| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid supply member which has excellent stability and is suppressed of the degradation in lifetime while being practically used for washing water and rinsing water containing various kinds of additives. SOLUTION: The liquid supply member is formed by incorporating one or more primary antioxidants into a polypropylene resin, in which the primary antioxidants are phenolic antioxidants of a melting point≥70°C and a molecular weight≥500 and the content thereof is≥0.03 mass%. Also, the liquid supply member is formed by incorporating one or more primary antioxidants into a polymer containing polypropylene and polyethylene 4 to 10 mass%. COPYRIGHT: (C)2004,JPO
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