Copolymers and films thereof
US8242220B2 · kind B2 · utility
6Cited by
0References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2007 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jul 15, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymer of ethylene and an alpha-olefin having (a) a density in the range 0.900-0.940 g/cm3, (b) a melt index MI2 (2.16 kg, 190° C.) in the range of 0.01-50 g/10 min, (c) a molecular weight distribution (Mw/Mn) in the range 3.5 to 4.5, and (d) a melt elastic modulus G′(G″=500 Pa) in the range 40 to 150 Pa. The copolymer has a melt index MI2 (2.16 kg, 190° C.) Dow Rheology Index (DRI) and melt elastic modulus G′(G″=500 Pa) satisfying the equations of [DRI/MI2]>0 and [DRI/MI2]<0.0225G′−0.745.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.