High-transmittance modified PET resin and application thereof

A high transmittance and modified technology, applied in the field of PET, can solve the problem of low transmittance of PET resin

Inactive Publication Date: 2021-03-30
银金达(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of lo

Method used

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  • High-transmittance modified PET resin and application thereof
  • High-transmittance modified PET resin and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1mol of terephthalic acid and 1.01mol of ethylene glycol were added to the reactor, and the temperature was slowly raised to 240°C under a pressure of 0.5mpa for 6 hours of continuous reaction.

[0034] Remove the 0.5mpa pressure, start vacuuming, remove the generated water, and remove the vacuum when no more water is distilled out in the return line. Add 0.01mol of tetrafluoroterephthalic acid, apply a pressure of 0.5mpa, and keep the temperature at 240°C for 2 hours.

[0035] Remove the 0.5mpa pressure, start vacuuming, add a total mass of 0.05% antimony acetate catalyst, start heating up to 270°C, and continue the vacuum polycondensation reaction until the stirring power feedback value reaches the set value.

Embodiment 2

[0037] 1mol of terephthalic acid and 1.005mol of ethylene glycol were added to the reactor, and the temperature was slowly raised to 240°C under a pressure of 0.5mpa for 6 hours of continuous reaction.

[0038] Remove the 0.5mpa pressure, start vacuuming, remove the generated water, and remove the vacuum when no more water is distilled out in the return line. Add 0.005mol of tetrafluoroterephthalic acid, apply a pressure of 0.5mpa, and keep the temperature at 260°C for 10 hours.

[0039] Remove the 0.5mpa pressure, start vacuuming, add a total mass of 0.07% antimony acetate catalyst, start heating up to 280°C, and continue the vacuum polycondensation reaction until the stirring power feedback value reaches the set value.

Embodiment 3

[0041] 1mol of terephthalic acid and 1.006mol of ethylene glycol were added to the reactor, and the temperature was slowly raised to 250°C under a pressure of 0.5mpa for 6 hours of continuous reaction.

[0042] Remove the 0.5mpa pressure, start vacuuming, remove the generated water, and remove the vacuum when no more water is distilled out in the return line. Add 0.006mol of tetrafluoroterephthalic acid, apply a pressure of 0.5mpa, and keep the temperature at 260°C for 6 hours.

[0043] Remove the 0.5mpa pressure, start vacuuming, add a total mass of 0.07% antimony acetate catalyst, start heating up to 270°C, and continue the vacuum polycondensation reaction until the stirring power feedback value reaches the set value.

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Abstract

The invention discloses a high-transmittance modified PET resin, which can be used for cosmetic packaging bottles and beverage packaging bottles. By reducing the granularity and modifying PET, the transparency of the PET resin can be strongly improved.

Description

technical field [0001] The invention relates to the field of PET, in particular to a high transmittance modified PET resin. Background technique [0002] With the rapid development of the domestic cosmetics market, many cheap cosmetics have emerged. On the premise of not affecting product quality, the reduction of packaging costs has become more and more important. Therefore, counterfeit and expensive glass bottles began to be slowly replaced. [0003] PET is a very good material. In the field of practical common products, PET is mainly used for the packaging of various beverage containers, such as pure water bottles like Nongfu Spring and beverage bottles like Coke. Due to its transparency, it has been unable to replace the application of glass. Therefore, PETG is mainly used as a raw material for cosmetic packaging in the domestic market. However, the quality of domestic PETG products is unstable. At present, high-performance PETG is mainly monopolized by Japanese compani...

Claims

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Application Information

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IPC IPC(8): C08G63/682C08G63/78
CPCC08G63/6826C08G63/78C08G2390/00
Inventor 欧雪光宋厚春孔林明陈洪王翔宇
Owner 银金达(上海)新材料有限公司
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