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Antistatic polyester composition, preparation method thereof and polyester film

A composition and antistatic technology, which is applied in the field of polyester film, can solve the problems of poor antistatic property, poor dispersibility, and poor film transparency of polyester, and achieve excellent antistatic performance, improved dispersibility, and low humidity dependence Effect

Pending Publication Date: 2022-06-28
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the antistatic effect of secondary alkyl sulfonates does not require humidity conditions, the dispersibility of secondary alkyl sulfonates in polyester is very poor. If used alone, it will lead to the generation of foreign matter in polyester, and the transparency of the obtained film Poor performance and poor dispersion will also lead to poor antistatic properties of polyester as a whole

Method used

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  • Antistatic polyester composition, preparation method thereof and polyester film
  • Antistatic polyester composition, preparation method thereof and polyester film
  • Antistatic polyester composition, preparation method thereof and polyester film

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preparation example Construction

[0073] Another preparation method of the antistatic polyester composition disclosed in the present invention The specific steps of the blending method are as follows: the polyester chip and the secondary alkyl sulfonate shown in formula 1 are passed through a two-shaft kneader to obtain a polyester composition thing. The addition amount of the secondary alkyl sulfonate shown in Formula 1 is 0.05-10.00 wt % relative to the total amount of the polyester composition,

[0074] R 1 SO 3 M formula 1,

[0075] R in formula 1 1 is a secondary alkyl group with 8 to 22 carbon atoms, preferably a secondary alkyl group with 12 to 18 carbon atoms; M is an alkali metal Li, Na or K.

[0076] If the added amount of the secondary alkyl sulfonate shown in Formula 1 is less than 0.05 wt % relative to the total amount of the polyester composition, the sulfonic acid groups floating on the surface of the polyester are too few, and it is difficult to form a conductive path. There is no antistat...

Embodiment 1

[0121] The bishydroxyethyl terephthalate of 15kg was added to the esterification reaction tank, the temperature was maintained at 250°C, and the high-purity terephthalic acid of 8.0kg and the ethylene glycol slurry of 3.4kg were gradually added to the esterification reaction tank, The esterification reaction was carried out at 245° C. while water was flowing out to obtain an esterification reaction product. Then, the esterification reaction product obtained above was transferred into the polymerization reaction tank under heating at 250° C. through a transfer pipe connecting the esterification reaction tank and the polymerization reaction tank. After the transfer was completed, the mixture was stirred at 250°C for 5 minutes. After that, the polymerization catalyst antimony trioxide (AO) equivalent to 84 ppm of the total polyester was added, and after stirring for 5 minutes, diethylene glycol isophthalate-5-sulfonic acid equivalent to 0.10 wt% of the total polyester was added ...

Embodiment 2

[0125] The bishydroxyethyl terephthalate of 15kg was added to the esterification reaction tank, the temperature was maintained at 250°C, and the high-purity terephthalic acid of 8.0kg and the ethylene glycol slurry of 3.4kg were gradually added to the esterification reaction tank, The esterification reaction was carried out at 245° C. while water was flowing out to obtain an esterification reaction product. Then, the esterification reaction product obtained above was transferred into the polymerization reaction tank under heating at 250° C. through a transfer pipe connecting the esterification reaction tank and the polymerization reaction tank. After the transfer was completed, the mixture was stirred at 250°C for 5 minutes. After that, add antimony trioxide (AO), a polymerization catalyst equivalent to 84 ppm of the total polyester, and add diethylene glycol isophthalate-5-sulfonic acid equivalent to 20.00 wt% of the total polyester after stirring for 5 minutes. Sodium, stir...

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Abstract

The invention discloses an antistatic polyester composition and a preparation method thereof. The antistatic polyester composition is mainly composed of an aromatic dicarboxylic acid unit and an aliphatic dihydric alcohol unit, and contains a secondary alkyl sulfonic acid alkali metal salt with a structural formula of R1SO3M, after the polyester composition is placed at 20 DEG C and 65 RH% for 24 h, the surface specific resistance R1 is below 1011 omega / square, the difference value between Log10 (R2) and Log10 (R1) is below 2.0, and the surface specific resistance R1 is below 1011 omega / square. R2 is the surface specific resistance of the polyester composition after being placed at 25 DEG C and 40 RH% for 24 hours. The polyester composition is excellent in antistatic property, low in antistatic humidity dependency and low in foreign matter content, and a polyester film containing the antistatic polyester composition is excellent in antistatic property and good in transparency.

Description

technical field [0001] The invention relates to an antistatic polyester composition with excellent antistatic properties and low humidity dependence of antistatic properties, a preparation method thereof, and an antistatic polyester composition prepared from the antistatic polyester composition with excellent antistatic properties and good transparency Polyester film. Background technique [0002] Because of its excellent transparency, dimensional stability, mechanical properties, heat resistance, electrical insulation, chemical resistance, etc., polyester film has a wide range of applications in packaging materials, optical materials, magnetic materials and many other fields. big market. [0003] The surface specific resistance of ordinary polyester film is 10 14 ~10 16 Ω / □, static electricity is easily generated due to friction, contact, etc. Due to the problem of static electricity, the film has poor shape during processing, or the surrounding dust is easily adsorbed ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K5/42C08K3/22C08K5/098C08G63/688C08G63/78C08J5/18C08G63/183
CPCC08K5/42C08K3/22C08K5/098C08G63/6886C08G63/78C08J5/18C08G63/183C08K2201/017C08L2201/04C08L2201/10C08J2367/02C08J2467/02C08K2201/014C08L67/02
Inventor 祁华左文艳望月克彦
Owner TORAY FIBER RES INST(CHINA) CO LTD
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