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Flame-retardant low-melting point polyester and preparation method thereof

A technology of low melting point polyester and flame retardant, applied in the field of polyester production, can solve the problems of limitation, no flame retardant performance, easy combustion of products, etc., and achieve the effect of reducing production cost, improving product strength, and excellent flame retardant performance.

Inactive Publication Date: 2017-09-08
厦门翔鹭化纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem with all the above patented products. The products are easy to burn and have no flame retardant performance. The application in fire-resistant and flame-retardant fields such as sunshade cloth, wall cloth, and automotive interiors is limited.

Method used

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  • Flame-retardant low-melting point polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 3.572Kg of terephthalic acid, 1.428Kg of isophthalic acid, 0.375Kg of flame retardant, 3.242Kg of ethylene glycol, 0.012g of tetrabutyl titanate, and 0.013g of orthophosphoric acid into a 20L polymerization kettle, and start the agitator to run at 50HZ Stir, after 10 minutes, fill the reactor with nitrogen to replace the air in the reactor, start to heat up, when the temperature in the reactor rises to 200°C, start to take esterification water, keep the temperature at the top of the tower at 95~98°C, continue to slowly raise the temperature until 238°C Maintain the internal temperature, and when the amount of esterification water reaches the theoretically calculated value, the esterification is complete, and the calculation formula for the outflow of esterification water is: amount of esterification water (kg) = total moles of acid components in the reaction system × 36 × 98%;

[0026] Then the agitator is lowered to 35HZ to run stirring and filled with nitrogen with...

Embodiment 2

[0028] Add 3.704Kg of terephthalic acid, 1.296Kg of isophthalic acid, 0.455Kg of flame retardant, 3.548Kg of ethylene glycol, 0.012g of tetrabutyl titanate, and 0.013g of orthophosphoric acid into a 20L polymerization kettle, and start the agitator to run at 50HZ Stir, after 10 minutes, fill the reactor with nitrogen to replace the air in the reactor, start to heat up, when the temperature in the reactor rises to 200°C, start to take esterification water, keep the temperature at the top of the tower at 95~98°C, continue to slowly raise the temperature until 238°C Maintain the internal temperature, and when the amount of esterification water reaches the theoretically calculated value, the esterification is complete, and the calculation formula for the outflow of esterification water is: amount of esterification water (kg) = total moles of acid components in the reaction system × 36 × 98%;

[0029] Then the agitator is lowered to 35HZ to run and stir, and nitrogen is filled with ...

Embodiment 3

[0031] Add 3.846Kg of terephthalic acid, 1.154Kg of isophthalic acid, 0.400Kg of flame retardant, 3.548Kg of ethylene glycol, 0.013g of tetrabutyl titanate, and 0.013g of orthophosphoric acid into a 20L polymerization kettle, and start the agitator to run at 50HZ Stir, after 10 minutes, fill the reactor with nitrogen to replace the air in the reactor, start to heat up, when the temperature in the reactor rises to 200°C, start to take esterification water, keep the temperature at the top of the tower at 95~98°C, continue to slowly raise the temperature until 238°C Maintain the internal temperature, and when the amount of esterification water reaches the theoretically calculated value, the esterification is complete, and the calculation formula for the outflow of esterification water is: amount of esterification water (kg) = total moles of acid components in the reaction system × 36 × 98%;

[0032]Then the agitator is lowered to 35HZ to run and stir, and nitrogen is filled with a...

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Abstract

The invention discloses flame-retardant low-melting point polyester and a preparation method thereof. The preparation method comprises an esterification reaction stage and a polycondensation reaction stage, wherein in the esterification reaction stage, terephthalic acid, isophthalic acid, a flame retardant, glycol, tetrabutyl titanate and orthophosphoric acid are used as raw materials, and a homogeneous slurry is prepared and added into an esterification kettle for an esterification reaction; in the polycondensation reaction stage, a mixture of diethylene glycol and pentaerythritol, a compound auxiliary agent and a catalyst are added, reaction is completed in a reaction kettle, and flame-retardant low-melting point polyester granules are obtained after cast strip discharging, underwater cutting, cooling, conveying, drying and packaging. The flame-retardant low-melting point polyester is low in manufacturing cost and excellent in product performance, is suitable for spinning and has excellent flame retardance.

Description

technical field [0001] The invention belongs to the technical field of polyester production, and in particular relates to a flame-retardant low-melting polyester suitable for spinning and a preparation method thereof. Background technique [0002] Low melting point polyester is widely used in the production of 3D shoe uppers, curtains, chenille yarns, woven collars, ribbons, trouser cuffs, Bondi threads, badminton racket threads, tennis racket threads, inner linings, automobiles, and nonwovens. Due to the simple processing method and low energy consumption, it can replace adhesives in most fields. Compared with adhesives, it has excellent properties such as fast bonding, high strength, non-toxic, non-polluting and reusable, and has a broad application prospect. [0003] The low-melting-point polyester used for hot-melt fiber filaments requires not only low melting point and good bonding performance, but also good spinnability and good processing and quality performance for d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/85C08G63/668C08G63/672C08K5/098C08K5/526C08K5/134C08K5/20C08K5/5313D01F6/92D01F1/07
CPCC08G63/668C08G63/672C08G63/85C08K5/098C08K5/1345C08K5/20C08K5/526C08K5/5313D01F1/07D01F6/92
Inventor 刘志麟刘龙敏田艳艳吴铁城刘建煌郑铮陈茶娇
Owner 厦门翔鹭化纤股份有限公司
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