Magnesium chloride particles with a truncated structure, catalytic component supported on these particles, polyolefins obtained by employing this catalytic component, procedures for manufacturing these products
US5212133A · kind A · utility
16Cited by
1References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Feb 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/909
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Porous particles of MgCl.sub.2 which have essentially the shape of two truncated right cones connected by their larger bases, which truncated cones are incurved towards the axis of symmetry perpendicular to the bases, at the intersection of the envelope of the truncated cones with two orthogonal planes passing through the said axis of symmetry. These particles are impregnated with a transition metal compound and employed as a catalytic component in the polymerization of olefins. The resultant polyolefins, especially polyethylene, polypropylene and their copolymers, are comprised of particles with a distinctive structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.