Supported catalyst for ethylene (co)polymerization, preparation and use of the same
AssigneesChina Petro-Chemical Corporation, Beijing Research Institute of Chemical Industry Sinopec
InventorsHekuan Luo, Ruiguo Tang, Hua Yang, Qinfang Zhao
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Abstract
The present invention relates to a highly active titanium based supported catalyst suitable for olefin (co)polymerization, preparation and use of the same. The catalyst according to the present invention is obtained by supporting a titanium based catalyst component containing a halide promoter on spherical silica. The resultant catalyst is excellent in its particle morphology and flowability, has highly catalytic activity, has excellent hydrogen response and has superior comonomer incorporation, the polymer prepared by using such a catalyst has its particle morphology further improved.
Claims10
A highly active titanium based supported catalyst suitable 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;
- said halide promoter is a class of compounds represented by general formula F—R1[R2bX(3-b)], wherein F represents an oxygen-containing functional group which can be chemically bonded with the organoaluminium compound, the titanium compound or hydroxyl groups, such as an aldehyde group, an acyl group, a hydroxyl group and the like;
- R1 represents a divalent C1-C6 aliphatic or aromatic group which is attached to oxygen atom in the functional group F;
- R2 represents hydrogen, unsubstituted or halogen-substituted C1-C6 alkyl, C3-C5 cycloalkyl or C8-C10 aromatic groups, b is 0, 1 or 2, and X is F, Cl or Br;
- and
- B. an alkyl aluminium cocatalyst,
Dependencies are inferred from the claim text.