Title:
POLYETHYLENE COMPOSITION AND FILM HAVING OUTSTANDING PROPERTIES
Document Type and Number:
WIPO Patent Application WO/2020/012301
Kind Code:
A3
Abstract:
A polyethylene composition comprises a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of < 2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 50,000 to 200,000 and a molecular weight distribution Mw/Mn of < 2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 200,000 and a molecular weight distribution Mw/Mn of < 2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a composition distribution breadth index, CDBI50 obtained from a crystallization elution fractionation (CEF) analysis of < 45 weight %. Film made from the polyethylene composition may have a machine direction 1% secant modulus of ≥ 200 MPa (at a film thickness of about 1 mil), a seal initiation temperature (SIT) of ≤ 85° (at a film thickness of about 2 mil), an area of hot tack window (AHTW) of ≥ 220 Newtons.C° (at a film thickness of about 2 mil), an oxygen transmission rate (OTR) of ≥ 600 cm3 per 100 inch2 (at a film thickness of about 1 mil), a dart impact strength of ≥ 400 g/mil, and a machine direction (MD) tear strength of ≥ 400 g/mil.
Inventors:
WANG XIAOCHUAN (CA)
ZORICAK PETER (CA)
MOLLOY BRIAN (CA)
WANG QINYAN (CA)
VANASSELDONK LAWRENCE (CA)
AUBEE NORMAN (CA)
ZORICAK PETER (CA)
MOLLOY BRIAN (CA)
WANG QINYAN (CA)
VANASSELDONK LAWRENCE (CA)
AUBEE NORMAN (CA)
Application Number:
PCT/IB2019/055695
Publication Date:
April 30, 2020
Filing Date:
July 03, 2019
Export Citation:
Assignee:
NOVA CHEM INT SA (CH)
International Classes:
C08F210/16; C08J5/18; C08L23/08
Domestic Patent References:
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Foreign References:
| US9963529B1 | 2018-05-08 |
Other References:
"CPP//BOPP Laminated Structure Including Hydrocarbon Resins", IP.COM JOURNAL, IP.COM INC., WEST HENRIETTA, NY, US, 21 February 2017 (2017-02-21), XP013174446, ISSN: 1533-0001
NILESH C SHAH ET AL: "Multilayer Film", IP.COM JOURNAL, IP.COM INC., WEST HENRIETTA, NY, US, 17 October 2016 (2016-10-17), XP013173201, ISSN: 1533-0001
NILESH C SHAH ET AL: "Multilayer Film", IP.COM JOURNAL, IP.COM INC., WEST HENRIETTA, NY, US, 17 October 2016 (2016-10-17), XP013173201, ISSN: 1533-0001
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