Multimodal copolymer of ethylene and at least two alpha-olefin comonomers and final articles made thereof
US11572461B2 · kind B2 · utility
1Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2016 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | May 30, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.