Polyester resin, method of producing the same, composition for molded article and molded article

摘要

A polyester resin comprising residues of 2,5-furandicarboxylic acid and a diol, which can be used for producing a molded article having excellent impact resistance, and a method of producing the polyester resin. The polyester resin has structural units represented by general formulae (1) and (3):;
R1 in general formula (1) is an optionally substituted acyclic aliphatic hydrocarbon group. R2 in general formula (3) represents an alkylene group, and m represents an integer from 2 to 1,140, provided that a case where R2 represents an ethylene group and m represents 2 is excluded.

主权项

1. A polyester resin, consisting essentially of:
a structural unit represented by general formula (1); and a structural unit represented by general formula (3): where R1 represents an aliphatic hydrocarbon group, which may be substituted, where R2 represents an alkylene group, and m represents an integer in a range of 2 to 1,140, provided that a case where R2 represents an ethylene group and m represents 2 is excluded, wherein a content of the structural unit represented by the general formula (1) in the polyester resin is 20 mol % to 99.9 mol % with respect to a total of the structural units represented by the general formulae (1) and (3), and wherein a number average molecular weight is 100,000 to 120,000.