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    • 8. 发明授权
    • Continuous process for the production of segmented elastomer polyester copolymer
    • 用于生产分段弹性体聚酯共聚物的连续工艺
    • US06274696B1
    • 2001-08-14
    • US09659740
    • 2000-09-11
    • Geert I. V. BonteRainer HagenEike Schulz Van Endert
    • Geert I. V. BonteRainer HagenEike Schulz Van Endert
    • C08G6300
    • C08G63/78C08G63/672
    • The invention relates to a continuous process for the preparation of segmented elastomer polyester copolymers that shows greater flexibility with respect to the types and amounts of product to be produced than the known processes. The flexibility is achieved by splitting up a low-molecular PBT product stream from a continuous PBT process and partly using it as feed for the transesterification reaction with the polyalkyleneoxide glycol yielding soft segments to form a low-molecular segmented polyester copolymer, which is subsequently further condensed in the melt or optionally in the solid phase to form high-molecular segmented polyester copolymers. Even greater flexibility can be obtained by operating several parallel production lines for segmented polyester copolymer. Fluctuations in the types of copolyester product to be produced and the amounts thereof are accommodated predominantly in the polycondensation step of the PBT production.
    • 本发明涉及用于制备分段弹性体聚酯共聚物的连续方法,其显示出比已知方法要生产的产品的类型和数量更大的灵活性。通过将低分子PBT产物流 来自连续的PBT方法,并且部分地将其用作与聚环氧烷二醇的酯交换反应的进料,产生软链段以形成低分子链段聚酯共聚物,随后在熔体中或任选地在固相中进一步浓缩, 分子分段的聚酯共聚物。通过操作多个平行的分段聚酯共聚物生产线可以获得更大的柔韧性。待生产的共聚酯产物类型和其用量的影响主要适用于PBT生产的缩聚步骤。