Marble chips, method of making said chips and artificial marble made from said chips

FIELD: chemistry.

SUBSTANCE: invention relates to marble chips, method of making said chips and artificial marble made from said chips. The marble chips are made from hardening a polymer composition which contains an acrylic monomer which forms cross bonds, and binding substance selected from a group consisting of halogenated urethane acrylate, halogenated epoxy acrylate and a mixture of said compounds. The method of obtaining the marble chips involves preparation of a polymer composition by adding an acrylic monomer, which forms cross bonds, to the binding substance, hardening the polymer composition and crushing the hardened article.

EFFECT: artificial marble containing marble chips disclosed by the invention may have appearance and texture similar to that of synthetic stone, as well as good thermal processability and mouldability, which are advantages of acrylic artificial marble.

21 cl, 1 tbl, 4 dwg, 10 ex

 

The technical FIELD

The present invention relates to a marble crumb, its preparation and artificial marble obtained by its use. In particular, the present invention relates to a marble crumb obtained by curing a polymer composition that includes a binder based on halogenated acrylate and acrylic monomer, forming a cross connection, the use of which gives a marble crumb good compatibility with the matrix, the specific gravity and abrasive properties similar to those of the matrix, as well as high specific weight, high refractive index and good transparency. The present invention also relates to a method for marble chips and to a method for producing artificial marble, manufactured using marble chips.

PRIOR art

In the General case, on the basis of the used polymer base material, artificial marble can be subdivided into two groups: one of them includes acrylic artificial marble, and the second artificial marble on the basis of unsaturated polyester. Lately acrylic artificial marble was widely used as material for manufacturing various shelves, tables and interior details, such as eg the indicators, like appearance, first-class structure and high wear resistance, exceed those artificial marble on the basis of unsaturated polyester.

Acrylic artificial marble is usually produced by mixing concentrated solution containing methylmethacrylate monomer and poly (methyl methacrylate), inorganic filler particles (which in the present description can be called "marble chips"), which provide an artificial marble having different prints and colors; the dissolution of the polymerization initiator in the mixture with the formation of the suspension; and casting the slurry at a suitable temperature.

To make artificial marble desired pattern and color during its manufacture to the mixture may be added various kinds of artificial marble chips. It should be noted that the value of the finished product of the artificial marble is strongly dependent on the appearance of artificial marble, which added a crushed marble.

Marble chips can be obtained by grinding the cured artificial marble, leading to the marble chips of various sizes. Usually for the manufacture of marble chips used acrylic polymer, i.e. the same material that is used as a matrix in the manufacture of the arts is spent marble.

Recently, for the manufacture of artificial marble, the appearance of which resembles a precious stone, which gives the impression of purity and elegance, apply transparent marble chips - use a different material makes the surface of the artificial marble "uninteresting". The increasing use of this material increases the demand for transparent crumbs.

To date transparent marble chips produced using polymetylmetacrylate polymer or polymer-based unsaturated polyester. However, the specific gravity of a transparent marble chips obtained using polymetylmetacrylate polymer or polymer-based unsaturated polyester is from 1.15 to 1.24, i.e. less than the specific gravity of the matrix artificial marble. Because of the relatively low specific gravity so transparent marble POPs up, appearing on the upper surface of the matrix, and the result is the opposite, i.e. the bottom surface of the artificial marble does not contain transparent marble chips, and distribution of transparent marble chips in the product obtained from such artificial marble, is uneven. In order to obtain uniform distribution of transparent marble chips with a relatively low specific what assay throughout the matrix and on the opposite side of the articles made of artificial marble, you may want to add more than double the number of transparent marble chips compared to the usual amount that is added to the mixture. This can lead to difficulties in obtaining the desired thickness of the artificial marble.

To increase the specific mass of marble chips up to values of specific mass matrix in the composition used for the manufacture of marble chips may be added inorganic fillers such as aluminum trihydrate, barium sulfate, silicon oxide, etc. However, the addition of such inorganic fillers may create some difficulties. For example, can be significantly reduced transparency marble chips.

Artificial marble type synthetic stone (stone), for the manufacture of which use natural silica such as quartz, silica sand, crystals of silicon oxide, etc. or vitreous silica, such as glass, fused glass, etc. may contain transparent crumb. However, these artificial marble type stone can have a number of disadvantages. For example, the manufacturer specified with-stones with traditional continuous production methods may be difficult, since the transparent crumb tends to be precipitated, and, in addition, transparent baby has low SHL what Tuamotu.

In this regard it should be noted that the Mohs hardness of the acrylic polymer used as matrix material for stone differs from the hardness of the material of the transparent chips, i.e. silicon oxide or derivatives of silicon oxide. In the articles of artificial marble type stone does not have good smoothness and flatness.

Given the above, it is necessary to take into account that to prevent settling and ensure uniform distribution of the transparent chips used for the manufacture of artificial marble, inside and articles made of artificial marble, regardless of the time of curing the transparent chips should have the same specific weight as the matrix; and in order to obtain an artificial marble differed a good smoothness and flatness, the abrasive properties of the transparent chips must meet the abrasive properties of the matrix, and, in addition, transparent crumbs must have a high refractive index.

Accordingly, the authors present invention has developed a marble crumb, having good compatibility with the matrix, the specific gravity and abrasive properties similar to those of the matrix, a high specific weight, high refractive index and good transparency. Marble chips can be manufactured by Garrett, Borg is on curing resin composition, includes acrylic monomer, forming a cross connection, and the binder on the basis of the halogenated acrylate.

The INVENTION

Technical task

The present invention is to create a marble crumb, specific gravity is approximately 1.50 to 1.67, and in the development of the method it was received.

Another objective of the present invention is to create a marble chips, which allows the manufacture of artificial marble having a uniform pattern, regardless of the curing time or the time of molding, and in the development of the method it was received.

Another objective of the present invention is to create a marble crumb, having a good transparency and refractive index, and in the development of the method it was received.

Another objective of the present invention is to create a marble crumb, which has a grindability and a Mohs hardness, similar to those of the matrix used for the manufacture of artificial marble, and in the development of the method it was received.

Another objective of the present invention is to create a marble crumb, having good compatibility with the matrix used for the manufacture of artificial marble, and in the development of the method it was received.

Another objective of the present invention comp is it in creating a marble crumb, providing a three-dimensional visual effect of the artificial marble, and in the development of the method it was received.

Another objective of the present invention is to create a marble crumb, with good dispersibility with respect to the pigment and good compatibility with the matrix, in which crushed marble does not form a concave surface.

Another objective of the present invention is to create a marble crumb, having a high chemical resistance, and in the development of the method it was received.

Another object of the present invention to provide an artificial marble made using marble chips, appearance and texture similar appearance and texture of synthetic stone.

Another object of the present invention to provide an artificial marble made using marble chips by using a continuous production method.

Another object of the present invention to provide an artificial marble made using marble chips, with good ability to heat processing.

Another object of the present invention to provide an artificial marble made using marble chips having a good flatness.

Druganaut and advantages of the present invention will be clear from the following description and the accompanying claims.

Technical solution

One aspect of the present invention relates to a marble crumb, which can be obtained by curing a polymer composition, comprising an acrylic monomer, forming a cross connection, and a binding agent. The binder may be selected from the group consisting of halogenated urethaneacrylate, halogenated epoxyacrylate and mixtures of these compounds.

In some embodiments the invention, the polymer composition comprises an acrylic monomer, forming a cross connection in the amount of approximately from 10 to 50 mass. parts, and the binder in the amount of approximately from 50 to 90 mass. parts, calculated on the weight of the polymeric composition. The polymer composition may also include one or more additives such as a coloring agent, a hardener, non, modifier, UV absorbers, light-diffusing agent, a polymerization inhibitor, etc.

In some embodiments of the invention Brednikova molecular weight halogenated urethaneacrylate is in the range from approximately 900 to 4000. In some embodiments of the invention Brednikova molecular weight halogenated urethaneacrylate is in the range from about 600 to 3500./p>

In some embodiments the invention, the polymer composition may also include an agent that forms a cross connection selected from the group consisting of a styrene monomer, a halogenated styrene, vinyltoluene, diallyldimethyl, diallylphthalate, diallylmalonate, divinylbenzene, α-methylstyrene, dimer of α-methylstyrene and mixtures of these compounds.

In some embodiments of the invention the polymer composition used to obtain a marble crumb, can itself contain marble chips, which allows you to get crumbs like "crumbs in the crumb"in which inside the grain one marble crumb grain is another marble chips.

In some embodiments the invention, the polymer composition includes at least two polymeric composition, which can vary in color and/or transparency that allows you to get the crumbs with a wavy pattern and/or a multi-layered structure.

Another aspect of the present invention relates to an artificial marble, which contains crumbs.

Another aspect of the present invention relates to a method of obtaining a marble crumb. This method includes preparing a polymer composition by adding an acrylic monomer, forming a cross connection, due to the existing substance, selected from the group consisting of halogenated urethaneacrylate, halogenated epoxyacrylate and mixtures of these compounds; curing the polymer composition with the formation of the cured product; and grinding the cured product to obtain a marble crumb.

In some embodiments of the invention to promote curing of the composition in the polymer composition may be added to the curing agent in the amount of approximately from 0.03 to 2.5 wt. parts per 100 mass. parts of the polymeric composition.

In some embodiments of the invention utverjdenie product is crushed to obtain particles whose size is approximately from 0.1 mm to 50 mm

In some embodiments of the invention on utverjdenie product precipitated metal, and then crushed to obtain particles.

In some embodiments the invention, the polymer composition further includes an additive, for example, a dye, non, modifier, UV absorbers, light-diffusing agent, a polymerization inhibitor, etc.

In some embodiments the invention, the polymer composition further includes marble chips, which allows you to get crumbs like "crumbs in the crumb".

In some variants of the Ah the invention, the polymer composition may also include an agent, forming cross-links, for example, styrene monomer, a halogenated styrene, vinyltoluene, diallyldimethyl, diallylphthalate, diallylmalonate, divinylbenzene, α-methylsterols, dimer of α-methylstyrene, etc.

In some embodiments the invention, the polymer composition includes a variety of polymer compositions that differ from each other, for example, by color and/or transparency that allows you to get the crumbs with a wavy pattern or a multi-layered structure.

In some embodiments the invention, the specific mass of the marble chips, obtained in accordance with the methods described in the present description, may be approximately 1.50 to 1.67.

Artificial marble obtained according to the present invention, contains a marble crumb, described by the present invention.

DESCRIPTION of GRAPHIC MATERIALS

Figure 1 presents a photograph, which shows a picture of the surface of the artificial marble obtained in accordance with Example 5.

Figure 2 presents a photograph, which shows a picture of the surface of the artificial marble obtained in accordance with Example 6.

Figure 3 presents a photograph, which shows a picture of the surface of the artificial marble obtained in accordance with Example 9.

<> Figure 4 presents a photograph, which shows a picture of the surface of the artificial marble obtained in accordance with Example 10.

INFORMATION. CONFIRMING the POSSIBILITY of carrying out the INVENTION

Crushed marble, proposed according to the present invention can be obtained by curing a polymer composition, comprising an acrylic monomer, forming a cross connection, and a binding agent. The binder may be selected from the group consisting of halogenated urethaneacrylate, halogenated epoxyacrylate and mixtures of these compounds.

The amount of acrylic monomer, forming cross-links in the polymeric composition may comprise from about 10 to 50 mass. parts, preferably from about 10 to 40 mass. parts, and more preferably, from about 10 to 30 mass. parts, calculated on the weight of the polymeric composition.

The amount of binder in the polymer composition can be from about 50 to 90 mass. parts, preferably from about 60 to 90 mass. parts, and more preferably, from about 70 to 90 mass. parts, calculated on the weight of the polymeric composition. If the amount of the binder is less than about 50 mass. parts, the specific mass of the marble chips obtained from tachikomatic, may be not large enough. On the other hand, if the amount of the binder exceeds approximately 90 mass. parts, you can significantly increase the viscosity of the polymeric composition, which complicates the control method of manufacturing a marble crumb.

The binder used according to the present invention, are selected from the group consisting of halogenated urethaneacrylate, halogenated epoxyacrylate and mixtures of these compounds. Most preferred of these compounds is halogenated epoxyacrylate.

The polymer composition may also include conventional additives such as coloring agent, a hardener, non, modifier, UV absorbers, light-diffusing agent, a polymerization inhibitor, antistatic agent, flame retardant, thermo stabilizer, etc. are examples of the dyes include inorganic and organic pigments, dyes, etc. the Amount of dye may be approximately from 0.0001 to 10.0 wt. parts, calculated on the weight of the polymeric composition.

Brednikova molecular weight halogenated urethaneacrylate is preferably from about 900 to 4000. Brednikova molecular weight halogenated epoxyacrylate preferably sostavlyayushchaya from 600 to 3500. If Brednikova molecular weight is less than the above values, the number of cross-links in a single volume may be too large, and marble chips will be fragile. On the other hand, if Brednikova molecular weight exceeds the above values, the number of cross-links may be too low, and marble chips may be soft, which may complicate controlling method of manufacturing a marble crumb due to the high viscosity.

Examples of acrylic monomers, which form cross-links include methyl methacrylate, ethyl methacrylate, 2-ethylhexylacrylate, octylacrylate, dodecylammonium, octadecylammonium, methylcyclohexylamine, isobornylacrylat, fenilsalicilat, bezelmaterial, chlorophenylalanine, methoxyphenylacetyl, bromophenylacetate, ethylene glycol-dimethacrylate, 1,2-propilenglikolstearat, 1,3-butanediol-dimethacrylate, 1,3-propilenglikolstearat, 1,4-butanediol-dimethacrylate, 1,5-pentanediol-dimethacrylate, neopentylglycol-dimethacrylate, diethylene glycol-dimethacrylate, triethylene glycol-dimethacrylate, dipropyleneglycol-dimethacrylate, trimethylolpropane-trimethacrylate, pentaerythritol-trimethacrylate, pentaerythritol-cerametallic, dipentaerythritol-hexametrical, ethoxyethylacetate epoxyacrylate glits delovogo of methacrylic acid, 1,6-hexanediol-dimethacrylate, glycerol-trimethacrylate, methylpropanol-dimethacrylate, polyethylene glycol-dimethacrylate, etc. as well as mixtures of these compounds.

In some embodiments the invention, the polymer composition may also include an agent that forms a cross connection selected from the group consisting of a styrene monomer, a halogenated styrene, vinyltoluene, diallyldimethyl, diallylphthalate, diallylmalonate, divinylbenzene, α-methylstyrene, dimer of α-methylstyrene and mixtures of these compounds.

In some embodiments of the invention the polymer composition is proposed according to the present invention may also include marble chips, which allows you to get crumbs inside the grains which is crushed marble. That is, adding marble chips into the polymer composition obtained from this marble can be a marble crumb type "crumbs in the crumb, in which at least one grain crumb is inside another grain crumbs. To obtain a marble crumb added to the polymer composition for the manufacture of polymer compositions like "crumbs in the crumb can be used marble chips produced according to the present invention, traditional marble chippings obtained from what Elenium artificial marble, produced in the traditional way, or a mixture of these substances.

In some embodiments the invention, the polymer composition includes a variety of polymer compositions, which may differ from each other in color and/or transparency. The use of several (many) polymer compositions, distinguished by color and/or transparency, allows you to get the marble chips, which can have a wavy pattern or a multilayer structure.

Another aspect of the present invention relates to a method of obtaining a marble crumb. This method includes preparing a polymer composition by adding an acrylic monomer, forming a cross connection to a binder substance selected from the group consisting of halogenated urethaneacrylate, halogenated epoxyacrylate and mixtures of these compounds;

curing the polymer composition with the formation of the cured product; and grinding the cured product.

The polymer composition includes a binder and an acrylic monomer, forming a cross connection. The polymer composition may also include conventional additives such as dye, non, modifier, UV absorbers, light-diffusing agent, a polymerization inhibitor, an antistatic agent, Agnes the protective composition, thermo stabilizer, etc. or mixtures of these substances.

In some embodiments of the invention, the curing is performed under the action of the hardener. Non-limiting examples of curing agents include benzoyl peroxide, eurailpress, bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE etc. the Amount of curing agent may range from about 0.03 to 2.5 wt. parts, preferably from about 0.05 to 2.0 mass. parts per 100 mass. parts of the polymeric composition. The type of surgery curing is not limited to any particular method. For example, the polymer composition may be overiden at a temperature of from about 50°C. to 180°C. In some embodiments of the invention can be used additive that controls the speed of curing. As an additive, controlling the rate of curing may be used in derived amine-derived sulfonic acid or salt of the metal-containing soap. Examples of salts of metal Soaps include salt soap, containing copper, cobalt, potassium, calcium,zirconium, zinc.

In some embodiments of the invention utverjdenie product is crushed to obtain particles of an average size from about 0.1 mm to 50 mm Grinding can be made in any suitable way is, known in this technical field.

In some embodiments of the invention on utverjdenie product precipitated metal, such as aluminum or silver, and then crushed to obtain particles. Thus obtained marble chips may be formed into a three-dimensional visual effect similar to a precious stone, artificial marble containing marble chips, which precipitated metal may resemble marble, inlaid with precious stones.

In some embodiments of the invention the polymer composition also includes marble chips. Specified marble chips may be transparent, translucent, opaque, or a mixture of these materials. As marble chips added to the polymer composition can be used marble chips, proposed according to the present invention, obtained by conventional methods, acrylic crushed marble or marble chips based on unsaturated polyester, or a mixture of these materials. Adding marble chips into the polymer composition can be obtained from such a composition marble chips of type "crumbs in the crumb, in which at least one grain crumb is inside another grain crumbs. The use of the above a marble crumb type "crumbs in the crumb" p is adequate to obtain an artificial marble, with different designs.

In some embodiments the invention, the polymer composition may also include an agent that forms a cross-link, such as styrene monomer, a halogenated styrene, vinyltoluene, diallyldimethyl, diallylphthalate, diallylmalonate, divinylbenzene, α-methylsterols, dimer of α-methylstyrene, etc.

In some embodiments the invention, the polymer composition may include a variety of polymer compositions that differ from each other, for example, by color and/or transparency, and thus get crushed marble with a large specific gravity can have a wavy pattern or a multilayer structure. For example, prepare two or more polymeric compositions that differ from each other by color and/or transparency. Then the polymer composition simultaneously loaded onto the conveyor belt, getting utverjdenie product, which has a wavy picture. Received utverjdenie the product is crushed, getting crumbs with a wavy pattern. When using two or more polymer compositions they may be a transparent polymer composition and opaque polymer composition.

Specific mass of the marble chips, proposed according to the present invention, may be approximately 1.50 to 1.67,preferably approximately from 1.57 to 1.64.

Artificial marble, proposed according to the present invention contains described in the present work crumbs.

Cultured marble is made by mixing marble particles obtained in accordance with the present description, and concentrated polymer solution, resulting in a get-curable composition, followed by curing the curable composition in the traditional way. The concentrated polymer solution may be a solution of acrylic resin or unsaturated polyester, preferably an acrylic polymer. Curable composition may also include an inorganic filler such as calcium carbonate, aluminum hydroxide, silicon oxide, aluminum oxide, barium sulfate, magnesium hydroxide, etc. or other conventional additives. The choice of the percentage of added inorganic filler or additives, or the way they are added is not limited to any particular value or method and can be any conventional or convenient values or methods known in the art.

Through the use of marble chips described in the present work, the specific gravity of which may be approximately 1.50 to 1.67, artificial marble, proposed according to the present invention, which may be uniform in the picture, regardless of the curing time or the time of molding, and can be manufactured using a continuous production method.

Artificial marble, including marble chips, proposed according to the present invention may be used for the manufacture of various products, such as kitchen countertops, kitchen sinks, dressing tables, dressing tables, various countertops, interior parts, etc. because the appearance and texture of the proposed marble similar appearance and texture synthetic stone, and, in addition, the proposed marble has good formability.

Artificial marble can also be crushed to form particles that can be used to obtain another marble chips of type "crumbs in the crumb", inside the grains which are grain transparent crumbs.

The invention is described in more detail using the following Examples, which are presented to illustrate the present invention and in no way limit the scope protected by the present invention, which is defined by the attached claims. Unless otherwise indicated, the following Examples all parts and percentages are mass part and the mass percentage.

DESCRIPTION of embodiments of the INVENTION

Examples 1-4: Preparation of marble chips

Example 1

Mixed polymer composition (100 mass. parts, of which 85 mass. h the stay was octabromodiphenyl urethane acrylate, 5 masses. parts were Postira, and 10 mass. parts were methyl methacrylate), 0.2 mass. part in terms of the weight of the polymeric composition of benzoyl peroxide and 0.5 mass. parts, calculated on the weight of the polymeric composition bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE. The mixture was subjected to curing at 50°C. Utverjdenie the product is then crushed, getting crumbs, specific weight was 1,597.

Example 2

Example 2 was performed in accordance with the instructions of Example 1, with the only exception that the mixture comprised of polymer composition (100 mass. parts, of which 80 of the masses. parts were octabromodiphenyl epoxyacrylate, 5 mass. parts constituted of styrene monomer, 15 mass. parts were methyl methacrylate), 0.01 mass. parts, calculated on the weight of the polymeric composition Phthalocyaninato Green, used as a dye, 0.2 mass. part in terms of the weight of the polymeric composition of benzoyl peroxide that is used as the curing agent, and 0.2 mass. part in terms of the weight of the polymeric composition bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE. Specific mass of the marble chips obtained from this composition was 1,595, and marble chips had a green color.

Example 3

Example 3 was performed in accordance with the instructions of Example 1, except that the mixture is excluded polymer composition (100 mass. parts, of which 85 mass. parts were octabromodiphenyl epoxyacrylate, 5 mass. parts constituted of styrene monomer, and 10 mass. parts were methyl methacrylate), 0.2 mass. part in terms of the masses of the su polymer compositions of benzoyl peroxide and 0.2 mass. parts, calculated on the weight of the polymeric composition bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE. Specific mass of the marble chips obtained from this composition was 1,624.

Example 4

Example 4 was performed in accordance with the instructions of Example 1, with the only exception that the mixture comprised of polymer composition (100 mass. parts, of which 85 mass. parts were octabromodiphenyl epoxyacrylate and 15 mass. parts were methyl methacrylate), 0.2 mass. part in terms of the weight of the polymeric composition of benzoyl peroxide and 0.5 mass. parts, calculated on the weight of the polymeric composition bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE. Specific mass of the marble chips obtained from this composition was 1,618.

Comparative Example 1

Comparative Example 1 was performed in accordance with the instructions of Example 1, with the only exception that the mixture comprised of polymer composition (100 mass. parts, of which 90 mass. parts were octabromodiphenyl urethaneacrylate, and 10 mass. parts constituted of styrene monomer), 0.2 mass. part in re the couple on the weight of the polymeric composition of benzoyl peroxide and 0.5 mass. parts, calculated on the weight of the polymeric composition bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE. Specific mass of the marble chips obtained from this composition was 1,601.

Comparative Example 2

Comparative Example 2 was performed in accordance with the instructions of Example 1, with the only exception that the mixture comprised of polymer composition (100 mass. parts, of which 80 of the masses. parts were octabromodiphenyl epoxyacrylate and 20 mass. parts constituted of styrene monomer), 0.2 mass. part in terms of the weight of the polymeric composition of benzoyl peroxide and 0.5 mass. parts, calculated on the weight of the polymeric composition bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE. Specific mass of the marble chips obtained from this composition was 1,583.

Comparative Example 3

Comparative Example 3 was performed in accordance with the instructions of Example 1, except that the mixture consisted of a concentrated solution (100 mass. parts of which were polymethylmethacrylate and methylmethacrylate monomer), 2 mass. part in recalculation on weight of a concentrated solution of trimethylpyrazine, 0,1 masscult in recalculation on weight of a concentrated solution of n-dodecylmercaptan and 1.0 mass. part in recalculation on weight of a concentrated solution of benzoyl peroxide. Specific weight is and marble chips, received from the specified composition was 1,183.

Comparative Example 4

Comparative Example 4 was performed in accordance with the instructions of Example 1, except that the mixture consisted of 100 mass. parts of the polymer based on unsaturated polyester (manufactured Aekyung Chemical Co., TP-145X) and 1.0 mass. part of benzoyl peroxide. Specific mass of the marble chips obtained from this composition was 1,203.

Comparative Example 5

Comparative Example 5 was performed in accordance with the instructions of Example 1, except that the mixture consisted of 100 mass. parts of the polymer based on vinyl ether (manufactured Aekyung Chemical Co., DION-9120; polymer based on vinyl ether consisted of 60 mass. parts of the oligomer of epoxyacrylate and 40 mass. parts styrene monomer) and 1.0 mass. part of benzoyl peroxide. Specific mass of the marble chips obtained from this composition was 1,194.

Examples 5-8: Production of artificial marble

Example 5

50 masses. parts of marble chips, obtained in accordance with the instructions of Example 1, was added to the composition for artificial marble, which was prepared by mixing 100 mass. parts of concentrated solution (consisting of polymethyl methacrylate and methyl methacrylate monomer), 180 massdata aluminum hydroxide, 2 mass. parts of trimet is preventionrelated, 0.1 mass. part n-dodecylmercaptan, 0.1 mass. part of the non, 0.1 mass. part of the dispersing agent and 1.0 mass. part of benzoyl peroxide; the result has been curable composition. Curable composition was well mixed and subjected to curing at 60°C in accordance with the method of continuous molding, leading to the artificial marble. Photograph of the obtained artificial marble is shown in figure 1.

Example 6

Example 6 was performed in accordance with the instructions of Example 5, except that used color transparent marble chips, obtained in accordance with the instructions of Example 2. Photograph of the obtained artificial marble shown in figure 2.

Example 7

Example 7 was performed in accordance with the instructions of Example 5, except that used marble chips, obtained in accordance with the instructions of Example 3.

Example 8

Example 8 was performed in accordance with the instructions of Example 5, except that used marble chips, obtained in accordance with the instructions of Example 4.

Comparative Example 6

Comparative Example 6 was performed in accordance with the instructions of Example 5, except that used marble chips, obtained in accordance with the instructions of Comparative Example 1.

Comparative the Example 7

Comparative Example 7 was performed in accordance with the instructions of Example 5, except that used marble chips, obtained in accordance with the instructions of Comparative Example 2.

Comparative Example 8

Comparative Example 8 was performed in accordance with the instructions of Example 5, except that used marble chips, obtained in accordance with the instructions of Comparative Example 3.

Comparative Example 9

Comparative Example 9 was performed in accordance with the instructions of Example 5, except that used marble chips, obtained in accordance with the instructions of Comparative Example 4.

Comparative Example 10

Comparative Example 10 was performed in accordance with the instructions of Example 5, except that used marble chips, obtained in accordance with the instructions of Comparative Example 5.

The physical properties of the artificial marble obtained in accordance with the instructions of Examples 5-8 and Comparative Examples 6-10, are shown in the following table 1:

Physical properties were determined as follows:

(1) Chemical resistance (chemical resistance):

evaluated the surface of the marble chips after keeping products 1.0 N. hydrochloric acid who you and 1.0 N. aqueous ammonia solution at 25°C for 48 hours.

(2) refractive Index: the refractive index was measured on the Refractometer ABBA (ST) at 25°C.

(3) Flatness: surface artificial marble were subjected to grinding, and then visually evaluated flatness of the interface between the grains of marble chips and the matrix.

(4) the Grindability: the surface of the artificial marble was subjected to grinding with emery paper, and then visually evaluated the appearance of marble chips.

(5) Formation of the concave surface: formation of the concave surface was evaluated visually according to the, there are cracks between marble chips and the matrix, or has there been any settling marble chips.

(6) Thermoablative: artificial marble was subjected to heating at 180°C for 20 minutes, and then made a cut along the curve. Thermoablative was evaluated by measuring the minimum radius at which there was no cracking or protrusion of the edges of the grains of marble chips per slice.

As shown in table 1, the materials obtained in accordance with the instructions of Examples 5-8, have good physical properties, in particular good thermoablative with a radius of 150 mm Despite the fact that marble chippings obtained in Comparative Examples 6 and 7, there is and the greater the specific gravity, in the study of lifemost marble chips were subjected to cracking and had reduced thermoablative. Despite the fact that marble granules obtained in Comparative Example 8, had a good thermoablative, distribution marble chips on the surface of the artificial marble was unsatisfactory. In addition, the value of the refractive index of marble chips, obtained in accordance with Comparative Example 8 was too low and was not allowed to get a texture similar to that of quartz; thus, the appearance of the obtained artificial marble was not consistent with the appearance of synthetic stone. The distribution of the transparent chips, obtained in accordance with Comparative Example 9, on the surface of the artificial marble was unsatisfactory, thermoablative and chemical resistance were reduced, and, in addition, observed the formation of the concave surface. The distribution of the transparent chips, obtained in accordance with Comparative Example 10, the surface of the artificial marble was uneven, it was not possible to apply to obtain a continuous production method.

Example 9: Production of artificial marble containing marble chips of type "crumbs in the crumb"

10 mass. parts of marble chips, prigot is run by the grinding acrylic artificial marble to obtain a particle size of from 0.01 mm to 5 mm, added to polymer compositions obtained in accordance with Example 2, and then subjected to curing. Utverjdenie product was crushed, getting crumbs. Got crumbs like "crumbs in the crumb"in which inside the grains of marble chips were colored particles. The obtained grain type grit in the grit used for artificial marble, which were made in accordance with the instructions of Example 5, except that instead of the usual marble chips used the baby type the baby in the baby. Photograph of the obtained artificial marble shown in Figure 3.

Example 10: Production of artificial marble containing crumbs with wavy pattern

Polymer composition (a) and polymer composition (b) were made using the following methods, respectively. Polymer composition (a) was prepared by adding 0.1 mass. part of the carbon black used as a dye to polymer compositions obtained in accordance with Example 1. Polymer composition (b) was prepared by adding 0.1 mass. parts of red iron oxide pigment is used as dye to polymer compositions obtained in accordance with Example 1. The same number of polymer compositions (a) and (b) simultaneously downloaded Le is the conveyor and subjected to curing, getting utverjdenie product with a wavy pattern. Utverjdenie product was crushed, receiving particles whose size was in the range of from 0.1 mm to 30 mm, which was marble chips with a wavy pattern. Artificial marble made in accordance with the instructions of Example 5, except that used marble chips with a wavy pattern obtained in accordance with the foregoing. Photograph of the obtained artificial marble shown in Figure 4.

The implementation of the present invention is provided to a person skilled in the art. In the invention can be produced modifications and changes without going beyond the scope protected by the present invention and defined by the attached claims.

1. Artificial marble obtained by grinding utverzhdenii polymeric composition including an acrylic monomer, forming a cross connection, and a binder selected from the group consisting of halogenated urethaneacrylate, halogenated epoxyacrylate and mixtures of these compounds.

2. Crushed marble according to claim 1, in which the polymer composition includes a binder in the amount of approximately from 50 to 90 parts by weight, and acrylic monomer, forming a cross connection, the quantity, of approximately from 10 to 50 parts by weight of

3. Crushed marble according to claim 1, in which the polymer composition includes one or more additives selected from the group consisting of a dye, hardener, non, modifier, an absorber of ultraviolet radiation, a light-diffusing agent, polymerization inhibitor, antistatic agent, flame retardant, thermo stabilizer and mixtures of these additives.

4. Crushed marble according to claim 1, in which Brednikova molecular weight halogenated urethaneacrylate approximately from 900 to 4000, and Brednikova molecular weight halogenated epoxyacrylate approximately from 600 to 3500.

5. Crushed marble according to claim 1 in which the acrylic monomer, forming cross-links, which are selected from the group consisting of: methyl methacrylate, ethyl methacrylate, 2-ethylhexylacrylate, octylacrylate, dodecylmercaptan, octadecylsilane, methylcyclohexylamine, isobutylacetate, fenilsalicilata, benzylmethylamine, chloronicotinate, methoxyphenylacetate, bromophenylacetate, ethylene glycol-dimethacrylate, 1,2-propilenglikolstearat, 1,3-butanediol-dimethacrylate, 1,3-propilenglikolstearat, 1,4-butanediol-dimethacrylate, 1,5-pentanediol-dimethacrylate, neopentylglycol-dimethacrylate, diethyl who glycol dimethacrylate, triethylene glycol-dimethacrylate, dipropyleneglycol-dimethacrylate, trimethylolpropane-trimethacrylate, pentaerythritol-trimethacrylate, pentaerythritol-tetramethylaniline, dipentaerythritol-hexametrical, ethoxyethylacetate, epoxyacrylate pilgramage of methacrylic acid, 1,6-hexanediol-dimethacrylate, glycerol-trimethacrylate, methylpropanol-dimethacrylate, polyethylene glycol-dimethacrylate, and mixtures of these compounds.

6. Crushed marble according to claim 1, further comprising an agent that forms a cross connection selected from the group consisting of a styrene monomer, a halogenated styrene, vinyltoluene, diallyldimethyl, diallylphthalate, diallylmalonate, divinylbenzene, α-methylstyrene, dimer of α-methylstyrene and mixtures of these compounds.

7. Crushed marble according to claim 1, in which the polymer composition further includes marble chips.

8. Crushed marble according to claim 1, further comprising at least two polymer compositions, differing in color and/or transparency from the polymer composition defined in claim 1.

9. Artificial marble containing marble chips according to any one of claims 1 to 8.

10. The method of obtaining a marble crumb, including:
preparation of polymeric compositions by adding an acrylic monomer, forming a cross connection, glue substance in uraemia from the group consisting of halogenated urethaneacrylate, halogenated epoxyacrylate and mixtures of these compounds;
curing the polymer composition with the formation of the cured product and
grinding the cured product.

11. The method according to claim 10, in which to cure the polymer composition add the hardener in the amount of approximately from 0.03 to 2.5 parts by weight per 100 parts by weight of the polymer composition.

12. The method according to claim 10, in which utverjdenie product is crushed to obtain particles whose size is approximately from 0.1 to 50 mm

13. The method according to claim 10, in which utverjdenie product precipitated metal, and then crushed to obtain particles.

14. The method according to claim 10, in which the polymer composition further includes an additive selected from the group consisting of a dye, non, modifier, an absorber of ultraviolet radiation, a light-diffusing agent, polymerization inhibitor, antistatic agent, flame retardant, thermo stabilizer and mixtures of these additives.

15. The method according to claim 10, in which the polymer composition further includes marble chips.

16. The method according to item 15, in which marble is a marble chips according to claim 1, crumbs on the basis of acrylic or crumbs on the basis of unsaturated polyester or with the offer.

17. The method according to claim 10, in which the polymer composition further includes an agent that forms a cross connection selected from the group consisting of a styrene monomer, a halogenated styrene, vinyltoluene, diallyldimethyl, diallylphthalate, diallylmalonate, divinylbenzene, α-methylstyrene, dimer of α-methylstyrene and mixtures of these compounds.

18. The method according to claim 10, further comprising at least two polymer compositions, differing in color and/or transparency from the polymer composition defined in claim 1.

19. The method according to p, comprising preparing at least two polymer compositions that differ from each other by color and/or transparency, simultaneous loading of polymer compositions onto the conveyor belt and hardening polymer compositions.

20. Marble chippings obtained according to any one of PP-19, the specific gravity is approximately 1.50 to 1.67.

21. Artificial marble containing marble chips, obtained in paragraph 20.



 

Same patents:

FIELD: chemistry.

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EFFECT: improved physical and chemical properties of the composition, control of rheological properties, positive effect on coefficient of friction.

34 cl, 3 dwg, 13 tbl, 4 ex

FIELD: polymerizable adhesives.

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14 cl, 1 dwg, 4 tbl, 30 ex

FIELD: polymer materials.

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15 cl, 2 tbl, 3 ex

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16 cl, 2 tbl, 3 ex

FIELD: chemistry.

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EFFECT: improved heat resistance, fire resistance and chemical resistance.

3 cl, 4 ex

FIELD: construction industry.

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2 tbl, 4 ex

FIELD: chemistry of polymers, chemical technology.

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EFFECT: valuable technical properties of composition.

4 tbl, 8 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to preparation of polymer compositions suitable for sealing electrical articles and provides polymer composition including, wt parts: electrical insulation compound (KP-303B) based on oligoether acrylate and unsaturated epoxy ether resin, 90-11; siloxane low-molecular weight rubber, 9-11; catalyst, 0.3-0.5; powderlike quartz, 60-70; alumina, 60-70; and ground talk, 30-35. Claimed composition is prepared by adding preliminarily prepared powderlike quartz, alumina, and ground talk to mixture of : electrical insulation compound, low-molecular weight rubber, and catalyst followed by evacuation and stepwise curing of resulting mixture. Composition is suitable to fill high-voltage metal-loaded objects.

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2 cl, 2 tbl

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Polymer composition // 2230082
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The invention relates to techniques for the production of polymer composite materials used in various fields of national economy, mainly in the aircraft industry, and can be used for continuous production of combustible specialized products, primarily fiberglass, pultrusion
Cured composition // 2065469
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FIELD: construction materials industry; production of the plastic rods for reinforcement the concrete construction products.

SUBSTANCE: the invention is pertaining to the field of production of the construction materials, in particular, to manufacture of the plastic rods made out of the mineral fibers impregnated with the binding agent, which may be used as the reinforcement bars of the construction designation for reinforcement of the three-layered wall constructions, the monolithic concrete and precast structures, in the structural components of the buildings in the form of the separate rods, for reinforcement of the buildings and structures foundations grounds, etc. The technical result of the invention is the increased fire-resistance and heat resistance of the rod used for reinforcement of the concrete, simplification of the process of its manufacture at conservation of the rather high strength properties with the increased alkali resistance, reduction of the power inputs used for the binding agent due to the significant decrease of the temperature of the thermal treatment. The problem is being solved due to the fact that the rod made out of the fibrous roving impregnated with the binding agent. In capacity of the binding agent it has the hybrid binding agent containing polyisocyanate adhesive and sodium liquid glass with the modulus of 2-5. At that the curing is exercised by the step-by-step temperature mode: 1 stage: 65-80°C, 2 stage: 90-100°C, by pulling the fibrous roving impregnated with the binding agent through the chamber of the polymerization. At that the ratio of the fibrous roving and the binding agent is 65-85:15-35 mass % accordingly.

EFFECT: the invention ensures the increased fire-resistance and heat resistance of the rod used for reinforcement of the concrete, simplification of the process of the rod manufacture at conservation of the rather high strength properties with the increased alkali resistance; reduction of the power inputs used for the binding agent due to the significant decrease of the temperature of the thermal treatment.

2 tbl

FIELD: manufacture of building materials on base of polymer compositions; structural material for heat-insulated plates of poly-functional purpose, wall panels for example.

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EFFECT: enhanced efficiency.

1 tbl, 9 ex

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