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Process for preparing iron blue with fantastic color effect

A preparation process, iron blue technology, applied in the direction of fibrous fillers, etc., can solve the problems of product quality impact, pigment final performance, etc., and achieve the effects of reducing production costs, convenient and easy operation of the process, and saving energy

Active Publication Date: 2011-09-14
杭州弗沃德精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to make white pulp first and age it. The length of the aging period and temperature have a great influence on the final performance of the pigment. If the white pulp is not uniform or the acidity is not adjusted properly or the oxidation is not complete, it will affect the quality of the product. have a greater impact

Method used

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  • Process for preparing iron blue with fantastic color effect
  • Process for preparing iron blue with fantastic color effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 30g of Ferward Symphony Interference Blue Pearlescent Pigment, put it into a reaction container, add 450mL of deionized water, stir and heat up to 30°C, and calculate the iron with a coating rate of 18-20% by weight on a transparent sheet-like substrate The amount of ferrocyanide salt solution and ferric salt solution required by the blue is pumped into the calculated amount of 0.24mol / L potassium ferrocyanide and 0.33mol / L ferric chloride in parallel with a constant flow pump Solution, the reactant turns blue immediately, the reaction material is added within 4~5h, and then the reaction is continued for 30min. Filter the suspension of the blue pigment, wash it with deionized water until there is no acid and salt, and dry it in an oven at 100°C for 4-6 hours. The result is a vivid turquoise Iron Blue with intense chroma, high opacity and dramatic shimmer.

Embodiment 2

[0038] Weigh 30g of Ferward Symphony Interference Blue Pearlescent Pigment, put it into a reaction container, add 450mL of deionized water, stir and heat up to 30°C, and calculate the iron with a coating rate of 18-20% by weight on a transparent sheet-like substrate The amount of ferrocyanide salt solution and ferric salt solution required by the blue is pumped into the calculated amount of 0.24mol / L sodium ferrocyanide and 0.33mol / L ferric ammonium sulfate solution in parallel with a constant flow pump , the reactant immediately turned blue, and the reaction material was added within 4~5h, and then continued to react for 30min. Filter the suspension of the blue pigment, wash it with deionized water until there is no acid and salt, and dry it in an oven at 100°C for 4-6 hours. The result is a deep violet-blue Iridescent Iron Blue with intense chroma, high opacity and pronounced shimmer.

Embodiment 3

[0040] Weigh 30g of Ferward Symphony Interference Blue Pearlescent Pigment, put it into a reaction container, add 450mL of deionized water, stir and heat up to 30°C, and calculate the iron with a coating rate of 18-20% by weight on a transparent sheet-like substrate The amount of ferrocyanide salt solution and ferric nitrate solution required by the corresponding needs of the blue is pumped into the calculated amount of 0.20mol / L ammonium ferrocyanide and 0.24mol / L ferric nitrate solution in parallel with a constant flow pump, The reactant turns blue immediately, and the reaction material is added within 4~5h, and then the reaction is continued for 30min. Filter the suspension of the blue pigment, wash it with deionized water until there is no acid and salt, and dry it in an oven at 100°C for 4-6 hours. The result is a light purple-blue Iridescent Iron Blue with intense chroma, high opacity and pronounced shimmer.

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Abstract

The invention relates to a process for preparing iron blue with fantastic color effect, and belongs to preparation of strong interference pigments of multi-coated laminar base materials. Ferrous cyanide, trivalent ferric salt and transparent laminar base material are used as raw materials in the iron blue pigment with fantastic color effect; and the process comprises the following steps of: continuously stirring the raw materials at the temperature of between 10 and 70 DEG C, and precipitating reactants of certain concentration on the transparent laminar base material to obtain an iron blue coated fantastic color effect pigment. Different iron blue color phases are obtained by changing reaction parameters, and then a finished product is obtained by filtering, washing and drying. The process has the advantages of reasonability in design, simplicity in production process, low pollution and low equipment cost and energy consumption.

Description

technical field [0001] The invention relates to a preparation process of iron blue with illusion effect, which belongs to the preparation of strong interference pigments based on multi-coated sheet substrates. Background technique [0002] Iron blue is also known as Prussian blue, Berlin blue, Miroli blue, or Chinese blue. These names are usually for insoluble pigments based on Fe(II)Fe(III) cyano complexes. Discovered by Diesbach in Berlin in 1704 by precipitation reaction, iron blue can be regarded as the oldest synthetic coordination compound. Miloli was the first to produce it as a pigment on an industrial scale in the early 19th century. Iron blue is insoluble in oil and water, does not bleed, has high tinting strength, and is resistant to light, weather, and acid, so it is widely used in cosmetics, paints, inks, and stationery. With the continuous development of the market economy, the variety of paint designs and colors continues to increase, and the publishing and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/26
Inventor 周亚军蒋汉文吴文超沈艳娥
Owner 杭州弗沃德精细化工有限公司
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