SU1416500A1 - Titanium dioxide-base composition for producing lemon-color pigment - Google Patents

Description

(21) 4091460 / 23-26

(22) 20.05a86

(46) 08/15/88. Bul No. 30

(71) Leningrad nazhno-production association Pigment

(72) R.G.Gergaulova, T.N.Kabanova, L.N. Vasilyev, K.N.Gorbunova

and V.G.Ivanov

(53) 667 „622„ P8 „22 (088.8)

(56) Japanese Patent No. 21Ш1, cl. 24 A 4, 1964.

USSR Author's Certificate No. 385988, class, C 09 C 1/36, 1969.

(54) COMPOSITION FOR PRODUCING LEMON COLOR BASED ON TITANIUM DIOXIDE

(57) The invention relates to compositions for the production of non-toxic inorganic pigments and can be used in the production of enamels for dyeing plastic and ceramic products. Composition To obtain a titanium dioxide-based, lemon-colored pigment includes a nickel-containing compound, antimony trioxide and

additionally, an alkali or alkaline-earth metal oxide or hydroxide and carbamide in the following ratio of components, wt.%: nickel-co-holding compound (in terms of NiO) 3-25i antimony trioxide 9-28; alkali or alkaline earth metal oxide or hydroxide 1-20; carbamide 0.5-5, titanium dioxide in the form of anatase, rutile or hydrated else Hydroxide or alkali hydroxide or alkaline earth metal and carbamide are taken in proportional (1-5): 1, the mixture of the indicated composition is subjected to heat treatment 900-1300 With 1-3 hours, crushed and dried. The pigment obtained from the composition has a durability of 107,134 ÅNo units, improved light resistance by 1.5–2 times and heat resistance in the temperature range of 900–1300 ° C, and a lime-yellow color, the shades of which vary depending on Ratio of “sheni components, 2 ZP. f-ly, 1 tab.

with IR

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H3o6peTefrne relates to compositions for the preparation of non-toxic inorganic pigments and can be used in the manufacture of enamels for dyeing plastics and ceramics.

The aim of the invention is to improve the durability, lightfastness and color expansion of lemon pimento.

Example. 50% of anatase titania, 21% of nickel carbonate (in terms of NiO) and 25% of antimony trioxide are mixed with a small amount of water, a pre-prepared mixture of 3% potassium hydroxide and 1% carbamide is added (by weight of the total mixture) and again stirred. The paste is dried and subjected to heat treatment at 900 C for 3 h, crushed and dried. The resulting pigment is stable up to 900 ° C and has a dye capacity of 130 rel. Units, a light resistance of 0.6%,

The table presents the compositions and comparative characteristics of pigments obtained from these compositions.

The pigments obtained from the proposed composition have a coloring ability at the level of 107-134 relative units, improved light resistance by 1.5–2 times, and heat resistance in the temperature range of 900–1300 ° C.

The introduction of carbamide with an oxide or hydroxide of an alkaline or alkaline-earth metal helps to obtain an optimal aggregative state of the product (prevents the sintering process, pigment stiffness) and the phase compound, resulting in an improved mole ratio; о - technical properties (light resistance, m layer capacity), color characteristics and color gamma expansion.1 by varying the ratio of the components of the composition

Claims (3)

1. The composition for obtaining lemon-colored pigment based on titanium dioxide, including the nickel-containing compound and antimony trioxide, is only because in order to improve the color fastness and color expansion, it additionally contains an oxide or alkali or alkaline hydroxide ground metal and urea when the content of components, wt.%: Nickel-containing compound in terms of NiO 3-25 Trioxide antimony9-28 Alkali or alkaline earth metal oxide or hydroxide1-20 Urea 0, Titanium dioxide Else 2. The composition according to claim 2, that is, it contains wild titanium in the form of anatase, rutile or hydrated, 3. The composition according to claim, 1, characterized in that it contains an oxide OR hydroxide p p-decorative or alkaline-earth metal and urea in the ratio (1-5): 1.