Polyolefin compositions having high rigidity and high impact resistance
US4742106A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1987 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Feb 2, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyolefin composition having a high rigidity and a high impact resistance, said polyolefin composition comprising: PA0 (a) 10-96% by weight of a propylene polymer; PA0 (b) 2-30% by weight of an ethylene/.alpha.-olefin copolymer obtained by copolymerizing ethylene with an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst consisting essentially of a solid material and an organoaluminum compound, said solid material containing magnesium and titanium and/or vanadium, and said ethylene/.alpha.-olefin copolymer having the following properties (i)-(iv): ______________________________________ (i) Melt index 0.01-100 g/10 min (ii) Density 0.860-0.910 g/cm.sup.3 (iii) Maximum peak temperature not lower than as measured according to 100.degree. C. a differential scanning calorimetry (DSC) (iv) Insolubles in boiling not less than 10 n-hexane wt. % ______________________________________ PA0 (c) 20-60% by weight of a mica, provided the toal amount of said components (a), (b) and (c) is 100% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.