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Preparation technique of solvent red 179

A production process, solvent red technology, applied in the production process field of solvent red 179, can solve the problems of increased production cost, poor product quality, difficulty in recycling, etc., and achieve the effects of cost reduction, less emissions, and production cost savings

Active Publication Date: 2008-08-27
南通龙翊新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This process produces solvent red 179, and the reaction yield is low, about 90%. Alcohol and glacial acetic acid are not easy to recycle and apply mechanically. , resulting in a waste of resources and pollution to the environment

Method used

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  • Preparation technique of solvent red 179
  • Preparation technique of solvent red 179
  • Preparation technique of solvent red 179

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described:

[0022] 1. Synthesis: pump glacial acetic acid 10-15 times the total weight of the raw materials into the reactor, start stirring, put in the raw material 1,8-naphthalene anhydride, and then add the raw material 1,8-diaminonaphthalene, 1,8 - The molar ratio of naphthalene anhydride and 1,8-diaminonaphthalene consumption is input at 1: 1.01, and then add the auxiliary agent Kao A-60 (chemical name: ammonium molybdate) whose consumption is 1-1.5‰ of the total weight of raw materials, and the injection is completed Seal the cover, open the water inlet and outlet valves of the condenser, heat up the steam entering the jacket, and raise the temperature to 110-116°C in about 1 hour, keep it in the reflux state for 10-15 hours, after the heat preservation is over, cool it down to 35-45°C, and maintain it for 10- After 20 minutes, the maintenance ended, and the bottom valve of the ...

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Abstract

The invention discloses a solvent red179 processing technique in the chemical engineering domain, which comprises the following steps: compounding; filtering; washing; distilling, wherein the processing technique uses glacial acetic acid as solvent; the filtrate after distilling can be recycled, which reduces the cost.

Description

technical field [0001] The invention relates to a production process of solvent red 179, which belongs to the field of chemical industry. Background technique [0002] Solvent Red 179, English name Solvent Red 179, molecular formula: C 22 h 12 N 2 O, can be used for pre-spinning coloring of plastics, various resins and fibers, and its solubility is better than that of transparent red EG. C.I. Dyestuff index number: SolventRed 179 C.I.564150 Shade: yellow light red, its characteristics: transparent red oil-soluble dye with yellow light, excellent heat resistance, light resistance and migration resistance, high tinting strength, wide application range. Uses: It can be used for pre-spinning coloring of plastics, various resins and fibers, and its solubility is better than that of transparent red EG. Its structural formula is: [0003] [0004] At present, the usual process for producing Solvent Red 179 is: first pump water, alcohol, and glacial acetic acid (the weight r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B57/00C07C251/30D06P1/90C08J3/20
Inventor 杨连飞茅志宏王思源
Owner 南通龙翊新材料科技有限公司