Polypropylene composition and preparation method thereof, and film or sheet prepared from the polypropylene composition and use thereof
US10723869B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 14, 2016 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polypropylene composition, a preparation method thereof, and a film or a sheet prepared from the polypropylene composition and use thereof. The composition includes 45 parts to 75 parts of a polypropylene, 10 parts to 35 parts of an elastomer, 5 parts to 20 parts of a polyethylene, 0.1 parts to 0.5 parts of an antioxidant, and 0.1 parts to 0.5 parts of a lubricant. A half peak width of a crystallization peak of the polypropylene is 5° C. to 10° C., and a peak temperature of the crystallization peak of the polypropylene is 105° C. to 115° C. The polypropylene composition has a good tenacity, especially a−30° C. low-temperature impact performance. The film or the sheet prepared from the composition and applied to automotive interior parts, can enable the external accessories not only to be less likely to generate sharp fragments while being strongly impacted, but also to have a matte characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.