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Copolyester and polyester bottle made of same

A technology of copolyester and polyester, applied in the field of copolyester, can solve the problems of high manufacturing cost and increased commercialization resistance, etc.

Inactive Publication Date: 2006-11-29
NANYA PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the manufacturing cost of this copolyester using the above method is relatively expensive, and the resistance to commercialization is relatively increased

Method used

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  • Copolyester and polyester bottle made of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] According to the preparation method of the copolyester containing naphthalene ring structure shown in the present invention, obtain the copolyester containing 0.8 mol % 2,6-naphthalene dicarboxylate and 1.30 mol % diethylene glycol based on the copolyester, and this The intrinsic viscosity of the copolyester was 0.80 dl / g.

[0045] As shown in Table 1, this copolyester is used to make a polyester filling bottle with a capacity of 0.6 liters. After testing, the heat-resistant filling temperature is 85.5°C, and it can pass the Pasteur high temperature sterilization test.

Embodiment 2

[0047] The copolyester obtained in Example 1 is used as the material, but the intrinsic viscosity of the copolyester is increased to 0.84dl / g.

[0048] As shown in Table 1, the polyester filled bottle with a capacity of 0.6 liters made of this copolyester has a heat-resistant filling temperature of 86.0° C. and can pass the Pasteur high temperature sterilization test.

Embodiment 3

[0050] According to the preparation method of the copolyester containing naphthalene ring structure shown in the present invention, obtain the copolyester containing 0.8 mol % 2,6-naphthalene dicarboxylate and 1.65 mol % diethylene glycol based on the copolyester, and this The intrinsic viscosity of the copolyester was 0.84 dl / g.

[0051] As shown in Table 1, a polyester filled bottle with a capacity of 2.0 liters made of this copolyester has a heat-resistant filling temperature of 83.5° C. and can pass the Pasteur high temperature sterilization test.

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Abstract

A copolyester contains proportionally glycol terephthalate, naphthalene ring component and diethanediol. It is suitable for preparing the polyester filling bottle with high filling temp (more than 82 deg.C), so it can suffer from the high-temp pasteurization.

Description

technical field [0001] The invention relates to a copolyester, especially a copolyester containing a small amount of naphthalene ring structural components and suppressing the content of diethylene glycol. Background technique [0002] The thermoplastic copolyester containing naphthalene ring structure (hereinafter referred to as copolyester) has a higher glass transition temperature than ordinary polyester, but the naphthalene ring component of this copolyester must reach a high level in order to show better This is a well-known conventional technology in the field of polyester technology. For example, US Patent No. 6,551,675 discloses a copolyester containing 5-15 mol% naphthalene ring structural components. [0003] In particular, when the copolyester containing naphthalene ring structure is used as the material and made into a polyester filled bottle (container), the polyester filled bottle can have better high temperature resistance characteristics, and can pass the Pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/189
Inventor 简日春
Owner NANYA PLASTICS CORP
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