| 摘要 |
PURPOSE:To provide a base material for medical vessel provided with transparency, softness, and heat resistance by using a formation layer which consists of a polymer composition of a crystalline polypropylene based polymer and polybutene based amorphous polymer. CONSTITUTION:A base material favorable for use as soft vessel (bag) for storaging and preserving pharmaceutical liquid or a tube for transport of pharmaceutical liquid is formed from a formation layer which consists of a polymer composition of a crystalline polypropylene based polymer and polybutene based amorphous polymer. The crystalline polyprolylene based polymer mixes with the soft polybutene based amorphous polymer with good compatibility, and thereby the composition is good in transparency. Example of the crystalline polypropylene based polymer is isostatic polypropylene produced by the use of a stereospecific polymerization catalyst while example of the polybutene based amorphous polymer is a one which chiefly contains butene-1. |
