2 TWO ATOM BRIDGED DICARBONATE COMPOUNDS AS INTERNAL DONORS IN CATALYSTS FOR POLYPROPYLENE MANUFACTURE

摘要

The present invention relates to a composition containing magnesium, titanium and a halogen, Wherein R ₁ is independently in each occurrence an aliphatic or aromatic hydrocarbon or a substituted hydrocarbon group containing from 1 to 20 carbon atoms, x is from 2 to 4, R ₂ is an aliphatic or aromatic hydrocarbon, or from 1 to 20 being one substituted hydrocarbon odd containing carbon atoms, with the proviso of claim ₁ R 1 -OC (O) -O- group and a 2 R ₁ -OC (O) is present two atoms in the shortest chain linking -O- groups Insoluble / RTI catalyst component of a solid useful for olefin polymerization.