A kind of industrialized production method of migration-resistant bright red pigment 150 for pu

A production method and migration-resistant technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve problems such as poor heat resistance, troubles of downstream enterprises, migration, etc., to achieve high heat resistance and ensure beating effect. , the effect of short response time

Active Publication Date: 2016-07-06
CROWN CHEMICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the products obtained by the traditional azo lake pigment red production method are used in PU tanning, there will be serious migration phenomenon and poor heat resistance, which will bring great troubles to downstream enterprises

Method used

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  • A kind of industrialized production method of migration-resistant bright red pigment 150 for pu
  • A kind of industrialized production method of migration-resistant bright red pigment 150 for pu

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Put 200Kg of 3-amino-4-methoxybenzanilide into an ordinary reaction kettle, add 2000Kg of water, stir rapidly for 30 minutes, quickly add 250Kg of hydrochloric acid with a content of 30% for acid precipitation and salt formation, and obtain a dispersion liquid, and then At 0°C, add 140Kg of 30% sodium nitrite solution within 5 minutes for diazotization and stirring reaction for 1 hour. Add 240kg of industrial sodium acetate and MOA-44kg directly into the diazonium solution and stir for 10 minutes, that is, the preparation of the diazo solution is completed. , put it into the coupling reaction kettle, add 2000kg of water in the coupling reaction kettle to adjust the reaction liquid volume, and wait for the coupling reaction;

[0032] 2) Add 1600kg of water and 160kg of 30% liquid caustic soda to an ordinary reactor, start stirring, heat up to 80°C with steam, add 160kg of 2-hydroxy-3-naphthylcarboxamide until stirred and dissolved; then quickly add ice and cool down to...

Embodiment 2

[0035] 1) Put 200Kg of 3-amino-4-methoxybenzanilide into an ordinary reaction kettle, add 2000Kg of water, stir rapidly for 30 minutes, quickly add 250Kg of hydrochloric acid with a content of 30% for acid precipitation and salt formation, and obtain a dispersion liquid, and then At 0°C, add 140Kg of 30% sodium nitrite solution within 5 minutes for diazotization and stirring reaction for 1 hour. Add 240kg of industrial sodium acetate and OS-154kg directly into the diazonium solution and stir for 10 minutes, that is, the preparation of the diazo solution is completed. , put it into the coupling reaction kettle, add 2000kg of water in the coupling reaction kettle to adjust the reaction liquid volume, and wait for the coupling reaction;

[0036] 2) Add 1600kg of water and 160kg of 30% liquid caustic soda to an ordinary reactor, start stirring, heat up to 80°C with steam, add 160kg of 2-hydroxy-3-naphthylcarboxamide until stirred and dissolved; then quickly add ice and cool down to...

Embodiment 3

[0039] 1) Put 200Kg of 3-amino-4-methoxybenzanilide into an ordinary reaction kettle, add 2000Kg of water, stir rapidly for 30 minutes, quickly add 320Kg of hydrochloric acid with a content of 30% for acid precipitation and salt formation, and obtain a dispersion liquid, and then At 0°C, add 140Kg of 30% sodium nitrite solution within 5 minutes for diazotization and stirring reaction for 1 hour. Add 240kg of industrial sodium acetate and MOA-46kg directly into the diazonium solution and stir for 10 minutes, that is, the preparation of the diazo solution is completed. , put it into the coupling reaction kettle, add 2000kg of water in the coupling reaction kettle to adjust the reaction liquid volume, and wait for the coupling reaction

[0040] 2) Add 1600kg of water and 160kg of 30% liquid caustic soda to an ordinary reactor, start stirring, and heat up to 82°C with steam, then add 8kg of 3-hydroxy-2-naphthoic acid and 152kg of 2-hydroxy-3-naphthoamide until stirring and dissolving...

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Abstract

The invention relates to an industrial production method of migration-resistant bright red pigment 150 for PU, which belongs to the technical field of pigment synthesis. It uses 3-amino-4-methoxybenzanilide, water and hydrochloric acid to obtain a dispersion liquid through acid precipitation and salt formation; in the dispersion liquid, sodium nitrite aqueous solution is diazotized to obtain a diazotized solution, and then mixed with 2-Hydroxy-3-naphthoamide and 3-hydroxy-2-naphthoic acid undergo a coupling reaction, and then undergo a temperature-raising crystallization reaction to obtain a migration-resistant bright red pigment for PU. By adopting the above technology, the present invention has mild reaction conditions, low equipment requirements, short reaction time, common modifiers and less difficulty in application; and the raw materials used do not contain halogen, which meets the limited halogen content of products on the market and meets The new environmental protection theme advocated; the obtained product has bright color, its heat resistance reaches 230 ℃, and its migration resistance is grade 5.

Description

technical field [0001] The invention belongs to the technical field of pigment synthesis, and in particular relates to an industrial production method of a migration-resistant bright red pigment 150 for PU with high migration resistance and bright color. Background technique [0002] Compared with C.I. Pigment Red 48:2 and 48:3, the pigment exhibits blue light, which is equivalent to that of Pigment Red 57:1. Its advantages are good migration resistance, good solvent resistance, good PP heat resistance of 230°C, and bright color. Mainly used for fabric printing and dyeing, plastic, thermoplastic rubber; soft PVC coloring does not bleed, more lightfast than P.R.57:1, good solvent resistance in the direction of solvent ink, and good gloss. [0003] PU is the abbreviation of polyurethane in English, and its chemical Chinese name is "polyurethane". PU artificial leather is the skin of polyurethane components. Now it is widely used in the decoration of luggage, clothing, shoes, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C245/06C09B29/20C09B67/20
Inventor 杨宗泽宁正才
Owner CROWN CHEMICAL CORP
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