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US 4,287,091 AGranted
Polymerization catalysts
AssigneePhillips Petroleum Company
InventorCharles M. Selman
Life of this patent
Estimating the term…
Abstract
Polymerization, catalysts, and preparation thereof comprising milling magnesium metal, an organic halide, and titanium tetrahalide or the milled product in the presence of at least one of magnesium oxide, a triaryl phosphite, a polymeric material, titanium tetrahalide, vanadium tetrahalide, silicon tetrahalide, and an aluminum trihalide. The milled catalyst component can be heat treated prior to activation. The milled titanium catalyst component is activated with an organoaluminum activator producing a catalyst for olefin polymerization.
Claims29
A process comprising:
- (a) contacting
- (1) magnesium metal,
- (2) an organic halide of the formula RX or R'X.sub.2 where X represents a halogen, R is selected from alkynyl, alkenyl, alkyl, aryl, cycloalkenyl or cycloalkyl radicals and combinations thereof containing from 1 to 12 carbon atoms per molecule and R' is a saturated divalent aliphatic hydrocarbyl radical,
- (3) titanium tetrahalide, and subjecting same to intensive milling in the absence of a complexing diluent;
- (b) milling the entire reaction product of (a) with
- (4) at least one of tin tetrahalide, vanadium tetrahalide and silicon tetrahalide,
- (5) in the presence or absence of a triaryl phosphite, and
- (c) thereafter activating the thus produced catalyst component of (b) by contacting same with
- (6) an organoaluminum activator.
6 more elements
A process comprising:
- (a) combining magnesium metal, an organic halide of the formula RX or R'X.sub.2 where X represents a halogen, R is selected from alkynyl, alkenyl, alkyl, aryl, cycloalkenyl or cycloalkyl radicals and combinations thereof containing from 1 to 12 carbon atoms per molecule and R' is a saturated divalent aliphatic hydrocarbyl radical and titanium tetrahalide with at least one of tin tetrachloride, vanadium tetrachloride, and silicon tetrachloride, and, optionally, at least one of magnesium oxide, a triaryl phosphite, and a polymeric material selected from polypropylene, poly(phenylene sulfide) and poly(phenylene oxide), and subjecting same to intensive milling in the absence of any extraneous diluent to form a titanium catalyst component;
- and
- (b) thereafter contacting said titanium catalyst component with an organoaluminum activator.
A process comprising:
- (a) combining an organic halide of the formula RX or R'X.sub.2 where X represents a halogen, R is selected from alkynyl, alkenyl, alkyl, aryl, cycloalkenyl or cycloalkyl radicals and combinations thereof containing from 1 to 12 carbon atoms per molecule and R' is a saturated divalent aliphatic hydrocarbyl radical, a titanium tetrahalide and magnesium metal and subjecting same to intensive milling in the presence of at least one of tin tetrachloride, vanadium tetrachloride, silicon tetrachloride, aluminum trichloride, magnesium oxide, and a polymer material selected from polypropylene, poly(phenylene sulfide) and poly(phenylene oxide);
- (b) milling the entire reaction product of (a) with additional amounts of at least one of tin tetrachloride, vanadium tetrachloride, silicon tetrachloride, aluminum trichloride, magnesium oxide, and a polymeric material selected from polypropylene, poly(phenylene sulfide) and poly(phenylene oxide) and in the presence of a triaryl phosphite to produce a titanium catalyst component;
- and
- (c) thereafter contacting said titanium catalyst component with an organoaluminum activator.
1 more element
Dependencies are inferred from the claim text.