Patent ID: 7388051
Filing Date: 2008-06-17
Classification: A61L,C08L,Y10T

Abstract:
1. A propylene polymer composition satisfying all the following properties (A), (B), (C) and (D): (A) the composition shows a loss tangent (tan) peak at a temperature in the range of −20 to 25° C. according to dynamic viscoelasticity measurement (10 rad/s) in a torsion mode, and the peak value is 0.5 or above; (B) the storage elastic modulus G′ at 20° C. from the dynamic viscoelasticity measurement is in the range of 1.0×10 (C) the penetration temperature (° C.) determined in accordance with JIS K 7196 is in the range of 60 to 160° C.; and (D) the composition has a permanent set of not more than 20% as determined after the composition fixed between chucks 30 mm apart is 100% strained at a stress rate of 30 mm/min, maintained for 10 minutes and released for 10 minutes.