Water-soluble fluorescent whitening agent for coarse whiting powder as well as preparation method and application thereof

A technology of heavy calcium carbonate powder and fluorescent whitening agent, applied in the field of fluorescent whitening agent, can solve the problems of fluorescent whitening materials lacking heavy calcium carbonate powder, etc., and achieves strong ultraviolet absorption performance, good water solubility, Good fluidity and dispersion effect

Active Publication Date: 2017-05-10
HEZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are free calcium ions and hydroxyl groups on the surface of carbonic acid powder. It is difficult for the existing fluorescent whitening agent products on the market to effect

Method used

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  • Water-soluble fluorescent whitening agent for coarse whiting powder as well as preparation method and application thereof
  • Water-soluble fluorescent whitening agent for coarse whiting powder as well as preparation method and application thereof
  • Water-soluble fluorescent whitening agent for coarse whiting powder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] Add 20mmol of cyanuric chloride to 200mL of ice water, ice bath. Then 10mmol 4,4'-diaminostilbene-2,2'-disulfonic acid (DSD acid) and a mixture of 200mL distilled water (add 20mmol Na 2 CO 3 ), stir, 0~5℃, react for 2h. Raise the temperature to 30~40℃, add 20mmol Na 2 CO 3 . Then, 20mmol of tetradecyldimethyl tertiary amine and 10mL of dimethylformamide were added dropwise, and the temperature was controlled to react for 10h. Raise the temperature to 80~90℃, add 20mmol p-aminobenzenesulfonic acid, add 10% Na dropwise 2 CO 3 The solution maintains the pH of the system at 8-9, and the temperature is controlled to react for 8 hours. After cooling to room temperature, adding 60 g of sodium chloride, stirring, suction filtering, and vacuum drying to obtain a water-soluble heavy calcium carbonate powder fluorescent whitening agent with a yield of 90%.

Example Embodiment

[0035] Example 2

[0036] Add 19mmol of cyanuric chloride to 250mL of ice water, ice bath. Then 11mmol 4,4'-diaminostilbene-2,2'-disulfonic acid (DSD acid) and a mixture of 195mL distilled water (add 20mmol Na 2 CO 3 ), stir, 0~5℃, react for 2h. Raise the temperature to 30~40℃, add 20mmol Na 2 CO 3 . Then 21mmol of tetradecyldimethyl tertiary amine and 9mL of dimethylformamide were added dropwise, and the temperature was controlled to react for 10 hours. Raise the temperature to 80~90℃, add 22mmol p-aminobenzene sulfonic acid, add 10% Na dropwise 2 CO 3 The solution maintains the pH of the system at 8-9, and the temperature is controlled to react for 8 hours. After cooling to room temperature, adding 60 g of sodium chloride, stirring, suction filtration, and vacuum drying to obtain a water-soluble heavy calcium carbonate powder fluorescent whitening agent with a yield of 88%.

Example Embodiment

[0037] Example 3

[0038] 21mmol cyanuric chloride was added to 225mL ice water, and ice bath. Then 9mmol 4,4'-diaminostilbene-2,2'-disulfonic acid (DSD acid) and 205mL distilled water were added dropwise (add 20mmol Na 2 CO 3 ), stir, 0~5℃, react for 2h. Raise the temperature to 30~40℃, add 20mmol Na 2 CO 3 . Then, 18mmol of tetradecyldimethyl tertiary amine and 11mL of dimethylformamide were added dropwise, and the temperature was controlled to react for 10 hours. Raise the temperature to 80~90℃, add 18mmol p-aminobenzene sulfonic acid, add 10% Na dropwise 2 CO 3 The solution maintains the pH of the system at 8-9, and the temperature is controlled to react for 8 hours. After cooling to room temperature, adding 60 g of sodium chloride, stirring, suction filtration, and vacuum drying to obtain a water-soluble heavy calcium carbonate powder fluorescent whitening agent with a yield of 89%.

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Abstract

The invention discloses a water-soluble fluorescent whitening agent for coarse whiting powder. The water-soluble fluorescent whitening agent for the coarse whiting powder is of the following structural formula 1 as shown in the description. The invention aims at providing the water-soluble fluorescent whitening agent for the coarse whiting powder as well as a preparation method and application thereof; the method is simple; the prices of raw materials are low; a process is green and environment-friendly. By adopting the fluorescent whitening agent provided by the invention, calcium carbonate powder can be effectively whitened and brightened; the fluorescent whitening agent also has a surface modification effect at the same time.

Description

technical field [0001] The invention relates to the technical field of fluorescent whitening agents, in particular to a water-soluble heavy calcium carbonate powder fluorescent whitening agent and a preparation method and application thereof. 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 terms of ground calcium carbonate powder fluore...

Claims

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Application Information

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IPC IPC(8): C07D251/70C09K11/06C09C1/02C09C3/08
CPCC07D251/70C09C1/021C09C3/08C09K11/06C09K2211/1007C09K2211/1059
Inventor 画莉万茂生汤泉梁冬梅刘星
Owner HEZHOU UNIV
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