Heterophasic copolymers and sequential polymerization
US10119016B2 · kind B2 · utility
12Cited by
27References
25Claims
0Family size
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Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jul 7, 2037 |
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.