Hydrophilic polyester as well as polymerization method and application thereof

The invention discloses a hydrophilic polyester which is derived to a dihydroxyl unit and a diacid unit according to molar percentage, the dihydroxyl unit comprises a bisphenol monomer containing an amide group and dihydric alcohol, and the bisphenol monomer containing the amide group accounts for 10-100 mol% of the dihydroxyl unit. An amide group belongs to a polar group and has hydrophilicity, molecules containing the amide group are easier to interact through intermolecular hydrogen bonds or dipole moments, the hydrophilicity of the polyester is greatly improved, meanwhile, the toughness and heat resistance of the material are further improved through introduction of a multi-benzene-ring ether bond structure, and the application range of the material in the high-quality fields such as the medicine packaging market is widened. 本发明公开了一种亲水性聚酯，按摩尔百分比计，衍生至二羟基单元和二酸单元，其中，二羟基单元包括含酰胺基团双酚单体和二元醇，含酰胺基团双酚单体占二羟基单元摩尔百分比为10-100mol%。酰胺基团属于极性基团，具有亲水性，含有酰胺基团的分子更容易通过分子间氢键或者偶极矩的相互作用，极大的提高聚酯的亲水性，同时多苯环醚健结构的引入也进一步提升材料的韧性及耐热性，拓宽其在