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2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified high-efficient water reducing agent

A dye intermediate and high-efficiency water reducer technology, applied in the field of water reducer production, can solve the problems of high production cost, easy bleeding, low application level, etc., and achieve good product workability, no three wastes discharge, and a short reaction cycle short effect

Inactive Publication Date: 2017-12-01
邵启明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing sulfamic acid-based high-efficiency water reducers on the market have high production costs, are prone to bleeding, and have low practical application levels.

Method used

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  • 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified high-efficient water reducing agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified high-efficiency water reducer, comprising the following raw materials in parts by weight: 70 parts of sodium aminobenzenesulfonate, 58 parts of phenol, water 40 parts, 92 parts of formaldehyde, 16 parts of acrylic acid, 5 parts of sodium hydroxide, 160 parts of 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid.

[0023] Its preparation method comprises the following steps:

[0024] (1) Dissolving and filtering: add an appropriate amount of water to the reaction kettle, then add sodium sulfanilate and phenol respectively, raise the temperature of the reaction kettle to 85-92°C, and stir for 1 hour;

[0025] (2) Addition: Slowly add sodium hydroxide to the reaction kettle to adjust the pH of the solution to 7.6-8.2;

[0026] (3) Polycondensation: raise the temperature of the reactor to 90-95°C, slowly add formaldehyde dropwise to it, so that the formaldehyde will be dropped w...

Embodiment 2

[0030] A 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified high-efficiency water reducer, including the following raw materials in parts by weight: 65 parts of sodium aminobenzenesulfonate, 65 parts of phenol, and 20 parts of water 100 parts of formaldehyde, 15 parts of acrylic acid, 40 parts of sodium hydroxide, 150 parts of 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid.

[0031] Its preparation method comprises the following steps:

[0032] (1) Dissolving and filtering: add an appropriate amount of water to the reaction kettle, then add sodium sulfanilate and phenol respectively, raise the temperature of the reaction kettle to 85-92°C, and stir for 2 hours;

[0033] (2) Addition: Slowly add sodium hydroxide to the reaction kettle to adjust the pH of the solution to 7.6-8.2;

[0034] (3) Polycondensation: raise the temperature of the reactor to 90-95°C, slowly add formaldehyde dropwise to it, so that the formaldehyde will be d...

Embodiment 3

[0038] A 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified high-efficiency water reducer, including the following raw materials in parts by weight: 75 parts of sodium aminobenzenesulfonate, 62 parts of phenol, and 100 parts of water 98 parts, 98 parts of formaldehyde, 18 parts of acrylic acid, 35 parts of sodium hydroxide, 240 parts of 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid.

[0039] Its preparation method comprises the following steps:

[0040] (1) Dissolving and filtering: Add an appropriate amount of water to the reaction kettle, then add sodium sulfanil and phenol respectively, raise the temperature of the reaction kettle to 85-92°C, and stir for 1.5 hours;

[0041] (2) Addition: Slowly add sodium hydroxide to the reaction kettle to adjust the pH of the solution to 7.6-8.2;

[0042] (3) Polycondensation: raise the temperature of the reactor to 90-95°C, slowly add formaldehyde dropwise to it, so that the formaldehyde ...

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Abstract

The invention relates to the technical field of water reducing agent production, and specifically relates to a 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified high-efficient water reducing agent. The water reducing agent comprises the following raw materials in parts by weight: 65-80 parts of sodium sulfanilate, 55-65 parts of phenol, 20-120 parts of water, 90-100 parts of formaldehyde, 15-20 parts of acrylic acid, 0-40 parts of sodium hydroxide and 150-250 parts of a 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid. The 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid is used to prepare the high-efficient water reducing agent with a high added value, so that waste use is realized and a convenient economical 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified aminosulfonic acid high-efficient water reducing agent also can be obtained. The high-efficient water reducing agent has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of water reducer production, in particular to a 2-amino-4-nitrophenol-6-sulfonic acid dye intermediate waste liquid modified high-efficiency water reducer. Background technique [0002] 2-Amino-4-nitrophenol-6-sulfonic acid is used in the manufacture of M-type reactive dyes and acid dyes, such as acid yellow 99#, red 184#, brown 145#, acid medium orange 4#, 29#, green 26#, brown 19#, 21# and other dye intermediates. The organic matter in the production wastewater is rich in types, the COD content is high, and the wastewater treatment is difficult. [0003] Water reducer is an admixture that can reduce the amount of mixing water while maintaining the fluidity of concrete basically the same. It is the most widely researched and used concrete admixture at present. Adding water reducing agent during use can improve the workability and fluidity of freshly mixed concrete, increase the strength of concrete, and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/04C08G14/14C04B24/22C04B103/30
CPCC08G14/04C04B24/226C04B2103/302C08G14/14
Inventor 邵启明
Owner 邵启明
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