Patent EP0174104A1 successfully refreshed from Google Patents.
EP0174104A1
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Polymerization catalyst, production and use
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1985-08-06
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Granted: —
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Expires: 2005-08-06
Abstract
Abstract Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, an oxygen containing compound, an acyl halide and titanium tetrachloride and a Group IIIa hydrocarbyl metal dihalide and prepolymerizing the solid with a minor amount of ethylene.
Inventors
- 👤 Steven Arthur Best
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 06:45
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/904; Y10S526/943
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
160 words
A transition metal containing solid prepolymerized catalyst component comprising the prepolymerized solid reaction product obtained by treating an inert solid support material in an inert solvent sequentially with (A) an organometallic compound of a Group IIa, IIb or IIIa metal wherein all the metal valencies are satisfied with a hydrocarbon or substituted hydrocarbon group, (B) an oxygen containing compound selected from ketones, aldehydes, alcohols or mixtures thereof, (C) an acyl halide, (D) at least one transition metal compound of a Group IVb, Vb, VIb or VIII metal , (E) a Group IIIa metal hydrocarbyl dihalide and prepolymerizing the solid with a minor amount of ethylene with the proviso that the inert solid support material can alternatively be treated with (i) the (A) organometallic compound and the (B) oxygen containing compound simultaneously, (ii) the reaction product of the (A) organometallic compound and (B) oxygen containing compound or (iii) the (B) oxygen containing compound followed by treating with the (A) organometallic compound.
Claim 2
Dependent Claim
160 words
A transition metal containing solid prepolymerized catalyst component comprising the prepolymerized solid reaction product obtained by treating an inert solid support material in an inert solvent sequentially with (A) an organometallic compound of a Group IIa, IIb or IIIa metal wherein all the metal valencies are satisfied with a hydrocarbon or substituted hydrocarbon group, (B) an oxygen containing compound selected from ketones, aldehydes, alcohols or mixtures thereof, (C) an acyl halide, (D) at least one transition metal compound of a Group IVb, Vb, VIb or VIII metal , (E) a Group IIIa metal hydrocarbyl dihalide and prepolymerizing the solid with a minor amount of ethylene with the proviso that the inert solid support material can alternatively be treated with (i) the (A) organometallic compound and the (B) oxygen containing compound simultaneously, (ii) the reaction product of the (A) organometallic compound and (B) oxygen containing compound or (iii) the (B) oxygen containing compound followed by treating with the (A) organometallic compound.
Claim 3
Dependent Claim
169 words
The transition metal containing catalyst component of claim 1 wherein the (A) organometallic compound is a dihydrocarbon magnesium compound represented by R l MgR 2 wherein R 1 and R 2 which can be the same or different are selected from alkyl groups, aryl groups, cycloalkyl groups, aralkyl groups, alkadienyl groups or alkenyl groups, the (B) oxygen containing compounds are selected from alcohols and ketones represented by the formula R 3 0 H and R 4 COR 5 wherein R 3 and each of R 4 and R 5 which may be the same or different can be an alkyl group, aryl group, cycloalkyl group, aralkyl group, alkadienyl group or alkenyl group and the (C) acyl halide is represented by the formula R 8 COX wherein R 8 can be an alkyl group, cycloalkyl group or aryl group having from 1 to 12 carbon atoms and X is halogen and the (E) group IIIa metal hydrocarbyl dihalide is one of alkyl boron dihalide, alkyl aluminum dihalide or mixtures thereof.
Claim 4
Dependent Claim
16 words
The transition metal containing catalyst component of claim 2,wherein the inert solid support material is silica.
Claim 5
Dependent Claim
22 words
The transition metal containing catalyst component of claim 2 or claim 3, wherein R 1 is butyl and R 2 is ethyl.
Claim 6
Dependent Claim
28 words
The transition metal containing catalyst component of claims 2 to 4, wherein the Group IIIa alkyl metal dihalide is one of ethyl boron dichloride or ethyl aluminum dichloride.
Claim 7
Dependent Claim
20 words
The transition metal containing catalyst component of any of claims 2 to 5, wherein R 8 is methyl or phenyl.
Claim 8
Dependent Claim
33 words
The transition metal containing catalyst componet of any of claims 2 to 6, wherein the organomagnesium compound and the oxygen containing compound are reacted together prior to contact with the inert support material.
Claim 9
Dependent Claim
46 words
The transition metal containing catalyst component of claim 2, wherein the magnesium containing compound is ethyl-n-butylmaguesium the acyl halide is benzoyl chloride, the Group IIIa metal hydrocarbyl dihalide is ethylaluminum dihalide and the transition metal compound is TiCl, and optionally the oxygen containing component is n-butanol.
Claim 10
Dependent Claim
76 words
A catalyst system for the polymerization or copolymerization of ethylene and alpha-olefins having from 3 to 12 carbon atoms comprising (a) an organo aluminum compound of the formula AlR" n X" 3-n wherein R" is hydrogen, hydrocarbon or substitute hydrocarbon having from 1 to 20 carbon atoms, X is halogen and n is a number from 1 to 3, and (b) the transition metal containing solid prepolymerized catalyst component of any of claims 1 to 8.
Claim 11
Dependent Claim
39 words
A process for the polymerization of ethylene and alpha-olefins having from 3 to 20 carbon atoms or mixtures of ethylene, alpha-olefins and diolefins which process comprises polymerizing in the presence of a catalyst system in accordance with claim 9,
References Cited (Backward Citations)
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