摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a liquid crystalline polyester fiber free from single fiber welding trouble in the case of performing solid-phase polymerization in a package form, having excellent processability in a higher-order processing and having little defects and fibrils. <P>SOLUTION: Provided are a liquid crystalline polyester fiber and its production method including the application of a fluorine compound having 40 or less carbon atoms and a polysiloxane to a fiber obtained by the melt-spinning of a liquid crystalline polyester and the solid-phase polymerization of the product. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |