Aromatic polyamide resin moldings, production methods thereof, and magnetic recording medium produced therefrom
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United States of America Patent
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Aug 14, 2001
Grant Date -
N/A
app pub date -
Apr 28, 1998
filing date -
Aug 29, 1996
priority date (Note) -
Reissued
status (Latency Note)
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Abstract
The present invention provides aromatic polyamide resin moldings comprising at least one surface that is 1.0 nm or more in root-mean-square roughness and is 80 nm or less in 10-point average roughness, both of the roughness being as determined by atomic force microscopy, and that is 9.8 GPa or more in tensile Young's modulus at least in one direction. Such aromatic polyamide resin moldings serve effectively as material for film, film for magnetic recording medium in particular, that is highly resistant to scraping and has highly uniform surface protrusions.
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