RU2054019C1 - Yellow-green luster ceremic paint - Google Patents

Abstract

FIELD: decoration of porcelain-faience ware. SUBSTANCE: the yellow-green luster paint comprises (%):10-12.0 bismuth resinate; 27- 31 cobalt resinate; 10-15 titanium resinate; 0.2-1.5 bornoisoamyl ether; and an organic solvent, the balance (a 1:1 mixture of nitrobenzene and turpentine). The bismuth, cobalt and titanium resinates are mixed in the form of solutions in a solvent mixture (turpentine and nitrobenzene in a 1:1 ratio), and bornoisoamyl ether is added. The properties are as follows: the paint has improved luster and a dominating wave length of 561 nm, i.e. the color corresponds to the yellow green spectrum region. Color characteristics of the paint are stable and reproducible. EFFECT: improved properties of the title paint. 2 tbl

Description

 The invention relates to compositions of ceramic chandelier paints, in particular to overglaze paints that give an iridescent, rainbow effect after firing and are intended for decorating porcelain and faience products.

Known ceramic luster paint [1] containing the resinates of bismuth and cobalt, an organic solvent consisting of the following components, wt. Bismuth rubber 5.5-8.3 Cobalt rubber 8.8-11.4 Titanium rubber 3.1-6.3 Chromate rubber 14.8-20.8 Turpentine 27.3-50.1 Nitrobenzene 16.9-24 , 1 Chloroform 0.8-1.8
However, the color of the known paint is shifted to the green region of the spectrum.

The organic component of the known paint, fading during firing, is 96.7%
Closest to the invention is a ceramic yellow-green chandelier paint containing bismuth and cobalt resinates and an organic solvent turpentine and nitrobenzene in a mass ratio of 1: 1 [2]
However, the color of the known paint is shifted to the yellow region of the spectrum.

 The objective of the invention is to expand the color scheme of the decor by creating a ceramic chandelier paint with stable and individual color characteristics.

This is achieved by the fact that the ceramic yellow-green chandelier paint containing bismuth and cobalt resinates, the organic solvent turpentine and nitrobenzene in a mass ratio of 1: 1, additionally contains titanium resinate and boron isoamyl ether in the following ratio of components, wt. Bismuth rubber 10-12.5 Cobalt rubber 27-31 Titanium rubber 10-15 Boronisoamyl ether 0.2-1.5
Organic solvent rest.

For the preparation of luster ceramic paint, which is a mixture resinates bismuth, cobalt, titanium and boron ester is prepared each separately resinate by the following procedure: into the molten rosin at 170-190 ^{° C} in small portions introduced a corresponding amount of a salt of one of these metals, based on the formulation based on the dry residue, the temperature was raised to 15-20 ^{° C} and heated until the reaction. A mixture of solvents, for example, turpentine with nitrobenzene in equal amounts, is introduced into the prepared resinate and left to cool and stand for 24 hours. After this, the solution is filtered through a sieve with 10,000 holes / cm ² , and left to stand for 15 days. and drained by decantation.

 As an organic compound, boron isoamyl ether is used.

 To obtain ceramic luster paint, these organic compounds are mixed in a selected ratio.

 The invention is illustrated by specific examples 1-5 of table 1.

The conditions for fixing the paint on the substrate are as follows:
the proposed ceramic chandelier paint is applied to glazed porcelain and faience products and dried for 30-35 minutes under normal conditions, then fired (in a muffle furnace) at 760-830 ^о С with exposure at a maximum temperature of 5-10 minutes. Table 2 presents the data on the properties.

блеск
Δ E, цветовое различие, ед. CIELAB
Н цветовой тон
Из данных табл. 2 при расчете по формуле ΔE=

(1), следует, что цветовое различие Е_о краски по примерам 1-3 составляет ≈ 0,25 ед. CIELAB, т.е. она визуально неразличима. Поскольку Δ Е_о небольшая величина, возьмем за базу для дальнейших расчетов колористические характеристики предлагаемой краски (пк) по примеру 2. Тогда, из данных табл.2 следует, что цветовое различие между предлагаемой краской и краской по ТУ, Δ Е_пк-ту 14,1, что удовлетворяет условиям задачи изобретения (Δ Е≥ 1,5 ед. CIELAB). Цветовое различие между предлагаемой краской и красками с составами, лежащими за пределами концентраций компонентов, указанных в формуле изобретения (примеры 4 и 5), соответственно равны Δ Е_пк-4 14,1 ед. Δ Е_пк-5 6,6 ед. CIELAB.The legend in table 2 is as follows:
L
A coloristic characteristics
IN
P, color purity
λ _D , nm color
S saturation
IN

shine
Δ E, color difference, units Cielab
H color tone
From the data table. 2 when calculated by the formula ΔE =

(1), it follows that the color difference E _{about the} paint in examples 1-3 is ≈ 0.25 units. CIELAB, i.e. it is visually indistinguishable. Since Δ E _{о is} small, we take as a basis for further calculations the color characteristics of the proposed paint (pc) according to example 2. Then, from the data in Table 2 it follows that the color difference between the proposed paint and paint according to TU, Δ E _pc-tu 14 , 1, which satisfies the conditions of the task of the invention (Δ E≥ 1.5 units of CIELAB). The color difference between the proposed paint and paints with compositions lying outside the concentrations of the components specified in the claims (examples 4 and 5), respectively, are Δ E _{pc-4 of} 14.1 units. Δ E _pc-5 6.6 units CIELAB.

 The color difference between the prototype paint according to TU and the paint according to example 4 is 0.25 units. those. these paints are visually indistinguishable, which does not satisfy the condition of the task of the invention, since it does not provide the desired shade.

Although the color difference between the paint according to example 2 and the prototype paint is large and is Δ E _{5 that} 5.5 units. which corresponds to the conditions of the task of the invention, the color difference between the paint according to example 5 and the proposed paint is also large and is Δ E _{pc-5 of} 6.6 units. which also does not provide the desired shade.

=

(2).The luster of the chandelier paint according to examples 1-5 and TU is defined as the ratio of the reflection coefficient with a mirror component, R ₃ to the reflection coefficient without a mirror component, R _S with a dominant wavelength λ _D according to formula B

=

(2).

 For the chandelier prototype paint according to TU and the proposed paint, the gloss is equal to 1.4 and 1.5, respectively, that is, the proposed paint has a high gloss.

 The data table. 2 indicate that the proposed chandelier paint has a dominant wavelength of 561 nm, i.e. its color corresponds to the yellow-green region of the spectrum (IOC color chart, 1931).

 The color tone N of the proposed paint is equal to 136.8 for examples 1-3. Purity P and color saturation S satisfy the décor requirements.

 The color characteristics of the proposed paint are stable and reproducible in the range of concentrations of the components specified in the claims.

 Thus, the proposed chandelier paint has a color difference with the prototype paint Δ E> 1.5 units. which provides a given shade with a shift to the yellow region of the spectrum, stable and individual coloristic characteristics, as well as an increase in gloss.

Claims (1)

CERAMIC CHANDELIER COLOR OF YELLOW-GREEN COLOR, containing bismuth and cobalt resinates, an organic solvent - turpentine and nitrobenzene in a mass ratio of 1: 1, characterized in that it additionally contains titanium resinate and boronisoamyl ether in the following ratio of components, wt.%:
Bismuth rubber - 10 - 12.5
Cobalt rubber - 27 - 31
Titanium Rubber - 10 - 15
Boronisoamyl ether - 0.2 - 1.5
Organic Solvent - Else

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