Unlock instant, AI-driven research and patent intelligence for your innovation.

Tetrasulfonic acid type liquid fluorescent brightener composition and synthesis and applications thereof

A technology of fluorescent whitening agent and tetrasulfonic acid, which is applied in the direction of luminescent/fluorescent substance addition, luminescent materials, bleaching products, etc., can solve the problems of low whiteness of paper, dark paper surface, insufficient reactivity, etc.

Inactive Publication Date: 2014-12-24
旭泰(太仓)新材料科技有限公司
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, fluorescent whitening agent is prepared by condensation of cyanuric chloride, 4,4'-diaminostilbene-2,2'-disulfonic acid, sodium p-aminobenzenesulfonate and diethanolamine. The whiteness of the whitening agent applied to the paper is not high, the shade is blue light, the surface of the paper is dark, and the reactivity is not high enough.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tetrasulfonic acid type liquid fluorescent brightener composition and synthesis and applications thereof
  • Tetrasulfonic acid type liquid fluorescent brightener composition and synthesis and applications thereof
  • Tetrasulfonic acid type liquid fluorescent brightener composition and synthesis and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A tetrasulfonic acid liquid fluorescent whitening agent composition, including three kinds of tetrasulfonic acid liquid fluorescent whitening agents I, II, and III, the structures are as follows:

[0029]

[0030]

[0031] Synthesis of the above-mentioned tetrasulfonic acid liquid optical brightener composition:

[0032] The first step of condensation:

[0033] Add 100g of deionized water, 100g of ice and 15g of cyanuric chloride into a 1000ml four-neck flask, keep the temperature at 0°C, stir for 10 minutes, and disperse evenly; then add 14g of p-aminobenzenesulfonic acid, and slowly add 4.3g of Sodium carbonate, control the pH at 6, react for 1 hour;

[0034] Add 3g m-aminobenzenesulfonic acid and 4.27g sodium carbonate in reaction system, react 1 hour;

[0035] The second step of condensation:

[0036] Raise the temperature to 35°C, add 15g of 4,4'-, diaminostilbene-2,2'-disulfonic acid and 4.3g of sodium carbonate to the reaction system, and add the two alt...

Embodiment 2

[0049] An application of the above-mentioned tetrasulfonic acid liquid fluorescent whitening agent composition is used for fluorescent whitening of pulp during papermaking, the pH value is kept at 9, and the dosage is 1.5% of the pulp weight.

Embodiment 3

[0051] An application of the above-mentioned tetrasulfonic acid liquid fluorescent whitening agent composition is used for fluorescent whitening of pulp during papermaking, the pH value is kept at 6, and the dosage is 0.10% of the pulp weight.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a tetrasulfonic acid type liquid fluorescent brightener composition and synthesis and applications thereof. The synthesis of the tetrasulfonic acid type liquid fluorescent brightener composition comprises the following steps: first-step condensation: reacting cyanuric chloride with sodium p-aminobenzene sulfonate and sodium m-aminobenzene sulfonate to obtain a one-step condensation mixture; performing second-step condensation reaction to the one-step condensation mixture and 4,4'-diamino-2,2'-stilbenedisulfonic acid, to obtain a two-step condensation mixture; reacting the two-step condensation mixture with diethanol amine, filtering after the reaction is completed, and concentrating to obtain the liquid tetrasulfonic acid type liquid fluorescent brightener composition. The fluorescence intensity of the tetrasulfonic acid type liquid fluorescent brightener composition is obviously improved, the colored light of the tetrasulfonic acid type liquid fluorescent brightener composition is obviously improved, the tetrasulfonic acid type liquid fluorescent brightener composition is high in whiteness, transparent in appearance and good in normal-temperature stability, can be stored for longer time, and is convenient to use, and non-toxic and non-corrosive during a transportation process.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a tetrasulfonic acid liquid fluorescent whitening agent composition and its synthesis and application. Background technique [0002] Fluorescent whitening agent has the effect of brightening and brightening, and is widely used in the fields of papermaking, textiles, plastics, coatings, synthetic detergents and leather. Among them, triazine-based aminostilbene fluorescent whitening agents are widely used in the fields of papermaking, printing and dyeing, and detergents due to their high cost performance. [0003] In the prior art, fluorescent whitening agent is prepared by condensation of cyanuric chloride, 4,4'-diaminostilbene-2,2'-disulfonic acid, sodium p-aminobenzenesulfonate and diethanolamine. The whitening agent applied to the paper is not high in whiteness, the shade is blue light, the surface of the paper is dark, and the reactivity is not high enough. Contents ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09B67/22C09B23/14C09K11/06D21H21/30D06L3/12D06L4/65
Inventor 陈青山钱静亚程云霞
Owner 旭泰(太仓)新材料科技有限公司