| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene melt-blown nonwoven fabric for liquid filter, having nonconventional resistance to metallic deterioration by using a copper damage inhibitor or the like. SOLUTION: The polypropylene melt-blown nonwoven fabric comprises a polypropylene resin composition obtained by compounding 0.05-3 pts.wt. phenolic antioxidant and 0.05-3 pts.wt. agent for preventing metal deterioration with 100 pts.wt. polypropylene resin. The melt blown nonwoven fabric has 0.8-40μm fiber diameter, 5-400 g/m<SP>2</SP>weight, 0.05-400 cc/cm<SP>2</SP>/sec air permeability measured by a Frazier method, and 30-95% porosity. COPYRIGHT: (C)2006,JPO&NCIPI
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