US 11,732,075 B2
Cyclic olefin-based copolymer, cyclic olefin-based copolymer composition, molded article, and medical container
Hideki Wasa, Sodegaura (JP); Haruka Saito, Chiba (JP); Sunil Krzysztof Moorthi, Ichihara (JP); Futoshi Fujimura, Ichihara (JP); Masahiko Okamoto, Chiba (JP); Emi Oniki, Sodegaura (JP); Kouichi Kizu, Chiba (JP); and Jiacheng He, Chiba (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Appl. No. 16/766,838
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Nov. 27, 2018, PCT No. PCT/JP2018/043621
§ 371(c)(1), (2) Date May 26, 2020,
PCT Pub. No. WO2019/107363, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 2017-228675 (JP), filed on Nov. 29, 2017; and application No. 2018-138691 (JP), filed on Jul. 24, 2018.
Prior Publication US 2020/0369812 A1, Nov. 26, 2020
Int. Cl. C08F 210/02 (2006.01); C08F 232/08 (2006.01); C08F 232/00 (2006.01); A61J 1/05 (2006.01); B65D 65/38 (2006.01); B65D 85/00 (2006.01); G02B 1/04 (2006.01); A61J 1/06 (2006.01); A61J 1/10 (2006.01)
CPC C08F 232/00 (2013.01) [A61J 1/05 (2013.01); B65D 65/38 (2013.01); B65D 85/70 (2013.01); G02B 1/041 (2013.01); A61J 1/06 (2013.01); A61J 1/10 (2013.01); C08F 210/02 (2013.01); C08F 232/08 (2013.01); C08F 2800/10 (2013.01)] 22 Claims
 
1. A cyclic olefin-based copolymer comprising:
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 in a case where an injection molding sheet having a thickness of 1.0 mm is prepared using the cyclic olefin-based copolymer, an Abbe number (ν) of the injection molding sheet is equal to or greater than 35 and equal to or smaller than 55.