Water-soluble fluorescent whitening agent and preparation method thereof

A fluorescent whitening agent and water-soluble technology, which is applied in the field of fluorescent whitening agents, can solve the problems of unstable storage and poor water solubility of fluorescent whitening agents, and achieve the effect of high solubility and good system stability

Active Publication Date: 2021-02-26
湖北海汇化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary to provide a water-soluble fluorescent whitening agent and its preparation method to solve the technical problems of poor water solubility and unstable storage of existing fluorescent whitening agents in the prior art

Method used

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  • Water-soluble fluorescent whitening agent and preparation method thereof
  • Water-soluble fluorescent whitening agent and preparation method thereof
  • Water-soluble fluorescent whitening agent and preparation method thereof

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preparation example Construction

[0013] The first aspect of the present invention provides a kind of preparation method of water-soluble fluorescent whitening agent, comprises the steps:

[0014] S1: After mixing the distyrene biphenyl type fluorescent whitening agent dye, sodium alkylbenzene sulfonate, fatty alcohol polyoxyethylene ether and polyethylene glycol, grind until the particle size is ≦20 μm to obtain the first mixture;

[0015] S2: Add polyhydric alcohol to the above first mixture, and obtain the second mixture after fully dissolving;

[0016] S3: Add deionized water to the above second mixture, and mix uniformly to obtain a water-soluble fluorescent whitening agent.

[0017] The method of the invention can stably disperse the distyryl biphenyl type fluorescent whitening agent dye in the deionized water, and the distyryl biphenyl type fluorescent whitening agent dye in the formed system has high solubility and good system stability.

[0018] In the above step S1, the fineness of the first mixture...

Embodiment 1

[0028] (1) After mixing stilbene biphenyl type fluorescent whitening agent dye, sodium cetylbenzenesulfonate, AEO-9 and PEG-2000, grind until the particle size is ≦20 μm to obtain the first mixture;

[0029] (2) Add ethylene glycol to the above-mentioned first mixture, after ultrasonic dissolution, obtain the second mixture;

[0030] (3) Adding deionized water to the above second mixture, and ultrasonically dispersing to obtain a water-soluble fluorescent whitening agent.

[0031] In this example, stilbene biphenyl type fluorescent whitening agent dye: sodium hexadecylbenzene sulfonate: AEO-9: PEG-2000: ethylene glycol: deionized water = 1: 0.08: 0.3: 0.25: 0.3:0.6.

Embodiment 2

[0033] (1) After mixing the stilbene biphenyl type fluorescent whitening agent dye, sodium hexadecylbenzene sulfonate, AEO-9 and PEG-1000, grind until the particle size is ≦20 μm to obtain the first mixture;

[0034] (2) Add propylene glycol to the first mixture, and after ultrasonic dissolution, obtain the second mixture;

[0035] (3) Adding deionized water to the above second mixture, and ultrasonically dispersing to obtain a water-soluble fluorescent whitening agent.

[0036] In this example, stilbene biphenyl type fluorescent whitening agent dye: sodium hexadecylbenzene sulfonate: AEO-9: PEG-1000: propylene glycol: deionized water = 1: 0.05: 0.25: 0.3: 0.4: 0.7.

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Abstract

The invention discloses a preparation method of a water-soluble fluorescent whitening agent, which comprises the following steps: mixing stilbene biphenyl fluorescent whitening agent dye, sodium alkylbenzene sulfonate, fatty alcohol-polyoxyethylene ether and polyethylene glycol, and grinding the mixture until the particle fineness is less than or equal to 20 mu m to obtain a first mixture; addingpolyol into the first mixture, and fully dissolving the polyol to obtain a second mixture; and adding deionized water into the second mixture, and uniformly mixing all the components to obtain the water-soluble fluorescent whitening agent. According to the method disclosed by the invention, the stilbene biphenyl type fluorescent whitening agent dye can be stably dispersed in the deionized water,so that the solubility of the stilbene biphenyl type fluorescent whitening agent dye in a formed system is high, and the stability of the system is good.

Description

technical field [0001] The invention relates to the technical field of fluorescent whitening agents, in particular to a water-soluble fluorescent whitening agent and a preparation method thereof. Background technique [0002] Fluorescent whitening agent is an industrial organic dye with complex optical structure, which can absorb ultraviolet light and emit visible blue light to enhance the whiteness and brightness of objects, so it is widely used in textile, paper, household detergent and plastic industries. [0003] Fluorescent whitening agents can be divided into stilbene type, coumarin type, pyrazoline type, benzoxazole type and phthalamide type according to their chemical structure. Among them, the stilbene-biphenyl fluorescent whitening agent is the most commonly used fluorescent whitening agent in the current chemical industry, and it has good solubility and dispersibility. At present, it is dissolved into a certain concentration solution with hot water when used. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/46C09K11/02C09K11/06
CPCC09B67/0084C09K11/06C09K11/025C09K2211/1007
Inventor 郑玲陈卫文史华威周琪
Owner 湖北海汇化工科技有限公司
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