Polypropylene compounds with high impact performance and improved stress whitening resistance
US9115279B2 · kind B2 · utility
0Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2014 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Mar 18, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/035
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to polypropylene compositions with a balance of high strength, good clarity, excellent stress whitening resistance, and excellent impact properties—especially at low temperatures—for use in demanding plastics applications. Blends consist of both homopolymer and random copolymer polypropylene fractions, as well as propylene-ethylene elastomers and styrenic based elastomers. The invention also covers molded articles made from these blends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.