CATALYST COMPONENT FOR OLEFIN POLYMERIZATION AND APPLICATION THEREOF

摘要

Provided is a solid catalyst component for olefin polymerization, which comprises Mg, Ti, a halogen and an electron donor. The electron donor is selected from at least one of ring-substituted ether-acid ester compounds of the general formula (I). Also provided are a catalyst containing the solid catalyst component and the application of the catalyst in reactions of olefin polymerization, particularly in the reaction of propylene polymerization. The compound with a specific ring-substituted structure contained in the solid catalyst component of the present invention has a steric hindrance effect and a spatial configuration capable of fixing ether and acid ester functional groups, which has a positive influence on the participation thereof in the formation of an active centre of the catalyst and the improvement of the steric specificity of the catalyst. The solid catalyst component of the invention has a good activity. The polymers made therefrom have a high isotacticity.

主权项

1. A solid catalyst component for olefin polymerization, comprising: Mg, Ti, a halogen and an electron donor, the electron donor being selected from at least one of ring-substituted ether-acid ester compounds of the general formula (I): wherein, A, B, C, D, and E are each carbon atoms, or are selected from N, O and S heteroatoms; W, X, Y, Z, and m are each 0, 1 or 2; with the proviso that when n is equal to 0: IX) B is a nitrogen atom, A, C and D are each carbon atoms, X is 1, W, Y and Z are each 2; or X) C is a nitrogen atom, A, B and D are each carbon atoms, Y is 1, W, X and Z are each 2; or XI) C is an oxygen atom, A, B, and D are each carbon atoms, Y is 0, W, X and Z are each 2; or XII) A and C are each oxygen atoms, W and Y are each 0, X and Z are each 2; or XIII) B is an oxygen atom, A, C and D are each carbon atoms, X is 0, W, Y and Z are each 2; or XIV) A, B, C and D are each carbon atoms and bonded to each other through a single bond, W, X, Y and Z are each 2; or XV) A, B, C and D are each carbon atoms, B and C are bonded through a double bond, X and Y are each 1, W and Z are each 2; or XVI) A, B, C and D are each carbon atoms, A and D, B and C, respectively, are bonded through a double bond, W, X, Y and Z are each 1; when n is equal to 1: x) D is a nitrogen atom, A, B, C, and E are each carbon atoms, Z is 1, W, X, Y, and m are each 2; or xi) E is a nitrogen atom, A, B, C and D are each carbon atoms, m is 1, W, X, Y and Z are each 2; or xii) E is an oxygen atom, A, B, C and D are each carbon atoms, m is 0, W, X, Y and Z are each 2; or xiii) C and D are each oxygen atoms, A, B and E are each carbon atoms, Y and Z are each 0, W, X, and m are each 2; or xiv) D is an oxygen atom, A, B, C, and E are each carbon atoms, Z is 0, W, X, Y, and m are each 2; or xv) B is an oxygen atom, A, C, D, and E are each carbon atoms, X is 0, W, Y, Z, and m are each 2; xvi) A, B, C, D, and E are each carbon atoms, W, X, Y, Z, and m are each 2; xvii) A, B, C, D, and E are each carbon atoms, B and C are bonded through a double bond, X and Y are each 1, W, Z, and m are each 2; or xviii) A, B, C, D, and E are each carbon atoms, A and D, B and C, respectively, are bonded through a double bond, W, X, Y and Z are each 1, m is 2; when n is equal to 2: A and B are each carbon atoms, W and X are each 2, C and D are each carbon atom, sulfur atom, oxygen atom or nitrogen atom, Y and Z are each 2 or 0, E represents two carbon atoms bonded through a single bond or a double bond, when the two carbon atoms of E are bonded through a double bond, m is equal to 1, and when the two carbon atoms of E are bonded through a single bond, m is equal to 2; R1 and R4 are same or different C1-C20 hydrocarbon group; R2, R3, R5-R9 are same or different, and are selected from a hydrogen atom, a halogen atom, an oxygen atom, a sulfur atom and C1-C20 hydrocarbon group; said R1-R9 optionally contain one or more R atoms as a substituent of a carbon atom, a hydrogen atom, or both, where R is a heteroatom, linear or branched C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20-aryl, C7-C20 alkaryl and C7-C20 aralkyl group; wherein any two groups of R1-R9 may be bonded to each other to form one or more spiro ring or fused ring structures.