Polypropylene composition and molded article
US11459454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2019 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Jul 6, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polypropylene composition made from or containing a polymer made from or containing: (i) component (1) made from or containing a propylene homopolymer having MFR of 100 to 300 (at a temperature of 230° C. under a load of 2.16 k(g) and containing more than 97.5% by weight of xylene insolubles (XI), wherein XI has a Mw/Mn of 4 to 10; (ii) component (2) made from or containing an ethylene/propylene copolymer containing 15 to 50% by weight of an ethylene-derived unit; wherein 1) relative proportions of component (1) and component (2) are, respectively, not less than 50 parts by weight but less than 70 pbw and more than 30 pbw but not more than 50 pbw, 2) intrinsic viscosity of xylene solubles (XSIV) of the polymer is in the range of 1.5 to 4.0 dl/g, 3) MFR of the polymer is in the range of 20 to 100 g/10 min.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.