Title:
成形体および医療用容器
Document Type and Number:
Japanese Patent JP7309461
Kind Code:
B2
Abstract:
To provide a molding and a medical container which exhibit less discoloration due to irradiation with an electron beam or gamma rays and are excellent in transparency.SOLUTION: The molding comprises a cyclic olefin copolymer composition (Q) containing: a cyclic olefin copolymer (P) having a constituent unit (A) derived from a C2-20 α-olefin and a constituent unit (C) derived from a cyclic olefin having an aromatic ring; and a stabilizer (B). The content of the stabilizer (B) is 0.0001 pt.mass or more and 0.3 pt.mass or less based on 100 pts.mass of the cyclic olefin copolymer (P). The total content of the constituent unit (A) and the constituent unit (C) in the cyclic olefin copolymer (P) is 93 mol% or more.SELECTED DRAWING: None
Inventors:
Tadashi Fujimura
Makoto Nakano
What family
Makoto Nakano
What family
Application Number:
JP2019104998A
Publication Date:
July 18, 2023
Filing Date:
June 05, 2019
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C08L23/02; C08K5/13; C08K5/3435; C08K5/49; C08L45/00
Domestic Patent References:
| JP10130402A | ||||
| JP2008174679A | ||||
| JP2008144013A | ||||
| JP2007119509A | ||||
| JP2173013A | ||||
| JP1185307A | ||||
| JP3172308A | ||||
| JP2005054123A | ||||
| JP2018012746A | ||||
| JP2020105332A | ||||
| JP2022054983A | ||||
| JP2021054905A |
Foreign References:
| WO2007088941A1 | ||||
| WO2017033968A1 | ||||
| WO2008068897A1 | ||||
| WO2020241288A1 |
Attorney, Agent or Firm:
Shinji Hayami