Patent ID: 6538078
Filing Date: 2003-03-25
Classification: C08F,Y10S

Abstract:
A highly active titanium based supported catalyst for ethylene (co)polymerization, comprising:A) a supported catalyst component which is a titanium-containing active component supported on an inert carrier material, comprising at least one titanium compound, at least one magnesium compound, at least one halide promoter, at least one electron donor compound and at least one porous inert carrier material containing hydroxyl groups on its surface; said halide promoter has general formula Fâ€”R1[R2bX(3-b)], wherein F represents an oxygen-containing functional group which is chemically bonded with alkyl aluminum cocatalyst of component B), the titanium compound or the hydroxyl groups of the carrier material; R1 represents a divalent C1-C6 aliphatic or aromatic group which is attached to the functional group F; R2 represents hydrogen, unsubstituted or halogen-substituted C1-C6 alkyl, C3-C6 cycloalkyl or C6-C10 aromatic groups, b is 0, 1 or 2, and X is fluorine, bromine or chorine; said magnesium compound being at least one selected from the group consisting of magnesium dichloride, magnesium dibromide, and magnesium diiodide; and B) the alkyl aluminum cocatalyst.