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Preparation process of phthalocyanine green pigment for solvent ink

A preparation process, phthalocyanine green technology, applied in the field of preparation process of phthalocyanine green pigments for solvent inks, can solve the problems of flocculation, easy crystallization and expansion of phthalocyanine green pigments, etc., so as to alleviate flocculation, improve affinity and Effect of anti-crystallization performance and improvement of printing efficiency

Pending Publication Date: 2021-10-22
美利达颜料工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a preparation process of a phthalocyanine green pigment for solvent ink, which solves the problem that the phthalocyanine green pigment is prone to crystal expansion and flocculation in the prior art

Method used

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  • Preparation process of phthalocyanine green pigment for solvent ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] S1. Mix and stir 200 kg of chlorinated copper phthalocyanine (chlorine content is 3%) and 1.6 t of 98% sulfuric acid at a stirring speed of 60 rpm, heat up to 90° C., stir and keep warm for 2 hours, and cool to 60° C. to obtain the S1 mixture;

[0028] Add 6t of water to the mixture of S2 and S1, and control the temperature of 8t of ice cubes at 30°C to dilute, filter, and wash with water until the pH is 5;

[0029] S3, add 4t of water and sodium hydroxide to adjust pH=7, heat up to 80°C, keep warm for 1h, cool down to 70°C to obtain the S3 mixture for later use;

[0030] S4. Add 99% acetic acid to 2 t of water to adjust the pH=4, add 195 kg of dimethyl tallow amine after heating up to 85°C, dissolve until translucent, and stir with the mixture of S3 for 1 hour after cooling down to 60°C;

[0031] S5, filter and wash with water until pH = 8 to obtain a phthalocyanine derivative filter cake for later use;

[0032] S6. Add phthalocyanine green pigment to the filter cake ...

Embodiment 2

[0035] S1. Mix and stir 250 kg of chlorinated copper phthalocyanine (chlorine content is 3%) and 2.5 t of 98% sulfuric acid at a stirring speed of 50 rpm, heat up to 85° C., stir and keep warm for 3 hours, and cool down to 50° C. to obtain the S1 mixture;

[0036] Add 6t of water to the mixture of S2 and S1, and control the temperature of 9t of ice cubes at 28°C to dilute, filter, and wash with water until the pH is 5;

[0037] S3. Add 3 t of water and sodium hydroxide to adjust the pH to 7, raise the temperature to 90°C, keep it warm for 1 hour, and cool down to 60°C to obtain the S3 mixture for later use;

[0038] S4. Add 99% acetic acid to 2 t of water to adjust the pH=3, add 205 kg of dihydrogenated tallow dimethyl ammonium chloride after heating up to 85°C, dissolve until translucent, cool down to 50°C, and stir with the mixture of S3 for 2 hours;

[0039] S5, filter and wash with water until pH = 8 to obtain a phthalocyanine derivative filter cake for later use;

[0040...

Embodiment 3

[0043] S1. Mix and stir 200 kg of chlorinated copper phthalocyanine (chlorine content is 4%) and 2 t of 98% sulfuric acid at a stirring speed of 50 rpm, heat up to 85° C., stir and keep warm for 3 hours, and cool to 50° C. to obtain the S1 mixture;

[0044] Add 5t of water to the mixture of S2 and S1, and control the temperature of 8t of ice cubes at 32°C to dilute, filter, and wash with water until the pH is 5;

[0045] S3, add 4t of water and sodium hydroxide to adjust the pH=7, raise the temperature to 88°C, keep it warm for 1h, and cool down to 70°C to obtain the S3 mixture for later use;

[0046] S4. Add 99% acetic acid to 1.5t of water to adjust the pH=2. After heating up to 80°C, add 195kg of tallow propylenediamine, dissolve until translucent, cool down to 65°C, and stir with the mixture of S3 for 2 hours;

[0047] S5, filtering and washing with water until pH = 7 to obtain a phthalocyanine derivative filter cake for later use;

[0048] S6. Add phthalocyanine green pi...

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Abstract

The invention relates to the technical field of phthalocyanine green pigment production, and provides a preparation process of a phthalocyanine green pigment for solvent ink. The preparation process comprises the following steps: S1, mixing and stirring chlorinated copper phthalocyanine and sulfuric acid, and carrying out heating, heat preservation and cooling to obtain a mixture S1; S2, diluting, filtering and washing the mixture in S1; S3, adding water and sodium hydroxide to adjust the pH value, and heating, preserving heat and cooling to obtain a mixture in S3 for later use; S4, adding acetic acid into water, heating, adding fatty amine, dissolving to be semitransparent, cooling, and stirring with the mixture in S3; S5, filtering and washing to obtain a phthalocyanine derivative filter cake for later use; S6, adding a phthalocyanine green pigment into the phthalocyanine derivative filter cake, and stirring; and S7, filtering and drying to obtain the phthalocyanine green pigment. According to the technical scheme, the problem that the phthalocyanine green pigment in the prior art is easy to crystallize, expand and flocculate is solved.

Description

technical field [0001] The invention relates to the technical field of phthalocyanine pigment production, in particular to a preparation process of phthalocyanine green pigment for solvent ink. Background technique [0002] Phthalocyanine green is a halogenated copper phthalocyanine used as an important organic pigment in paints, coatings, inks, rubber, plastics, leather, synthetic fibers and other fields. As an organic colored pigment, phthalocyanine green has the advantages of convenient manufacture and excellent performance, and its application field is gradually expanding. [0003] Since organic pigments are generally used in a highly dispersed state, there will be many unfavorable factors in the process of production, use and storage, such as phthalocyanine green in solvent ink system chlorinated polypropylene, polyamide, polyurethane and solvent toluene, two In toluene, acetone, and chlorinated vinegar, crystallization is prone to expand, resulting in thickening of vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/08C09B67/20
CPCC09B67/0008C09B67/0032C09B67/006
Inventor 李庆豹常江涛郑进峰
Owner 美利达颜料工业有限公司
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