US4659685A
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Heterogeneous organometallic catalysts containing a supported titanium compound and at least one other supported organometallic compound
Assignee: Dow Chemical Co
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Filing: 1986-03-17
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Granted: 1987-04-21
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Expires: 2006-03-17
Abstract
Abstract Catalyst compositions are disclosed which are a combination of a supported titanium compound such as titanium tetraisopropoxide supported on magnesium dichloride and at least one other supported metallic catalyst such as dicyclopentadienyl zirconium dichloride supported on alumina and a cocatalyst such as aluminoxane. These catalysts are useful in the polymerization of α-olefins.
Inventors
- 👤 William M. Coleman, III
- 👤 Gregory F. Schmidt
- 👤 Richard E. Campbell, Jr.
- 👤 Mark S. Delaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:46
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/619; C08F4/61904; C08F4/61912; C08F4/61916; C08F4/6192; C08F4/61922; C08F4/61925; Y; Y10; Y10S; Y10S526/00; Y10S526/941; Y10S526/943
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
197 words
A catalyst composition which comprises ( 1) at least one titanium compound represented by the formula TiR' x X' 4-x wherein each R' is independently a hydrocarbyl or hydrocarbyloxy group having from about 1 to about 20 carbon atoms; X' is a halogen and x has a value from 1 to 4 supported on an inert inorganic support material and (2) at least one organometallic compound represented by the following formula ##STR3## wherein M is selected from the group consisting of Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Ce, Pr, Nd, Th, Pa or U; each R is independently hydrogen or a hydrocarbyl group having from 1 to about 10 carbon atoms; each X is independently hydrogen, a hydrocarbyl or a hydrocarbyloxy group having from 1 to about 20 carbon atoms, or a halogen, and wherein two of such R groups can be joined so as to form a multiring compound; x has a value from 1 to the valence of M minus one and y has a value equal to the valence of M; and wherein component (2) is either non-supported or is supported on an inert inorganic support material.
Claim 2
Dependent Claim
197 words
A catalyst composition which comprises ( 1) at least one titanium compound represented by the formula TiR' x X' 4-x wherein each R' is independently a hydrocarbyl or hydrocarbyloxy group having from about 1 to about 20 carbon atoms; X' is a halogen and x has a value from 1 to 4 supported on an inert inorganic support material and (2) at least one organometallic compound represented by the following formula ##STR3## wherein M is selected from the group consisting of Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Ce, Pr, Nd, Th, Pa or U; each R is independently hydrogen or a hydrocarbyl group having from 1 to about 10 carbon atoms; each X is independently hydrogen, a hydrocarbyl or a hydrocarbyloxy group having from 1 to about 20 carbon atoms, or a halogen, and wherein two of such R groups can be joined so as to form a multiring compound; x has a value from 1 to the valence of M minus one and y has a value equal to the valence of M; and wherein component (2) is either non-supported or is supported on an inert inorganic support material.
Claim 3
Dependent Claim
76 words
A catalyst of claim 1 wherein (i) in component (1), each R' is independently a hydrocarbyl or hydrocarbyloxy group having from 1 to about 5 carbon atoms; and each X' is chlorine or bromine; and (ii) in component (2), each R is independently hydrogen or a hydrocarbyl group having from 1 to about 5 carbon atoms and each X is independently hydrogen, chlorine, bromine or a hydrocarbyl group having from 1 to about 10 carbon atoms.
Claim 4
Dependent Claim
57 words
A catalyst of claim 2 wherein in component (2), M is Zr or U; each R is independently hydrogen or a hydrocarbyl group having from 1 to about 2 carbon atoms; each X is independently hydrogen, chlorine, bromine or a hydrocarbyl group having from 1 to about 5 carbon atoms and x has a value of 2.
Claim 5
Dependent Claim
47 words
A catalyst of claim 3 wherein (i) said titanium compound is tetraisopropoxy titanium, titanium tetrachloride, (1,1'-bi-2-naphtholate)titanium dichloride or a combination thereof; and (ii) the organometallic compound is bis(cyclopentadienyl)uranium dimethyl, bis(cyclopentadienyl)uranium dichloride, bis(pentamethylcyclopentadienyl)uranium dimethyl, bis(pentamethylcyclopentadienyl)uranium dichloride, bis(cyclopentadienyl)zirconium dimethyl, bis(cyclopentadienyl)zirconium dichloride, bis(pentamethylcyclopentadienyl)zirconium dimethyl, bis(pentamethylcyclopentadienyl)zirconium dichloride or a combination thereof.
Claim 6
Dependent Claim
31 words
A catalyst of claim 1 wherein the titanium compound is supported on magnesium dichloride and the organometallic compound is supported on alumina, silica, silica.alumina cogels, silica.magnesium oxide cogels or magnesium chloride.
Claim 7
Dependent Claim
31 words
A catalyst of claim 2 wherein the titanium compound is supported on magnesium dichloride and the organometallic compound is supported on alumina, silica, silica.alumina cogels, silica.magnesium oxide cogels or magnesium chloride.
Claim 8
Dependent Claim
31 words
A catalyst of claim 3 wherein the titanium compound is supported on magnesium dichloride and the organometallic compound is supported on alumina, silica, silica.alumina cogels, silica.magnesium oxide cogels or magnesium chloride.
Claim 9
Dependent Claim
31 words
A catalyst of claim 4 wherein the titanium compound is supported on magnesium dichloride and the organometallic compound is supported on alumina, silica, silica.alumina cogels, silica.magnesium oxide cogels or magnesium chloride.
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| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
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