| 摘要 |
PROBLEM TO BE SOLVED: To provide parts for a toilet seat high in practicability, comprising a propylene polymer which is excellent in abrasion-resistance and free from degradation of the surface appearance by repeated rubbing with a cloth or a paper in cleaning works, and excellent in antifouling property in which firmly attached dirt such as line deposit can be easily removed with light wiping. SOLUTION: These parts of the toilet seat comprise a formed body of a propylene polymer composition having 0.05-3 pts.wt. of a crystal core agent blended in 100 pts.wt. of propylene polymer or 100 pts.wt., of propylene polymer containing 0.1-10 wt.% poly-siloxane, and its degree of crystallization of a surface layer measured by a reflection X-ray diffraction method is not less than 60%.
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