| abstract |
The present invention is transparency, flexibility, heat resistance. Provided is a medical tube comprising a good balance of scratch resistance, rubber elasticity and an excellent propyl polymer composition and a propylene polymer composition. The propylene polymer composition according to the present invention is characterized by satisfying all of the following (A), (B), (C) and (D). (C) In the dynamic viscoelasticity measurement (10 rad / s) in the torsion mode, the peak has a loss tangent (tanδ) in the range of -20 ° C to -25 ° C, and the value is 0.5 or more, and (D) The storage modulus G obtained from the dynamic viscoelasticity measurement is in the range of 1.0 × 10 7 to 4.9 × 10 8 dyn / cm 2 at 20 ° C., and (C) the needle penetration temperature (° C.) measured according to JIS K7196 is 60 ° C. to 160. It is (degreeC) and (D) 100% distortion is given at 30 mm of chuck | zipper wheels, and 30 mm / min of tensile velocity, and after hold | maintaining for 10 minutes, residual distortion after 10 minutes of load removal is 30% or less. The present invention is a medical tube comprising the propylene-based polymer composition.n n n n Propylene-based polymer, medical tube |