Synthesis and application of amphoteric acrylate quaternary ammonium salt fluorescent brightener

A fluorescent whitening agent and acrylate technology, which is applied in the field of fluorescent whitening agents, can solve the problems that fluorescent whitening agent products cannot meet the needs of industrial development, decrease in fluorescence and whitening efficiency, and poor light resistance, and achieve bonding firmness High, whitening paper, good weather resistance

Inactive Publication Date: 2018-01-19
HEZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, VBL is prone to photoisomerization, poor light resistance, reduced fluorescence and whitening efficiency, and other factors, so the application field is limited to varying degrees.
With the continuous development of our country and breakthrough achievements in scientific research, the existing fluorescent whitening agent products are far from meeting the needs of industrial development.

Method used

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  • Synthesis and application of amphoteric acrylate quaternary ammonium salt fluorescent brightener
  • Synthesis and application of amphoteric acrylate quaternary ammonium salt fluorescent brightener
  • Synthesis and application of amphoteric acrylate quaternary ammonium salt fluorescent brightener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 20.5mmol cyanuric chloride to 250mL ice water and place in ice bath. Then 10mmol 4,4'-diaminostilbene-2,2'-disulfonic acid (DSD acid) and 200mL distilled water, Na 2 CO 3 The mixture was stirred at 0°C and reacted for 2h. Add 20mmol aniline, raise the temperature to 35°C, add dropwise 10% Na 2 CO 3 The aqueous solution maintained the pH of the system at 6, and the temperature was controlled for 6 hours. Then dropwise add 22mmol of diethylamino ethyl methacrylate and 11mL of acetone mixture, raise the temperature to 90°C, add dropwise 10% Na 2 CO 3 The aqueous solution maintains the pH of the system at 9, and the temperature is controlled for 10 hours. The endpoint of the three-step reaction was monitored by thin-layer chromatography. Cool to room temperature, add 60 g of sodium chloride, stir, filter with suction, and dry in vacuum to obtain an amphoteric acrylate quaternary ammonium salt fluorescent whitening agent with a yield of 88.5%.

Embodiment 2

[0032] Add 20.5mmol cyanuric chloride to 250mL ice water and place in ice bath. Then 10mmol 4,4'-diaminostilbene-2,2'-disulfonic acid (DSD acid) and 200mL distilled water, Na 2 CO 3 The mixture was stirred at 3°C ​​for 1.5h. Add 20mmol aniline, raise the temperature to 40°C, add dropwise 10% Na 2 CO 3 The aqueous solution maintained the pH of the system at 7, and the temperature was controlled for 5 hours. Then dropwise add 22mmol of diethylamino ethyl methacrylate and 11mL of acetone mixture, raise the temperature to 80°C, add dropwise 10% Na 2 CO 3 The aqueous solution maintained the pH of the system at 8, and the temperature was controlled for 9 hours. The endpoint of the three-step reaction was monitored by thin-layer chromatography. Cool to room temperature, add 60 g of sodium chloride, stir, filter with suction, and dry in vacuum to obtain an amphoteric acrylate quaternary ammonium fluorescent whitening agent with a yield of 85%.

Embodiment 3

[0034] Add 20.5mmol cyanuric chloride to 250mL ice water and place in ice bath. Then 10mmol 4,4'-diaminostilbene-2,2'-disulfonic acid (DSD acid) and 200mL distilled water, Na 2 CO 3 The mixture was stirred and reacted at 5°C for 2h. Add 20mmol aniline, raise the temperature to 37°C, add dropwise 10% Na 2 CO 3 The aqueous solution maintained the pH of the system at 6.5, and the temperature was controlled for 5.5 hours. Then dropwise add 22mmol of diethylamino ethyl methacrylate and 11mL of acetone mixture, raise the temperature to 85°C, add dropwise 10% Na 2 CO 3 The aqueous solution maintained the pH of the system at 8.5, and the temperature was controlled for 10 hours. The endpoint of the three-step reaction was monitored by thin-layer chromatography. Cool to room temperature, add 60g of sodium chloride, stir, filter with suction, and dry in vacuum to obtain an amphoteric acrylate quaternary ammonium salt fluorescent whitening agent with a yield of 87%.

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Abstract

The invention provides synthesis and application of an amphoteric acrylate quaternary ammonium salt fluorescent brightener. The amphoteric acrylate quaternary ammonium salt fluorescent brightener is characterized in that a structural formula of the amphoteric acrylate quaternary ammonium salt fluorescent brightener is a formula I (shown in the description). The invention aims at providing the synthesis and the application of the amphoteric acrylate quaternary ammonium salt fluorescent brightener. A synthesis method is simple; raw materials are low in price; a technology is green and environmentally friendly. Paper treated by adopting the amphoteric acrylate quaternary ammonium salt fluorescent brightener has a higher whiteness value; the amphoteric acrylate quaternary ammonium salt fluorescent brightener is a novel high-performance fluorescent brightener.

Description

technical field [0001] The invention relates to the technical field of fluorescent whitening agents, in particular to the synthesis and application of an amphoteric acrylate quaternary ammonium salt fluorescent whitening agent. Background technique [0002] In my country's "12th Five-Year" new material development plan, the development of new materials that are coordinated with resources and the environment is taken as the main assessment index, and the problem of resource shortage is solved through the development of new materials. my country has formed a relatively complete material science and technology system, and has obvious resource advantages and technological advantages in some new material fields, but the overall independent innovation capability is still relatively weak, and there are still relatively few new material products and technologies with independent intellectual property rights. Especially in the innovation of high-performance optical brighteners. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/70C09K11/06C09B23/14C09B23/10D21H21/30
Inventor 画莉万茂生周永啸
Owner HEZHOU UNIV
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