ULTRA-HIGH-MOLECULAR-WEIGHT PROPYLENE (CO)POLYMER

Title:

ULTRA-HIGH-MOLECULAR-WEIGHT PROPYLENE (CO)POLYMER

Document Type and Number:

WIPO Patent Application WO/2020/255872

Kind Code:

A1

Abstract:

Provided are: a propylene homopolymer; or a copolymer composed of propylene and at most 30 wt% of α-olefin having 2 or 4 to 8 carbon atoms, the homopolymer or the copolymer having an intrinsic viscosity of more than 20 dl/g as measured in a tetralin solvent at 135°C.

Inventors:

OTSUBO AKIHIRO (JP)
KAMIMURA AKIHIRO (JP)

Application Number:

PCT/JP2020/023195

Publication Date:

December 24, 2020

Filing Date:

June 12, 2020

Export Citation:

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Assignee:

SUNALLOMER LTD (JP)
SHOWA DENKO KK (JP)

International Classes:

C08F10/06; C08F4/654; C08L23/12; C08L23/14

Domestic Patent References:

WO2010079799A1	2010-07-15
WO1997020869A1	1997-06-12

Foreign References:

JPH05293821A	1993-11-09
JPH0657055A	1994-03-01
US20150266981A1	2015-09-24
US20150266981A1	2015-09-24
JP2002520426A	2002-07-09
EP0674991B1	1999-02-17
JP2011500907A	2011-01-06
US4399054A	1983-08-16

Other References:

NORIO KASHIWA; TOSHIYUKI TSUTSUI: "Evolution of catalysts and processes and recent trends in catalyst research", PLASTIC AGE, vol. 36, no. 3, 1 March 1990 (1990-03-01), JP , pages 137 - 144, XP009532547, ISSN: 0551-0503
FILIATRAULT D, DELMAS G.: "Intrinsic Viscosities and Huggins' Constant for Ethylene-Propylene Copolymers. 2. Effect of the Steric Hindrance of the Solvent on the Solvent Quality. Viscosities in Branched Alkanes, Cycloalkanes, Tetraalkyltin Compounds, cis- and trans-Bicyclo[4.4.0]decane, and Tetrahydronaphthalene", MACROMOLECULES- ETHYLENE-PROPYLENE COPOLYMERS 69, vol. 12, no. 1, 1979, pages 69 - 74, XP055773679

Attorney, Agent or Firm:

YAMAMOTO, Osamu et al. (JP)

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