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Environment-friendly uvioresistant polyester and preparation method thereof

An anti-ultraviolet and environment-friendly technology, applied in the field of polymer materials, can solve the problems of non-heavy metal-free environmental protection characteristics, and achieve the effects of sustainable development promotion, stable performance, and easy industrialization

Pending Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-ultraviolet aging polyester material successfully prepared by this technology, but it does not have the environmental protection characteristics of no heavy metals

Method used

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  • Environment-friendly uvioresistant polyester and preparation method thereof
  • Environment-friendly uvioresistant polyester and preparation method thereof
  • Environment-friendly uvioresistant polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add an appropriate amount of PTA, EG, and the third monomer (1,3-propanediol and neopentyl glycol according to the ratio of 1:1, 5% ratio of total alcohol) in the esterification reactor (the mol ratio of acid alcohol is 1:1) and anti-ultraviolet agent (addition amount is 4% of the total amount of reaction monomers), pressurize esterification after beating evenly, the temperature of the esterification reaction is 220 ° C, and the reaction time is 3 hours; after the end of the esterification, Stir at normal pressure for 20 minutes, transfer the esterification material to the polycondensation reactor, add the catalyst ethylene glycol titanium complex (STiC-01) and ethylene glycol titanium complex No. 1 (TY-1) (the ratio of the two 2:1, the addition amount is 6ppm of the total reaction monomers), heat stabilizer organophosphate (the addition amount is 20ppm of the total reaction monomers), enter the low vacuum stage, low vacuum (vacuum degree 200 ~ 400Pa) for 45 minutes, Me...

Embodiment 2

[0028] Add an appropriate amount of PTA, EG, and the third monomer (1,4-butanediol and neopentyl glycol according to the ratio of 1:1, 5% ratio of total alcohol) in the esterification reactor (the molar ratio of acid to alcohol 1:1.5) and anti-ultraviolet agent (addition amount is 6% of the total amount of reaction monomers), pressurize esterification after beating evenly, the temperature of esterification reaction is 260 ° C, and the reaction time is 5 hours; after the end of esterification , stirred at normal pressure for 20 minutes, pipetted the esterification material to the polycondensation reactor, and added catalyst ethylene glycol titanium complex (STiC-01) and ethylene glycol titanium complex No. 1 (TY-1) (both The ratio is 1:1, the addition amount is 7ppm of the total reaction monomers), the heat stabilizer trimethyl phosphate (the addition amount is 20ppm of the total reaction monomers), enters the low vacuum stage, low vacuum (vacuum degree 200 ~ 400Pa) 45 Minutes,...

Embodiment 3

[0032] Add appropriate amount of PTA, EG, and the third monomer (isophthalic acid and sebacic acid according to the ratio of 1:1, 3% ratio of total acid) in the esterification reactor (the molar ratio of acid alcohol is 1: 1.2) and anti-ultraviolet agent (the addition amount is 8% of the total amount of reaction monomers), pressurize esterification after beating evenly, the temperature of esterification reaction is 230 ℃, and the reaction time is 4 hours; Stir for 20 minutes, transfer the esterification material to the polycondensation reactor, add catalyst ethylene glycol titanium complex (STiC-01) (addition is 7ppm of the total amount of reaction monomers), heat stabilizer dimethyl phosphate (addition The amount is 20ppm of the sum of the reaction monomers), enter the low vacuum stage, low vacuum (vacuum degree 200-400Pa) for 45 minutes, medium vacuum (vacuum degree 100-200Pa) for 45 minutes, enter the high vacuum (less than 100Pa) stage, co-condensation The reaction tempera...

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Abstract

The invention provides an environment-friendly uvioresistant polyester and a preparation method thereof. According to the invention, purified terephthalic acid, ethylene glycol and a third monomer areselected as raw materials, an anti-ultraviolet aging agent, a heavy-metal-free catalyst and a heat stabilizer are adopted, and the heavy-metal-free environment-friendly anti-ultraviolet polyester isobtained through direct esterification reaction and condensation polymerization reaction in-situ polymerization. The environment-friendly uvioresistant polyester can improve the safety to human health, is more stable in anti-ultraviolet aging performance, is simple in process, is easy to industrialize, and has a better market prospect.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to polyester synthesis technology, in particular to a heavy metal-free environment-friendly anti-ultraviolet polyester and a preparation method thereof. Background technique [0002] Since DuPont built the world's first polyester fiber production plant in Kinston, North Carolina, in 1953, the development of PET has entered a stage of rapid development. The initial production is mainly concentrated in the United States, Japan and Western Europe, and later developing countries. also began to develop rapidly. At present, the world's polyester products are gradually entering the mid-to-high-end non-fiber market. The focus on ecology, environment and resources has prompted the development of new polyester products to focus on how to make the overall polyester processing chain low energy consumption, less pollution and recycled polyester. of recycling. [0003] The development of efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/78C08K3/34
CPCC08G63/183C08G63/78C08K3/34C08K2201/011
Inventor 刘春秀沈伟李华林雪梅王伟夏东平任明利程川谭晓玲
Owner CHINA PETROLEUM & CHEM CORP