| Start of section
Production, amateur Radio amateurs Aircraft model, rocket-model Useful, entertaining |
Stealth Master
Electronics Physics Technologies Inventions |
Secrets of the cosmos
Secrets of the Earth Secrets of the Ocean Tricks Map of section |
  |
| Use of the site materials is allowed subject to the link (for websites - hyperlinks) | |||
Navigation: => |
Home / Patent catalog / Catalog section / Back / |
|
INVENTION
Patent of the Russian Federation RU2238919
COMPOSITION FOR GLASS TREATMENT FOR OBTAINING A DECORATIVE EFFECT
IN THE MATTAGE OF THE MATTLE PATTERN
The name of the inventor: Anatoly Anatolievich Sidelnikov (RU); Svistunov Dmitry Vladimirovich (RU); Sidelnikova Olga N. (RU)
The name of the patent holder: Sidelnikov Anatoly Anatolyevich (RU); Svistunov Dmitry Vladimirovich (RU); Sidelnikova Olga N. (RU)
Address for correspondence: 630008, Novosibirsk-8, ul. Moscow, 163, kv.195, O.N. Sidelnikova
The effective date of the patent: 2002.12.30
The invention relates to a technology for processing glass and articles thereof to produce a decorative effect in the form of a matte pattern. The matting paste, including barium fluoride, barium sulfate and water, additionally contains potassium nitrate, lithium nitrate and dimethylsulfoxide, with the following component ratio, g: barium sulphate 15-40 , potassium nitrate 5-40 , lithium nitrate 5-20 , barium fluoride 2-30 , dimethylsulfoxide 5-30 , water 1-15 . Pasta for matting allows to receive a decorative effect in the form of a matte pattern of various densities on any glass surfaces, including on finished glass products of complex configuration.
DESCRIPTION OF THE INVENTION
(EN) The invention relates to a technology for processing glass and finished glass products to produce a decorative effect in the form of a matte pattern.
A number of compositions for producing a matt glass surface are known.
For example, a composition is known for glass matting, including hydrochloric acid, hydrofluoric acid-ammonium bifluoride-fluoride, sodium fluorosilicate, and water ( USSR Authorship No. 1477707, C 03 C 15/00, 1989 ).
The disadvantage of this composition is its toxicity, due to the content of fluorine compounds that release hydrofluoric acid in the process of obtaining a matted surface.
An etchant composition is known comprising an alkali metal salt melt containing a monovalent or divalent cation nitrate or sulfate. The hydroxide, carbonate or bicarbonate of a monovalent or divalent cation is added to the salt melt. As a result of etching, a microroughness is formed on the glass surface ( Japanese application No. 2917480, C 03 C 15/00, 2000 ).
The disadvantage of this melt is the complexity of the technology and the harsh conditions for working with salt melts.
A composition for glass matting is known , which includes an aqueous solution of lithium and potassium salts. As a composition, a mixture of aqueous saturated solutions of chloride, sulfate and lithium nitrate is used, a mixture of aqueous saturated solutions of chloride, sulfate and potassium nitrate and isopropyl alcohol ( USSR patent No. 1797602, C 03 C 15/00, 1993 ).
The disadvantage of this solution is the unsuitable use of it for applying a matted pattern on the glass surface and especially on the finished glass product.
All described compositions for matting glass surfaces allow to create uniform monophonic matte surfaces on the glass, but do not allow to receive a decorative effect in the form of a matte pattern, especially on the finished product of a complex configuration.
An etching paste , including barium sulfate, is known and allows, in principle, to obtain a matted pattern on a glass surface ( USSR Authorship No. 948926, C 03 C 15/00, 1982 ). The paste contains both ammonium fluoride, hydrofluoric acid, sulfuric acid and sodium acetate.
The drawback of the paste is its toxicity, The paste contains hydrofluoric acid, which adversely affects the environment and man.
The closest to the claimed - the prototype - is a paste for matting, which includes metal fluoride, barium sulfate and water. The fluoride of the metal is potassium fluoride. ( M. Vacek, V. Kupf, Chemical Treatment of Glass, Moscow: Light Industry, 1974, pp. 75-77 ).
The disadvantage of this pasta is the complexity of its preparation. In addition, the rough surface resulting from the matting of this paste is covered with hard-to-remove contaminants.
The object of the invention is to provide a non-toxic paste for matting, which, when applied, makes it possible to improve the quality of the matted surface.
The object of the present invention is achieved by using barium fluoride as the metal fluoride, and the paste additionally contains potassium nitrate, lithium nitrate, and dimethylsulfoxide in the maturing paste comprising metal fluoride, barium sulphate and water, with the following component ratio, g:
- Barium sulphate 15-40
- Potassium nitrate 5-40
- Lithium nitrate 5-20
- Barium Fluoride 2-30
- Dimethyl sulfoxide 5-30
- Water 1-15
The matting paste is prepared by thoroughly mixing the above components.
The application of the matte pattern to the surface of the glass or to the finished article of glass is carried out as follows.
The glass surface is degreased and wiped dry. Then, a pattern pattern is placed on the surface to be treated, which limits the matting areas. The template is protected from the effects of the paste, except those areas that are to be matted. A layer of a paste of the above composition is then applied to matt the respective areas. After fixing the paste, the template is removed, and the glass product with the paste applied is placed in an oven where it is gently heated to a temperature of 250-350 ° C. The product is kept in the oven for 15 to 90 minutes . After cooling to room temperature, the product is washed with running water.
When using the paste of the claimed composition, the matting process occurs in the absence of hydrofluoric acid, which eliminates the toxicity of the paste for etching.
The high quality of the matted pattern on the glass surface or on the glass product is due to the fact that using the claimed paste, the glass structure in the subsurface layer is matted with a small disruption of the surface layer. Usually matted surfaces have a roughness of 5-10 μm . The penetration of the paste components into the subsurface layer occurs through microcracks on the surface layer. At the same time, the surface layer remains smooth and uneven to the touch on both sides of the article.
The claimed paste for matting allows to receive a decorative effect in the form of a matte pattern of various densities on any glass surfaces, including on the finished glass products of complex configuration.
CLAIM
A matifying paste comprising metal fluoride, barium sulfate and water, characterized in that barium fluoride is used as the metal fluoride and the paste additionally contains potassium nitrate, lithium nitrate and dimethylsulfoxide at the following component ratio, g :
- Barium sulphate 15-40
- Potassium nitrate 5-40
- Lithium nitrate 5-20
- Barium Fluoride 2-30
- Dimethyl sulfoxide 5-30
- Water 1-15
print version
Date of publication 11/21/2006
Comments
Commenting on, remember that the content and tone of your message can hurt the feelings of real people, show respect and tolerance to your interlocutors even if you do not share their opinion, your behavior in the conditions of freedom of expression and anonymity provided by the Internet, changes Not only virtual, but also the real world. All comments are hidden from the index, spam is controlled.