PL97166B1 - METHOD OF PRODUCING COLOR GLOSSY COATINGS ON CERAMIC MATERIALS - Google Patents

Description

The subject of the invention is a method of producing glossy colored coatings on ceramic materials, especially those with high smoothness. These coatings are used especially in the production of precious, unique, exhibition ceramics, which require high aesthetic values. There is a known method of producing a colored coating of egg white. The preparation and application of such coatings is described in the book: J. Hoplinski: Paints and paint binders, 1959, especially in relation to coatings used to fix drawings or to preserve paintings. One of the methods described is to prepare an egg white coating by breaking the fresh protein into foam, threading it through blotting paper, threading it thinly on the glass to dry at room temperature, and then thinning the water with the addition of paints. The coating is applied to the surface by coating or dotting, or other methods, and fixed by drying at ambient temperature. Entry No. P-183254 entitled: "Method of producing a glossy coating in black or brown on ceramic, porcelain or stoneware" of the announced date On July 7, 1976, BUP No. 19/76 describes a method whereby the blood of an animal with previously broken down protein and without plasma is used for the coating, and the coating is burned out at a temperature of 320 ° C to 440 ° C for the time 10 to 30 minutes The resulting coating has a color from brown to black, depending on the color of the substrate and has properties similar to overglaze paints, and is highly glossy. Entry No. P-183256 entitled: "Method for the production of ceramic coatings", announced on 7 July 1976 BUP No. 19/76 discloses a method in which a suspension of colloidal clays is prepared with a composition by weight of 2.0 wt. to 3/0 wt.% % of dried fused bentonite from 0 to 4.2 wt. % water glass, from 0 to 2.0 wt. of potassium soap and from 40 wt. up to 50 wt.% animal blood with a previously broken protein and supplemented with distilled water up to 100% by weight, and then it is applied by one of the known methods to a previously fired ceramic surface, then dried and finally fired at a temperature from 320 ° C to 440 ° C, in an atmosphere oxidizing for 10 minutes to 40 minutes. 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In this example, the same procedure is followed as in the first example, but using • Cr203 chromium oxide. Other ingredients and selection The resulting coating is glossy, strongly sintered and has a green color. Example IV. In this example, the procedure is the same as in the first example, but additionally the aluminum ocher is burned at a temperature of 850 ° C. The composition used is as follows: Protein dry - 2.0 g Oilseed - 0.9 g Potassium soap - 0.1 g Urea - 0.2 g Iron oxide Fe2 O3 - 0.1 g Roasted ocher clay - 0.1 g Distilled water - 6.6 g The resulting coating is glossy, strongly sintered and has a red color. Example V. In this example, the same procedure is used j as in the first example, but ferric oxide Fo304 is used and additionally added ocher clay, roasted at a temperature of up to 1200 ° C. In addition, the composition is the same as in example 4, and the amounts of substances are used correspondingly. The coating thus obtained is black. PL

Claims (5)

Claims 1. A method of producing glossy colored coatings on ceramics, in which the protein of animal eggs is first foamed and then filtered, dried and dissolved in water, characterized in that oil, potassium soap, urea are added to the water-protein solution and metal oxide, where from 14 wt% to 24 wt% are used. % dry protein, from 7.2 wt. up to 11 wt.% % of oil, up to 1.4 wt. potassium soap, up to 2.6 wt.% % urea and up to 4.0 wt. of metal oxide, and water is added to make up to 100% by weight, then this mixture covers the surfaces of the ceramic material by known methods, and then burns at a temperature of 300 ° C to 380 ° C, in an oxidizing atmosphere for a time from 25 to 40 minutes. 2. The method according to claim The method of claim 1, wherein the metal oxide is ferric oxide of the formula Fe2O3, and the firing temperature does not exceed 330 ° C. 3. The method according to p. The process of claim 1, wherein the metal oxide is ferric oxide Fe304. 4. The method according to p. The process of claim 1, wherein the metal oxide is Cr 2 O 3, and the firing temperature does not exceed 330 ° C. 5. A method of producing glossy colored coatings on ceramics, in which the protein of animal eggs is first foamed and then filtered, dried and dissolved in water, characterized by adding oil, potassium soap, urea, oxides to the water-protein solution iron and aluminum ocher, previously fired, whereby 14 wt. up to 24 wt.% % dry protein, from 7.2 wt. up to 11 wt.% % of oil, up to 1.4 wt. potassium soap, up to 2.4 wt.% % urea, up to 2 wt. % of iron oxides and up to 2 wt. roasted clay, and water is added to make up to 100% by weight, then this mixture covers the surface of the ceramic material by known methods, and then burns at a temperature of 300 ° C to 380 ° C, in an oxidizing atmosphere for a time from 25 to 40 minutes. PL