Aliphatic polyester and use thereof

Abstract

The present invention provides an aliphatic polyester and use thereof. The aliphatic polyester includes a dicarboxylic acid residue and a diol residue; the dicarboxylic acid residue includes the following residues: a1), based on a total molar percentage content of a1) and a2) as 100 mol %, 65-90 mol % of a succinic acid residue; and a2), based on the total molar percentage content of a1) and a2) as 100 mol %, 10-35 mol % of a sebacic acid residue; the diol residue is selected from a 1,4-butanediol residue with a molar content at least equal to that of the dicarboxylic acid residue; and the aliphatic polyester includes an oligomer with a number-average molecular weight<1,000 as measured by gel permeation chromatography (GPC), and a mass percentage content of the oligomer with the number-average molecular weight<1,000 as measured by GPC in the aliphatic polyester is 0.08-3.5 wt %.

Dependencies are inferred from the claim text.