Preparation method for C.I. paratonere 49:1

A technology of pigment red and pigment, which is applied in the field of preparation of C.I. Pigment Red 49:1, can solve the problems of low tinting power, poor gloss and high viscosity, and achieve high tinting power, gloss and low viscosity

Active Publication Date: 2012-12-26
宇虹颜料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a C. I. A preparation method of Pigment Red 49:1 to solve the problems of high viscosity, low tinting strength and poor gloss when the C.I. Pigment Red 49:1 produced by the existing preparation method is applied in an aqueous medium

Method used

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  • Preparation method for C.I. paratonere 49:1

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Preparation of diazo solution

[0023] Add 1000 liters of water to the diazo reactor, add 78.73 kg of 30% sodium hydroxide solution, add 128.38 kg of 100% 2-naphthylamine-1-sulfonic acid, add 100% 2-naphthylamine-1,5- Add 0.294 kg of disulfonic acid, add 5 kg of fatty alcohol polyoxyethylene (15) ether, stir to dissolve, the pH value of the mixed solution is 9, then add ice to cool to 0°C, add 165.41 kg of 30% hydrochloric acid dropwise, and then Add 133.28 kg of 30% sodium nitrite solution dropwise within 10 minutes, and continue to stir for 60 minutes until it is slightly blue when tested with starch-potassium iodide test paper, the temperature is 0-10°C, and the volume is adjusted to 3000 liters to obtain diazonium solution .

[0024] Wherein the molar ratio of sodium hydroxide to 2-naphthylamine-1-sulfonic acid is 1.026:1; the molar ratio of 2-naphthylamine-1,5-disulfonic acid to 2-naphthylamine-1-sulfonic acid is 0.00174:1; The molar ratio of hydrochloric aci...

Embodiment 2

[0037] (1) Preparation of diazo solution

[0038] Add 1000 liters of water to the diazo reactor, add 78.73 kg of 30% sodium hydroxide solution, add 128.38 kg of 100% 2-naphthylamine-1-sulfonic acid, add 100% 2-naphthylamine-1,5- Add 0.294 kg of disulfonic acid, add 10 kg of aliphatic amine polyoxyethylene (15) ether, stir to dissolve, the pH value of the mixed solution is 9, then add ice to cool to 0°C, add 165.41 kg of 30% hydrochloric acid dropwise, and then Add 133.28 kg of 30% sodium nitrite solution dropwise within 10 minutes, and continue to stir for 60 minutes until it is slightly blue when tested with starch-potassium iodide test paper, the temperature is 0-10°C, and the volume is adjusted to 3000 liters to obtain diazonium solution .

[0039] Wherein the molar ratio of sodium hydroxide to 2-naphthylamine-1-sulfonic acid is 1.026:1; the molar ratio of 2-naphthylamine-1,5-disulfonic acid to 2-naphthylamine-1-sulfonic acid is 0.00174:1; The molar ratio of hydrochloric ...

Embodiment 3

[0053] (1) Preparation of diazo solution

[0054] Add 1000 liters of water to the diazo reactor, add 78.73 kg of 30% sodium hydroxide solution, add 128.38 kg of 100% 2-naphthylamine-1-sulfonic acid, add 100% 2-naphthylamine-1,5- Add 0.294 kg of disulfonic acid, add 15 kg of fatty acid polyoxyethylene (9) ether, stir and dissolve, the pH value of the mixed solution is 9, then add ice to cool to 0°C, add 165.41 kg of 30% hydrochloric acid dropwise, and then Add 133.28 kg of 30% sodium nitrite solution dropwise within 1 minute, and continue to stir for 60 minutes until it is slightly blue when tested with starch-potassium iodide test paper, the temperature is 0-10°C, and the volume is adjusted to 3000 liters to obtain a diazonium solution.

[0055] Wherein the molar ratio of sodium hydroxide to 2-naphthylamine-1-sulfonic acid is 1.026:1; the molar ratio of 2-naphthylamine-1,5-disulfonic acid to 2-naphthylamine-1-sulfonic acid is 0.00174:1; The molar ratio of hydrochloric acid to...

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Abstract

The invention relates to a preparation method for C.I. paratonere 49:1 and belongs to the field of organic pigments. According to the preparation method, in the preparation of diazonium liquid, a second diazonium component 2-naphthylamine-1,5-disulfonic acid and a non-ionic surface active agent are added; in the preparation of coupling liquid, a second coupling component 2-hydroxy-3-naphthoic acid is added; and in color lake reaction, a polyoxyalkylene amine pigment modifying agent and a second color lake agent aluminum chloride are added. Specifically, the preparation method comprises the following steps: preparing the diazonium liquid; preparing the coupling liquid; performing coupled reaction; and performing color lake reaction and after-treatment. The C.I. paratonere 49:1 prepared according to the preparation method has lower viscosity and higher tinting power and gloss.

Description

technical field [0001] The invention belongs to the field of organic pigments, in particular to a preparation method of C.I. Pigment Red 49:1. Background technique [0002] C.I. Pigment Red 49:1 is bluish bright red, mainly used in water-based paints, industrial paints, water-based inks, offset printing inks, screen printing inks, and art pigments. The existing preparation process of C.I. Pigment Red 49:1 is mostly: dissolving 2-naphthylamine-1-sulfonic acid in sodium hydroxide solution, then adding hydrochloric acid for acid analysis, then adding sodium nitrite solution dropwise, and reacting for 1 hour. Obtain diazo solution; dissolve 2-naphthol with sodium hydroxide solution to obtain coupling solution; put the diazo solution into the coupling solution for coupling reaction, after the coupling reaction is completed, add barium chloride solution to the coupling reaction solution to carry out color lake After the reaction is completed, the reactant is filtered, washed, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B63/00C09D11/00C09D11/037
Inventor 陈都方吕东军宋天强宿帅帅
Owner 宇虹颜料股份有限公司
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