Metallocene-catalyzed polyethylene
US10053522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2012 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Dec 29, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A metallocene-catalyzed polyethylene resin having a multimodal molecular weight and composition distribution, comprising from 45% by weight to 75% by weight of a low density fraction, said fraction having a density below or equal to 918 g/cm3 as measured following the method of standard test ISO 1183 at a temperature of 23° C.,wherein the density of the polyethylene resin is from 0.920 to 0.945 g/cm3,wherein the Mw/Mn of the polyethylene is of from 2.8 to 6,wherein the melt index MI2 of the polyethylene resin of from 0.1 to 5 g/10 min measured following the method of standard test ISO 1133 Condition D at a temperature of 190° C. and under a load of 2.16 kg; andwherein the composition distribution breadth index (CDBI) of the polyethylene resin is below 70%, as analyzed by quench TREF (temperature rising elution fractionation) analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.