Bimodal propylene polymers and sequential polymerization
US9809664B2 · kind B2 · utility
12Cited by
23References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2016 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Apr 29, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/09
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to high porosity (≧15%) and/or low pore diameter (PD<165 μm) propylene polymers and propylene polymerization processes using single site catalyst systems with supports having high surface area (SA≧400 m2/g), low pore volume (PV≦2 mL/g), a specific mean pore diameter range (PD=1-20 nm), and high average particle size (PS≧30 μm).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.