Cyclic olefin-based copolymer, cyclic olefin-based copolymer composition, molded article, and medical container

Patent metadata

Field	Value
Publication number	US-12240930-B2
Application number	US-202318157892-A
Country	US
Kind code	B2
Filing date	Jan 23, 2023
Priority date	Nov 29, 2017
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

Described is a cyclic olefin-based copolymer has a constitutional unit (A) derived from an α-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring. Also described is a medical container containing a cyclic olefin-based copolymer having a constitutional unit (A) derived from an α-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring.

First claim

The invention claimed is:

1. A medical container comprising:
a cyclic olefin-based copolymer having a constitutional unit (A) derived from an α-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring,
wherein the cyclic olefin having an aromatic ring contains at least one kind of compound selected from benzonorbornadiene, indene norbornene, and methyl phenyl norbornene.

2. The medical container according to claim 1 ,
wherein in a case where a total content of the constitutional unit (A), the constitutional unit (B), and the constitutional unit (C) in the cyclic olefin-based copolymer is 100 mol %, a content of the constitutional unit (C) in the cyclic olefin-based copolymer is equal to or greater than 0.1 mol % and equal to or smaller than 50 mol %.

3. The medical container according to claim 1 ,
wherein in a case where a total content of the constitutional unit (B) and the constitutional unit (C) in the cyclic olefin-based copolymer is 100 mol %, a content of the constitutional unit (C) in the cyclic olefin-based copolymer is equal to or greater than 5 mol % and equal to or smaller than 95 mol %.

4. The medical container according to claim 1 ,
wherein in a case where a total content of the constitutional unit (A), the constitutional unit (B), and the constitutional unit (C) in the cyclic olefin-based copolymer is 100 mol %, a content of the constitutional unit (A) in the cyclic olefin-based copolymer is equal to or greater than 10 mol % and equal to or smaller than 80 mol %.

5. The medical container according to claim 1 ,
wherein the cyclic olefin without an aromatic ring contains a compound represented by the following Formula (B-1),

in Formula [B-1], n is 0 or 1, m is 0 or a positive integer, q is 0 or 1, R 1 to R 18 , R a , and R b each independently represent a hydrogen atom, a halogen atom, or a hydrocarbon group which may be substituted with a halogen atom, R 15 to R 18 may form a monocyclic ring or a polycyclic ring by being bonded to each other, the monocyclic ring or the polycyclic ring may have a double bond, R 15 and R 16 or R 17 and R 18 may form an alkylidene group, and the compound represented by Formula [B-1] does not have an aromatic ring.

6. The medical container according to claim 1 ,
wherein a glass transition temperature (Tg) of the cyclic olefin-based copolymer measured using a differential scanning calorimeter (DSC) is equal to or higher than 120° C. and equal to or lower than 180° C.

7. The medical container according to claim 1 that is a syringe or a liquid medicine storage container.

Assignees

• Mitsui Chemicals Inc

Inventors

• WASA Hideki
• Saito Haruka
• Moorthi Sunil Krzysztof
• Fujimura Futoshi
• Okamoto Masahiko
• Oniki Emi
• Kizu Kouichi
• He Jiacheng

Classifications

• C08F232/08 Primary

  having condensed rings (coumarone-indene polymers C08F244/00) · CPC title

• C08F210/02

  Ethene · CPC title

• G02B1/041

  Lenses · CPC title

• C08F2800/10

  as molar percentages · CPC title

• B65D85/70

  for materials not otherwise provided for · CPC title