Title:
METHOD FOR PRODUCING CYCLIC OLEFIN-BASED RESIN MOLDED PRODUCT
Document Type and Number:
Japanese Patent JP2019126955
Kind Code:
A
Abstract:
To provide a method for producing a cyclic olefin-based resin molded product that can suppress a contamination of black spots into the molded product due to oxidative degradation of the resin while suppressing an introduction cost and is excellent in product yield during continuous operation.SOLUTION: A cyclic olefin resin composition includes a cyclic olefin resin [A], a hindered amine compound [B], and a phenol compound [C]. When a total content of a cyclic olefin resin [A] in the cyclic olefin resin composition, the hindered amine compound [B] and the phenol compound [C] is 100 mass%, a content of the hindered amine compound [B] is 0.05 mass% or more and 5 mass% or less, and the content of the phenolic compound [C] is 0.05 mass% or more and 2 mass% or less, and an oxygen concentration at a supply port 15 of a cylinder 10 when the cyclic olefin resin composition is melted using a screw 20 is 10 vol.% to 30 vol.%.SELECTED DRAWING: Figure 1
Inventors:
FUJIMURA FUTOSHI
OKUNO TAKAYUKI
KIZU KOICHI
OKUNO TAKAYUKI
KIZU KOICHI
Application Number:
JP2018009420A
Publication Date:
August 01, 2019
Filing Date:
January 24, 2018
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
B29C45/00; B29C45/18; B29C45/74; C08K5/13; C08K5/17; C08L45/00
Foreign References:
| WO2008047468A1 | 2008-04-24 |
Attorney, Agent or Firm:
Shinji Hayami