A POLYESTER RESIN, A HOLLOW MOLDED BODY FORMED THEREFROM, AND A PRODUCTION METHOD THEREFOR

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United States of America Patent

APP PUB NO 20230365747A1
SERIAL NO

18026192

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Abstract

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The present invention provides a polyester resin and a hollow molded body containing reduced amounts of cyclic trimer and aluminum-based foreign matter, with maintained catalytic activity and a reduced catalyst cost. A polyester resin, comprising an aluminum compound and a phosphorus compound, and satisfying the following (1) to (3): (1) a content of aluminum element in the polyester resin is 9 to 19 ppm by mass, (2) a content of phosphorus element in the polyester resin is 22 to 40 ppm by mass. and (3) a mole ratio of phosphorus element to aluminum element in the polyester resin is 1.55 or more and 1.85 or less.

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Patent Owner(s)

Patent OwnerAddress
TOYOBO CO LTDKITA-KU OSAKA-SHI OSAKA 530-0001

International Classification(s)

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  • 2021 Application Filing Year
  • C08G Class
  • 2313 Applications Filed
  • 680 Patents Issued To-Date
  • 29.40 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KANETAKA, Shinya Osaka, JP 4 0
NAKAGAWA, Satoru Fukui, JP 28 169
UOTANI, Kosuke Fukui, JP 7 5

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  • C08G Class
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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges228325101 - 100100200300400500600700800900100011001200130014001500160017001800190020002100220023002400

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