Biomass-resource-derived polyester and production process thereof
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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Abstract
The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.
Claims10
A pellet obtained from a biomass-resource-derived polyester, wherein the biomass-resource derived polyester comprises as the main repeating units thereof a dicarboxylic acid unit and a diol unit, wherein at least one of the dicarboxylic acid and diol units used as raw materials of the polyester is obtained from biomass resources and the amount of terminal acid in the polyester is 100 equivalents/metric ton or less;
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- wherein a nitrogen atom content in the biomass-resource derived polyester except nitrogen atoms contained in the covalently bonded function group in the molecule of the biomass-resource derived polyester is, in terms of mass ratio, 0.01 ppm or greater but not greater than 100 ppm relative to the polyester.
Dependencies are inferred from the claim text.