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Stilbene triazine fluorescent whitening agent and preparation method thereof

A technology of stilbene triazine and fluorescent whitening agent, which is applied in the direction of styrene-based dyes, chemical instruments and methods, luminescent materials, etc., can solve the problems of poor whitening effect and high cost, reduce the amount of addition, and reduce production Cost, high whitening strength effect

Active Publication Date: 2015-01-07
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

[0003] The present invention mainly aims at the problems of poor whitening effect and high cost of existing fluorescent whitening agents, and provides a diphenylethylene triazine fluorescent whitening agent and a preparation method thereof

Method used

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  • Stilbene triazine fluorescent whitening agent and preparation method thereof
  • Stilbene triazine fluorescent whitening agent and preparation method thereof
  • Stilbene triazine fluorescent whitening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Present embodiment fluorescent whitening agent is prepared by following method:

[0044] (1) Weigh 18.45 g of raw materials cyanuric chloride, 18.5 g of 4,4'-diaminostilbene-2,2'-disulfonic acid, 7.67 g of aniline, 3.51 g of m-chloroaniline, and 12.6 g of diethanolamine;

[0045] (2) 168g of soda ash solution with a mass percentage of 10% was added to the reaction container, 18.5g of 4,4'-diaminostilbene-2,2'-disulfonic acid was added to the container solution, and stirred evenly to obtain 4, An aqueous solution of 4'-diaminostilbene-2,2'-sodium disulfonate, and then use 10% soda ash solution to adjust the pH value of the solution to 7-7.5;

[0046] (3) Add 369g of 0°C ice water into the reaction vessel, add 0.5g of emulsifier PEG-400 into the reaction vessel, start the agitator and stir for 1 to 2 minutes, then add 18.45g of cyanuric chloride, stir and beat for 60 minutes, then Add the aqueous solution of 4,4'-diaminostilbene-2,2'-sodium disulfonate into the reaction ...

Embodiment 2

[0060] The preparation method of present embodiment fluorescent whitening agent is:

[0061] (1) Weigh 18.45 g of raw materials cyanuric chloride, 18.5 g of 4,4'-diaminostilbene-2,2'-disulfonic acid, 7.67 g of aniline, 3.51 g of m-chloroaniline, and 12.6 g of diethanolamine;

[0062] (2) 168g of soda ash solution with a mass percentage of 10% was added to the reaction container, 18.5g of 4,4'-diaminostilbene-2,2'-disulfonic acid was added to the container solution, and stirred evenly to obtain 4, An aqueous solution of 4'-diaminostilbene-2,2'-sodium disulfonate, and then use 10% soda ash solution to adjust the pH value of the solution to 7-7.5;

[0063] (3) Add 369g of 0°C ice water into the reaction vessel, add 0.5g of emulsifier PEG-400 into the reaction vessel, start the agitator and stir for 1 to 2 minutes, then add 18.45g of cyanuric chloride, stir and beat for 65 minutes, then Add the aqueous solution of 4,4'-diaminostilbene-2,2'-sodium disulfonate into the reaction ves...

Embodiment 3

[0077] The preparation method of this implementation fluorescent whitening agent is:

[0078] (1) Weigh 18.45 g of raw materials cyanuric chloride, 18.5 g of 4,4'-diaminostilbene-2,2'-disulfonic acid, 7.67 g of aniline, 3.51 g of m-chloroaniline, and 12.6 g of diethanolamine;

[0079] (2) Add 168g of 10% soda ash solution into the reaction vessel, add 18.5g of 4,4'-diaminostilbene-2,2'-disulfonic acid into the reaction vessel, stir evenly to obtain 4, An aqueous solution of 4'-diaminostilbene-2,2'-sodium disulfonate, and then use 10% soda ash solution to adjust the pH value of the solution to 7-7.5;

[0080] (3) Add 369g of 0°C ice water into the reaction vessel, add 0.5g of emulsifier PEG-400 into the reaction vessel, start the agitator and stir for 1-2 minutes, then add 18.45g of cyanuric chloride, stir and beat for 70 minutes, then Add the aqueous solution of 4,4'-diaminostilbene-2,2'-sodium disulfonate into the reaction vessel at a constant speed within 2 hours, and at th...

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Abstract

The invention belongs to the technical field of a fluorescent whitening agent and a preparation method thereof, and particularly relates to a special stilbene bis-triazine fluorescent whitening agent for detergents and a preparation method thereof. The special stilbene bis-triazine fluorescent whitening agent for detergents mainly solves the problems of poor whitening effect and high cost in the existing fluorescent whitening agent. The technical scheme is as follows: the preparation method of the stilbene triazine fluorescent whitening agent comprises the following steps: (1) weighing raw materials; (2) preparing a product IV; (4) uniformly mixing aniline and meta-chloroaniline, and adding the product IV in the step (3) to obtain products V, VI and VII; (5) preparing a composition of I, II and III; (6) carrying out acid precipitation; (7) drying; and (8) preparing the stilbene triazine fluorescent whitening agent. The stilbene triazine fluorescent whitening agent has the advantages of favorable whitening effect, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of fluorescent whitening agents and preparation methods thereof, and in particular relates to a stilbene bistriazine fluorescent whitening agent for detergents and a preparation method thereof. Background technique [0002] At present, the main varieties of fluorescent whitening agents used for detergent whitening in the detergent industry are: CI fluorescent whitening agent 31#, CI fluorescent whitening agent 71#, CI fluorescent whitening agent 351#. From the use effect, CI fluorescent whitening agent 351# is the best, CI fluorescent whitening agent 71# is the second, CI fluorescent whitening agent 31# is the worst, CI fluorescent whitening agent 351# (E value 1105---1181 ) whitening effect is 2.3 times that of CI fluorescent whitening agent 71# (E value 370), and 2.7 times that of CI fluorescent whitening agent 31# (E value 370). From the point of view of the use effect, it is difficult for any kind of wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C09K11/06C11D3/42C11D7/54C09B23/14
Inventor 董晋兴杜江锋
Owner 山西青山化工有限公司
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