SU1797602A3 - Composition for dulling glass - Google Patents

Description

The invention relates to the glass industry and relates to compositions that make it possible to create a decorative effect on the surface of glass and glass products, in particular a matte surface.

The invention can be used to obtain a matte surface of glass and glassware in the building materials industry, architecture in the decoration of buildings, as well as for other national economic purposes, for example, for obtaining light-scattering shades, in medicine - for milk glass, etc.

Known composition (1) for modifying glass, including May. % :.

Hydrochloric acid 10-15

Ammonium bifluoride-fluoride 40-60

10-20 Rest

Sodium fluorosilicate Water

This composition is used for the manufacture of surfaces, but its disadvantage is that it is toxic.

The closest to the proposed composition is composition (2) for glass matting, including, wt%:

Hydrogen fluoride 40-45 Ammonium fluoride fluoride 10-15 Sodium fluoride 10-15 Trichloroacetic acid lot 2-8 Lithium phosphate 6-10 Water 20-30-

The disadvantages of the above composition are, firstly, the toxicity due to the content of fluorine compounds, the presence of which adversely affects the environment and humans, causing various metabolic disorders: secondly, the content of deficient, expensive fluorine compounds.

SU 1797602 AZ

The aim of the invention is to reduce the toxicity and cost of the composition.

This goal is achieved by the fact that lithium chloride, sulfate and nitrate are used as a matting agent in the matting composition containing lithium phosphate, fluorine-containing compounds and water, with the following ratio of components, wt%:

Aqueous saturated solution 10

IJCI: Ll ₂ SO ^: LiNO3

1: 1: 160-72

Aqueous saturated solution kCi: K2SO4: KNO3

1: 1: 120-28

Isopropyl alcohol 8-12

Comparative analysis with the prototype shows that the claimed composition is different: firstly, lower cost. According to the price list No. 0511-45, part 1. Wholesale prices for chemical reagents and drugs, the approximate cost of the claimed composition will be about 26 rubles per 1 liter of matting solution, 25 which is 1.6 times cheaper than the cost of the prototype composition; secondly, the claimed composition is non-toxic, since the replacement of toxic fluorine-containing compounds with non-toxic components, 30 such as chlorides, sulfates and nitrates of lithium and potassium. Unlike fluorine-containing compounds, the above-listed lithium and potassium salts do not affect a living organism and do not cause various disorders. 35

The combination of chlorides, sulfates, lithium and potassium nitrates, isopropyl alcohol and water as a matting composition is unknown from the literature, therefore the presented technical solution meets the 40 criteria of the invention Novelty. ...

Analysis of patent and scientific and technical literature did not reveal technical solutions containing features that distinguish this invention from the 45th prototype. This allows us to conclude that the proposed technical solution. meets the criterion Significant differences.

^'50

The matting solution is prepared by mixing in a 3: 1 ratio of the first solution, which is a mixture of chloride, sulfate, lithium nitrate in the ratio LiCI: Ll2SO4: UNO3 = 1: 1: 1 with the second 55 solution, which is a mixture of chloride, sulfate and potassium nitrate, at the following ratio KCI: K ₂ SO4: KNO3 = = 1: 1: 1, followed by the addition of isopropyl alcohol. _

Table 1 shows the compositions of the proposed matting solutions.

Table 2 and tab. 3 shows the characteristics of the properties of the compositions of the claimed and prototype.

The results presented in a comparative table, 3 of the composition of the proposed and known show that the proposed composition for processing the surface of glass allows you to obtain a uniformly matted surface and while the light transmission was higher than the known method.

The composition is prepared and applied to the glass surface as follows: the first solution P1 is prepared, which is a mixture of lithium chloride, sulfate, nitrate, representing the following ratio LICI: Ll2SO4: LINO3 = 1: 1: 1. and a solution of the second P2 is prepared, representing a mixture of chloride, sulfate, potassium nitrate in the following ratio KC1: K23O4: K ^ Oz = 1: 1: 1, after which a third solution is prepared from the first P1 and the second P2, mixing them in the ratio P1: P2 = 3: 1. The prepared solution is taken in an amount of 80 to 98% and the volume is brought up to 100% by mixing with isopropyl alcohol. The resulting solution is used to treat the glass surface. : '

Glass samples are pre-prepared before processing. To do this, their surface is washed with hot water, and in case of severe pollution - with a weak solution of hydrochloric acid, then thoroughly washed with water. The washed and dried surface is degreased with ethyl alcohol. The prepared glasses are placed in an oven, where they are heated to 85-120 ° C (and in industrial conditions after molding) and the prepared solution is applied at the above temperature until a uniform, dense coating of salts is obtained on the glass surface. After that, the samples are heated and kept at a temperature of 300 ° C for 30 minutes. After cooling to room temperature, the samples are washed with water to remove excess ools.

Example 1. Prepare a solution for processing glass of the following composition, wt%:

UCI: LI ₂ SO4: LINO360

KCI: K ₂ SO4: KNO328

Isopropyl alcohol 12

Samples of glasses with a pre-cleaned and degreased surface are placed in the oven, heated to 90 ° C, where they are kept for 2 minutes. After that, at the indicated temperature, using the aero

1797602 6 ash spraying the prepared solution is applied until a uniform, dense coating of salts is obtained on the glass surface. Then the samples are heated and kept in an oven at a temperature of 300 ° C for 30 minutes. The samples cooled to room temperature are washed with water to remove excess salts.

Claims (3)

Claim Composition for glass matting, including an aqueous solution of lithium salt and water, characterized in that, in order to reduce the toxicity and cost of the composition, as a lithium salt, it contains a mixture of aqueous saturated solutions of lithium chloride, sulfate and nitrate and additionally a mixture of aqueous saturated solutions of chloride, potassium sulfate and nitrate and isopropyl alcohol in the following ratio of components, wt%: Aqueous saturated solution LICI: L12S04: LINO3 10 1: 1: 160-72 Aqueous saturated solution KCI: K ₂ SO4: kNO ₃ . 1: 1: 1 20-28 15 Isopropyl alcohol 8-12. Table! Composition number Content of components, wt. % LICI: U2SO4: LINO3 KCI: K2SO4: KNO3 isopropyl alcohol 1 ' 60 28 12 '2 68 22 ten 3 72 twenty eight 20 Table 2 Composition No. Characteristics of the obtained glasses light transmission,% glass surface finish 1 35 There is a uniform matte finish. 2 38 surface 3 ' 40 The same p / p The composition of the solution. % '. ... ft Glass characteristic light transmission,% quality of production 1 Known Observed ma- HF 40-45 72-88 tied posed NH4F HF 10-15 surface NaF 10-15 CCI3COOH 2-8 LI3PO4 6-10 H2O 20-30 2 The proposed LICI: UNO3: LI2SO4 60-72 35-40 It is given KCI: KNO3: K2SO4 20-28 evenly ma-isopropyl alcohol 8-12 tied posed