Heterophasic copolymers and sequential polymerization
US9738779B2 · kind B2 · utility
12Cited by
24References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 29, 2016 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Apr 29, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to heterophasic copolymers of propylene and an alpha olefin comonomer having a high fill phase content (≧15%), and heterophasic polymerization processes using a single site catalyst system with a support having high average particle size (PS≧30 μm), high surface area (SA≧400 m2/g), low pore volume (PV≦2 mL/g), and a mean pore diameter range of 1≦PD≦20 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.