Heterophasic propylene copolymer with improved properties for injection molding applications
US8580890B2 · kind B2 · utility
1Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2009 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Oct 3, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1386
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention concerns a heterophasic propylene copolymer of high melt flow for injection molding, which comprise a propylene polymer matrix and a rubber. The heterophasic propylene copolymers of the present invention are characterized by a high viscosity of the rubber phase and a well-defined ratio of the intrinsic viscosities of the rubber phase and the propylene polymer matrix, thus resulting in improved mechanical properties. The present invention further relates to a process for the production of such heterophasic propylene copolymers, their use and articles produced with them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.