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A kind of brown vat dye taking naphthalene tetracarboxylic acid as raw material, preparation method and application

A technology of naphthalene tetracarboxylic acid and dyes, which is applied in the field of preparation of naphthalene tetracarboxylic acid vat dyes, which can solve the problems of failing to meet customer requirements and large color difference of dyes, and achieve the effects of reducing the discharge of three wastes, moderate color power, and reducing consumption

Active Publication Date: 2020-07-24
鞍山辉虹颜料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dye has problems such as large color difference and failure to meet customer requirements.

Method used

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  • A kind of brown vat dye taking naphthalene tetracarboxylic acid as raw material, preparation method and application
  • A kind of brown vat dye taking naphthalene tetracarboxylic acid as raw material, preparation method and application
  • A kind of brown vat dye taking naphthalene tetracarboxylic acid as raw material, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A brown vat dye using naphthalene tetracarboxylic acid as a raw material, including two compounds shown in the following formulas (I) and (II):

[0041]

[0042] The preparation method of described brown vat dye comprises the steps:

[0043] Add 65 parts of water into the reaction vessel, add 9 parts of glacial acetic acid as a catalyst under stirring, the volume concentration of acetic acid in the system is 12.2%, then add 9 parts of 1,4,5,8-naphthalene tetracarboxylic acid and 10 parts of 4-formaldehyde Oxygen-1,2-o-phenylenediamine, closed reactor, heating up to 134°C, pressure 0.2MPa, heat preservation and pressure stirring for 6 hours, cooling down to 80°C, filtering while hot, and then using 90°C hot water to decompose the filter cake Washing to neutrality, the filter cake was dried and pulverized to obtain 16 parts of reddish-brown powder; wherein, the mass ratio of 1,4,5,8-naphthalene tetracarboxylic acid and 4-methoxy-1,2-o-phenylenediamine for 9:10.

[00...

Embodiment 2

[0053] A brown vat dye using naphthalene tetracarboxylic acid as a raw material, which includes compounds shown in the following formulas (I) and (II):

[0054]

[0055]

[0056] The preparation method of described brown vat dye comprises the steps:

[0057] Add 65 parts of water into the reaction vessel, add 9 parts of glacial acetic acid as a catalyst under stirring, the volume concentration of acetic acid in the system is 12.2%, then add 9 parts of 1,4,5,8-naphthalene tetracarboxylic acid and 9 parts of 4-formaldehyde Oxygen-1,2-o-phenylenediamine, closed reactor, heating up to 134°C, pressure 0.2MPa, heat preservation and pressure stirring for 6 hours, cooling down to 80°C, filtering while hot, and then using 90°C hot water to decompose the filter cake Washing to neutrality, the filter cake was dried and pulverized to obtain 16 parts of reddish-brown powder; wherein, the mass ratio of 1,4,5,8-naphthalene tetracarboxylic acid and 4-methoxy-1,2-o-phenylenediamine It i...

Embodiment 3

[0060] A brown vat dye using naphthalene tetracarboxylic acid as a raw material, which includes compounds shown in the following formulas (I) and (II):

[0061]

[0062] The preparation method of described brown vat dye comprises the steps:

[0063] Add 65 parts of water into the reaction vessel, add 9 parts of glacial acetic acid as a catalyst under stirring, the volume concentration of acetic acid in the system is 12.2%, then add 9 parts of 1,4,5,8-naphthalene tetracarboxylic acid and 10 parts of 4-formaldehyde Oxygen-1,2-o-phenylenediamine, closed reactor, temperature raised to 134°C, pressure 1.0MPa, heat preservation and pressure stirring for 6 hours, cooling to 80°C, filtering while hot, and then using 90°C hot water to filter cake Washing to neutrality, the filter cake was dried and pulverized to obtain 16 parts of reddish-brown powder; wherein, the mass ratio of 1,4,5,8-naphthalene tetracarboxylic acid and 4-methoxy-1,2-o-phenylenediamine for 9:10.

[0064] The di...

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Abstract

The invention belongs to the technical field of naphthalene tetracarboxylic acid vat dye preparation, and particularly relates to a brown vat dye taking naphthalene tetracarboxylic acid as a raw material, and a preparation method and an application of the brown vat dye. The brown vat dye comprises two compounds. The brown vat dye is a brown vat dye with a new structure, provides a new color matching scheme for commercial dyes, and enriches the selectable range of brown primary dyes and commercial brown dyes; moreover, according to the commercial dye containing the brown vat dye with the new structure, the brown vat dye is mixed with vat red 14 and vat red 15 / vat orange 7 with similar structures, a prepared dye is small in color difference and has the dye uptake reaching up to 98%, the color fastness is good, and the light fastness can reach the sixth level.

Description

technical field [0001] The invention belongs to the technical field of preparation of naphthalene tetracarboxylic acid vat dyes, and in particular relates to a brown vat dye using naphthalene tetracarboxylic acid as a raw material, a preparation method and an application. Background technique [0002] Vat dyes refer to the dyes that are reduced under alkaline conditions to color the fibers, and then oxidized to return to the original insoluble dyes on the fibers. [0003] Classic vat dyes Vat Orange 7 ([CAS: 4426-06-0] and Vat Red 15 ([CAS: 4216-02-8]) are high-end vat dyes that have been successfully developed and commercialized earlier, and are mostly used for dyeing cotton fibers And printing. The appearance of reduced orange 7 is orange-red powder, insoluble in water and general organic solvents, orange-yellow when dissolved in concentrated sulfuric acid, and blue solution after reduction with alkaline hydrosulfuric acid solution. Good affinity for cotton fibers, Dyeing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B57/12C09B67/28C07D471/22D06P1/22D06P3/60
CPCC07B2200/09C07D471/22C09B57/12C09B67/0034C09B67/0066C09B67/0077D06P1/227D06P3/6025
Inventor 孙东洲魏继武金肇岩
Owner 鞍山辉虹颜料科技有限公司
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