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AssigneesToyobo Co., Ltd., Nagoya Institute of Technology
InventorsShoko UCHIYAMA, Hideki TANAKA, Akinori TAKASU
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An object of the present invention is to provide a polyester resin that has a high degree of freedom in design and that can have excellent biodegradability even with an increased molecular weight. A polyester of the present invention contains a hydroxy group-containing dicarboxylic acid component and a diol component (excluding a hydroxy group-containing dicarboxylic acid component) as copolymerization components, wherein more than 50 mol % of an aliphatic diol component is contained in 100 mol % of the diol component, the polyester has a number average molecular weight of 3000 or higher, and the polyester has a total hydroxyl value of 1000 eq/ton or higher.
A polyester comprising a hydroxy group-containing dicarboxylic acid component and a diol component (excluding a hydroxy group-containing dicarboxylic acid component) as copolymerization components, wherein
A production method for a polyester, the method comprising condensing a hydroxy group-containing dicarboxylic acid and a diol by a low-temperature melt polycondensation method at 60 to 150° C.
Dependencies are inferred from the claim text.