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AssigneeMitsubishi Chemical Corporation
InventorsTakayuki Aoshima, Yasuaki Miki, Katsuhisa Kumazawa, Satoshi Katou, Tadashi Uyeda, Toyomasa Hoshino, Noboru Shintani, Kenji Yamagishi, Atsushi Isotani
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An aliphatic dicarboxylic acid, an aliphatic diol or a derivatives thereof and/or as succinic acid, a butane diol, or a both-hydroxy-terminated polyether having the number of carbon atoms of 4 to 1000, each of which is derived from a biomass resource and has nitrogen atoms in an amount of 0.01 to 100 ppm. Products and methods using these materials are also provided.
A biomass-resource-derived polyester, comprising as a main repeating unit thereof at least one dicarboxylic acid unit and at least one diol unit, wherein at least one of the dicarboxylic acid and diol used as raw materials of the polyester is obtained from biomass resources and a nitrogen atom content in the polyester except nitrogen atoms contained in covalently bonded functional groups in the molecule of the polyester are, in terms of a mass ratio, 0.01 ppm to 100 ppm relative to the polyester.
A biomass-resource-derived polyester-sin composition, which comprises 99.9 to 0.1 wt. % of a biomass-resource-derived polyester according to claim 1 and 0.1 to 99.9 wt. % of a thermoplastic resin, biodegradable resin, natural resin or polysaccharide.
Dependencies are inferred from the claim text.