Title:
POLYESTER RESIN
Document Type and Number:
WIPO Patent Application WO/2023/032920
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polyester resin or the like that has excellent gelling suppression, moldability, surface smoothness, transparency, mechanical properties, heat resistance, and thermal oxidation resistance stability. The present invention relates to a polyester resin that is characterized by having, as constituent components thereof, terephthalic acid as a dicarboxylic acid component, and ethylene glycol, a bisphenol A-ethylene oxide adduct, and a compound represented by a specific structure as alcohol components, wherein the terephthalic acid is 85-100 mol% of the dicarboxylic acid component or components, the proportion of ethylene glycol is 85-98 mol% whereas that of the bisphenol A-ethylene oxide adduct is 2-15 mol%, and the compound represented by the specific structure is 0.001-5 mass% within 100 mass% of the alcohol components. (In the formula, m and n each represent 1-1000, l represents 0-1000, R1 represents a C6-20 aromatic hydrocarbon group, and R2, R3, and R4 each represent a hydrogen atom or a C1-10 alkyl group.)
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Inventors:
YOSHIDA HIDEKAZU (JP)
HATANAKA YOSUKE (JP)
FUKUSHIMA HIROAKI (JP)
UOTANI KOSUKE (JP)
SASAKI HIRONAO (JP)
OHASHI HIDETO (JP)
NISHINAKA FUMIAKI (JP)
TOGAWA KEIICHIRO (JP)
HATANAKA YOSUKE (JP)
FUKUSHIMA HIROAKI (JP)
UOTANI KOSUKE (JP)
SASAKI HIRONAO (JP)
OHASHI HIDETO (JP)
NISHINAKA FUMIAKI (JP)
TOGAWA KEIICHIRO (JP)
Application Number:
PCT/JP2022/032421
Publication Date:
March 09, 2023
Filing Date:
August 29, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08G63/668
Domestic Patent References:
| WO2022131219A1 | 2022-06-23 |
Foreign References:
| JPH07505419A | 1995-06-15 | |||
| JP2013500355A | 2013-01-07 | |||
| JP2015025098A | 2015-02-05 |
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