JP2001233651A - Resin composition for producing artificial marble - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a resin composition for an artificial marble, capable of providing an artificial marble having high stain-resistant performances, reducing cleaning labor for washing stain, maintaining cleanness for a long period of time. SOLUTION: This resin composition is obtained by compounding a thermosetting resin with a curing agent and a substance selected from magnesium silicate, colemanite, zirconia silicate, calcium silicate and magnesium hydroxide as a filler.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition used for producing artificial marble used as furniture members or building materials.

[0002]

2. Description of the Related Art Artificial marble has been conventionally used to mold a resin composition prepared by blending a thermosetting resin with a filler, a reinforcing agent, an internal mold release agent, a curing agent, etc., into a casting mold having a desired shape. It is manufactured by injecting into a mold and curing by heating or the like. As a thermosetting resin of a resin composition as a raw material for producing such artificial marble, polyester-based, acrylic-based, and vinylester-based resins are used.

[0003] The artificial marble thus manufactured is commercialized and widely used as a wash counter, a kitchen counter, a bathtub, a wash bowl and the like.

[0004]

Here, when artificial marble products are used in areas called water areas such as toilets, bathrooms, kitchen areas, etc., contamination by use, contamination by detergents, food, oil, cosmetics, etc. There has been a situation in which dirt and the like are easily attached, and it is difficult to remove dirt even when cleaning, or dirt is not removed even when cleaning. Therefore, it is often performed to strongly remove dirt with a cleaning agent containing an abrasive, or to use a strong cleaning agent such as a mold remover. In such a case,
There is a problem that the surface of the product may be damaged, or the generated chemical substance may cause anxiety about health damage.

[0005] For these reasons, there is an urgent need for an artificial marble having a high antifouling property, which makes it difficult to remove dirt and remove dirt easily.

In general, ordinary polyester-based and vinyl ester-based resins have poor light fastness due to their molecular structure, and artificial marble produced using these resins is used in places subject to the action of light such as sunlight. Was often restricted. Attempts have been made to add ultraviolet absorbers in order to improve such poor light resistance, but at present it has not been possible to obtain a high improvement effect.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides an artificial marble having a high antifouling property, a reduced labor for cleaning dirt, and a long-term cleanliness. It is an object of the present invention to provide a synthetic marble-producing resin composition capable of producing artificial marble that can be used without restriction even in a place where it is exposed to light such as sunlight with high light resistance. It is an object of the present invention to provide a resin composition for producing artificial marble.

[0008]

The resin composition for producing artificial marble according to claim 1 of the present invention is a resin composition used for producing artificial marble by molding and curing,
The thermosetting resin is characterized in that a curing agent and a filler selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide are blended.

[0009] The resin composition for producing artificial marble according to claim 2 of the present invention is a resin composition used for producing artificial marble by molding and curing.
It is characterized by comprising a hardening agent and a composite of aluminum hydroxide and one selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate and magnesium hydroxide as a filler.

[0010] The resin composition for producing artificial marble according to claim 3 of the present invention is a resin composition used for producing artificial marble by molding and curing.
It is characterized by comprising a hardening agent and a composite of silica and one selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide as a filler.

[0011] The resin composition for producing artificial marble according to claim 4 of the present invention is a resin composition used for producing artificial marble by molding and curing.
It is characterized by comprising a compound selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide as a curing agent and a filler, and a complex of aluminum hydroxide and silica.

The invention of claim 5 is characterized in that, in the above-mentioned claims 1 to 4, at least one of stearic acid and stearic acid salt is further blended as a filler.

[0013] The resin composition for producing artificial marble according to claim 6 of the present invention is a resin composition used for producing artificial marble by molding and curing.
It is characterized by comprising at least one of stearic acid and stearic acid salt as a curing agent and a filler.

[0014] The resin composition for producing artificial marble according to claim 7 of the present invention is a resin composition used for producing artificial marble by molding and curing.
As a curing agent and a filler, a composite of at least one of stearic acid and a stearic acid salt and at least one of aluminum hydroxide and silica is blended.

An eighth aspect of the present invention is characterized in that, in any one of the first to seventh aspects, an ultraviolet absorber and a light stabilizer are blended.

[0016]

Embodiments of the present invention will be described below.

In the present invention, a vinyl ester resin, an acrylic resin, a polyester resin, or the like can be used as the thermosetting resin. These may be used alone or in combination of two or more. it can.

Here, as the vinyl ester resin, a bisphenol type vinyl ester resin or a novolak type vinyl ester resin can be used, or a mixture of both can be used.

The bisphenol type vinyl ester resin is an addition reaction product of a bisphenol type epoxy resin and an acid. Examples of the bisphenol type epoxy resin include bisphenol A type, bisphenol AD type, bisphenol S type and bisphenol F type. Can be used. In addition, novolak type vinyl ester resin
It is an addition reaction product of a novolak type epoxy resin and an acid,
Both bisphenol-type vinyl ester resins and novolak-type vinyl ester resins have a reactive unsaturated group only at both ends. Usually, a styrene monomer, an acrylic monomer, or the like is blended as a crosslinking agent in the vinyl ester resin, but the form is not particularly limited.

The acrylic resin is usually a thermosetting type, such as methyl methacrylate monomer or
A polyfunctional acrylic monomer, a prepolymer, or a polymer, which is a mixture of two or more kinds of acrylic syrup resins, is used, but the form is not particularly limited.

Further, the polyester resin is synthesized as a thermosetting resin by subjecting an unsaturated dibasic acid such as maleic anhydride and a saturated dibasic acid such as phthalic anhydride to a condensation reaction with glycols. A compound having an unsaturated bond and an ester bond in the molecule is used. Usually, a styrene monomer, an acrylic monomer, or the like is blended in this resin as a cross-linking agent, and is called an unsaturated polyester resin, but the form is not particularly limited.

Also, vinyl ester resin, acrylic resin,
When two or more of the polyester resins are used in combination, the mixing ratio is set to match the desired product quality due to the characteristics of each resin and the interaction with the filler. The mixing ratio is not particularly limited.

In the present invention, magnesium silicate (MgO.SiO) is used as a filler to be added to the resin composition.
_2), colemanite (COLEMANITE ore, colemanite: B ₂ O ₃ · CaO · crystal water), zirconium silicate (ZrO ₂ · SiO _2), calcium silicate salts (CaO · S
iO ₂ ) or magnesium hydroxide (Mg (OH) ₂ ).

These can be independently compounded as a filler. However, when the artificial marble obtained by molding requires workability such as machinability or cutability, it is preferably mixed with aluminum hydroxide having good workability. It is preferable to mix and compound as a composite with aluminum hydroxide, and when forming into a natural granite-like hard artificial marble without requiring much workability, it is mixed with silica and mixed with silica. It is preferable to mix them as a composite. Further, it can be mixed with aluminum hydroxide and silica to form a composite with aluminum hydroxide and silica.

The amount of the filler is preferably in the range of 180 to 300 parts by mass per 100 parts by mass of the thermosetting resin (including the crosslinking agent). If the amount of the filler is less than this range, the impact resistance of the molded artificial marble is excellent, but the heat resistance may not be sufficiently improved.If the amount exceeds this range, the heat resistance is excellent. Impact strength may be reduced.

The smaller the particle size of the filler, the higher the toughness of the artificial marble and the higher the impact resistance, and it is preferable to use a filler having an average particle size of 50 μm or less. However, if the particle size is too small, the dispersibility of the filler may be reduced and the filler may be aggregated.
The lower limit of the average particle size of the filler is preferably set to 3 μm.
Accordingly, the average particle size of the filler is preferably in the range of 3 to 50 μm. However, in order to further enhance the antifouling performance of artificial marble, the average particle size is preferably in the range of 3 to 20 μm.

When the filler is used in the form of a composite with aluminum hydroxide or silica, the compounding amount is 180 to 180 parts by mass of the thermosetting resin (including a crosslinking agent) as a composite.
It is preferable to set in the range of 300 parts by mass. In addition, the filler, aluminum hydroxide, when using the surface of silica previously treated with a silane coupling agent,
The adhesion between the filler and the thermosetting resin can be improved, the dispersibility of the filler can be improved, and the impact resistance of the artificial marble can be further improved.

In the present invention, at least one of stearic acid and stearic acid salt can be used as a filler added to the resin composition. As the stearate, zinc stearate, calcium stearate, magnesium stearate, aluminum stearate, barium stearate, or the like can be used. These can also be used alone as a filler, but it is usually preferable to mix them with at least one of aluminum hydroxide and silica and use them as a composite with aluminum hydroxide and silica. If used alone, the coagulation phenomenon may occur, making uniform dispersion very difficult. When used in a composite form as described above, it is preferable to mix stearic acid or a stearic acid salt in a ratio of 1 to 50 parts by mass with respect to 100 parts by mass of aluminum hydroxide or silica. The compounding amount of stearic acid or stearic acid salt or a composite of these and aluminum hydroxide or silica is set in the range of 180 to 300 parts by mass with respect to 100 parts by mass of the thermosetting resin (including the crosslinking agent). Is preferred.

In the present invention, the filler is selected from the above-mentioned magnesium silicate, colemanite, zirconium silicate, calcium silicate, magnesium hydroxide, or a composite of these with aluminum hydroxide or silica, and stearic acid. At least one of stearates, or a composite of these and aluminum hydroxide or silica can be used in combination. Also in this case, the amount is preferably set in the range of 180 to 300 parts by mass with respect to 100 parts by mass of the thermosetting resin (including the crosslinking agent).

In the present invention, in order to improve the light resistance of artificial marble, it is preferable to add and mix a UV absorber and a light stabilizer as a combined type.

As the ultraviolet absorber, there are benzotriazole type, benzophenone type, salylate type, cyanoacrylate type, triazine type, oxanilide type, nickel complex salt type, etc., and any of them can be used.
There is no particular limitation.

In the present invention, these ultraviolet absorbers and light stabilizers are used in combination, and hindered amine light stabilizers (HALS) can be used as the light stabilizer. Hindered amine light stabilizers are of high molecular weight type,
Various types such as a low molecular weight type and a liquid type are commercially available, and any of them can be used and is not particularly limited. The added amount of the ultraviolet absorber and the light stabilizer is 0.1 to 5.0 in the total amount of the ultraviolet absorber and the light stabilizer with respect to 100 parts by mass of the thermosetting resin (including the crosslinking agent).
The range of parts by mass is preferred. If the addition amount is less than 0.1 part by mass, sufficient light resistance cannot be obtained, and if the addition amount exceeds 5.0 parts by mass, the light resistance will not be further improved. The combined ratio of the UV absorber and the light stabilizer is 5
Although a mass ratio of 0:50 is preferable, it can be arbitrarily set and is not particularly limited.

Further, a curing agent is added to the resin composition of the present invention. Examples of the curing agent include 1,1,3,3-tetramethylbutylperoxy-2-ethylhexaate and t
-Hexyl peroxy 2-ethylhexanoate and the like can be used. When the thermosetting resin is a vinyl ester resin, for example, the mixing ratio of the curing agent is preferably in the range of 0.5 to 5 parts by mass with respect to 100 parts by mass of the total amount of the resin and the crosslinking agent.

The resin composition of the present invention may further contain various additives such as a viscosity reducing agent, an internal mold release agent, a reinforcing material such as glass fiber, and a coloring agent, in addition to the above components. Can also.

In preparing the resin composition of the present invention, first, the above-mentioned filler, ultraviolet absorber and light stabilizer are added to the thermosetting resin, and the curing agent and various additives are added to the specified components. The mixing can be carried out by mixing them in a ratio and stirring and mixing using a stirrer or the like.

In producing artificial marble using the resin composition thus prepared, first, the resin composition is subjected to vacuum degassing under reduced pressure of about 400 to 6666 Pa (3 to 50 Torr). After the defoamed resin composition is opened from a reduced pressure state, it is poured into a mold having a predetermined shape, and the mold is cooled at a temperature of 50 to 110 ° C. for 30 to 12 hours.
This can be done by heating for 0 minutes. By heating in this manner, the copolymerization reaction between the reactive unsaturated group in the thermosetting resin of the resin composition and the polymerizable monomer proceeds, and the resin composition is cured and molded to obtain artificial marble. You can do it.

The artificial marble thus obtained can improve the antifouling performance by the above-mentioned filler contained therein, and can reduce the time and effort for cleaning the dirt, thereby reducing the time required for cleaning. It is possible to keep it clean throughout. And dirt due to use, contamination from detergent, dirt from food, oil, cosmetics, etc. are hard to adhere,
The dirt attached will be easier to remove, and its use in the area of water supply such as toilets, bathrooms, kitchens, etc. will be expanded, and commercialization of wash counters, kitchen counters, bathtubs, wash bowls, etc. will be easier. . In addition, the combination of the ultraviolet absorber and the light stabilizer makes the light resistance very excellent, and enables use in a place where light such as sunlight is affected.

[0038]

Next, the present invention will be described specifically with reference to examples.

Example 1 A vinyl ester resin ("Prominate P-311" manufactured by Takeda Pharmaceutical Co., Ltd.) was mixed with aluminum hydroxide ("CW-308B" manufactured by Sumitomo Chemical Co., Ltd.) and the following A to E A mixture of the substances in a mass ratio of 80:20 was added to 200 parts by mass of the vinyl ester resin.
Parts by weight were added. Further, an ultraviolet absorber (2- (3,5)
-Di-t-butyl-2-hydroxyphenyl) benzotriazole: "TINUVIN320" manufactured by Ciba
And hindered amine light stabilizers (dimethyl succinate,
1- (2-hydroxyethyl) -4-hydroxy-2,
2,6,6-tetramethylpiperidine polycondensate: Cib
a (“TINUVIN 622LD” manufactured by A. Co., Ltd.) was added in an amount of 0.5 parts by mass with respect to 100 parts by mass of the vinyl ester resin, and a curing agent (“Percure W” manufactured by NOF Corporation)
O "), and mixing with a stirrer,
A resin composition was prepared. A: Magnesium silicate (average particle size: 15 μm) B: Collemanite (average particle size: 10 μm) C: Zirconium silicate (average particle size: 5 μm) D: Calcium silicate salt (average particle size: 15 μm) E: Magnesium hydroxide (average particle size: 10 μm) This resin composition was subjected to defoaming under reduced pressure of 2666 Pa (20 Torr) for 30 minutes, poured into a mold, and heated at 90 ° C. for 70 minutes to cure the resin composition, An artificial marble molded as a flat plate having a thickness of 10 mm was obtained.

(Example 2) Acrylic syrup resin ("AC-02" manufactured by Nippon Fellow Co., Ltd.) was added to silica ("CRYSTALITE 2105-30" manufactured by Tatsumori Co., Ltd.).
And the following substances F to J in a mass ratio of 85:15 were mixed with 100 parts by mass of the acrylic syrup resin.
00 parts by mass were added. Further, an ultraviolet absorber (2- (5
-Methyl-2-hydroxyphenyl) benzotriazole: “TINUVINP” manufactured by Ciba) and a hindered amine light stabilizer (dimethyl succinate 1- (2-hydroxyethyl) -4-hydroxy-2,2,6,6) −
Tetramethylpiperidine polycondensate: "TI" manufactured by Ciba
Nuvin 622LD ") is added to each of the acrylic syrup resin in an amount of 0.5 part by mass with respect to 100 parts by mass of the acrylic syrup resin.
Was added in an appropriate amount and mixed with a stirrer to prepare a resin composition. F: Magnesium silicate (average particle size 15 μm) G: Cholemanite (average particle size 10 μm) H: Zirconium silicate (average particle size 5 μm) I: Calcium silicate salt (average particle size 15 μm) J: Magnesium hydroxide (average particle size 10 μm) This resin composition was subjected to a defoaming treatment under reduced pressure of 2666 Pa (20 Torr) for 30 minutes, poured into a mold, and heated at 90 ° C. for 50 minutes to cure the resin composition. An artificial marble molded as a flat plate having a thickness of 12 mm was obtained.

Example 3 To a polyester resin ("Polymer 5450" manufactured by Takeda Pharmaceutical Co., Ltd.), aluminum hydroxide ("CW-308B" manufactured by Sumitomo Chemical Co., Ltd.) and the following substances K to P were used. What was mixed at a mass ratio of: 10
200 parts by mass were added to 100 parts by mass of the polyester resin. Furthermore, an ultraviolet absorber (2- (3,5-di-t)
-Butyl-2-hydroxyphenyl) benzotriazole: “TINUVIN320” manufactured by Ciba) and a hindered amine-based light stabilizer (dimethyl succinate 1- (2
-Hydroxyethyl) -4-hydroxy-2,2,6
6-tetramethylpiperidine polycondensate: “TINUVIN622LD” manufactured by Ciba) was added in an amount of 0.3 part by mass with respect to 100 parts by mass of the vinyl ester resin.
Further, a resin composition was prepared by adding an appropriate amount of a curing agent (“Percure HO” manufactured by NOF Corporation) and mixing with a stirrer. K: Stearic acid L: Zinc stearate M: Aluminum stearate N: Calcium stearate O: Magnesium stearate P: Barium stearate This resin composition is subjected to defoaming under reduced pressure of 2666 Pa (20 Torr) for 30 minutes. Was injected into a mold, and the mold was heated at 90 ° C. for 50 minutes to cure the resin composition, thereby obtaining an artificial marble molded into a 13 mm thick flat plate.

(Example 4) As a thermosetting resin, a vinyl ester resin ("Ripoxy R-80" manufactured by Showa Polymer Co., Ltd.) was used.
4 ") and a polyester resin (" Polymer 5250 "manufactured by Takeda Pharmaceutical Co., Ltd.) at a mass ratio of 50:50, and mixed with aluminum hydroxide (" H "manufactured by Showa Denko KK).
-320 "), a mixture of the following substances Q to U and zinc stearate at a mass ratio of 85: 10: 5 were blended in an amount of 200 parts by mass with respect to 100 parts by mass of the thermosetting resin. Furthermore, an ultraviolet absorber (2- (3,5-di-t-butyl-2)
-Hydroxyphenyl) benzotriazole: Ciba
"TINUVIN 320" and a hindered amine light stabilizer (dimethyl succinate / 1- (2-hydroxyethyl) -4-hydroxy-2,2,6,6-tetramethylpiperidine polycondensate: Ciba " TINUVI
N622LD ") with vinyl ester resin 10
A resin composition was prepared by mixing 0.45 parts by mass with respect to 0 parts by mass, adding a proper amount of a curing agent (“Percure HO” manufactured by NOF Corporation) and mixing with a stirrer. Q: Magnesium silicate (average particle size 10 μm) G: Cholemanite (average particle size 5 μm) H: Zirconium silicate (average particle size 5 μm) I: Calcium silicate salt (average particle size 10 μm) J: Magnesium hydroxide (average particle size 5 μm) This resin composition was subjected to a defoaming treatment under reduced pressure of 2666 Pa (20 Torr) for 30 minutes, poured into a mold, and heated at 90 ° C. for 50 minutes to cure the resin composition. An artificial marble molded as a flat plate having a thickness of 9 mm was obtained.

(Example 5) As a thermosetting resin, a vinyl ester resin ("Ripoxy R-80" manufactured by Showa High Polymer Co., Ltd.) was used.
6 ”) and acrylic syrup resin (“ X ”manufactured by Mitsui Chemicals, Inc.)
E924-1 ") and polyester resin (Takeda Pharmaceutical Co., Ltd.)
("Polymer 5250") manufactured at a mass ratio of 70:10:20. Aluminum hydroxide ("H-320" manufactured by Showa Denko KK) and silica ("CRYSTALITE 2105-30" manufactured by Tatsumori Co., Ltd.)
And the following substances V to Z and stearic acid at 65: 20: 1
What was mixed at a mass ratio of 0: 5 was mixed with a thermosetting resin 100
200 parts by mass were blended with respect to parts by mass. Further, an ultraviolet absorber (2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole: "TINU" manufactured by Ciba
VIN329 ") and a hindered amine light stabilizer (poly [{6- (1,1,3,3-tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl}).
｛(2,2,6,6-tetramethyl-4-piperidyl)
Imino {hexamethylene {(2,2,6,6-tetramethyl-4-piperidyl) imino}]: “C manufactured by Ciba
HIMASSOB 944LD ") with a thermosetting resin 10
A resin composition was prepared by mixing 0.45 parts by mass with respect to 0 parts by mass, adding a proper amount of a curing agent (“Percure WO” manufactured by NOF Corporation) and mixing with a stirrer. V: Magnesium silicate (average particle size 10 μm) W: Cholemanite (average particle size 5 μm) X: Zirconium silicate (average particle size 5 μm) Y: Calcium silicate salt (average particle size 10 μm) Z: Magnesium hydroxide (average particle size 5 μm) This resin composition was subjected to a defoaming treatment under reduced pressure of 2666 Pa (20 Torr) for 30 minutes, poured into a mold, and heated at 90 ° C. for 50 minutes to cure the resin composition. Artificial marble was formed as a flat plate having a thickness of 10 mm.

Comparative Example 1 A resin composition was prepared in the same manner as in Example 1 except that the substances A to E, the ultraviolet absorber, and the light stabilizer were not used. The resin composition was molded in the same manner as in Example 1 to obtain artificial marble.

Comparative Example 2 A resin composition was prepared in the same manner as in Example 2 except that the substances F to J, the ultraviolet absorber, and the light stabilizer were not used. The resin composition was molded in the same manner as in Example 2 to obtain artificial marble.

Comparative Example 3 A resin composition was prepared in the same manner as in Example 3 except that the substances K to P, the ultraviolet absorber, and the light stabilizer were not used. Then, this resin composition was molded in the same manner as in Example 3 to obtain artificial marble.

Comparative Example 4 A resin composition was prepared in the same manner as in Example 4 except that the substances Q to U, zinc stearate, an ultraviolet absorber, and a light stabilizer were not used. did. The resin composition was molded in the same manner as in Example 4 to obtain artificial marble.

Comparative Example 5 A resin composition was prepared in the same manner as in Example 5 except that the substances V to Z, stearic acid, an ultraviolet absorber, and a light stabilizer were not used. . The resin composition was molded in the same manner as in Example 5 to obtain artificial marble.

With respect to the artificial marbles of Examples 1 to 5 and Comparative Examples 1 to 5 obtained as described above, curry and blue ink as contaminants were applied to the surfaces thereof, and then allowed to stand for one day. Then, this product was evaluated for water washability when washed with tap water and washability when washed with a neutral detergent, and the remaining contaminants were visually scored according to the following five levels to prevent contamination. Performance evaluation was performed.

5 = Pollutant is completely removed 4 = Pollutant remains very slightly 3 = Pollutant remains slightly noticeable 2 = Pollutant remains noticeable 1 = Pollutant is almost removed In order to evaluate the light resistance, a color change ΔE after 200 hours was measured by a sunshine weatherometer. Table 1 shows the results.

[0051]

[Table 1]

As can be seen from Table 1, each of the examples was excellent in both water washability and washability, was excellent in antifouling performance, and was also excellent in light resistance.

[0053]

As described above, the resin composition for producing artificial marble according to claim 1 of the present invention is a resin composition used for producing artificial marble by molding and curing,
The thermosetting resin contains a hardening agent and a filler selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide. The cleaning time for dirt cleaning can be reduced, and the cleanliness can be maintained for a long period of time.

The resin composition for producing artificial marble according to claim 2 of the present invention is a resin composition used for producing artificial marble by molding and curing.
A hardening agent and a complex of aluminum hydroxide and one selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide are blended as fillers. It is possible to improve the soiling performance, and it is possible to reduce the trouble of cleaning for soiling and to keep the soiling clean for a long time.

The resin composition for producing artificial marble according to claim 3 of the present invention is a resin composition used for producing artificial marble by molding and curing.
As a hardening agent, and a composite of silica and one selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide as a filler, the antifouling performance of artificial marble is determined by these components. The cleaning time for dirt cleaning can be reduced, and the cleanliness can be maintained for a long period of time.

The resin composition for producing artificial marble according to claim 4 of the present invention is a resin composition used for producing artificial marble by molding and curing.
As a hardening agent, and a complex of magnesium silicate, colemanite, zirconium silicate, calcium silicate, magnesium hydroxide, and a combination of aluminum hydroxide and silica as a filler, artificial marble is used depending on these components. It is possible to improve the antifouling performance of the device, to reduce the trouble of cleaning for cleaning the dirt, and to keep the device clean for a long period of time.

According to a fifth aspect of the present invention, in the first to fourth aspects, at least one of stearic acid and a stearic acid salt is further blended as a filler. The cleaning time for dirt cleaning can be reduced, and the cleanliness can be maintained for a long period of time.

The resin composition for producing artificial marble according to claim 6 of the present invention is a resin composition used for producing artificial marble by molding and curing.
Since at least one of stearic acid and stearic acid salt is blended as a curing agent and a filler, these components can improve the antifouling performance of artificial marble. This makes it possible to maintain cleanliness for a long period of time with less trouble.

The resin composition for producing artificial marble according to claim 7 of the present invention is a resin composition used for producing artificial marble by molding and curing.
As a hardening agent and a filler, a composite of at least one of stearic acid and a stearic acid salt and at least one of aluminum hydroxide and silica are blended, so that these components improve the antifouling performance of artificial marble. It is possible to reduce the trouble of cleaning for cleaning dirt, and to keep the cleanliness for a long time.

According to the eighth aspect of the present invention, since the ultraviolet absorbent and the light stabilizer are blended in the first to seventh aspects, the light resistance of artificial marble can be improved, and the action of light such as sunlight can be reduced. It can be used without restriction in the place where it is received.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C04B 26/18 C04B 26/18 C08K 3/22 C08K 3/22 3/34 3/34 3/36 3 / 36 5/00 5/00 5/09 5/09 C08L 101/00 C08L 101/00 // C04B 111: 54 C04B 111: 54 (72) Inventor Masahiko Suzuki 1-18, Yasuse, Wakamatsu-ku, Kitakyushu-shi, Fukuoka Inside Kitakyushu Matsushita Electric Works Co., Ltd. Kitakyushu Matsushita Electric Works Co., Ltd. (72) Katsuaki Kimoto Inventor, Fukuoka Prefecture, Wakamatsu-ku, Fukuoka Prefecture CD201 CF001 CF031 DE077 DE149 DJ007 DJ018 DK007 EF059 EG039 EG049 EK056 FD017 FD018 FD019 FD049 FD059 FD146 GL02

Claims (8)

[Claims] Claims: 1. A resin composition used for producing an artificial marble by molding and curing, wherein a thermosetting resin comprises:
A resin composition for producing artificial marble, comprising a curing agent and a filler selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide. 2. A resin composition used for producing an artificial marble by molding and curing, wherein the thermosetting resin comprises:
A resin composition for the production of artificial marble, characterized by comprising a hardening agent and a composite of aluminum hydroxide and one selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide as a filler. object. 3. A resin composition used for producing artificial marble by molding and curing, wherein the thermosetting resin comprises:
A resin composition for the production of artificial marble, comprising a curing agent and a composite of silica and one selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate, and magnesium hydroxide as a filler. 4. A resin composition used for producing an artificial marble by molding and curing, wherein the thermosetting resin comprises:
For the production of artificial marble, characterized by comprising a hardening agent and a composite of aluminum hydroxide and silica selected from magnesium silicate, colemanite, zirconium silicate, calcium silicate and magnesium hydroxide as a filler. Resin composition. 5. The resin composition for producing artificial marble according to claim 1, further comprising at least one of stearic acid and a stearic acid salt as a filler. 6. A resin composition used for producing an artificial marble by molding and curing, wherein the thermosetting resin comprises:
A resin composition for producing artificial marble, comprising a curing agent and at least one of stearic acid and a stearic acid salt as a filler. 7. A resin composition used for producing an artificial marble by molding and curing, wherein the thermosetting resin comprises:
A resin composition for producing artificial marble, comprising a compound of at least one of stearic acid and stearic acid salt and at least one of aluminum hydroxide and silica as a curing agent and a filler. 8. The resin composition for producing artificial marble according to claim 1, wherein the resin composition comprises an ultraviolet absorber and a light stabilizer.