Terminal hydroxyl organic nitrogen-sulfur-contained ester, preparation method thereof and flame-retardant Dacron manufactured by the same

A flame-retardant polyester and hydroxyl-terminated technology, which is applied in the field of flame-retardant polyester fabrics, can solve the problems of environmental pollution during the preparation process, difficulties in storage and use, and the content of small functional elements, and achieve the goal of overcoming easy migration, environmental protection, and good synergy The effect of action

Inactive Publication Date: 2017-06-06
HAITAI TEXTILE SUZHOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of traditional liquid esters such as difficulties in storage and use, environmental pollution during the preparation process, low content of functional elements, and low molecular weight, and to prepare a product with less pollution in the preparation process, high content of functional elements, and low molecular weight. High solid type hydroxyl-terminated organic nitrogen-containing thioester compound

Method used

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  • Terminal hydroxyl organic nitrogen-sulfur-contained ester, preparation method thereof and flame-retardant Dacron manufactured by the same
  • Terminal hydroxyl organic nitrogen-sulfur-contained ester, preparation method thereof and flame-retardant Dacron manufactured by the same
  • Terminal hydroxyl organic nitrogen-sulfur-contained ester, preparation method thereof and flame-retardant Dacron manufactured by the same

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A preparation method of hydroxyl-terminated organic nitrogen-containing thioester compound, the steps are as follows:

[0048] 1) Mix side group nitrogen-containing dicarboxylic acid and pentaerythritol in a molar ratio of 4:1, carry out melt esterification reaction under argon protection and mechanical stirring, the stirring speed of mechanical stirring is 300rpm, melt esterification reaction The temperature is 180°C, and the reaction time is 1h. After the reaction, the product is collected, dissolved, filtered and dried to obtain DAPER whose end group is carboxyl group. The structural formula of side group nitrogen-containing dicarboxylic acid is:

[0049]

[0050] 2) Mix organic nitrogen-sulfur dicarboxylic acid and ethylene glycol at a molar ratio of 1:2, add 4-methylbenzenesulfonic acid, organic nitrogen-sulfur dicarboxylic acid and 4-methylbenzenesulfonic acid The molar ratio of the acid is 1:0.01, the melt condensation reaction is carried out under the conditi...

Embodiment 2

[0062] A preparation method of hydroxyl-terminated organic nitrogen-containing thioester compound, the steps are as follows:

[0063] 1) Mix side group nitrogen-containing dicarboxylic acid and pentaerythritol in a molar ratio of 4:1, carry out melt esterification reaction under argon protection and mechanical stirring, the stirring speed of mechanical stirring is 350rpm, melt esterification reaction The temperature is 185°C, and the reaction time is 1h. After the reaction, the product is collected, dissolved, filtered and dried to obtain DAPER whose end group is carboxyl group. The structural formula of side group nitrogen-containing dicarboxylic acid is:

[0064]

[0065] 2) Mix the organic nitrogen-sulfur dicarboxylic acid and propylene glycol at a molar ratio of 1:2, add 4-methylbenzenesulfonic acid, the mixture of organic nitrogen-sulfur dicarboxylic acid and 4-methylbenzenesulfonic acid The molar ratio is 1:0.01, the melt condensation reaction is carried out under the...

Embodiment 3

[0077] A preparation method of hydroxyl-terminated organic nitrogen-containing thioester compound, the steps are as follows:

[0078] 1) Mix side group nitrogen-containing dicarboxylic acid and pentaerythritol in a molar ratio of 4:1, carry out melt esterification reaction under argon protection and mechanical stirring, the stirring speed of mechanical stirring is 400rpm, melt esterification reaction The temperature is 190°C, and the reaction time is 2 hours. After the reaction, the product is collected, dissolved, filtered and dried to obtain DAPER with a carboxyl group at the end. The structural formula of the side nitrogen-containing dicarboxylic acid is:

[0079]

[0080] 2) Mix organic nitrogen-sulfur dicarboxylic acid and 1,4-butanediol at a molar ratio of 1:2, add 4-methylbenzenesulfonic acid, organic nitrogen-sulfur dicarboxylic acid and 4- The molar ratio of toluenesulfonic acid is 1:0.01, the melt condensation reaction is carried out under the conditions of nitrog...

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Abstract

The invention relates to terminal hydroxyl organic nitrogen-sulfur-contained ester, a preparation method thereof and flame-retardant Dacron manufactured by the same. The preparation method comprises the steps of firstly obtaining DAPER with a terminal group as carboxyl through reaction between lateral-group nitrogen-contained dicarboxylic acid and pentaerythritol, then obtaining DADA with a terminal group as hydroxyl through reaction between organic nitrogen-sulfur-contained dicarboxylic acid and dihydric alcohol and finally obtaining a finished product through reaction between the DAPER and the DADA. The finished product is high-molecular-weight solid ester; a molecular terminal group is hydroxyl; the finished product contains 12.9 to 14.67wt% of nitrogen and sulfur; the finished product has the advantages of high thermal stability, wide application and the like and overcomes the defects that traditional liquid ester is difficult to store and use and has single application due to a simple structure and environmental pollution in a preparation process. The finished product can serve as flame retardant to be applied to preparing flame-retardant Dacron, the flame-retardant Dacron has good flame-retardant performance, and limit oxygen index of the flam-retardant Dacron is larger than or equal to 31%.

Description

technical field [0001] The invention belongs to the field of flame retardants, and relates to a hydroxyl-terminated organic nitrogen-containing thioester compound, a preparation method thereof and a flame-retardant polyester fabric prepared therefrom, in particular to a solid hydroxyl-terminated organic nitrogen-containing thioester compound and It is a melt condensation preparation method based on the difference in the reactivity of the multifunctional groups of the reactants. Background technique [0002] With the development of my country's synthetic material industry and the continuous expansion of application fields, it has been widely used in various fields such as chemical building materials, electronic appliances, transportation, aerospace, daily furniture, interior decoration, basic necessities of life, etc. But most of them are flammable materials, which are easy to cause fire and pose a great threat to life and property safety. Therefore, the flame retardancy of ...

Claims

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Application Information

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IPC IPC(8): C08G63/688C08G63/685D01F1/07D01F6/92D03D15/12D03D13/00D03D15/283D03D15/513
CPCD01F1/07D01F6/92D03D13/008C08G63/685C08G63/688D10B2331/04D03D15/513
Inventor 沈黎孙宾承婷婷相恒学朱美芳周哲
Owner HAITAI TEXTILE SUZHOU
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