| 摘要 |
This invention provides a medical tube comprising a propylene polymer composition (A). The propylene polymer composition (A) contains a polymer comprising propylene units, and at least a part of the propylene unit-containing polymer has an isotactic structure. The content of the propylene unit based on 100% by mole in total of all the structural units of the propylene unit-containing polymer contained in the composition (A) is 65 to 82% by mole. The medical tube satisfies the following (a1), (a2) and (b1): (a1) a tensile modulus of elasticity of 5 to 25 MPa as measured according to JIS K 6301; (a2) a needle penetration temperature of 120ºC or above as measured according to JIS K 7196; and (b1) a distance (H) of not more than 60 mm as determined by preparing a tube having a size of 2. 1 mm in inner diameter, 3.5 mm in outer diameter, and 20 cm in length from the composition (A), inserting both ends of the tube into a tool having a hollow hole having a size of 10 mm in diameter x 5 mm in height, forming a loop, pulling down both ends of the tube, and measuring the distance (H) from the upper surface of the tool to the upper end of the loop at the time when the loop has kinked. |
