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Polyester master batch for optical film and preparation method thereof

A technology for polyester masterbatch and optical film, applied in the field of polyester masterbatch for optical film and its preparation, can solve the problems of high surface roughness, decreased light transmittance and clarity, poor flatness, etc. The effect of good opening performance, excellent opening effect and uniform performance

Pending Publication Date: 2022-01-21
SICHUAN DONGFANG INSULATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is based on the application of conventional micron-level anti-blocking agents in the field of high-end optical films, resulting in high surface roughness and poor flatness of polyester films, resulting in increased haze, decreased light transmittance and clarity, and the sub-micron or nano-level cannot meet the optical level. For issues such as the application requirements for the opening of polyester films, starting from the particle size and shape design of the silica anti-blocking agent, the sol-gel technology is used to prepare the particle size controllable monodisperse submicron / nano-scale spherical / spherical two Silica dispersion, and then through the ethylene terephthalate (PET) polymerization device to prepare polyester masterbatch for optical film; increase its specific surface area by spherical or spherical shape, and reduce the particle size of anti-blocking agent Improve its opening performance and optical properties under the conditions, so as to provide a polyester masterbatch with good performance for optical film and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of polyester masterbatch for optical film, the steps are as follows:

[0037] Add 5kg of pure water and 500g of ammonia water to 10kg of ethylene glycol, stir evenly, add 5kg of ethylene glycol solution of tetraethyl orthosilicate with a concentration of 30%, heat to 50°C for 50s, let it stand for 2h, and then At room temperature, add 1 kg of ethylene glycol solution of tetraethyl orthosilicate with a concentration of 30% and 0.06 kg of KH550 silane coupling agent, and continue stirring for 2 hours to obtain a stable and uniform product with a mass concentration of 2.3% and a particle size (D90) of 0.4 μm. Silica / ethylene glycol sol-gel blend;

[0038] Take 40kg of terephthalic acid and 19.4kg of ethylene glycol and place them in reactor A, stir evenly, raise the temperature to 248°C, and carry out esterification reaction for 3 hours. After the esterification rate reaches 92%, add 6kg of diethylene glycol to reactor A. Silicon oxide / ethylene glycol...

Embodiment 2

[0040] A preparation method of polyester masterbatch for optical film, the steps are as follows:

[0041] Add 5kg of pure water and 500g of ammonia water to 10kg of ethylene glycol, stir evenly, add 5kg of ethylene glycol solution of tetraethyl orthosilicate with a concentration of 30%, heat to 50°C for 50s, let stand for 10h, and then At room temperature, add 2.5 kg of ethylene glycol solution of tetraethyl orthosilicate with a concentration of 30% and 0.06 kg of KH560 silane coupling agent, and continue stirring for 2 hours to obtain a stable, Uniform silica / glycol sol-gel blend;

[0042] Take 40kg of terephthalic acid and 19.4kg of ethylene glycol in reactor A, stir evenly, raise the temperature to 248°C, and carry out esterification reaction for 3 hours. After the esterification rate reaches 92%, add 5.1kg of Silica / ethylene glycol slurry, 0.002kg ethylene glycol aluminum catalyst, then add 0.009kg trimethyl phosphate, stir evenly; then transfer all the reaction materials...

Embodiment 3

[0044] A preparation method of polyester masterbatch for optical film, the steps are as follows:

[0045] Add 5kg of pure water and 500g of ammonia water to 10kg of ethylene glycol, stir evenly, add 5kg of ethylene glycol solution with a concentration of 30% tetraethyl orthosilicate, heat to 80°C for 120s, let it stand for 10h, and then place it at room temperature Add 2.5kg of ethylene glycol solution of tetraethyl orthosilicate with a concentration of 30% and 0.09kg of KH570 silane coupling agent, and continue to stir and react for 2 hours to obtain a stable and uniform product with a mass concentration of 2.7% and a particle size (D90) of 1.2 μm. Silica / ethylene glycol sol-gel blend;

[0046] Take 40kg of terephthalic acid and 19.4kg of ethylene glycol in reactor A, stir evenly, raise the temperature to 248°C, and carry out esterification reaction for 3 hours. After the esterification rate reaches 92%, add 5.1kg of Silica / ethylene glycol slurry, 0.002kg aluminum isopropoxi...

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Abstract

The invention discloses a polyester master batch for an optical film and a preparation method thereof. The polyester master batch for the optical film is characterized in that the polyester master batch for the optical film is prepared by copolycondensation of silicon dioxide, terephthalic acid and ethylene glycol. The preparation method comprises the following steps: adding pure water and ammonia water into ethylene glycol, uniformly stirring, adding an ethylene glycol solution of tetraethoxysilane, heating for reaction, standing, adding the ethylene glycol solution of tetraethoxysilane and a silane coupling agent, and stirring for reaction to obtain a silica sol-gel blended solution; adding terephthalic acid and ethylene glycol into an esterification reaction kettle, uniformly stirring, heating to 220-265 DEG C, reacting for 2-4 hours, adding the silicon dioxide sol-gel blending liquid, a catalyst and a heat stabilizer, and uniformly stirring; and transferring all reaction materials into a polycondensation reaction kettle, reacting for 1-5 hours at the temperature of 265-290 DEG C and the pressure of less than 150Pa, cooling, and pelletizing to obtain the polyester master batch for the optical film. According to the invention, the opening performance and the optical property are good.

Description

technical field [0001] The invention belongs to polyester masterbatch and its preparation, and relates to a polyester masterbatch for optical film and its preparation method. The (prepared) polyester masterbatch for optical films of the present invention is particularly suitable for ultra-thin optical films used in the fields of polarizer release films and protective films, chip multilayer ceramic capacitor release films, and the like. Background technique [0002] In the production process of ordinary polyester film, due to its self-adhesiveness, it is easy to cause the polyester films to stick to each other, which often brings inconvenience to the processing of polyester film. In order to improve the self-adhesiveness of polyester film, usually the main solution is to use polyester masterbatch chips containing anti-blocking particles as anti-blocking agent (slippery agent), polyester film prepared by using such polyester masterbatch chips can be Effectively increase the s...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/83C08G63/84C08G63/85C08G63/86C08K3/36C08K7/18C08J3/22C08L67/02C08J5/18
CPCC08G63/183C08G63/84C08G63/85C08G63/866C08G63/83C08G63/863C08K3/36C08K7/18C08J3/226C08J5/18C08K2201/011C08J2467/02
Inventor 梁倩倩江涌刘敏刘健飞周元友
Owner SICHUAN DONGFANG INSULATING MATERIAL
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