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AssigneesKaneka Corporation, National University Corporation Kobe University, National Institute of Advanced Industrial Science and Technology
InventorsToshihiko KANDA, Sho FURUTATE, Shunsuke SATO, Sangho KOH, Seiichi TAGUCHI, Yusuke IMAI, Yuichi TOMINAGA, Shinji TANAKA, Masaru YOSHIDA
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A resin composition contains polylactic acid and a copolyester of lactic acid and another hydroxycarboxylic acid. The copolyester has a weight-average molecular weight of 11×104 or more. The copolyester has a copolymerization randomness of 0.5 to 3.0, the copolymerization randomness being calculated as a ratio (b/a) of a theoretical value (b) of a triad content of the other hydroxycarboxylic acid to a measured value (a) of the triad content of the other hydroxycarboxylic acid. The copolyester of lactic acid and another hydroxycarboxylic acid can be used as a soil biodegradation accelerator for accelerating soil biodegradation of polylactic acid.
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A method for accelerating soil biodegradation of polylactic acid, the method comprising bringing a copolyester of lactic acid and another hydroxycarboxylic acid into contact with the polylactic acid.
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Dependencies are inferred from the claim text.