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    • 2. 发明申请
    • SOLID-STATE POLYMERIZATION OF A LIQUID CRYSTALLINE POLYMER
    • 液晶聚合物的固态聚合
    • WO2013032974A1
    • 2013-03-07
    • PCT/US2012/052437
    • 2012-08-27
    • TICONA LLCNAIR, Kamlesh P.GRAY, Steven D.
    • NAIR, Kamlesh P.GRAY, Steven D.
    • C08K5/20C09K19/22C09K19/30C09K19/32C09K19/34C09K19/48
    • C09K19/22C08K5/20C09K19/3086C09K19/322C09K19/3444C09K19/48C09K2019/0481
    • A method for forming a high molecular weight thermotropic liquid crystalline polymer is provided. The method includes melt polymerizing two or more monomers in the presence of a unique aromatic amide oligomer to form a prepolymer, and then solid-state polymerizing the prepolymer to achieve a target molecular weight. The present inventors have discovered that a unique aromatic amide oligomer can be employed to help increase the "low shear" complex viscosity of the resulting solid-state polymerized composition. This allows for the attainment of higher than conventional "low shear" complex viscosity values and/or a substantial reduction in the solid-state polymerization time needed to achieve a target complex viscosity. In addition, the oligomeric flow aid can also accelerate the extent to which the "high shear" melt viscosity is increased during solid-state polymerization, which may also contribute to a substantial reduction in the solid-state polymerization time needed to achieve a certain molecular weight.
    • 提供了形成高分子量热致液晶聚合物的方法。 该方法包括在独特的芳族酰胺低聚物存在下熔融聚合两种或更多种单体以形成预聚物,然后使预聚物固相聚合以达到目标分子量。 本发明人已经发现,可以使用独特的芳族酰胺低聚物来帮助提高所得固态聚合组合物的“低剪切”复数粘度。 这允许达到高于常规“低剪切”复数粘度值和/或实现目标复合物粘度所需的固态聚合时间的显着降低。 此外,低聚流动助剂还可以加速在固态聚合期间“高剪切”熔体粘度增加的程度,这也可能导致实现某种分子所需的固态聚合时间的显着降低 重量。