Pigment derivative, pigment for polyurethane ink, and preparation method for both

A technology of pigment derivatives and compounds, applied in the field of organic pigment yellow 13 and its preparation, can solve problems such as high viscosity, and achieve the effects of reducing ink cost, high tinting strength and excellent transparency

Active Publication Date: 2021-04-02
LONGKOU UNION CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of pigment derivative and preparation method thereof, it is used for preparing the pigment for polyurethane ink, also provides a kind of pigment for polyurethane ink and preparation method thereof, solves the problem that the organic pigment prepared by the existing method is added to environment-friendly The technical problem of high viscosity after polyurethane ink

Method used

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  • Pigment derivative, pigment for polyurethane ink, and preparation method for both
  • Pigment derivative, pigment for polyurethane ink, and preparation method for both
  • Pigment derivative, pigment for polyurethane ink, and preparation method for both

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0081] [Example 1] Synthesis of Hue Adjuster

[0082] Add 150ml of water and 20g of hydrochloric acid in the reaction tank, add 5g of dianisidine under stirring, and disperse for 30 minutes. Add ice to the reaction tank to lower the temperature, the temperature is -5-0°C, add 15g of sodium nitrite for diazotization reaction, starch potassium iodide test paper detects slightly blue, and stir for 30 minutes. Excessive sodium nitrite was destroyed with sulfamic acid, tested by starch potassium iodide test paper, showing colorless, and a hue adjusting agent solution was obtained.

[0083]

[0084] Anisidine

[0085] Reaction equation NaNO 2 +HCl→HNO 2 +NaCl

[0086] QUR 2 +2HCl+NaNO 2 →ArN 2 + Cl - +NaCl+2H 2 o

[0087] Wherein Ar represents dianisidine.

example 2

[0088] 【Example 2】Pigment Derivatives I

[0089] Pigment derivative I was synthesized by the following method:

[0090] 1. Diazotized components

[0091] Add 500ml of water and 30g of hydrochloric acid into a small diazotization reaction tank, add 35g of 3,3-dichlorobenzidine under stirring, and disperse and stir for 60 minutes. Add ice to the small diazotization reaction tank, the temperature is -5-0°C, add 20g of sodium nitrite for diazotization reaction until the starch potassium iodide test paper is slightly blue, stir for 60 minutes, and obtain the diazonium salt solution of the pigment derivative .

[0092] 2. Coupling components

[0093] Add 2000ml of water to the small coupling reaction tank, add 50g of sodium carbonate, add 55g of acetic acid under stirring, adjust the pH=6.5-7, add 20g of acetoacetanilide and 37g of p-sulfonic acid acetoacetanilide, and stir for 60 minutes to obtain the pigment Coupling components for derivatives.

[0094] Reaction equation Ar'-...

example 3

[0102] 【Example 3】Pigment derivative II

[0103] Pigment Derivative II was synthesized by the following method:

[0104] 1. Diazotized components

[0105] Add 500ml of water and 30g of hydrochloric acid into a small diazotization reaction tank, add 35g of 3,3-dichlorobenzidine under stirring, and disperse and stir for 60 minutes. Add ice to the small diazotization reaction tank to cool down, the temperature is -5-0°C, add 20g of sodium nitrite to carry out diazotization reaction until the starch potassium iodide test paper is slightly blue, and stir for 60 minutes to obtain a pigment derivative diazonium salt solution.

[0106] 2. Coupling components

[0107] Add 2000ml of water to the small coupling reaction tank, add 20g of sodium hydroxide solution, add 19g of o-methyl acetoacetanilide, then add 40g of p-sulfonic acid acetoacetanilide, dissolve until the solution is transparent, add 50g of acetic acid under stirring , adjust the pH=6-7, and stir for 60 minutes to obtain ...

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Abstract

The invention provides a pigment derivative, a pigment for polyurethane ink and a preparation method of pigment derivative and pigment for polyurethane ink. The technical problem that organic pigmentprepared by the prior method has larger viscosity after being added into environment-friendly polyurethane printing ink is solved by means of the preparation method. The preparation method of the pigment derivative includes the steps of: 1, adding water and hydrochloric acid into 3,3-sodium hydroxide under stirring, and then adding sodium nitrite for diazotization reaction until starch potassium iodide test paper is slightly blue; 2, adding an aromatic amine compound, and a sulfonic acid group compound into water and sodium hydroxide for acid precipitation by using acetic acid to adjust pH value, or adding acetic acid into water and sodium carbonate to adjust pH, and then adding the aromatic amine compound and the sulfonic acid group compound; and 3, adding the solution obtained in the step 1 into the solution obtained in the step 2 to obtain the pigment derivative. The preparation method of the pigment for the polyurethane ink comprises the following steps of: respectively preparing adiazo solution and coupling components; adding a hue adjusting agent into the coupling components to obtain orange-red paste; adding the diazo solution into the orange-red paste to obtain yellow color paste; and post-processing.

Description

technical field [0001] The invention relates to the field of pigment production for polyurethane ink, in particular to a pigment derivative and a preparation method thereof, a pigment for polyurethane ink and a preparation method thereof, especially organic pigment yellow 13 and a preparation method thereof. Background technique [0002] In recent years, my country's organic pigment industry has focused on scientific and technological innovation and emphasized the concept of "green development". China is not only a big producer of organic pigments, but also gradually becomes a big country in the application of organic pigments. The application of pigments has penetrated into various fields of people's lives. With the construction of material and spiritual civilization, the voice of green environmental protection printing is increasing day by day, and the demand for environmentally friendly polyurethane ink is increasing day by day. The United States, Japan and domestic large i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B35/20C09B67/20C09D11/037C09D11/102
CPCC09B35/20C09B67/006C09D11/037C09D11/102
Inventor 李秀梅季维王赫王建闫永海
Owner LONGKOU UNION CHEM
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