The present invention provides certain aromatic copolyetheresters that include hydroxyalkanoic acid residues, and processes for making the copolyetheresters, and articles containing the copolyetheresters. The copolyetheresters have desirable thermal properties, and can be used in forming shaped articles, such as films, coatings and laminates. The copolyetheresters are produced from a mixture of aromatic dicarboxylic acids, hydroxyalkanoic acids, a poly(alkylene ether) glycol, a glycol component, optional other glycol, optional branching agents, and optional color reducing agent components. Some of the copolyetheresters are biocompostable.
本发明提供了包括羟基烷酸残基的某些芳香族共聚醚化剂、制造共聚醚化剂的工艺以及含有共聚醚化剂的物品。这种共聚醚酯具有理想的热性能,可用于成型物品,如薄膜、涂层和层压板。共聚醚酯由芳香族二
羧酸、羟基烷酸、聚(烷基醚)
乙二醇、
乙二醇组分、任选的其他
乙二醇、任选的支化剂和任选的减色剂组分的混合物制成。某些共聚醚酯可进行
生物堆肥。