Title:
環状オレフィンポリマーの製造方法
Document Type and Number:
Japanese Patent JP6886955
Kind Code:
B2
Abstract:
The present invention provides a method for producing a cyclic olefin polymer which is capable of stably producing a cyclic olefin polymer with a desired yield that is commensurate with the polymerization conditions in cases where the cyclic olefin polymer is produced using a transition metal complex catalyst such as a metallocene catalyst. In a method for producing a cyclic olefin polymer according to the present invention, wherein a monomer that contains a norbornene compound containing an epoxide impurity is polymerized in the presence of a transition metal catalyst, a crude norbornene compound containing an epoxide impurity is treated with use of a hybrid adsorbent that is composed of a mixture of active alumina and zeolite so as to reduce the amount of the epoxide impurity in the monomer, thereby setting the ratio (mass ppm/mass ppm) of the content of the epoxide impurity and the content of the catalyst relative to the total mass of a polymerization solution that is subjected to the polymerization to 6 or less.
Inventors:
Tomoyuki Tada
Hiroyuki Komatsu
Shinji Yamada
Hiroyuki Komatsu
Shinji Yamada
Application Number:
JP2018190432A
Publication Date:
June 16, 2021
Filing Date:
October 05, 2018
Export Citation:
Assignee:
Polyplastics Co., Ltd.
International Classes:
C08F32/04; C07C7/12; C08F2/00; C08F232/04
Domestic Patent References:
| JP5132523A | ||||
| JP2016522309A |
Other References:
UOP LLC,UOP Adsorbents; Purification of olefin and polymer process streams,米国,Honeywell,2011年 7月,pp.5-9
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi