ES2382783A1 - Colored material, procedure for its obtaining and its uses (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Colored material, procedure for obtaining them and their uses. The present invention relates to a colored material comprising the components SiO2, Al2 O3, CaO, optionally with the TiO components2, MgO, Na2 O, K2 O or Fe2 O3 or a combination thereof, the amount of Fe2 O3 being always between 0 and 1%; and an acrylic based dye; to its obtaining process and to its use in sports courts, in particular tennis courts. (Machine-translation by Google Translate, not legally binding)

Description

Colored material, procedure for obtaining it and its uses

Field of the Invention

The present invention relates to a colored material, its process of obtaining and its use in sports courts, in particular tennis courts.

Background of the invention

The evolution of sport, specifically professional sport and particularly tennis, has been based fundamentally on three aspects: technique, physical preparation and the evolution of materials.

This development of the materials includes tennis courts that throughout history have modified some types of surfaces and that the International Tennis Federation (ITF) has been responsible for regulating and classifying surface types and speed characteristics of game based on ratings.

On the one hand the most frequent surface types in the professional tennis tournament circuit are:

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 Acrylic surface painted on concrete, asphalt or wood base (for example, in Australian Open, US Open, Miami, Indian Wells, Masters…)

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 natural grass surface (for example, in Wimbledon, Halle, Queens…)

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 clay surface (for example, in the tournaments of Roland Garros, Madrid, Monte-Carlo, Rome ...)

Other types of surfaces approved by the International Tennis Federation but not used in professional circuit tournaments are artificial turf, porous concrete or asphalt, clay membranes, linoleum, PVC, etc ...

On the other hand, the International Tennis Federation classifies the characterization of a pavement through the “Initial study of performance standards for pavements for tennis courts”. The coefficient of restitution (COR) or measure of the degree of conservation of kinetic energy that results from the collision between particles or measurement of the ball can. This parameter must be between 0.78 and 1 and is obtained through ITF CS 05/01.

The coefficient of friction (COF) or measure of the opposition to the movement offered by the surface of two bodies in contact or measure of the slip resistance. This parameter must be between 0.6 and 1.1 and is obtained through the ITF CS 02/01 test.

The track speed characterization coefficient (CPR) results from the combination of the return coefficient (COR) and the friction coefficient (COF) and is obtained through ITF CS 01/01. This parameter must be between 0 and 30 for slow tennis courts, between 30 and 45 for medium speed tennis courts and greater than 45 for fast tennis courts.

Since about forty years ago when television entered the scene more regularly the colors of acrylic surfaces were modified, initially it was played on green tracks with white balls, later it was passed to combinations of green and red colors to delimit the interior and outside the field, currently mostly played on blue courts and yellow balls. All this on acrylic surfaces is relatively simple because after all it is achieved with a track paint being the fundamental factor that the surface color tone does not undergo modification during the game.

On the other hand, the raw material of the clay has always been the brick and is obtained from crushing, sieving and sieving at appropriate particle size. The brick powder achieved has very specific characteristics, the main ones being the reddish color, the ability to maintain humidity, draining factor and high compaction capacity.

Historically the clay courts are present since almost the beginning of tennis and are part of most professional circuit tournaments mainly in Europe and South America.

The circuit of tournaments is celebrated in the five continents avoiding the winter, where maintenance is a constant on the clay tennis courts accentuated when it is part of a great event in which the best players in the world participate.

Before each game the track is prepared with a concrete maintenance and a superficial watering so that this moisture enhances the red color of the clay and the players can develop the game better, since the beginning of the game the drying of the track is constant losing the reddish color turning beige. With the advances of the technique, the physical preparation and of the materials especially the rackets, the game is developed at a very high speed being frequent the loss of the vision of the ball by the live spectator. With this BEIGE hue of the earth and the little contrast of the yellow color of the ball, the visual problem multiplies when the game is followed by television.

Therefore, it can be affirmed that the sports courts, usually present a surface color that in certain occasions due to the speed of the game and the color of the ball used do not allow the spectator to know where the ball is at any moment. Likewise, a better visual contrast of color, mainly on television, between the ball and the track allows a better follow-up of the game for the viewer as well as favoring the work for both the referees and the players themselves.

As indicated above, this is especially important in clay tennis courts where the speed of the game is high and decision making based on a ball canister a few millimeters beyond or more here is of vital importance.

Additionally, it may also be interesting to incorporate color on clay for commercial purposes by incorporating a clay of a corporate color.

Prior to the present application, colored products have been disclosed that attempt to overcome this visualization problem such as those described in Spanish patent publication ES2349524. This document describes a colored clay characterized by being composed of 80% clays with a maximum cooking temperature of 1200oC and 20% consisting of a mixture of water-based dye with a minimum water content of 60%.

However, said clay, in addition to presenting lumps, presents problems of loss of color in the washing and thermal cycles, which in the long term is a product that does not last and deteriorates.

The material of the present invention overcomes these drawbacks by obtaining a tinted material with good permeability, without loss of color when washed and in thermal cycles and the absence of lumps.

Summary Description of the Invention

A first object of the invention relates to a colored material comprising the components SiO2, Al2O3, CaO, and an acrylic based dye.

A second object of the invention relates to a surface composed of a colored material according to the first object of the invention. In particular said surface is a surface of a sports court,

A third object of the invention relates to a process for obtaining a colored material according to the first object of the invention.

A fourth aspect of the invention relates to the use of a colored material according to the first object of the invention to manufacture a colored surface.

Brief description of the figures

Figures 1A and 1B represent the colored material of the invention (Figure 1A) and the colored material of the invention after washing (1B)

Detailed description of the invention

The present invention relates, in a first aspect, to a colored material comprising:

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the SiO2, Al2O3, CaO components, optionally with the TiO2, MgO, Na2O, K2O or Fe2O3 components or a combination thereof, the amount of Fe2O3 always being between 0 and 1%; Y

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an acrylic based dye.

These oxidic components are usually used in a ceramic paste called majolica and are characterized by containing zero amounts of iron oxide or a maximum of 1%. Therefore, due to the little or no presence of iron oxides, the mixture of said oxides provides a white paste.

In another preferred embodiment, the acrylic base dye that is added to this paste formed by oxides is a low viscosity acrylic base dye formulated with permanent pigments, micronized and dispersed in water. In a particular embodiment said dye has the following characteristics:

COLORANT features

Chemical nature: Pb 15: 3 PW 6 PBK 7 PV 23

Physical state: blue liquid

Density: 1.08 g / cc

Viscosity: 375 cPs

Ph: 8.8

Soluble in water

Lightfastness (scale 1-8): 8

Weatherproofness (scale 1-5): 5

Product not dangerous for man (Reg CE 1,272 / 2008). No labeling required

Non-combustible product

Non-toxic product (Reg CE 67/548 / CE)

where:

5 PB15: 3 is Blue Pigment 15: 3 (copper phthalocyanine) PV23 is Violet Pigment 23 (dioxacin) PBK7 is Pigment Black 7 (carbon black) PW6 is Pigment White 6 (titanium dioxide)

10 Although the most preferred dye is blue, it should be noted that dyes can be added where the color obtained is not blue.

In a second aspect, the present invention relates to a surface composed of a colored material according to any of the embodiments indicated above for said colored material.

Preferably, said colored surface is of a sports court, in particular a tennis court, such as clay. Normally this colored surface is usually the top layer of the pavement, the last of the three layers that generally form the construction system of a clay court and determines the characteristics of the surface.

20 As is known, the general construction system of a clay court has a series of superimposed layers, from lower to upper, on level and compacted natural ground:

a) Extension, leveling and compaction of gravel and ceramic shells of granulometry between 30-40 mm thick,

25 forming a layer 25 cm thick. b) Extension, leveling and compaction of a mixture of different types of aggregates selected with granulometry between 2 and 10 mm and hydraulic lime, forming a 5 cm thick layer. c) Colored clay soil extension forming a 5 to 10 mm layer.

In a third aspect the invention relates to a process for obtaining a colored material according to any of the embodiments indicated above for the colored material, which comprises the steps of:

a) Prepare a composition consisting of 45-55% (by weight of the total added solids) of clay substance, 30-45% (by weight) of quartz (SiO2) and 10-30% (by weight) of carbonate of calcium (CaCO3), with the 35 quantities adjusted independently so that the total is always 100%; b) calcining between 900 and 1100 ° C the composition formed in step (a), preferably at 950 ° C in order to obtain a good balance between hardness and porosity, crushing and sieving at preferred granulometry; c) Dissolve the acrylic-based dye in water to a maximum of 50% by volume, preferably 35% by volume in water .;

D) Add the product obtained in (b) on the dye solution of (c) until said solution is saturated; e) Let stand until color saturation, normally at least 30 minutes; f) Dry the product obtained in (e) at a temperature equal to or greater than 110 ° C by stirring

keep going; g) Screening of the final product obtained, preferably by means of a mesh, to eliminate lumps.

The term "clay substance" is a term commonly used by a person skilled in the art to which the invention belongs and indicates a substance that can be "ball clay" (kaolin clay), kaolin, Alcañiz clay, and equivalents. , whose main composition is Al2O3-2SiO2 · 2H2O with possible impurities of TiO2, K2O, Na2O, Fe2O3.

In a preferred embodiment, the composition in step (a) is:

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 50% by weight of clay substance

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 30% by weight of SiO2

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 20% by weight of CaCO3

Step (e) is performed at said temperature equal to or greater than 110 ° C in order to ensure that all the water added throughout the process disappears. It is also important to continuously stir the product in the drying process so that the evaporation of the water is carried out in all directions and the dye is fixed equally on the entire surface of the grain.

The final product obtained has a particle size between 0.01 mm and 0.125 mm.

The final product obtained is presented in two types of granulometry to obtain a better response in the quality of the track according to the parameters of the “Initial study of performance standards for pavements of tennis courts of the International Tennis Federation”.

In the areas where the warm climate predominates, colored clay of granulometry between 0.01 mm and 1.25 mm is used.

According to a sieve granulometric analysis according to UNE 103-101, the general ranges are:

In a 0.08 mm sieve a 43 - 50% pass In a 0.16 mm sieve a 51 - 56% pass In a 0.40 mm sieve a 59 - 65% pass In a 0.63 mm sieve a 68 - 73% pass In 1.25 mm sieve passes 100%

In areas where rainy weather predominates, colored clay with granulometry between 0.01 mm and 2.00 mm is used.

According to a sieve granulometric analysis according to UNE 103-101, the general ranges are:

In a sieve of 0.08 mm passes 18 - 22% In a sieve of 0.16 mm passes 27 - 31% In a sieve of 0.40 mm passes a 37 - 42% In sieve of 0.63 mm passes a 48 - 53% In 1.25 mm sieve passes 85 - 90% In 2.00 mm sieve passes 100%

The test method is also applied to determine the bearing capacity of a soil based on its condition, density and humidity, as well as the overload applied (CBR Index (California Bearing Ratio) 5.1-6.1 according to UNE 103-502):

Dry density 1.01 - 1.50% Absorption 15.06 - 37.27% Swelling -0.08 - -0.52% Maximum density 1.04 - 1.52% Optimum humidity 6.50 - 16% Degree of Compaction 100% 6.1 - 31.8% Degree of Compaction 95% 5.1 - 23.9%

In a fourth aspect, the present invention relates to the use of a colored material, according to the embodiments described above, to manufacture a colored surface. Preferably, said colored surface is of a sports court, in particular a tennis court, such as clay.

The following are examples of preparation of the composition of the invention. In no case, the present examples are intended to limit the scope of the invention and are provided for illustrative purposes only.

EXAMPLE 1

500 kilos of “ball clay” are mixed with 300 kg of quartz and 200 kg of calcium carbonate in a tank of suitable dimensions. 400 liters of water are added to help mixing and stir until a paste is obtained.

Said paste is dried, by evaporation, until a manipulable mass is obtained to make plates of thickness and measurements determined by the volume of the ceramic oven to be used. Once the plates have dried, we proceed to bake and calcine at 950 ºC, then crush and sieve to the desired size (0 - 1.25 mm).

In a 1.5 m3 stainless steel tank 300 liters of water are deposited. Then, 150 liters of dye of the characteristics described in the description are added to the water, and it is removed for 10 minutes until a homogeneous solution is achieved. Then the previously calcined material is introduced until the calcined material has absorbed the solution. At this point it is allowed to stand long enough until the saturation of the color in the material is reached.

At this point the calcined-dye material mixture is extracted in manageable quantities (20-25 kg) and by means of a vane of breaker blades, to which temperature is applied through propane burners, the mixture is dried by movement and temperature constant of 120ºC.

Once the drying is finished, the resulting soil is screened with several meshes, the first one with 1.25 mm of light and the following, to a lesser extent, to obtain the desired particle size.

EXAMPLE 2

500 kilos of “ball clay” are mixed with 300 kg of quartz and 200 kg of calcium carbonate in a tank of suitable dimensions. 60 liters of water are added to moisten the materials and thus allow their adhesion. Said paste is introduced into molds, in the form of a tile to be baked, at a pressure of 50 tons. This pressure brings together the materials to give them consistency. Subsequently, these tiles are calcined at 1,100 ° C and crushed and sieved, once cooled, until the desired grain size is achieved, in this case 0-2.00 mm.

In a 1.5 m3 stainless steel tank 300 liters of water are deposited. Then, 150 liters of dye of the characteristics described in the description are added to the water, and it is removed for 10 minutes until a homogeneous solution is achieved. Then the previously calcined material is introduced until the calcined material has absorbed the solution. At this point it is allowed to stand long enough until the saturation of the color in the material is reached.

At this point the calcined-dye material mixture is extracted in manageable quantities (20-25 kg) and by means of a vane of breaker blades, to which temperature is applied through propane burners, the mixture is dried by movement and temperature constant of 120ºC.

Once the drying is finished, the resulting soil is screened with several meshes, the first one with 1.25 mm of light and the following, to a lesser extent, to obtain the desired particle size.

EXAMPLE 3

On a sample of material obtained according to example 1, the Instituto Técnico de Control, S.A. carried out the following determinations: fine content (%), particles of low specific gravity (%), bulk density (g / cm3), water absorption (%), alkali reactivity, permeability coefficient and color fixation . All tests with the exception of the permeability coefficient and color fixation were carried out according to the UNE-EN standards.

The results are indicated in Tables 1-3:

Table 1 Table 2

Table 3

Additionally, in figures 1A and 1B the color difference between the original sample and the washed sample is shown. As you can see the color intensity is practically the same.

Therefore, after the tests to which the colored material has been subjected it can be concluded that said material does not have lumps, has a good permeability, has a low percentage in fines, a medium water absorption and, more importantly, It does not lose color, neither in the washing nor in the thermal cycles.

Claims (9)

1.- Colored material comprising: 5

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the SiO2, Al2O3, CaO components, optionally with the TiO2, MgO, Na2O, K2O or Fe2O3 components or a combination thereof, the amount of Fe2O3 always being between 0 and 1%; Y

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an acrylic based dye.

2. Material according to claim 1 wherein the dye is a low viscosity acrylic base dye formulated with permanent pigments, micronized and dispersed in water. 3. Material according to any of claims 1 or 2, wherein the dye has the following characteristics:

Chemical nature: Pb 15: 3 PW 6 PBK 7 PV 23

Physical state: blue liquid

Density: 1.08 g / cc

Viscosity: 375 cPs

Ph: 8.8

Soluble in water

Lightfastness (scale 1-8): 8

Weatherproofness (scale 1-5): 5

Product not dangerous for man (Reg CE 1,272 / 2008). No labeling required

Non-combustible product

Non-toxic product (Reg CE 67/548 / CE)

15 where: PB15: 3 is Pigment Blue 15: 3 (copper phthalocyanine) PV23 is Pigment Violet 23 (dioxacin) 20 PBk7 is Pigment Black 7 (carbon black) PW6 is Pigment White 6 (titanium dioxide). 4. Composite surface of the material according to any of claims 1 to 3. 5. Surface according to claim 4 which is of a sports court. 6. Surface according to claim 5 wherein said sports court is a clay court. 7. Method for obtaining a colored material according to any of claims 1 to 3 which comprises the steps of: a) Prepare a composition consisting of 45-55% (by weight) of clay substance, 30-45% (by weight) of quartz and 10-30% (by weight) of calcium carbonate, with the amounts independently adjusted for the total is always 100%; 35 b) Calculate between 900 and 1100oC the composition formed in step (a), crush and sieve at granulometry preferred; c) Dissolve the acrylic base dye in water up to 50% by volume; d) Add the product obtained in (b) on the dye solution of (c) until said solution is saturated; e) Let stand until color saturation; 40 f) Dry the product obtained in (e) at a temperature equal to or greater than 110 ° C, stirring continuously; g) Screening of the final product obtained. 8. Method according to claim 7, wherein the composition calcined in step (a) has the composition: 50% by weight of clay substance, 30% by weight of quartz and 20% by weight of carbonate of calcium. 9. Process according to claim 7 or 8, wherein the amount of dye in step (c) is 35% by volume with respect to the dissolving water. 10. Method according to any of claims 8 to 10, in which the screening of steps (c) or (g) is carried out by means of a mesh. 11. Use of a colored material according to any of claims 1 to 3 to manufacture a surface colored. 12. Use according to claim 11, wherein said colored surface is of a sports court. 13.- Use according to claim 12, in said sports court is a clay court. Figures 1A and 1B  1A 1B SPANISH OFFICE OF THE PATENTS AND BRAND Application no .: 201230389 SPAIN Date of submission of the application: 14.03.2012 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: E01C13 / 06 (2006.01) RELEVANT DOCUMENTS

Category

56 Documents cited Claims Affected

TO

EN 2349524 A1 (INNOVATION AND TECHNOLOGICAL CONSULTING S L L) 04/01/2011, example 1, 1-13

TO

WPI DATABASE IN EPOQUE, AN 2012-C52013, JP2012036718 (AZUMAOU KK), 1-13

02/23/2012, summary

TO

WPI DATA BASE IN EPOQUE, 2003-473231, JP2003041151 (YOKOHAMA DANSEI 1-13

HOSO SYSTEM KK.), 02/13/2003, summary

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims • for claims no:

Date of realization of the report 30.05.2012

Examiner J. García Cernuda Gallardo Page 1/4

REPORT OF THE STATE OF THE TECHNIQUE Application number: 201230389 Minimum documentation sought (classification system followed by classification symbols) E01C Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENES, WPI, EPODOC, XPESP, TXTEP1, TXTGB1, TXTUS2, TXTUS3, TXTUS4 State of the Art Report Page 2/4  WRITTEN OPINION Application number: 201230389 Date of Completion of Written Opinion: 05.30.2012 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 1-13 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 1-13 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/4  WRITTEN OPINION Application number: 201230389  1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

EN 2349524 A1 (INNOVATION AND TECHNOLOGICAL CONSULTING S L L) 04.01.2011

D02

JP 2012036718 A 02/23/2012

D03

JP 2003041151 A (YOKOHAMA DANSEI HOSO SYSTEM KK et al.) 02.13.2003

 2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement The application refers to a colored material comprising SiO2, Al2O3, CaO and optionally the components TiO2, MgO, Na2O, K2O or Fe2O3 or a combination thereof, the amount of Fe2O3 always being between 0 and 1%, as well as a acrylic based dye (reiv. 1). The material meets certain values of properties such as chemical nature, physical state (blue liquid), Density (1.08 g / cm3), viscosity (375 cPs), pH (8.8), water soluble, light fastness, weatherproof, non-hazardous, non-combustible, non-toxic (reiv. 3). A surface of the material is provided (reiv. 4) which is a sports court (reiv. 5) and that said sports court is a clay court (reiv. 6). A process for preparing the composition (reiv. 7) by preparing the composition, calcining, dissolving, adding the product of section (b) on the dye solution of (c), letting it stand, drying and sieving. Also its use to manufacture a colored surface (reiv. 11), which is a sports court (reiv. 12) or a clay court (reiv. 13). Document D01 refers to a colored clay for sports use, in particular for clay tennis courts. Its composition includes 80% clays and 20% blue dye mixture (example 1, lines 40-45). The dye is not intended to be acrylic based, nor the inclusion of the components of the application. Document D02 refers to the manufacture of a tennis court forming a substrate containing asphalt or concrete. In its chemical composition the inclusion of colloidal silica solution, sodium aluminate solution and a coloring agent coating the outer surface of the track is mentioned. Document D03 refers to the manufacture of colored silica, with an amount of silica sand, polyurethane resin and layer forming material. In its use the artificial turf for tennis courts is indicated. The application is considered to meet the requirements of novelty and inventive activity in all its claims 1-13, according to art. 6.1 and 8.1 of the L.P. State of the Art Report Page 4/4