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A kind of high temperature resistant mixed dispersant nno/mf and its production process

A production process and dispersant technology, applied in the direction of organic dyes, etc., can solve the problems of poor dispersion performance at high temperature, inability to apply light-colored dyes, canceration, etc.

Active Publication Date: 2017-01-18
江阴市盛通化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the high-temperature dispersion performance of the dispersant NNO produced at home and abroad is poor, the color is light but not high-temperature resistant, and the heat-resistant stability is around 80°C; while the heat-resistant stability of the dispersant MF reaches 130°C 4-5 grades, but It is a brown powder and cannot be used for the dispersion of light colored dyes
In addition, industrial washing oil, industrial methylbenzene and industrial naphthalene contain heterocyclic compounds such as pyridine, quinoline and indole. The MF and NNO produced from this raw material also inevitably contain quinoline, etc., and the fabric contains Quinoline can cause cancer in the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The production steps of embodiment 1 are: put 400kg of refined naphthalene and 160kg of methylnaphthalene into the reactor, heat to 80°C to dissolve and stir for half an hour (the melting point of naphthalene at normal pressure is 80.5°C, and the melting point of methylnaphthalene at normal temperature and pressure is colorless oily liquid), add 92kg of 20% (mass percent concentration) dilute sulfuric acid, let stand to take the upper oil phase; heat the mixture to 110°C in the sulfonation reactor, add 600kg of 98% concentrated sulfuric acid dropwise, after the dropwise addition Heat up to 135-138°C for sulfonation reaction, keep it warm for 4 hours, cool down to 120°C for water washing, and then further cool down to 85°C to obtain a mixed sulfonation product; add 37% formaldehyde solution dropwise to the sulfonation product, heat up Incubate at 120°C for 3 hours for condensation reaction, then add 30% sodium hydroxide solution to the reactant to neutralize the pH to 1-2...

Embodiment 2

[0025] Example 2 selects industrial naphthalene as a raw material: 430 kg of industrial naphthalene (93% by mass of naphthalene) and 160 kg of methyl naphthalene are put into a reactor, heated to 80° C., dissolved and stirred for half an hour (the melting point of naphthalene under normal pressure is 80.5°C, methylnaphthalene is a colorless oily liquid at normal temperature and pressure), add 92kg of 20% (mass percent concentration) dilute sulfuric acid, let stand to take the upper oil phase; heat the mixture to 110°C in the sulfonation reactor Add 600kg of 98% concentrated sulfuric acid, after the dropwise addition, heat up to 125°C for sulfonation reaction, keep warm for 3 hours, cool down to 120°C for water washing, and then further cool down to 85°C to obtain mixed sulfonation products; 37% formaldehyde solution Add it dropwise to the sulfonated product, raise the temperature to 120°C and keep it warm for 3 hours to carry out the condensation reaction, then add 30% sodium h...

Embodiment 3

[0027] The difference between embodiment 3 and embodiment 2 is that the sulfonation temperature is increased and the reaction time is reduced.

[0028] Put 430kg of industrial naphthalene (the mass percentage of naphthalene is 93%) and 160kg of methylnaphthalene into the reactor, heat to 80°C to dissolve and stir for half an hour (the melting point of naphthalene at normal pressure is 80.5°C, and the melting point of methylnaphthalene at normal temperature and pressure The bottom is a colorless oily liquid), add 92kg of 20% (mass percent concentration) dilute sulfuric acid, let it stand to take the upper oil phase; heat the mixture to 110°C in the sulfonation reactor, add 600kg of 98% concentrated sulfuric acid dropwise, and add After completion, heat up to 145°C for sulfonation reaction, keep warm for 3 hours, cool down to 120°C for water washing, and then further cool down to 85°C to obtain mixed sulfonation product; add 37% formaldehyde solution dropwise to the sulfonation p...

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PUM

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Abstract

The invention discloses a high-temperature-resistant mixed dispersant NNO / MF and a production process thereof. The high-temperature-resistant mixed dispersant comprises the following components in percentage by weight: 20-25% of sodium methylene bis-methyl naphthalene sulfonate and 75-80% of sodium methylene bis-naphthalene sulfonate. The production process of the high-temperature-resistant mixed dispersant NNO / MF comprises four steps: refining; sulfonating; condensing; and neutralizing. The high-temperature-resistant mixed dispersant NNO / MF disclosed by the invention does not contain heterocyclic compounds such as quinoline and the like and is light color and excellent in heat-resistant stability, and is particularly suitable for light color dyes which need to be dispersed at high temperature.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a production process of a high-temperature-resistant mixed dispersant NNO / MF. Background technique [0002] Dispersant NNO sodium methylene bis-naphthalene sulfonate, mainly used as a dispersant in disperse dyes, vat dyes, reactive dyes, acid dyes and leather dyes, with excellent grinding effect, solubilization and dispersibility; it can also be used in textile printing and dyeing, Wettable pesticides as dispersants, dispersants for papermaking, electroplating additives, water-soluble paints, pigment dispersants, water treatment agents, carbon black dispersants, etc. Dispersant NNO is mainly used in industry for vat dye suspension pad dyeing, leuco acid dyeing, disperse and soluble vat dye dyeing, etc. It can also be used for dyeing silk / wool interwoven fabrics, so that there is no color on the silk. Dispersant NNO is mainly used in the dye industry as a diffusion aid for dispersi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/00
Inventor 蒋江
Owner 江阴市盛通化工有限公司