Cotton reaction type phosphorus-nitrogen-sulfur synergistic flame retardant preparation method

A synergistic flame retardant, reactive technology, applied in flame retardant fibers, chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, etc.

Inactive Publication Date: 2019-07-26
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic and foreign patents and documents have not yet reported the preparation method of the reactive phosphorus-nitrogen-sulfur synergistic flame r

Method used

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  • Cotton reaction type phosphorus-nitrogen-sulfur synergistic flame retardant preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) Add 9.22g (0.05mol) of cyanuric chloride to a three-necked flask, add an appropriate amount of acetone as a solvent, dissolve 11.56g (0.05mol) of p-aminobenzenesulfonic acid sodium salt in an appropriate amount of distilled water, and use an iron stand to The three-necked flask containing the cyanuric chloride solution was fixed in an ice-water bath, and the sodium p-aminobenzenesulfonate solution was added dropwise into the three-necked flask, kept at 0°C and continuously stirred for reaction, and the pH was adjusted to 5-5 with 20% sodium carbonate aqueous solution. 6. The reaction was carried out for 1 hour, and the main product was dichloro-s-triazine-based sodium p-aminobenzenesulfonate (product A).

[0012] (2) Add 17.12g of product A into the three-necked flask, use distilled water as the solvent, stir evenly, and fix the three-necked flask in the warm water bath of the heat-collecting magnetic stirrer with an iron stand, set the temperature at 55°C, and then ...

Embodiment 2

[0019] (1) Add 5.53g (0.03mol) of cyanuric chloride to a three-necked flask, add an appropriate amount of acetone as a solvent, dissolve 6.94g (0.03mol) of sodium p-aminobenzenesulfonic acid in an appropriate amount of distilled water, and use an iron stand to The three-necked flask containing the cyanuric chloride solution was fixed in an ice-water bath, and the sodium p-aminobenzenesulfonate solution was added dropwise into the three-necked flask, kept at 0°C and continuously stirred for reaction, and the pH was adjusted to 5-5 with 20% sodium carbonate aqueous solution. 6. The reaction was carried out for 1 hour, and the main product was dichloro-s-triazine-based sodium p-aminobenzenesulfonate (product A).

[0020] (2) Add 10.27g of product A into the three-necked flask, use distilled water as the solvent, stir evenly, and fix the three-necked flask in the warm water bath of the heat-collecting magnetic stirrer with an iron stand, set the temperature at 55°C, and then put 4....

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Abstract

The invention relates to a cotton reaction type phosphorus-nitrogen-sulfur synergistic flame retardant preparation method. Dichloro-cyanuro sodium sulfanilate salt is added into a three-mouth flask, an appropriate amount of distilled water is poured into the three-mouth flask to serve as a solvent, the three-mouth flask is fixed into a warm water bath of a heat collection type magnetic stirrer byan iron support after uniform stirring, dimethyl hydroxy methylphosphonate water solution is dropwise added into the three-mouth flask, continuous stirring reaction is performed under a certain temperature and pH (potential of hydrogen) condition for 4 hours, and products are dried by condensation and further separated and purified to obtain reaction type phosphorus-nitrogen-sulfur synergistic flame retardants. The reaction type phosphorus-nitrogen-sulfur synergistic flame retardants can be applied to functional finishing of pure cotton fabrics, the cotton fabrics can achieve excellent flame resistance, and the flame retardants are novel functional additives.

Description

technical field [0001] The invention relates to a preparation method of a reactive phosphorus-nitrogen-sulfur synergistic flame retardant for cotton, which belongs to the technical field of development of new dyeing and finishing auxiliaries, can be used for functional finishing of cotton fabrics, and reacts with cotton fabrics to form covalent Bonding, thus endowing cotton fabric with flame retardant function. Background technique [0002] As a natural fiber, cotton fiber has outstanding wearing properties that various chemical fibers do not have, such as hydrophilicity, biocompatibility, and degradability. People are also more and more inclined to use this kind of natural textiles such as cotton fabrics. With the development of various weaving and finishing processes, cotton fabrics have become more and more widely used. Not only can they be made into underwear products that come into contact with the skin, but they can also be used as various decorative and outerwear pro...

Claims

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Application Information

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IPC IPC(8): C07F9/6521D06M13/447
CPCC07F9/6521D06M13/447D06M2101/06D06M2200/30
Inventor 董朝红朱平吕洲刘建
Owner QINGDAO UNIV
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