Propylene ethylene polymers and production process
US7232871B2 · kind B2 · utility
39Cited by
251References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2002 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | May 14, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/65912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolymers are made in the presence of a metallocene catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.