发明名称 |
SOLID-STATE POLYMERIZATION OF A LIQUID CRYSTALLINE POLYMER |
摘要 |
<p>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.</p> |
申请公布号 |
WO2013032974(A1) |
申请公布日期 |
2013.03.07 |
申请号 |
WO2012US52437 |
申请日期 |
2012.08.27 |
申请人 |
TICONA LLC;NAIR, KAMLESH P.;GRAY, STEVEN D. |
发明人 |
NAIR, KAMLESH P.;GRAY, STEVEN D. |
分类号 |
C08K5/20;C09K19/22;C09K19/30;C09K19/32;C09K19/34;C09K19/48 |
主分类号 |
C08K5/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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