| abstract |
The present invention relates to supported nonmetallocene catalysts, their preparation and their use. The supported nonmetallocene catalysts of the present invention can be prepared in a simple and industrially viable manner and exhibit significant comonomer effects. The polyolefins (in particular ethylene polymers) prepared according to the invention are characterized by excellent particle morphology, high bulk density and specific surface area, various pore structures, favorable particle size distribution and molecular weight distribution and are used as starting materials in the direct preparation of chlorinated polyolefins Are particularly suitable for the following. |