3 4 THREE AND FOUR 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 substituted hydrocarbons containing carbon atoms are marvelous, provided that the ₁ R 1 -OC (O) -O- group and a 2 R ₁ -OC (O) 3 to 4 atoms in the shortest chain linking -O- groups Insoluble / RTI catalytic component of a solid useful for olefin polymerization, further containing an internal electron donor having an RTI ID = 0.0