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Preparation process of phthalocyanine blue for PU inkjet printing

A preparation process, phthalocyanine blue technology, applied in the field of pigment processing, can solve the problems of environmental pollution, loss of fluidity, low yield, etc., and achieve the effect of huge market space

Inactive Publication Date: 2017-02-15
XUANCHENG YABANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing phthalocyanine blue BGS (also known as pigment blue 15:3) can be widely used in offset ink, ink and other systems, but it does not have anti-flocculation performance. Therefore, if phthalocyanine blue BGS is used in solvent-based inks, its The resin system of the ink will form a jelly shape and lose fluidity, so it cannot be used
[0003] Studies have shown that adding some phthalocyanine derivatives, such as sulfonated copper phthalocyanine, to phthalocyanine blue BGS can improve the anti-flocculation performance of phthalocyanine blue products. The phthalocyanine blue obtained by this method is currently called Pigment blue 15:4, but the existing sulfonated copper phthalocyanine either pollutes the environment during the production process, the yield is low, or the degree of sulfonation is difficult to control, resulting in poor quality stability of the product

Method used

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  • Preparation process of phthalocyanine blue for PU inkjet printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: the preparation of phthalocyanine blue

[0018] 1) Put 600kg of anhydrous sodium sulfate and 900kg of copper phthalocyanine into a 15,000L horizontal ball mill, grind at 75°C for 20 hours, beat the pulp, boil with acid to remove iron, then reflux with tetrahydrofuran solvent for 3 hours, distill off the solvent, press filter, Wash with water until the conductivity is less than 300μs / cm, and the unloaded filter cake is crude phthalocyanine blue;

[0019] 2) Under stirring conditions, put 6000kg of concentrated sulfuric acid with a concentration of 101% into the reaction kettle, slowly put in 700kg of copper phthalocyanine at 40°C, raise the temperature to 70°C at a speed of 3-5°C / min, keep it warm for 2h, and then Add 8t of water, 260kg of C14 alkyl trimethyl ammonium chloride, 60 kg of C18 dialkyl dimethyl ammonium chloride, heat up to 50°C, keep warm, and reach the end of sulfonation when the measured absorbance is 0.5, turn on the circulating cooling wat...

Embodiment 2

[0021] Embodiment 2: the preparation of phthalocyanine blue

[0022] 1) Put 600kg of anhydrous sodium sulfate and 1800kg of copper phthalocyanine into a 15,000L horizontal ball mill, grind at 60°C for 8 hours, beat the pulp, boil with acid to remove iron, then reflux with THF solvent for 2.5h, distill off the solvent, and press filter , washed with water until the conductivity is less than 300μs / cm, and the unloaded filter cake is crude phthalocyanine blue;

[0023] 2) Under stirring conditions, put 6000kg of concentrated sulfuric acid with a concentration of 102% into the reactor, slowly drop in 800kg of copper phthalocyanine at 35°C, heat up to 80°C at a speed of 3-5°C / min, and keep the temperature for 2.5h. Add 6t of water, 230kg of C14 alkyltrimethylammonium chloride, and 65kg of C20 dialkyldimethylammonium chloride in sequence, raise the temperature to 55°C, keep it warm, and reach the end of sulfonation when the measured absorbance is 0.5, and turn on the circulation coo...

Embodiment 3

[0025] Embodiment 3: the preparation of phthalocyanine blue

[0026] 1) Put 600kg of anhydrous sodium sulfate and 1500kg of copper phthalocyanine into a 15,000L horizontal ball mill, grind at 80°C for 30 hours, beat the pulp, boil with acid to remove iron, then reflux with tetrahydrofuran solvent for 2 hours, distill off the solvent, press filter, Wash with water until the conductivity is less than 300μs / cm, and the unloaded filter cake is crude phthalocyanine blue;

[0027] 2) Under stirring conditions, put 6000kg of concentrated sulfuric acid with a concentration of 105% into the reaction kettle, slowly put in 500kg of copper phthalocyanine at 30°C, raise the temperature to 70°C at a speed of 3-5°C / min, keep it warm for 2h, and then Add 5t of water, 290kg of C14 alkyl trimethyl ammonium chloride, 55 kg of C18 dialkyl dimethyl ammonium chloride, raise the temperature to 50°C, keep it warm, and reach the end of sulfonation when the measured absorbance is 0.5, turn on the circu...

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Abstract

The invention discloses a preparation process of phthalocyanine blue for PU inkjet printing. The preparation process comprises the following steps: taking 1 part by drying weight of coarse phthalocyanine blue, and adding 0.05 to 0.15 part by drying weight of phthalocyanine derivative; then adding 8 to 12 parts of water, stirring, and raising the temperature to be 60 to 70 DEG C; adding 0.02 to 0.06 part of hyperdispersant, stirring, filtering, washing and drying, thus finally obtaining a finished product. According to the preparation process disclosed by the invention, the phthalocyanine derivative is added into the coarse phthalocyanine blue by adopting the proportion, so that prepared phthalocyanine blue for the PU inkjet printing has remarkable improvement effects on glossiness, transparency and tinting strength. Besides, by correct selection and use of the hyperdispersant, the compatibility between a pigment product and a resin system can be improved, the pigment product and the resin system are combined more firmly, and the printing glossiness is good.

Description

technical field [0001] The invention relates to the field of pigment processing, in particular to a preparation process of phthalocyanine blue for PU printing ink. Background technique [0002] The existing phthalocyanine blue BGS (also known as pigment blue 15:3) can be widely used in offset ink, ink and other systems, but it does not have anti-flocculation performance. Therefore, if phthalocyanine blue BGS is used in solvent-based inks, its The resin system of the ink will form a jelly shape and lose fluidity, so it cannot be used. [0003] Studies have shown that adding some phthalocyanine derivatives, such as sulfonated copper phthalocyanine, to phthalocyanine blue BGS can improve the anti-flocculation performance of phthalocyanine blue products. The phthalocyanine blue obtained by this method is currently called Pigment blue 15:4, but the existing sulfonated copper phthalocyanine either pollutes the environment during the production process, the yield is low, or the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22
CPCC09B67/0035
Inventor 汪国建徐再汉张思志肖少林郭大双吴晟郑贝贝
Owner XUANCHENG YABANG CHEM
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