| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonwoven fabric solving the alignment deviation caused by the formation of skin layer and core layer in a conventional liquid crystal resin fiber, suppressing partial fibrillation, and suitable e.g. as a substrate of a printed circuit board made of a liquid crystal resin fiber resistant to the lowering of strength in fibrillation, and having excellent strength and high-temperature dimensional stability and extremely small compressive deformation. SOLUTION: The nonwoven fabric is composed of a liquid crystal resin composed of the following structural units (I), (II), (III), (IV) and (V) provided that the amount of the structural unit (I) is 65-80 mol% based on the sum of the structural units (I), (II) and (III), the amount of the structural unit (II) is 60-75 mol% based on the sum of the structural units (II) and (III), the amount of the structural unit (IV) is 60-92 mol% based on the sum of the structural units (IV) and (V), and the sum of the structural units (II) and (III) is essentially equimolar to the sum of the structural units (IV) and (V). COPYRIGHT: (C)2007,JPO&INPIT
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