Title:
POLYPROPYLENE RESIN COMPOSITION CONTAINING ULTRA-HIGH-MOLECULAR-WEIGHT PROPYLENE (CO)POLYMER
Document Type and Number:
WIPO Patent Application WO/2020/255873
Kind Code:
A1
Abstract:
Provided is a polypropylene resin composition that contains the components (A1) and (A2) indicated below and in which the content of the component (A1) is 0.1-10 wt% and the content of the component (A2) is 99.9-90 wt% with respect to the total amount of the two components. The component (A1) is a propylene homopolymer or a copolymer of propylene and 30 wt% or less of an α-olefin having 2 or 4-8 carbon atoms, and said propylene homopolymer or copolymer has a limiting viscosity greater than 20 dl/g when measured in a tetralin solvent at 135ºC. The component (A2) has a MFR (230ºC, load of 2.16 kg) of 1-500 g/10 min. The component (A2) is a polymer selected from the group consisting of (A2-1) a propylene homopolymer, (A2-2) a random copolymer of propylene and an α-olefin having 2 or 4-8 carbon atoms, (A2-3) a block copolymer of propylene and an α-olefin having 2 or 4-8 carbon atoms, and combinations thereof.
Inventors:
YOKOYAMA YUTAKA (JP)
KAJIOKA HIROSHI (JP)
KAMIMURA AKIHIRO (JP)
AKINAGA SHUJI (JP)
KAJIOKA HIROSHI (JP)
KAMIMURA AKIHIRO (JP)
AKINAGA SHUJI (JP)
Application Number:
PCT/JP2020/023196
Publication Date:
December 24, 2020
Filing Date:
June 12, 2020
Export Citation:
Assignee:
SUNALLOMER LTD (JP)
SHOWA DENKO KK (JP)
SHOWA DENKO KK (JP)
International Classes:
C08F10/06; C08F4/654; C08L23/10
Domestic Patent References:
| WO1997020869A1 | 1997-06-12 | |||
| WO2010079799A1 | 2010-07-15 |
Foreign References:
| JPH05293821A | 1993-11-09 | |||
| JPH0657055A | 1994-03-01 | |||
| JP2002520426A | 2002-07-09 | |||
| US20150266981A1 | 2015-09-24 | |||
| EP0674991B1 | 1999-02-17 | |||
| JP2011500907A | 2011-01-06 | |||
| US4399054A | 1983-08-16 |
Other References:
See also references of EP 3985035A4
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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