Preparation method of flame retardant for polyethylene glycol terephthalate spinning

A technology for spinning polyethylene terephthalate and ethylene phthalate, which is applied in the field of flame retardants and can solve the problems that flame-retardant polyester fibers need to be further improved.

Inactive Publication Date: 2020-07-07
尹星星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-droplet and smoke suppression properties of flame-retardant polyester fibers still need to be further improved.

Method used

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  • Preparation method of flame retardant for polyethylene glycol terephthalate spinning
  • Preparation method of flame retardant for polyethylene glycol terephthalate spinning
  • Preparation method of flame retardant for polyethylene glycol terephthalate spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 is equipped with agitator, thermometer and condenser in dry reactor. Stir 100kg of aminopropyltriethoxysilane and 200kg of phenylglycidyl ether at a speed of 500r / min until they are evenly dispersed, heat to 80°C, and react for 12h in a nitrogen atmosphere, then add 2% anhydrous aluminum chloride, and then Add 150kg of dimethyl methylphosphonate, react at 150°C for 15h, and distill under reduced pressure at 100°C for 5h to obtain a flame retardant, see figure 1 shown.

Embodiment 2

[0028] Embodiment 2 is equipped with stirrer, thermometer and condensing tube in dry reactor. Stir 100kg of aminopropyltriethoxysilane and 500kg of phenylglycidyl ether at 600r / min until uniformly dispersed, heat to 80°C, react for 12h in a nitrogen atmosphere, then add 2% anhydrous aluminum chloride, and then Add 150 kg of dimethyl methylphosphonate, react at 150°C for 15 hours, and distill under reduced pressure at 100°C for 5 hours to obtain a flame retardant.

Embodiment 3

[0029] Embodiment 3 is equipped with stirrer, thermometer and condensing tube in dry reactor. Stir 100kg of aminopropyltriethoxysilane and 600kg of phenylglycidyl ether at 800r / min until they are uniformly dispersed, heat to 80°C, react for 12h in a nitrogen atmosphere, then add 2% anhydrous aluminum chloride, and then Add 150 kg of dimethyl methylphosphonate, react at 150°C for 15 hours, and distill under reduced pressure at 100°C for 5 hours to obtain a flame retardant.

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Abstract

The invention relates to a preparation method of a flame retardant for polyethylene glycol terephthalate spinning, which comprises the following steps: stirring aminopropyltriethoxysilane and phenyl glycidyl ether until the aminopropyltriethoxysilane and phenyl glycidyl ether are uniformly dispersed, heating to 60-110 DEG C in a nitrogen atmosphere, and reacting for 12-24 hours to obtain a prepolymer; and sequentially adding anhydrous aluminum chloride and dimethyl methylphosphonate into the prepolymer in a stirring state, reacting for 10-24 hours at the temperature of 70-150 DEG C, and carrying out reduced pressure distillation for 5-10 hours at the temperature of 70-150 DEG C to obtain the flame retardant for polyethylene glycol terephthalate spinning. The method has good adaptability topigments, is wide in application field, and has a good application and development prospect. The flame-retardant polyester fiber is large in molecular weight, good in flame-retardant durability, resistant to high-temperature decomposition and resistant to water washing. No waste solvent or waste gas is discharged during preparation, impurity elements are not introduced, production equipment is simplified, process equipment is simple, investment cost is low, and the method is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of flame retardants, in particular to a method for preparing a flame retardant for polyethylene terephthalate spinning. Background technique [0002] Flame-retardant polyester has been industrialized as early as the 1980s, and the phosphorus-based flame-retardant monomer developed by Celanese in the mid-1990s was successfully used in traditional textiles. Companies such as DuPont, Hearst, and Toyobo have successively realized the industrialization of flame-retardant polyester fibers by using organic and inorganic flame retardants and compound flame-retardant systems, and adopting copolymerization and blending methods. Toray Fiber Research Institute (China) Co., Ltd. has produced cationic dyeable flame-retardant polyester fibers through the combination of copolymerization and blending. The flame-retardant polyester obtained by the copolymerization method of BASF in Germany can be used to produce fibers. Ital Match Ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/335C08G65/26D01F1/07D01F6/92
CPCC08G65/2639C08G65/3355D01F1/07D01F6/92
Inventor 陈鹏鹏刘大鹏尹星星
Owner 尹星星
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