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Bio-based polyethylene glycol terephthalate and preparation method thereof

A technology of ethylene glycol phthalate and purified terephthalic acid, which is applied in the field of bio-based polyethylene terephthalate and its preparation, can solve problems restricting the development of the polyester industry and achieve low-cost Effect

Inactive Publication Date: 2015-07-15
GUANGDONG SHUNDE SHUNYAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the raw materials of the polyester production industry all over the world are extracted from petroleum products, and the polyester industry accounts for more than 70% of the output of the entire chemical fiber industry. The limited petroleum resources have seriously restricted the development of the polyester industry.

Method used

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  • Bio-based polyethylene glycol terephthalate and preparation method thereof
  • Bio-based polyethylene glycol terephthalate and preparation method thereof
  • Bio-based polyethylene glycol terephthalate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of bio-based polyethylene terephthalate comprises the following steps:

[0027] (1) prepare materials by formula 1 of table 1;

[0028] (2) First mix PTA and BioEG evenly, then add to the polymerization kettle, add TiO 2 , SiO 2 and Sb 2 o 3 As a catalyst; add triphenyl phosphite as a stabilizer, add antioxidant 1010 and antioxidant 168 as an antioxidant for esterification, wherein the weight ratio of antioxidant 1010 and antioxidant is 1:2. The esterification reaction was carried out at a temperature of 240° C., a pressure of 0.3 MPa, and an esterification time of 4 hours. After the esterification is completed, vacuum polycondensation is carried out, and the polycondensation reaction is carried out at a temperature of 270° C., and the reaction time is 5.5 hours; after the polycondensation is completed, bio-based polyethylene terephthalate (PET) can be obtained.

[0029] Prepare petroleum-based polyethylene terephthalate, comprising the steps:

[0...

Embodiment 2

[0035] The bio-based polyethylene terephthalate prepared by Example 1 formula 1, and the petroleum-based polyethylene terephthalate prepared by formula 2 are tested as shown in table 2, and the test results are also shown in the table 2 shows:

[0036] Table 2 The test results of polyethylene terephthalate

[0037]

[0038] The above test results show that: the bio-based polyethylene terephthalate prepared by the present invention is different from the petroleum-based polyethylene terephthalate prepared under the same conditions and the same amount in terms of tensile strength, elongation at break, Flexural strength, flexural modulus, notched Izod impact strength, heat distortion temperature, density, intrinsic viscosity, and melting point are all equivalent, and some properties are even better than petroleum-based polyethylene terephthalate.

[0039] However, the bio-based polyethylene terephthalate prepared by the present invention has lower cost and is more environmenta...

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Abstract

The invention discloses bio-based polyethylene glycol terephthalate and a preparation method thereof, and belongs to the technical field of high-molecular compounds and preparation of the high-molecular compounds. The bio-based polyethylene glycol terephthalate comprises, by weight, 25 parts to 35 parts of bio-based ethanediol, 65 parts to 75 parts of purified terephthalic acid, 0.1 part to 0.5 part of heat stabilizer, 0.1 part to 0.5 part of catalyst and 0.1 part to 0.5 part of antioxygen. The material performance of the prepared bio-based polyethylene glycol terephthalate is similar to that of polyethylene glycol terephthalate prepared through petroleum-based ethanediol. The bio-based polyethylene glycol terephthalate has important economic prospects and sustainable development prospects. Meanwhile, the invention opens up a new polyethylene glycol terephthalate synthetic route. The synthetic route is more environmentally friendly and lower in cost.

Description

technical field [0001] The invention belongs to the technical field of polymer compounds and their preparation, and in particular relates to a bio-based polyethylene terephthalate and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a linear saturated thermoplastic polyester, the most important variety of thermoplastic polyester, commonly known as polyester resin. It is a condensation polymer of terephthalic acid and ethylene glycol, and together with PBT, it is collectively referred to as thermoplastic polyester, or saturated polyester. PET has regular molecular structure, strong intermolecular force, flexible molecular chain, easy crystallization, and high degree of crystallinity and orientation. [0003] In recent years, because PET has excellent mechanical strength, rigidity, high hardness, good sliding performance and wear resistance, good electrical insulation, very good creep resistance, low and stable friction coefficie...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/78
Inventor 阳瑞姚大爱张钊鹏林远开符宏孟郑崇深
Owner GUANGDONG SHUNDE SHUNYAN NEW MATERIALS
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