Low density ethylene-based polymer compositions with high melt strength and mid-high density control
US9828496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2014 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Oct 26, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/066
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and a second ethylene-based polymer, formed by a high pressure, free-radical polymerization process, such composition comprising the following properties: a) a melt index (12) from 2.0 to 10 dg/min; b) a density from 0.922 to 0.935 g/cc; and wherein the second ethylene-based polymer is present in an amount from 60 to 95 weight percent, based on the sum of the weight of the first polymer and the second polymer; and wherein the second ethylene-based polymer has a density greater than, or equal to, 0.924 g/cc; and wherein the first ethylene-based polymer has a melt index less than 2.5 dg/min.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.