Title:
4-METHYL-1-PENTENE-BASED COPOLYMER COMPOSITION, AND MOLDED BODY AND FILM COMPRISING THE 4-METHYL-1-PENTENE-BASED COPOLYMER COMPOSITION
Document Type and Number:
Japanese Patent JP2023108944
Kind Code:
A
Abstract:
To provide a molded body which, while maintaining releasability and transparency characteristic of a 4-methyl-1-pentene-based copolymer, is suppressed from deformation at the time of heating by improving high temperature rigidity (storage elastic modulus) and further is suppressed from shrinkage after molding, and to provide a copolymer composition therefor.SOLUTION: Provided is a 4-methyl-1-pentene-based copolymer composition (X) which contains 0.1 pt.mass to 10 pts.mass of a nucleating agent (B) relative to 100 pts.mass of a 4-methyl-1-pentene-based copolymer (A) and which satisfies the following requirements (a) and (b). Requirement (a): the temperature at which a loss tangent (tanδ) becomes maximum is 0°C to 60°C, as determined by a dynamic viscoelasticity measurement (frequency=10 rad/s(1.6 Hz)) of (X) at -40 to 150°C. Requirement (b): a loss tangent at 50°C is 6×106 Pa or more, as determined by a dynamic viscoelasticity measurement (frequency=10 rad/s(1.6 Hz)) of (X) at -40 to 150°C.SELECTED DRAWING: None
More Like This:
Inventors:
UEKUSA TAKAYUKI
FUKAGAWA KATSUMASA
FUKAGAWA KATSUMASA
Application Number:
JP2022010271A
Publication Date:
August 07, 2023
Filing Date:
January 26, 2022
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
C08L23/20; C08K5/06; C08K5/20; C08K5/5333
Attorney, Agent or Firm:
Patent Attorney Corporation SS International Patent Office
Previous Patent: screw manufacturing system
Next Patent: Information processing device, information processing method, and program
Next Patent: Information processing device, information processing method, and program