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US4584353A Polyester block copolymer composition 失效
聚酯嵌段共聚物组成

Polyester block copolymer composition
摘要:
An improved polyester block copolymer composition having a rubber-like elasticity, particularly having excellent moldability, impact resistance, heat resistance and water resistance, which comprises a polyester block copolymer produced from a crystalline aromatic polyester and a lactone in melt-admixture with a polytetramethylene terephthalate and optionally further with at least one epoxy compound.
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