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Hydrolysis-resistant aliphatic-aromatic copolyester and preparation method thereof

An aromatic polyester and aromatic technology, which is applied in the field of designing the preparation of hydrolysis-resistant and degradable copolyester, can solve problems such as difficulty in further recovery, and achieve the effects of good hydrolysis stability, avoiding addition and simplifying the process.

Active Publication Date: 2012-01-11
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The use of such inorganic ions can reduce the accelerated effect of acid carboxyl groups on polyester degradation, but the degraded part is difficult to recover

Method used

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  • Hydrolysis-resistant aliphatic-aromatic copolyester and preparation method thereof
  • Hydrolysis-resistant aliphatic-aromatic copolyester and preparation method thereof
  • Hydrolysis-resistant aliphatic-aromatic copolyester and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Add 200kg of 1,5-pentanediol and 175kg of dimethyl terephthalate into the reactor, under the protection of nitrogen, raise the temperature to 185°C, add 319g of n-butyl titanate, and maintain the temperature in the reactor at 180°C; 130kg of 1,5-pentanediol and 161kg of azelaic acid were reacted at 170°C for 4 hours.

[0042] Then, the above two esterified products were mixed together, and 100 g of antioxidant was added, and the temperature was raised to 210° C., and reacted in a low vacuum (90 KPa) for 1 hour. After the temperature reaches 230°C, react for 30 minutes, then start to slowly raise the temperature to 245°C, gradually increase the vacuum degree, so that the pressure in the kettle reaches 1KPa, keep the temperature constant, and keep the pressure in the kettle below 80Pa, react for 3.5 hours, turn the reactor Nitrogen was flushed inside, and 50g of sodium carbonate and 300g of vinyltrimethoxysilane were added to obtain a hydrolysis-resistant degradable polye...

Embodiment 2

[0045] Add 190kg of 1,4-butanediol and 175kg of dimethyl terephthalate into the reactor, under the protection of nitrogen, raise the temperature to 185°C, add 319g of n-butyl titanate, and maintain the temperature in the reactor at 180°C; 130kg of 1,4-butanediol and 210kg of adipic acid were reacted at 170°C for 4 hours.

[0046] Then, the above two esterified products were mixed together, and 100 g of phosphorous acid was added, and the temperature was raised to 210° C., and reacted in a low vacuum (90 KPa) for 1 hour. After the temperature reaches 230°C, react for 30 minutes, then start to slowly raise the temperature to 245°C, gradually increase the vacuum degree, so that the pressure in the kettle reaches 1KPa, keep the temperature constant, and keep the pressure in the kettle below 80Pa, react for 3.5 hours, turn the reactor Nitrogen was flushed inside, and 50 g of ethylene glycol carbonate and 180 g of γ-(2,3-epoxy)propanetrimethoxysilane were added to obtain a hydrolysi...

Embodiment 3

[0049] Add 190kg of 1,4-butanediol, 175kg of dimethyl terephthalate, and 1200g of trimesic acid into the reaction kettle. Under the protection of nitrogen, raise the temperature to 185°C, add 319g of n-butyl titanate, and maintain the reaction kettle The internal temperature is 180°C; 130kg of 1,4-butanediol and 210kg of succinic acid are reacted at 170°C for 4 hours.

[0050] Then, the above two esterified products were mixed together, and 100 g of phosphorous acid was added, and the temperature was raised to 210° C., and reacted in a low vacuum (90 KPa) for 1 hour. After the temperature reaches 230°C, react for 30 minutes, then start to slowly raise the temperature to 245°C, gradually increase the vacuum degree, so that the pressure in the kettle reaches 1KPa, keep the temperature constant, and keep the pressure in the kettle below 80Pa, react for 3.5 hours, turn the reactor Nitrogen gas was flushed inside, and 50 g of five-membered cyclic carbonate of soybean oil and 250 g ...

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Abstract

The invention discloses hydrolysis-resistant aliphatic-aromatic copolyester and a preparation method thereof. The preparation method comprises the following steps of: (1) carrying out ester exchange reaction on aromatic binary acid ester or aromatic binary acid and excessive dihydric alcohol to obtain ester P1; (2) reacting aliphatic binary acid, cyclized aliphatic binary acid, an esterification derivative of aliphatic binary acid or an esterification derivative of cyclized aliphatic binary acid with aliphatic dihydric alcohol to obtain ester P2; and (3) mixing P1 with P2, adding an antioxidant to carry out condensation polymerization, then adding a carbonate mineral and a silane compound, and evenly mixing, thus the hydrolysis-resistant aliphatic-aromatic copolyester is obtained. The aliphatic-aromatic copolyester disclosed by the invention has better hydrolysis stability, properties of a polymer in storing and processing processes can be ensured to be stable, and the property retention rate of the polyester product can be improved; and meanwhile, the polyester product also has degradation performance after the application task of the product is completed, and a hydrolysis-resistant component is added in a synthetic process, thus addition during modification is avoided and process is simplified.

Description

technical field [0001] The present invention designs the preparation method of hydrolysis-resistant and degradable copolyester Background technique [0002] As people pay more and more attention to the problem of environmental pollution, people hope that polymer materials will not pollute the environment while meeting the performance requirements. In recent years, a number of policies have been introduced at home and abroad to encourage the application and promotion of biodegradable plastics. Biodegradable materials Under the background of "green chemistry", scientific research institutes and enterprises at home and abroad have developed multiple biodegradable plastics, such as PLA, PBS, PHA, PBAT, etc. [0003] Degradable polyester materials have been widely used, such as films, foam materials, injection molded parts, etc. Such materials have good physical properties and can be degraded into water and carbon dioxide in composting or natural state, with no potential harm t...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K3/26C08K5/5425C08K5/109C08K5/5435C08K5/5419C08K5/548C08G63/183C08G63/20C08G63/199
Inventor 苑仁旭徐依斌焦建曾祥斌蔡彤旻
Owner KINGFA SCI & TECH CO LTD
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