JP2000085060A - Molded fiber-reinforced plastics, bathtubs, washrooms and kitchen countertops made of fiber-reinforced plastics - Google Patents

Abstract

(57) [Problem] To provide a clean and sanitary fiber-reinforced plastic molded article having insect repellent, antibacterial, and antifungal properties that repels unpleasant pests such as cockroaches. SOLUTION: A clean and sanitary fiber reinforced material having repellency against discomfort pests is constituted by forming a molded body from a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent. It can be a plastic molding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can be used as a raw material for water around bathtubs, washing places, kitchen counters, etc., and is a fiber having insect repellent, antibacterial and antifungal properties that repels unpleasant pests such as cockroaches. The present invention relates to a molded article made of reinforced plastic, a bathtub, a washing place, and a kitchen counter of fiber reinforced plastic.

[0002]

2. Description of the Related Art Conventionally, fiber-reinforced plastics using unsaturated polyester resin and glass fiber have been widely used in areas requiring waterproofness, such as bathtubs and washing places, particularly where light weight and high strength are required. Have been. The laminated structure of these fiber reinforced plastics is generally composed of a monochromatic gel coat layer and a fiber reinforced plastic layer from the surface. The gel coat layer is a coating film used for improving hot water resistance and chemical resistance, and is formed by applying a spray-up method. The gel coat resin is used by coloring an unsaturated polyester resin with a single color pigment and adding a fine silicon oxide powder to form a state called thixotropic suitable for coating. As a general molding method, a mold is coated with a gel coat and cured, followed by laminating a fiber reinforced plastic composed of glass fibers and an unsaturated polyester resin, curing and then releasing the mold.

[0003] On the other hand, thermoplastic pellets formed by adding an unpleasant pest repellent or an antibacterial agent to a plastic have been put to practical use. However, an unpleasant pest repellent or an antibacterial agent is used in unsaturated polyester resin-based gel coat resin and the like. No specific example of adding is known.

Accordingly, products such as kitchens, bathrooms such as bathtubs made of fiber-reinforced plastic which are used around water, washing stations, kitchen counters, etc. may be damaged by cockroaches or other unpleasant pests depending on their use. In fact, there is no active prevention of fungal, fungal and bacterial growth. For this reason, it is also a cause of impairing the cleanliness of a plumbing area such as a kitchen and a bathroom that should be originally clean.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a product made of fiber-reinforced plastic typified by a washing place used in a plumbing place such as a kitchen, a lavatory or a bathroom, and to attract abundant food and water. The objective is to avoid the attraction of cockroaches and other unpleasant pests by substances, and to control the growth of bacteria and mold on the bait with attached dirt so that it can be used cleanly and hygienically. is there.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a molded article made of a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, wherein the surface layer is made of an unsaturated polyester containing an unpleasant pest repellent. It is composed of a resin-based gel coat resin.

According to the present invention, a clean and comfortable molded article of a fiber-reinforced plastic having repellent properties against cockroaches or the like is obtained by incorporating an unpleasant pest repellent into a molded article of a fiber-reinforced plastic. Can be.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be easily implemented by those skilled in the art by adopting the forms described in the claims.

That is, in a molded article made of a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, the surface layer is made of an unsaturated polyester resin-based gel coat resin containing an unpleasant insect repellent. Thereby, it is possible to obtain a clean and sanitary fiber-reinforced plastic molded article having repellency against cockroaches and other unpleasant pests.

The surface layer is made of a fiber reinforced plastic bath made of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent, thereby providing a clean and repellent pest such as cockroaches. It can be a sanitary bathtub.

[0011] Further, the surface layer is made of a fiber reinforced plastic made of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent, thereby providing a washing place.
A clean and hygienic washing place having repellency against cockroaches and other unpleasant pests can be provided.

Further, the surface layer is made of a fiber-reinforced plastic kitchen counter made of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent, thereby providing a cleanliness having repellency against cockroaches and other pests. It can be a sanitary kitchen counter.

A molded article made of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent and an antibacterial agent, and at least an inorganic antibacterial agent as the antibacterial agent One, and a molded article made of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing an antibacterial agent and an unpleasant pest repellent agent comprising at least one of an organic antibacterial agent, such as cockroaches A more clean and sanitary molded article having insect repellency that repels unpleasant pests and further suppressing the growth of bacteria and fungi can be obtained.

[0014] By forming a molded article made of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing a cockroach repellent as a repellent for repelling pests, cockroaches, which are typical repellent pests, can be further reduced. It is possible to form a molded product that cannot be effectively brought to rest.

Further, by forming a molded article made of a fiber reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing a transdermally effective repellent for repellent pests, the repellent for repellent pests of transdermal effect is obtained. The drug can be formed into a molded product having a low volatility at room temperature and a long-lasting effect of repelling pests.

Further, the surface layer has two to five types of gel coat resins, and at least one type of the gel coat resins includes a molded article made of a fiber reinforced plastic composed of a gel coat resin containing an unpleasant insect repellent. By doing so, a clean and sanitary molded article having a repellent property against cockroaches and other unpleasant pests, and further having a pattern on the surface and excellent in design can be obtained.

Further, the surface layer has two to five types of gel coat resins, and at least one type of the gel coat resin is made of a fiber reinforced plastic composed of a gel coat resin containing an unpleasant insect repellent and an antibacterial agent. By having a molded body, it has an insect repellent property that keeps unpleasant pests such as cockroaches away, and is more clean and sanitary in which the growth of bacteria and mold is suppressed, and furthermore, a pattern is added to the surface and the design is also improved An excellent molded article can be obtained.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described below.

In the present invention, the repellent agent for repelling pests includes pyrethroid-based substances such as ethophene block (1- (p-ethoxyphenyl) -2-methylpropyl-).
3-phenoxybenzyl ether), cyphenothrin ((RS) -alpha-cyano-3-phenoxybenzyl (1R) -cis / trans-chrysanthemate), permethrin (3-phenoxybenzyl-di-cis / trans-3 ( 2,2-dichlorovinyl) -2,2-dimethyl-1-cyclopropanecarboxylate), arethrin (3-allyl-2-methylcyclopent-2-ene-)
4-one-1-ylchrysanthemate) and the like, but is not limited thereto.

As the organic phosphorus-based substance, diazinon,
Examples include, but are not limited to, triclophone, fenitrothion, phenithion, timephos, bromophos, and the like.

The antibacterial agent in the present invention includes silver nitrate, silver sulfate and silver chloride as inorganic antibacterial agents. Zeolite supporting silver, copper, zinc or tin. And silica gel supporting silver, copper, zinc or tin, but not limited thereto.

Examples of the organic antibacterial agent include phenyl ether derivatives such as 10,10'-oxybisphenoxaarsine, N-haloalkylthio compounds such as cyclofluanide, and 2- (4-thiazolyl) benzimidazole (hereinafter abbreviated as TBZ). Imidazole derivatives, 2,3,
Examples include, but are not limited to, quaternary ammonium salts such as 5,6 tetrachloro-4- (methylsulfoline) pyridine.

Example 1 To 100 parts by weight of a gel coat resin composed of an isophthalic unsaturated polyester resin, 1 part by weight of cyphenothrin (a repellent for unpleasant pests) was added and uniformly dispersed by stirring. A predetermined curing agent and an effect promoting agent were added thereto, and a coating film of about 0.5 mm was formed by a spray gun and cured to form a gel coat layer. Subsequently, a fiber-reinforced plastic layer composed of glass fibers and an unsaturated polyester resin was formed by a known method. This was removed from the mold to obtain the desired molded product.

Example 2 0.5 parts by weight of cyphenothrin was added to 100 parts by weight of a gel coat resin composed of an isophthalic unsaturated polyester resin, and the mixture was uniformly dispersed by stirring. A predetermined curing agent and an effect accelerator are added to this, and about 0.5 mm
Was formed and cured to form a gel coat layer. Subsequently, a fiber-reinforced plastic layer composed of glass fibers and an unsaturated polyester resin was formed by a known method. The intended washing place was obtained by removing the mold.

Example 3 1 part by weight of 1-ethynyl-2-methyl-2-pentenylchrysanthemate was added to 100 parts by weight of a gel coat resin made of an isophthalic unsaturated polyester resin, and the mixture was stirred to obtain a uniform mixture. Was dispersed. A predetermined curing agent and an effect promoting agent were added thereto, and a coating film of about 0.5 mm was formed by a spray gun and cured to form a gel coat layer. Subsequently, a fiber-reinforced plastic layer composed of glass fibers and an unsaturated polyester resin was formed by a known method. This was removed from the mold to obtain the desired molded product.

Example 4 1 part by weight of cyphenosulin, 1 part by weight of silver zeolite and 1 part by weight of TBZ were added to 100 parts by weight of a gel coat resin composed of an isophthalic unsaturated polyester resin, and the mixture was stirred uniformly. Dispersed. A predetermined curing agent and an effect accelerator are added to this, a coating film of about 0.5 mm is formed by a spray gun,
The mixture was cured to form a gel coat layer. Subsequently, a fiber-reinforced plastic layer composed of glass fibers and an unsaturated polyester resin was formed by a known method. This was removed from the mold to obtain the desired molded product.

FIG. 1 is a schematic view showing a surface portion of a molded body according to one embodiment of the present invention. Numeral 1 is a drug for repelling pests, such as cyphenothrin. Reference numeral 2 denotes an inorganic antibacterial agent represented by silver zeolite. 3 is an organic antibacterial agent represented by TBZ. The unpleasant pest repellent 1, the inorganic antibacterial agent 2, and the organic antibacterial agent 3 are each a gel coat resin layer 4.
Is dispersed inside. 5 is a fiber reinforced plastic layer made of glass fiber and unsaturated polyester resin.

(Example 5) By the pressure of three gel coat tanks, three gel coat resins are discharged from a gun after passing through a certain mixing pipe, mixed with a curing agent and atomized at an arbitrary atomizing pressure. Using a multicolor gun apparatus, the coating was performed under the conditions of an atomizing pressure of 2.0 kg / cm2. The three types of gel coat resins in the three gel coat tanks of the multicolor gun device and the discharge weight ratio are shown below.

[0029]

[Table 1]

To 100 parts by weight of the above-mentioned black gel coat resin, 1 part by weight of cyphenothrin was added in advance, and the mixture was stirred and used to uniformly disperse the black gel coat resin. The gel coat resin applied in this way is
The composition was cured at 30 ° C. for 30 minutes. The thickness of the gel coat after curing was 0.4 mm. Subsequently, a fiber-reinforced plastic layer composed of glass fibers and an unsaturated polyester resin was formed by a known method. By removing this,
The desired patterned molded body was obtained.

As shown in FIG. 2, the molded body obtained by such a method is composed of a gel coat resin portion 6 containing an unpleasant pest repellent such as cyphenothrin, and a gel coat resin not containing them. The configuration is such that portions 7 are scattered. By scattered in this manner, the surface design becomes a spot pattern.

Comparative Example A gel coat resin composed of the same isophthalic unsaturated polyester resin as in Example 1 was used.
A predetermined curing agent and an effect promoter were added, and a coating film of about 0.5 mm was formed by a spray gun, and cured to form a gel coat layer. Subsequently, a fiber-reinforced plastic layer composed of glass fibers and an unsaturated polyester resin was formed by a known method. This was removed from the mold to obtain the desired molded product.

The repellency against cockroaches of each molded product and washing place obtained in each of the examples and comparative examples was evaluated. 200mm x 200m from the molding and washing place
m, cut out a plate sample, place food and water on the sample,
Each of the 30 German cockroaches was allowed to stand in a room with 30 adults, and 48 hours later, the survival rate of the food relative to its original weight was examined. Table 2 shows the results.

[0034]

[Table 2]

Next, the sustainability of the repellent performance against cockroaches of each of the molded articles and the washing place obtained in each of the examples and comparative examples was evaluated. 200 from the compact and the washing area
After cutting out a flat plate sample of mm × 200 mm and evaluating and confirming the initial cockroach repellent performance, these were left in an atmosphere at 45 ° C. for 2 months. Food and water were placed on the sample, left in a room with 30 adult German cockroaches, and the remaining ratio of the food to the original weight after 48 hours was examined. Table 3 shows the results.

[0036]

[Table 3]

Next, tests were carried out on the antibacterial property and the mold resistance of each of the molded articles and the washing place obtained in each of the examples and comparative examples. A sample of 50 mm × 50 mm was cut out from the molded body and the washing place, and 1 cc of a bacterial solution containing Staphylococcus aureus and Escherichia coli was dropped on each of the samples.
The cells were cultured at 7 ° C for 24 hours. Thereafter, the bacteria were washed out with a sterilized phosphate buffer. The number of viable bacteria in the washed bacterial solution was measured by a pour plate method using a culture medium for measuring the number of bacteria.
Table 4 shows the results.

[0038]

[Table 4]

Each Aspergillus niger bacterial solution was sprayed on each 50 mm × 50 mm sample placed on an agar medium,
C. for 7 days. Table 5 shows the results.

[0040]

[Table 5]

As is clear from Table 2, Examples 1, 3,
The molded articles of Nos. 4 and 5 and the washing place of Example 2 have remarkably good cockroach repellent performance as compared with Comparative Examples. In addition to the case where an unpleasant pest repellent is uniformly dispersed on the surface (Examples 1 to 4), the excellent cockroach repellent performance is obtained even when the unpleasant pest repellent is scattered as in Example 5. It became clear that it could be obtained. Further, if a molded article is prepared using more than five types of gel coat resins and various colors, good repellent performance against discomfort pests cannot be obtained, so that two to five types of gel coat resins are suitable. The reason for this is that when the number of gel coat resins becomes six or more, the probability of contact of the unpleasant pest with the portion of the gel coat resin containing the repellent for repellent pests is reduced, and the repellent performance of repellent pests is reduced.

With respect to the upper limit of the amount of the repellent to be disturbed, if it exceeds 5 parts by weight with respect to 100 parts by weight of the gel coat resin, the basic physical properties such as hot water resistance and chemical resistance of the gel coat resin are undesirably impaired. Further, the lower limit of the amount of addition is 0.1 to 100 parts by weight of the gel coat resin.
At less than 1 part by weight, good repellent performance against discomfort pests could not be obtained.

As is clear from Table 3, Examples 1, 4 and
The molded body of No. 5 and the washing place of Example 2 have extremely good cockroach repellency sustainability as compared with the comparative example. This is because the discomfort pest repellent added in Examples 1, 2, 4, and 5 is a transdermally effective drug, has a low volatility, and has a long-lasting repellent effect. Further, the unpleasant pest repellent added in Example 3 has a slightly higher volatility, and therefore, the sustainability of the repellent effect of the molded article of Example 3 is inferior to those of the molded articles and washing places of other examples.

As is clear from Table 4, the molded article of Example 4 was able to obtain a remarkable antibacterial effect on Staphylococcus aureus and Escherichia coli as compared with the comparative example.

Regarding the upper limit of the amount of the inorganic antibacterial agent,
If the amount exceeds 5 parts by weight with respect to 100 parts by weight of the gel coat resin, the basic physical properties such as the chemical resistance of the gel coat resin are deteriorated, which is not preferable. Further, when the lower limit of the addition amount is 0.1 parts by weight or less based on 100 parts by weight of the gel coat resin, a good antibacterial effect cannot be obtained.

As is clear from Table 5, the molded article of Example 4 was able to obtain better antifungal performance than the comparative example.

Regarding the upper limit of the amount of the organic antibacterial agent,
If the amount exceeds 5 parts by weight with respect to 100 parts by weight of the gel coat resin, the basic physical properties such as the mechanical strength of the gel coat resin are deteriorated, which is not preferable. When the lower limit of the addition amount was 0.1 parts by weight or less based on 100 parts by weight of the gel coat resin, a good antifungal effect could not be obtained.

[0048]

As described above, according to the molded article of fiber-reinforced plastic and the bathtub, washing place and kitchen counter of fiber-reinforced plastic of the present invention, the following effects can be obtained.

According to the first aspect of the present invention, in a molded article made of a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, the surface layer is made of an unsaturated polyester containing an unpleasant insect repellent. By comprising a resin-based gel coat resin, it is possible to obtain a clean and sanitary fiber-reinforced plastic molded article having repellency against cockroaches and other unpleasant pests.

According to the second aspect of the present invention, the surface layer is made of a fiber-reinforced plastic bath made of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent, so that cockroaches and the like can be eliminated. It is possible to obtain a clean and sanitary bathtub having the repellent property of repelling pests.

According to the third aspect of the present invention, the surface layer is a washing place for fiber-reinforced plastics made of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent, so that cockroaches and the like can be eliminated. It is possible to obtain a clean and sanitary washing place having the repellency of discomfort pests.

According to the fourth aspect of the present invention, the surface layer is made of a fiber-reinforced plastic kitchen counter made of an unsaturated polyester resin-based gel coat resin containing an unpleasant insect repellent, thereby reducing cockroaches. It is possible to obtain a clean and sanitary kitchen counter having the repellent property of the first pest.

According to the fifth aspect of the present invention, a molded article made of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing an unpleasant insect repellent and an antibacterial agent is provided. According to the invention as set forth in claim 6, an unsaturated polyester resin containing at least one of an inorganic antibacterial agent as an antibacterial agent and an antibacterial agent repellent and an antibacterial agent repellent composed of at least one of an organic antibacterial agent The molded body made of fiber reinforced plastic made of gel coat resin has insect repellent properties to keep unpleasant pests such as cockroaches out of place, and furthermore, it is more clean and hygienic, with less growth of bacteria and mold. You can get the body.

According to the seventh aspect of the present invention, a molded article made of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat containing a cockroach repellent as an unpleasant pest repellent is typically used. It is possible to obtain a molded article that does not more effectively attract cockroaches, which are an unpleasant pest.

According to the eighth aspect of the present invention, there is provided a molded article made of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing a transdermally effective agent for repelling pests. Accordingly, a transdermally effective repellent for an unpleasant pest has low volatility, and a molded article having a long-lasting repellent effect can be obtained.

According to the ninth aspect of the present invention, the surface layer has two to five types of gel coat resins, and at least one type of the gel coat resins is composed of a gel coat resin containing an unpleasant insect repellent. Clean and hygienic with repellent properties against cockroaches and other unpleasant pests by making molded bodies made of fiber-reinforced plastic
Further, it is possible to obtain a molded body having a pattern provided on the surface and having excellent design properties.

According to the tenth aspect, the surface layer has two to five types of gel coat resins,
The at least one kind of gel coat resin is a molded article made of a fiber reinforced plastic composed of a gel coat resin containing an unpleasant pest repellent and an antibacterial agent, and has insect repellency that repels unpleasant pests such as cockroaches. Thus, it is possible to obtain a molded article which is more clean and sanitary in which the growth of bacteria and mold is suppressed, and which has a design on the surface and is excellent in design.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a surface portion of a molded body in Example 4 of the present invention.

FIG. 2 is a schematic view showing a surface portion of a molded body according to a fifth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Discomfort pest repellent agent 2 Inorganic antibacterial agent 3 Organic antibacterial agent 4 Gel coat resin 5 Fiber reinforced plastic 6 Part of gel coat resin containing discomfort pest repellent 7 Part of gel coat resin not containing discomfort pest repellent

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B29K 105: 06 (72) Inventor Masaaki Yonemura 1006 Odakadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. F-term (Reference) 2D032 AA00 AB03 GA00 4F100 AK44A BA02 CA02 CA12A DH02B EH46 GB08 JC00 JC00A 4F205 AA41 AB01 AD04 AD16 AG03 AH49 HA14 HB01 HB11 HT04 HT16 HT24

Claims (10)

[Claims] 1. A molded article made of a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, wherein said surface layer is made of an unsaturated polyester resin-based gel coat resin containing an unpleasant insect repellent. Molded fiber reinforced plastic. 2. A bathtub made of a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, wherein said surface layer is made of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent. Bathtub of fiber reinforced plastic. 3. A washing place made of a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, wherein said surface layer is made of an unsaturated polyester resin-based gel coat resin containing an unpleasant insect repellent. Washing area for fiber reinforced plastic. 4. A kitchen counter made of fiber reinforced plastic having a surface layer made of an unsaturated polyester resin gel coat resin, wherein said surface layer is made of an unsaturated polyester resin gel coat resin containing an unpleasant insect repellent. Kitchen counter in fiber reinforced plastic. 5. A molded article made of a fiber-reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, wherein said surface layer is an unsaturated polyester resin-based gel coat containing an unpleasant insect repellent and an antibacterial agent. A molded body of fiber-reinforced plastic made of resin. 6. The fiber-reinforced plastic molded article according to claim 5, comprising at least one of an inorganic antibacterial agent and at least one of an organic antibacterial agent as the antibacterial agent. 7. The fiber-reinforced plastic molded article according to claim 1, wherein the repellent for an unpleasant pest is a cockroach repellent. 8. The method according to claim 1, wherein the drug for repelling pests is transdermal.
7. A molded article of the fiber-reinforced plastic according to any one of items 6 to 6. 9. A molded article made of a fiber reinforced plastic having a surface layer made of an unsaturated polyester resin-based gel coat resin, wherein the surface layer has two to five kinds of gel coat resins, and at least one kind of the gel coat resin is used. The gel coat resin is a molded article of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent. 10. A molded article made of a fiber-reinforced plastic having a surface phase of an unsaturated polyester resin-based gel coat resin, wherein the surface layer has two to five types of gel coat resins, and at least one type of the gel coat resins. The gel coat resin is a molded article of a fiber-reinforced plastic composed of an unsaturated polyester resin-based gel coat resin containing an unpleasant pest repellent and an antibacterial agent.