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A kind of tetrasulfonic acid amphoteric fluorescent whitening agent and preparation method thereof

A technology of fluorescent whitening agent and tetrasulfonic acid, applied in chemical instruments and methods, luminescent materials, styrene-based dyes, etc., can solve the problems of poor water solubility and narrow application range of solid dosage forms, and achieve good water solubility and whitening Good effect, solve the effect of polluting the environment

Active Publication Date: 2015-09-30
山西青山化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of narrow application range and poor water solubility of solid dosage forms existing in existing fluorescent whitening agents, and provide a tetrasulfonic acid amphoteric fluorescent whitening agent and its preparation method

Method used

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  • A kind of tetrasulfonic acid amphoteric fluorescent whitening agent and preparation method thereof
  • A kind of tetrasulfonic acid amphoteric fluorescent whitening agent and preparation method thereof
  • A kind of tetrasulfonic acid amphoteric fluorescent whitening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The tetrasulfonic acid amphoteric fluorescent whitening agent prepared by the present embodiment is chemically synthesized by cyanuric chloride, p-diethanolaminobenzenesulfonic acid, 4,4'-diaminostilbene-disulfonic acid and triethanolamine , which is mainly composed of compounds represented by the following structural formula, and its structural formula (A) is:

[0022]

[0023] Above-mentioned tetrasulfonic acid amphoteric fluorescent whitening agent, its preparation method is:

[0024] 1) take by weighing raw material cyanuric chloride 400kg, p-diethanolaminobenzenesulfonic acid 566kg, 4,4`-diaminostilbene-disulfonic acid 396kg and triethanolamine 388kg;

[0025] 2) First add 8000kg of 0°C ice water into the reaction vessel, add hydrochloric acid to adjust the pH value to 1-2, then add 400kg of cyanuric chloride into the reaction vessel, stir and beat evenly, and at a temperature of 0-5°C, add 566kg Diethanolaminobenzenesulfonic acid, then add 10% sodium carbonate...

Embodiment 2

[0031] The tetrasulfonic acid amphoteric fluorescent whitening agent prepared by the present embodiment is composed of cyanuric chloride, p-diethanolaminobenzenesulfonic acid, 4,4'-diaminostilbene-disulfonic acid and N-ethyldiethanolamine Chemically synthesized, it is mainly composed of compounds represented by the following structural formula, and its structural formula (B) is:

[0032]

[0033] Above-mentioned tetrasulfonic acid amphoteric fluorescent whitening agent, its preparation method is:

[0034] 1) take by weighing raw material cyanuric chloride 400kg, p-diethanolaminobenzenesulfonic acid 566kg, 4,4`-diaminostilbene-disulfonic acid 396kg and N-ethyldiethanolamine 346kg;

[0035] 2) First add 8000kg of 0°C ice water into the reaction vessel, add hydrochloric acid to adjust the pH value to 1-2, then add 400kg of cyanuric chloride into the reaction vessel, stir and beat evenly, and at a temperature of 0-5°C, add 566kg Diethanolaminobenzenesulfonic acid, then add 10%...

Embodiment 3

[0041] The tetrasulfonic acid amphoteric fluorescent whitening agent prepared by the present embodiment is composed of cyanuric chloride, p-diethanolaminobenzenesulfonic acid, 4,4'-diaminostilbene-disulfonic acid, N-ethyldiethanolamine It is chemically synthesized with triethanolamine, and it is mainly composed of the following structural formula (C) and the compounds represented by the above structural formulas (A) and (B), wherein the structural formula (C) is:

[0042]

[0043] Above-mentioned tetrasulfonic acid amphoteric fluorescent whitening agent, its preparation method is:

[0044] 1) Take by weighing raw material cyanuric chloride 400kg, p-diethanolaminobenzenesulfonic acid 566kg, 4,4 `-diaminostilbene-disulfonic acid 396kg, N-ethyldiethanolamine 173kg and triethanolamine 194kg.

[0045] 2) First add 8000kg of 0°C ice water into the reaction vessel, add hydrochloric acid to adjust the pH value to 1-2, then add 400kg of cyanuric chloride into the reaction vessel, stir...

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Abstract

The invention relates to an amphoteric tetra-sulfonate fluorescent whitening agent and a preparation method thereof and aims to solve the technical problems of narrow application range and poor solid agent water solubility existing in the traditional fluorescent whitening agent. The technical scheme is as follows: the amphoteric tetra-sulfonate fluorescent whitening agent is mainly composed of one or more compounds and is prepared from cyanuric chloride, p-diethylamino benzenesulfonic acid, 4,4'-diamino stilbene-disulfonic acid and a tertiary amine compound according to the weight ratio of 1:1:0.5:1.2 through chemical synthesis. The preparation method comprises the steps: firstly, adding the cyanuric chloride and the p-diethylamino benzenesulfonic acid into ice water to react; then, adding a sodium salt solution of the 4,4'-diamino stilbene-disulfonic acid into a reaction liquid; next, adding the tertiary amine compound into the reaction liquid to react; and finally, desalting and adding auxiliaries to obtain a liquid product. The liquid product is sprayed under pressure and dried to obtain a solid product. The fluorescent whitening agent prepared by the invention can be used under neutral, acidic and alkaline conditions and cannot pollute the environment when being used.

Description

technical field [0001] The invention belongs to a fluorescent whitening agent and a preparation method thereof, in particular to a tetrasulfonic acid amphoteric fluorescent whitening agent and a preparation method thereof. technical background [0002] Fluorescent whitening agent has the effect of brightening and brightening, and is widely used in the fields of papermaking, textiles, plastics, coatings, synthetic detergents and leather. Among them, triazine-based aminostilbene fluorescent whitening agents are widely used in the fields of papermaking, printing and dyeing, and detergents due to their high cost performance. However, the commonly used products of this type are anionic in nature, and the scope of application is limited. They are only suitable for alkaline and neutral environments. Under cationic systems, fluorescence quenching and material precipitation will occur, resulting in the product not being used normally. Fluorescent whitening agents in powder dosage fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B23/14C09K11/06
Inventor 吕立宏季东峰王真祥杜江峰薛红波
Owner 山西青山化工有限公司
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