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Preparation method of C.I.P.Y180 pigment

A pigment and dispersion technology, applied in disazo dyes and other directions, can solve the problems of increased use of inorganic phosphates, insufficient environmental protection of waste water nutrition, and increased cost of isobutanol, and achieves improved tinting strength, bright and bright colors, dripping long time effect

Inactive Publication Date: 2011-01-26
姚涌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this method, although its tinting strength is improved, the use of inorganic phosphate is increased, the nutrition of wastewater is not environmentally friendly, and the use of isobutanol also increases the cost, and the shade is not bright enough

Method used

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  • Preparation method of C.I.P.Y180 pigment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Take 18.9 grams of BAPE, add 500ml of water, add 40g of HCl (35%) after dispersion, heat up to 60°C to dissolve it, then cool to 0°C, add NaNO dropwise 2 (30%) to a slight excess. After stirring for half an hour, add urea to remove excess NaNO2, add 5% activated carbon for decolorization for 1 hour, filter, and refrigerate the filtrate for later use.

[0017] Take 44 grams of AABI, add it to 500 ml of water, add 3.5 grams of SPAN-20, add 12 g of NaOH to dissolve after dispersion, and then filter to obtain a coupling component solution. After cooling the solution to 15 degrees Celsius, add acetic acid to precipitate, make PH = 6. and keep the system stable at 15 degrees Celsius;

[0018] Add the diazonium salt to the coupling suspension within 5 hours, continue to stir for 1 hour, raise the temperature to 95° C., keep warm for 1 hour, filter and wash to obtain the crude pigment.

[0019] Disperse the crude product obtained above with water at a ratio of 1:20, add 2.0 g...

example 2

[0021] Take 18.9 grams of BAPE, add 500ml of water, add 40g of HCl (35%) after dispersion, heat up to 60°C to dissolve it, then cool to 0°C, add NaNO dropwise 2 (30%) to a slight excess. After stirring for half an hour, add urea to remove excess NaNO2, add 5% activated carbon for decolorization for 1 hour, filter, and refrigerate the filtrate for later use.

[0022] Take 44 grams of AABI, add it to 500 ml of water, add 5.0 grams of SPAN-60, add 12 g of NaOH to dissolve after dispersion, and then filter to obtain a coupling component solution. After cooling the solution to 10 degrees Celsius, add acetic acid to precipitate, make PH = 6.0 and keep the system stable at 10 degrees Celsius;

[0023] Add the diazonium salt to the coupling suspension within 8 hours, continue to stir for 1 hour, raise the temperature to 90° C., keep warm for 1 hour, filter and wash to obtain the crude pigment.

[0024] Disperse the crude product obtained above with water at a ratio of 1:40, then add...

example 3

[0026] Take 18.9 grams of BAPE, add 500ml of water, add 40g of HCl (35%) after dispersion, heat up to 60°C to dissolve it, then cool to 0°C, add NaNO dropwise 2 (30%) to a slight excess. After stirring for half an hour, add urea to remove excess NaNO2, add 5% activated carbon for decolorization for 1 hour, filter, and refrigerate the filtrate for later use.

[0027] Take 44 grams of AABI, add it to 500 ml of water, add 4.0 grams of SPAN-80, add 12 g of NaOH to dissolve after dispersion, and then filter to obtain a coupling component solution. After cooling the solution to 12 degrees Celsius, add acetic acid to precipitate, make PH = 6.0 and keep the system stable at 12 degrees Celsius;

[0028] Add the diazonium salt to the coupling suspension within 6 hours, continue to stir for 1 hour, raise the temperature to 95° C., keep warm for 1 hour, filter and wash to obtain the crude pigment.

[0029] Disperse the crude product and water obtained above at a ratio of 1:20, then add ...

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Abstract

The invention discloses a preparation method of C.I.P.Y180 pigment, comprising the following steps: (1) taking BAPE and dispersing with HC1 and water, heating to 60 DEG C for dissolving the BAPE, cooling and separating out the BAPE to avoid agglomeration of the BAPE owing to failure in salification with the HC1 at low temperature so that diazotation can be completed, and adding NaNO2 at 0-5 DEG C for reacting to obtain diazonium salt; (2) taking AABI, dissolving with NaOH, dispersing with a span series emulsifier which can be span20, span40, span60 and span 80 or a complex thereof, separating out the AABI with acetic acid, and keeping PH at 4-7; and (3) coupling at lower temperature, and adding diazonium salt solution dropwise to coupling liquid component slurry at 10-15 DEG C within 5-8 hours.

Description

technical field [0001] The invention relates to a preparation method of a pigment, in particular to a preparation method of a C.I.P.Y180 pigment. Background technique [0002] C.I.P.Y180 belongs to benzimidazolone pigments, CAS.NO: 77804-81-0 and its molecular formula is [0003] [0004] Benzimidazolone pigments belong to the series of high-grade organic pigments, which have the characteristics of bright color, simple production process, excellent application performance and high coloring strength. Because the benzimidazolone containing cyclic amide groups in the pigment molecule changes the aggregation form of the molecule through the hydrogen bond formed between the adjacent molecules, so that the pigment has a higher melting point, which can significantly reduce the solubility in the solvent. It has excellent light and weather fastness, solvent resistance, migration resistance, and heat stability. Among them, PY180 is the only benzimidazolone pigment with disazo mol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B35/03
Inventor 姚涌
Owner 姚涌
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