High melt flow propylene impact copolymer and method
US8067510B2 · kind B2 · utility
14Cited by
13References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 23, 2009 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Feb 16, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymerization reactor to form the propylene impact copolymer with a melt flow rate greater than about 60 g/10 min. The production of the high melt flow propylene impact copolymer may occur in one or more polymerization reactors, utilizing standard hydrogen concentration, and no visbreaking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.