Invention Grant
- Patent Title: Multimodal copolymer of ethylene and at least two alpha-olefin comonomers and final articles made thereof
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Application No.: US15579377Application Date: 2016-05-30
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Publication No.: US11572461B2Publication Date: 2023-02-07
- Inventor: Ravindra Tupe , John Jamieson , Jarmo Kela , Alexandra Romina Albunia , Ricardo Godoy-Lopez , Markku Vahteri
- Applicant: BOREALIS AG
- Applicant Address: AT Vienna
- Assignee: BOREALIS AG
- Current Assignee: BOREALIS AG
- Current Assignee Address: AT Vienna
- Agency: Thomas Horstemeyer, LLP
- Priority: EP15171420 20150610
- International Application: PCT/EP2016/062128 WO 20160530
- International Announcement: WO2016/198273 WO 20161215
- Main IPC: C08L23/08
- IPC: C08L23/08 ; C08J5/18 ; C08F210/16 ; B32B27/32 ; B32B27/08 ; C08F2/00

Abstract:
The present invention is directed to a multimodal polyethylene copolymer comprising a first and a second copolymer of ethylene and at least two alpha-olefin comonomers. Such multimodal copolymers are highly suitable for conversion processes that require a high Draw Down Ratio, like the production of thin films. Such multimodal polyethylene copolymers provide a good impact strength in the sense of a high Dart drop impact strength (DDI) and good isotropy of the films produces thereof. The invention further presents final articles such as films made therefrom.
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