Alpergillus niger, Penicillium citrinum, Rhizobus stolonifer, Cladosporium cladosporioides, and Chaetomium globosum.

Mouse-proof test: A brown rat, food, and a test specimen were placed in a cage and observed for one week, and the number of days until mouse marks appeared on the test specimen was measured.

Prevention #i test: 100 termites, food (Japanese black pine), and test specimens were placed in a container and observed for 4 weeks, followed by the following 5-grade evaluation from A to E.

A. There was no feeding damage to the test specimen, only on the top edge.

B: Slight traces of feeding damage are seen on the edges of the test specimen.

C. - Feeding damage progresses starting from the edge portion of the test piece.

D: Traces of feeding damage are also seen near the center of the test specimen.

E: Traces of feeding damage can be seen over almost the entire area of the test specimen.

These results are shown in the table.

Comparative Examples 1 to 7 For comparison, examples in which only terpenoid monomers were blended (
Comparative example 1), example of too little blending amount of flame retardant (comparative example 2.3)
), an example in which no terpenoid animal repellent was added (Comparative Example 4), and an example in which a known termiticide, rodent repellent, and mold repellent were added instead of the terpenoid animal repellent (Comparative Example 5.6.7)
) was tested in the same manner as in Example 1. The results are shown in the table.

(Left below) (Effects of the invention) As described above, the fire prevention paint of the present invention has excellent flame retardancy, is harmless to humans and highly safe, and is highly resistant to multiple harmful organisms such as rats and ants. The repellent effect can be exerted over a long period of time, and the sustainability of the effect can be greatly improved.

Claims (1)

[Claims] (1) A fire retardant paint characterized by being made by mixing 10 to 40% by weight of a resin emulsion in terms of solid content, 30 to 70% by weight of a flame retardant, and 0.1 to 20% by weight of a terpenoid animal repellent. .