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Preparation method of high-light-resistance type fluorescent whitening agent

A fluorescent whitening agent and light-resistant technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of poor whitening effect and poor light fastness, and achieve enhanced reflectivity, improved light resistance, and improved light resistance. Effect

Inactive Publication Date: 2018-02-09
王若梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of a high-light fastness fluorescent whitening agent in view of the defect that the current common whitening agent has poor light fastness and poor whitening effect

Method used

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  • Preparation method of high-light-resistance type fluorescent whitening agent

Examples

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Effect test

example 1

[0021] In parts by weight, add 16 parts of diethylenetriamine and 10 parts of distilled water to a four-necked flask equipped with a reflux condenser, thermometer and stirrer, mix and stir for 4 minutes, then add 6 parts of adipic acid and 4 parts by mass fraction 15% sodium hydroxide solution, continue to stir for 10 minutes, after the automatic exothermic end, heat up to 160°C and stir for 6 minutes, until the reaction temperature drops to 120°C, continue to add 5 parts of distilled water to obtain a self-made polyamide solution, Weigh 4g of cyanuric chloride and add it to 16mL of acetone, mix and stir for 8 minutes, add 16g of DSD acid and 3mL of 15% sodium hydroxide solution after stirring, continue to react for 20min, and control the reaction temperature to 3°C. 20% sodium carbonate solution adjusted the pH of the reaction solution to 7, and heated to 8°C, then added 4mL of aniline, then heated to 45°C, added dropwise 5mL of diethanolamine and 12mL of self-made polyamide s...

example 2

[0023] In parts by weight, add 18 parts of diethylenetriamine and 11 parts of distilled water to a four-necked flask equipped with a reflux condenser, thermometer and stirrer, mix and stir for 5 minutes, then add 7 parts of adipic acid and 5 parts by mass fraction 15% sodium hydroxide solution, continue to stir for 11 minutes, after the automatic exothermic end, heat up to 170°C and stir for 7 minutes, until the reaction temperature drops to 130°C, continue to add 6 parts of distilled water to obtain a self-made polyamide solution, Weigh 5g of cyanuric chloride and add it to 18mL of acetone, mix and stir for 9 minutes, add 18g of DSD acid and 4mL of sodium hydroxide solution with a mass fraction of 15% after stirring, continue to react for 25min, and control the reaction temperature to 4°C. 20% sodium carbonate solution adjusted the pH of the reaction solution to 7, and heated to 9°C, then added 5mL of aniline, then heated to 55°C, added dropwise 6mL of diethanolamine and 14mL ...

example 3

[0025]In parts by weight, add 20 parts of diethylenetriamine and 12 parts of distilled water to a four-necked flask equipped with a reflux condenser, a thermometer and a stirrer, mix and stir for 6 minutes, then add 8 parts of adipic acid and 6 parts by mass fraction 15% sodium hydroxide solution, continue to stir for 12 minutes, after the automatic exothermic end, heat up to 180°C and stir for 8 minutes, until the reaction temperature drops to 140°C, continue to add 7 parts of distilled water to obtain a self-made polyamide solution, Weigh 6g of cyanuric chloride and add it to 20mL of acetone, mix and stir for 10min, add 20gDSD acid and 5mL of 15% sodium hydroxide solution after stirring, continue to react for 30min, and control the reaction temperature to 5°C. 20% sodium carbonate solution adjusted the pH of the reaction solution to 9, and heated to 10°C, then added 6mL of aniline, then heated to 65°C, added dropwise 7mL of diethanolamine and 16mL of self-made polyamide solut...

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Abstract

The invention discloses a preparation method of a high-light-resistance type fluorescent whitening agent, and belongs to the technical field of preparation of a whitening agent. Diethylenetriamine, distilled water and adipic acid react under the condition of a catalyst to obtain a self-made polyamide solution, a fluorescent whitening agent obtained via mixed reaction of cyanuric chloride, acetone,DSD acid and aniline is modified, the fluorescent whitening agent generally contains a conjugated double bond, adhesive such as corn modified starch and polyvinyl alcohol is added in a conjugated double bond system, the surface of the material is smeared with the fluorescent whitening agent, visible purple blue fluorescence is emitted under solar radiation, the intensity of reflected light exceeds the intensity of visible light projected on an object, and whitening and brightening perception is given to people; a color compensation principle is utilized, the reflected high-intensity purple blue fluorescence and yellow light on a white object are mutually compensated, and the treated object is whiter, brighter and more vivid, so that the whitening effect is achieved, the light resistance of the material is further improved and wide use prospect is achieved.

Description

technical field [0001] The invention discloses a preparation method of a high-light-resistant fluorescent whitening agent, which belongs to the technical field of whitening agent preparation. Background technique [0002] Brighteners are a class of organic compounds that can improve the whiteness of fabrics and paper. Also known as optical brightener, fluorescent whitening agent. Fabrics, etc. are often yellow due to colored impurities. In the past, chemical bleaching was used for decolorization, and the method of adding brighteners to products was adopted. [0003] The function of the whitening agent is to convert the invisible ultraviolet radiation absorbed by the product into purple-blue fluorescent radiation, which complements the original yellow light radiation to become white light, and improves the whiteness of the product under sunlight. Brighteners have been widely used in textiles, paper, washing powder, soap, rubber, plastics, pigments and paints. [0004] The ...

Claims

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Application Information

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IPC IPC(8): C09K11/02C08G69/48
CPCC09K11/02C08G69/48
Inventor 王若梅杨立军陈莉莉
Owner 王若梅
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