Propylene polymer composition and thermoformed object
US5986008A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Sep 1, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is to provide a propylene polymer composition capable of producing heat molded products having excellent balance between rigidity and impact resistance and to provide heat molded products produced from the composition, such as films and pipes. The propylene polymer composition comprises 10 to 90% by weight of a propylene polymer (A) and 90 to 10% by weight of a propylene polymer (B). The propylene polymer (A) has MFR.sub.A (measured at 230.degree. C. under a load of 2.16 kg) of 0.001 to 8 g/10 min, Tm (measured by a differential scanning calorimeter) of 95 to 145.degree. C. and a density (d.sub.A) of 885 to 905 kg/M.sup.3, and in this polymer, the content of constituent units derived from an .alpha.-olefin of 4 to 20 carbon atoms is in the range of 1.5 to 11% by mol. The propylene polymer (B) has MFR.sub.B (measured at 230.degree. C. under a load of 2.16 kg) of 0.1 to 600 g/10 min, Tm (measured by a differential scanning calorimeter) of 145 to 170.degree. C., a density (d.sub.B) of 905 to 916 kg/m.sup.3, and in this polymer, the content of constituent units derived from an (.alpha.-olefin of 4 to 20 carbon atoms is in the range of 0 to 2% by mol. The MFR.sub.A…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.