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A kind of preparation method of phthalocyanine blue pigment

A technology for phthalocyanine blue and pigments, which is applied in the field of preparation of phthalocyanine blue pigments, can solve the problems of poor pigment coloring power and dispersion performance, large energy consumption, and many processing procedures, and achieve good dispersibility and coloring power and shorten the production time. Process flow and the effect of avoiding dust pollution

Active Publication Date: 2021-02-19
XUANCHENG YABANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The shortcomings of the above two methods are: first, the refining process is long, the sewage discharge volume is large, and the energy consumption is large; second, after the pressure filtration and drying treatment, the primary particles of the pigment will condense into secondary particles, which are aggregated. Bulk state, leading to poor coloring power and dispersion performance of pigments
Third, dry powder preparations are obtained after drying and crushing. The apparent particle size is fine, the dust is large, the production environment is harsh, and it is difficult to control the atmospheric environment.
However, the additives used in the former are difficult to be recycled, resulting in serious water pollution and difficult wastewater treatment; the latter has many processing steps and consumes a lot of energy

Method used

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  • A kind of preparation method of phthalocyanine blue pigment
  • A kind of preparation method of phthalocyanine blue pigment
  • A kind of preparation method of phthalocyanine blue pigment

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: the preparation of phthalocyanine blue pigment

[0030] (1) The crude product copper phthalocyanine is synthesized by the solvent method, and 510kg crude product copper phthalocyanine and 11kg granular nano-calcium are mixed, dispersed, and ground in a refrigerated mill to obtain a homogeneous copper phthalocyanine; the refrigerated mill The working temperature of the powder machine is 115°C, the discharge temperature of homogeneous copper phthalocyanine is 95°C, and the discharge particle size D90≤5μm;

[0031] (2) Transfer the homogeneous copper phthalocyanine into the distillation reaction kettle, add 1800LTHF, feed nitrogen to protect the reaction until the end, and reflux at 65°C for 1.5 hours to obtain the homogeneous β crystal phthalocyanine blue;

[0032] (3) Add 10.88 g of unsaturated polycarboxylic acid polymer, 0.37 kg of polysiloxane copolymer, and 3.75 kg of titanate coupling agent to the homogeneous β crystal phthalocyanine blue several times...

Embodiment 2

[0035] Embodiment 2: the preparation of phthalocyanine blue pigment

[0036] (1) The crude product copper phthalocyanine is synthesized by the solvent method, and the 510kg crude product copper phthalocyanine and 12kg granular nano-calcium are mixed, dispersed, and ground in a refrigerated mill to obtain a homogeneous copper phthalocyanine; the refrigerated mill The working temperature of the powder machine is 110°C, the discharge temperature of homogeneous copper phthalocyanine is 90°C, and the discharge particle size D90≤5μm;

[0037](2) Transfer the homogeneous copper phthalocyanine into the distillation reaction kettle, add 1800LTHF, pass through the nitrogen gas to protect the reaction until the end, and reflux at 65°C for 2 hours to obtain the homogeneous β crystal phthalocyanine blue;

[0038] (3) Add 13.05 kg of unsaturated polycarboxylic acid polymer, 0.45 kg of polysiloxane copolymer, and 4.5 kg of titanate coupling agent to the homogeneous β crystal phthalocyanine b...

Embodiment 3

[0041] Embodiment 3: the preparation of phthalocyanine blue pigment

[0042] (1) The crude product copper phthalocyanine is synthesized by the solvent method, and 510kg crude product copper phthalocyanine and 13kg granular nano-calcium are mixed, dispersed, and ground in a refrigerated mill to obtain a homogeneous copper phthalocyanine; the refrigerated mill The working temperature of the powder machine is 108°C, the discharge temperature of homogeneous copper phthalocyanine is 90°C, and the discharge particle size D90≤5μm;

[0043] (2) Transfer the homogeneous copper phthalocyanine into the distillation reaction kettle, add 1800LEAC, pass through nitrogen to protect the reaction until the end, and reflux at 76°C for 2.5 hours to obtain the homogeneous β crystal copper phthalocyanine;

[0044] (3) Add 14.5 kg of unsaturated polycarboxylic acid polymer, 0.5 kg of polysiloxane copolymer, and 5 kg of titanate coupling agent to the homogeneous β crystal copper phthalocyanine sever...

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Abstract

The invention belongs to the technical field of pigment processing, and particularly relates to a preparation method of a phthalocyanine blue pigment. The method comprises the steps that crude copperphthalocyanine synthesized by a grinding aid and solvent method is ground to prepare homogeneous copper phthalocyanine; after homogeneous copper phthalocyanine is subjected to solvent steaming, dispersion coating, resin dispersion and extrusion granulation, the phthalocyanine blue pigment is prepared; the preparation method of the phthalocyanine blue pigment has the advantages that the proceduresare fewer, the energy consumption is low, the pollution is less, and the pigment is good in property and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of pigment processing, and in particular relates to a preparation method of phthalocyanine blue pigment. Background technique [0002] Powder coatings are solvent-free solid coatings commonly used for the protection and decoration of metal substrates. As one of the commonly used raw materials for the preparation of powder coatings, the dispersibility and stability of phthalocyanine blue pigment itself will affect the tinting strength, gloss and yield of the product. At present, the phthalocyanine blue with good stability α crystal form and β crystal form structure is suitable for the preparation of powder coatings. The production methods of the above two crystal forms of phthalocyanine blue are as follows: [0003] The first one is solid-phase method synthesis, acid analysis method refining, and its concrete production process is as follows: 1) raw material is about to react phthalic anhydride, urea, cuprou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/41C09D5/03C09B67/20C09B67/04C09B67/08
CPCC09B67/0002C09B67/0013C09B67/006C09D5/035
Inventor 肖于才汪国建徐再汉刘春华肖少林张鹏刘邦坤熊宁唐勇
Owner XUANCHENG YABANG CHEM
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