Supported donor modified ziegler-natta catalysts

摘要

Procatalyst comprising an inorganic support, a chlorine compound carried on said support, a magnesium compound carried on said support, a titanium compound carried on said support, and a compound comprising two oxygen containing rings, wherein said two rings are linked via a bridge selected from the group consisting of carbon bridge, silicon bridge, ethane-1.2-diyl bridge, ethene-1,2-diyl bridge, alkylaminomethyl bridge and imine bridge.

主权项

1. A process for producing a procatalyst, wherein the process comprises the steps in the order of:
(a) contacting an inorganic support (IS) with an an alkyl metal chloride (AMC) to obtain a first reaction product (1st RP), (b) contacting said first reaction product (1st RP) with an electron donor compound (ED) to obtain a second reaction product (2nd RP),
(c1) contacting said second reaction product (2nd RP) with a compound (M) or mixture (MI) to obtain a third reaction product (3rd RPa) and subsequently contacting said third reaction product (3rd RPa) with a titanium compound (TC) to obtain the procatalyst, or(c2) contacting said second reaction product (2nd RP) with a titanium compound (TC) to obtain a third reaction product (3rd RPb) and subsequently contacting said third reaction product (3rd RPb) with a compound (M) or mixture (MI) to obtain the procatalyst, or(c3) contacting said second reaction product (2nd RP) simultaneously with a compound (M) and a titanium compound (TC) or with a mixture (MI) and a titanium compound (TC) to obtain the procatalyst, or(c4) contacting said second reaction product (2nd RP) with a mixture of compound (M) and a titanium compound (TC) or with a mixture of a mixture (MI) and a titanium compound (TC) to obtain the procatalyst, wherein: (i) the alkyl metal chloride (AMC) is of formula (I):
RnMeCl3-n  (I) wherein: R is a C1-C20 alkyl group, Me is a metal of group 13 of the Periodic Table, and n is 1 or 2, (ii) the compound (M) and the mixture (MI) comprise a hydrocarbyl and/or hydrocarbyl oxide linked to magnesium, (iii) the titanium compound (TC) is of formula (III):
(OR′)4-xTiClx  (III) wherein: R′ is a C2-C20 hydrocarbyl group and x is an integer of 3 or 4, and (iv) the electron donor compound (ED) is a compound (C) comprising two oxygen-containing rings, wherein said two rings are linked via a bridge selected from the group conisting of carbon bridge, silicon bridge, ethane-1,2-diyl bridge, ethene-1,2-diyl bridge, alkylaminomethyl bridge and imine bridge.