Title:
PROPYLENE-BASED POLYMER COMPOSITION, METHOD FOR PRODUCING PROPYLENE-BASED POLYMER COMPOSITION, AND BIAXIALLY ORIENTED FILM
Document Type and Number:
WIPO Patent Application WO/2023/079785
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a propylene-based polymer composition from which it is possible to obtain a biaxially oriented film having a relatively high heat resistance; a method for producing said propylene-based polymer composition; and a biaxially oriented film having a relatively high heat resistance. A propylene-based polymer composition according to the present invention contains a propylene-based polymer and satisfies requirements (1)-(4). (1) Having a melt flow rate of 2-10 g/10 min., as measure at a temperature of 230°C with a load of 2.16 kg. (2) Having an isotactic pentad fraction of 98.0% or more. (3) Satisfying formula (I): 3.0≤Mw/Mn≤20.
(4) Satisfying formula (II): (Mw(CXS)/Mn(CXS))/(Mw/Mn)≤0.70.
Inventors:
INOUE NAO (JP)
TAKANO MASATO (JP)
TAKANO MASATO (JP)
Application Number:
PCT/JP2022/024118
Publication Date:
May 11, 2023
Filing Date:
June 16, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C08F10/06; C08J5/18; C08L23/10
Domestic Patent References:
| WO2017221781A1 | 2017-12-28 |
Foreign References:
| JP2020105358A | 2020-07-09 | |||
| JP2020105356A | 2020-07-09 | |||
| JP2005534761A | 2005-11-17 | |||
| JP2018095698A | 2018-06-21 | |||
| JPS6053510A | 1985-03-27 | |||
| JPH1087730A | 1998-04-07 | |||
| JP2022073267A | 2022-05-17 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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