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Efficient Conversion of Polyamides to ω-Hydroxyalkanoic Acids: A New Method for Chemical Recycling of Waste Plastics

Authors

  • Dr. Akio Kamimura,

    Corresponding author
    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
    • Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231

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  • Kosuke Ikeda,

    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
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  • Shuzo Suzuki,

    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
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  • Kazunari Kato,

    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
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  • Yugo Akinari,

    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
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  • Dr. Tsunemi Sugimoto,

    1. Ube Laboratory, Ube Industries, Ube 755-8633 (Japan)
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  • Dr. Kohichi Kashiwagi,

    1. Ube Laboratory, Ube Industries, Ube 755-8633 (Japan)
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  • Dr. Kouji Kaiso,

    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
    2. Ube Laboratory, Ube Industries, Ube 755-8633 (Japan)
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  • Hiroshi Matsumoto,

    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
    2. Ube Laboratory, Ube Industries, Ube 755-8633 (Japan)
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  • Dr. Makoto Yoshimoto

    1. Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611 (Japan), Fax: (+81) 836-85-9231
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Abstract

An efficient transformation of polyamides to ω-hydroxy alkanoic acids was achieved. Treatment of nylon-12 with supercritical MeOH in the presence of glycolic acid gave methyl ω-hydroxydodecanoate in 85 % yield and the alcohol/alkene selectivity in the product was enhanced to up to 9.5:1. The use of 18O-enriched acetic acid for the reaction successfully introduced an 18O atom at the alcoholic OH group in the product. This strategy may provide a new and economical solution for the chemical recycling of waste plastics.

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