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Preparation method of novel flame retardant for cotton

A flame retardant, a new type of technology, applied in the field of new printing and dyeing auxiliaries, to achieve the effect of improving durability

Inactive Publication Date: 2013-08-28
吴江宏达线绳有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, domestic and foreign patents and documents have not yet reported the preparation method of the flame retardant for phosphite cotton containing s-triazine active groups involved in the present invention, and this flame retardant has wide application value and prospects in textile finishing.

Method used

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  • Preparation method of novel flame retardant for cotton
  • Preparation method of novel flame retardant for cotton
  • Preparation method of novel flame retardant for cotton

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Synthetic of monoethanolamine phosphite: first 82g (1mol) phosphorous acid is joined in the reaction container that has water separation reflux device, then the ethanolamine solution of 61g (1mol) is slowly added dropwise, stirs at room temperature, then 1 g (0.01 mol) of concentrated sulfuric acid (mass fraction 98%) was added dropwise as a catalyst for the esterification reaction, stirred at room temperature for 10 minutes, and then reacted at 160° C. for 6 hours with an oil bath as a heating medium. After the reaction was finished, 91 g of viscous yellow liquid product monoethanolamine phosphite was obtained, with a yield of 72.8%.

[0022] (2) Synthesis of phosphite containing s-triazine active group: 63g (0.5mol) monoethanolamine phosphite is dissolved in 150mL (0.1mol) mass fraction of 6% sodium carbonate aqueous solution, the solution is placed Stir in the ice bath until uniform, then add 92g (0.5mol) cyanuric chloride in the reaction vessel, stir and react i...

Embodiment 2

[0029] (1) Synthesis of monoethanolamine phosphite: first add 99g (1.2mol) of phosphorous acid into a reaction vessel with a water separation and reflux device, then slowly add 73g (1.2mol) of ethanolamine solution dropwise, and stir evenly at room temperature , then dropwise added 2.4g (0.024mol) of concentrated sulfuric acid (mass fraction 98%) as a catalyst for the esterification reaction, stirred at room temperature for 10 minutes, and then reacted at 160° C. for 6 hours with an oil bath as a heating medium. After the reaction was finished, 113 g of viscous yellow liquid product monoethanolamine phosphite was obtained, with a yield of 75.5%.

[0030] (2) Synthesis of phosphite containing s-triazine active group: 76g (0.6mol) monoethanolamine phosphite is dissolved in 180mL (0.12mol) mass fraction of 6% sodium carbonate aqueous solution, the solution is placed Stir in the ice bath until uniform, then add 110g (0.6mol) cyanuric chloride into the reaction vessel, stir and rea...

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Abstract

The invention relates to a preparation method of a novel flame retardant for cotton. The method comprises the following steps: phosphorous acid reacts with ethanol amine under the effect of a catalyst to obtain a thick yellow liquid product monoethanolamine phosphite; and monoethanolamine phosphite reacts with cyanuric chloride to obtain the flame retardant for cotton. By adopting the preparation method provided by the invention, the prepared flame retardant can form covalent bond combination with cotton fiber, and the durability of the flame retardant is improved; the strength and whiteness of the cotton fabric after finishing change a little, and the cotton fabric after finishing is free from the problem of formaldehyde release; and the prepared flame retardant is safe and environment-friendly and is a novel dyeing and finishing auxiliary.

Description

Technical field: [0001] The invention relates to a preparation method of a flame retardant for phosphite cotton containing s-triazine active groups, belongs to the technical field of novel printing and dyeing auxiliaries, and can be applied to flame-retardant finishing of cotton fabrics. Background technique: [0002] Most of the textiles currently used are flammable or combustible materials. Textiles are often the first fires that cause fires, and countless casualties and economic losses are caused by fires every year. How to reduce the danger of textile combustion, reduce the release of toxic and harmful gases when textiles are burned, and the safety and loss of life and property have attracted widespread attention and attention from all over the world. Cotton fabric has excellent moisture absorption, breathability and dyeability, and is widely used in clothing, bedding and decorative fabrics. It is an irreplaceable textile; but the limiting oxygen index of cotton fiber is...

Claims

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Application Information

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IPC IPC(8): C07F9/6521D06M13/453D06M101/06
Inventor 董朝红吕洲倪超朱平
Owner 吴江宏达线绳有限公司
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