PURPOSE: To obtain a vessel which can transfer heat by surface contact between the bottom of the vessel and a heat transfer plate and is adapted for drying by freezing by forming a flat bottom vessel having a flat bottom of amorphous annular polyolefin containing the structure in the state assembled in a molecular main chain.
CONSTITUTION: This vessel adapted for a vessel for preserving drugs with a flat bottom is formed of an amorphous thermoplastic resin of a polyolefin containing an annular structure as the essential constituent unit of molecular main chain, and a copolymer with 1-olefin, a polymer by hydrogen addition ring-opening polymerization of norbornene or the like, or a condensed polycyclic structure is used. As this polycyclic structure, one or more types of a bond unit represented by the general formula represented separately is used. In the formula, R1-R12 are selected from hydrogen, an alkyl group or a halogen, and may be different from each other. Further, one or more selected from R9 and R10 may form a ring together with one or more selected from R11 and R12. n is number of '0' or more.
KIKUCHI MASAHIKO
HAMAMOTO KEIJI
KOBAYASHI HIDEO
DAIICHI SEIYAKU CO