| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filter comprising meta-type wholly aromatic polyamide fibers excellent in acid resistance in a high-temperature atmosphere. <P>SOLUTION: The filter is manufactured using the meta-type wholly aromatic polyamide fibers whose single fiber fineness is in a specific range and the content of a remaining solvent is a specific value or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
