COLORED AND WATERPROOFED STONE USING NATURAL RAW MATERIAL, DYE SOLUTION AND WATERPROOFING

Colored and waterproofed stone using natural raw material, wherein are used pigments to impart color to the stone, plant oils to dilute the pigments and fix the color, and plant resins to waterproof the stone permanently. The pigment comprises a mineral pigment, plant pigment or chemical pigment, preferably a synthetic organic chemical pigment. The plant oils and plant resins are preferably obtained from castor, rapeseed, hemp, linseed, poppy, sesame, soybean, sunflower, palm and cotton. The invention further relates to a waterproofing comprising a plant resin obtained from a plant oil and to a dye solution comprising a mixture of plant oils, plant resins and natural pigments.

DETAILED DESCRIPTION OF THE INVENTION

By coloring the stones according to the invention the mineral blue pigment preferably comprises ultramarine blue extracted from lapis lazuli. Another mineral pigment is the yellow ocher pigment extracted from clay. With regard to the plant pigments, the red pigment is obtained, preferably from urucum and the green pigment, preferably, from the chlorophyll of reforestation plants. With respect to the organic synthetic chemical pigments, they are preferably based on amine benzene better known as anilines. The plant and mineral pigments, as well as the organic synthetic chemical pigments, have high resistance to light and are diluted in plant oils mixed with plant resins.

From the natural pigments of the basic colors (blue, yellow, red and green), and synthetic organic chemical pigments, dissolved in plant oils and plant resins, which are extracted from plants and trees and have features of capturing, reflecting, propagating and leading the light, are obtained transparent, phosphorescent, luminous and reflective pigments of the basic colors, through which it is possible to obtain the full spectrum of colors by varying proportions and formulations.

The transparent pigments do not mask the crystalline appearance of the stones, and preserve their visual effects, such as texture, veins and nuances, giving more depth and dimension to coloring. The luminous and reflective pigments involve the stone crystals and reflect light, which is conducted by the plant resin by the same principle of the optical fiber, filling the spaces between the crystals and making the stones translucent, acquiring features of transparency. The phosphorescent pigments after exposure to sunlight, capture, absorb and store light and remain emitting light in the darkness, clearing the environment and allowing power saving during the night

The range of colors used for coloring the stones according to the invention is endless, making even possible to produce customized colors.

Plant oils used to dilute the pigment, and plant resins used for waterproofing the stone also work as fixers and stabilizers of color, and provide a high gloss finish. He plan oils are obtained from plants such as, for example, castor, rapeseed, hemp, linseed, poppy, sesame, soybean, sunflower, palm and cotton. These oils and resins are processed with performance additives such as ethanol and methanol, which are extracted, for example, from sugar cane and serve to increase the solvency power and penetration. The performance additives can be quantitatively increased or reduced, giving, respectively, the hardness and flexibility of the product to be obtained. The resins obtained from plant oils as well as the performance additives, are environmentally friendly, since they are easy to recycle and derived from renewable natural resources.

The mixture of oils, plant resins and pigments completely seals the pores, making the stone according to the invention, hydro oil-repellent, and oil stain-proof, thereby preventing the absorption of liquids, oils, and dirt. With pores completely sealed there is no formation of bacteria, fungi, molds or mites, providing the antibacterial effect to the stone, making it ideal for use in kitchens, restaurants and places requiring sterilization or complete hygiene, as in dental offices and hospitals. The waterproofing for sealing the stone plant comprises a resin obtained from a plant oil.

The pigments diluted in oil added to plant resins, have great penetrating power and enable coloring and waterproofing thickness ranging from 1 cm (one centimeter) up to 20 cm (twenty feet) in high compactness stones, such as granite, calcite and quartzite, involving the deepest crystals of the stone, penetrating into its core and filling the spaces between the crystals. With this, the stone becomes even more compact, more durable and waterproof, which improves their physical and mechanical strength, such as abrasion resistance, bending resistance and tensile strength.

As already mentioned, the materials that color and waterproof the stone according to the invention do not harm the stone, making possible its application in polished pieces, without affecting the brightness, enabling not only the coloring of plates, but also the color of decoration parts as benches, tables, tiles.

The colored stones according to the invention is ecologically correct, since it does not harm the environment, since the pigments are diluted in the plant oil and mixed with plant resins that are biodegradable. In addition, the coloring of the stones preserves the nature, as it prevents the extraction of rare stones, and make possible to reproduce them using white marble, crystallized, calcites and granites, which are materials abundant in nature.

The stones according to the invention, due to the high penetration power and involvement of large and small crystals, color fixing and catalyzing of the dye solution, can still reproduce the colors and characteristics of gems and semi-precious stones, increasing its compactness and strength, and allowing the cutting and finishing of pieces up to 3.50 m long by 2.50 m wide.

The plates or pieces made from the stones according to the invention can receive the dye solution even after being already polished, without damaging the polishing and can be worked in its thickness forming frames, fillets or any other finish, since the coloring of the stone extends throughout its thickness. This characteristic enables the re-polishing and polishing over time, remaining the stone fully colored, waterproofed antibacterial without the need of reapplication of the material nor maintenance.

Besides the advantages already mentioned, the stones according to the invention also enable the production of three-dimensional works of art with depth in the total thickness of up to 5 cm in marble, granite, quartzite calcite, with possible further demarcation regions for each color producing multicolored plates or decorative pieces with specific colors or designs and stylized as landscapes, for example. The invention also allows creating in the stone veins of other colors with pigments that are separated during catalyzing. It is also possible to customize colored designs like emblems or trademarks of companies.

In addition to the embodiments presented above, the same inventive concept can be applied to other alternatives or possibilities of use of the invention. Accordingly, the present invention should be interpreted broadly, and its scope determined by the terms of the appended claims.