Patent US4567243A successfully refreshed from Google Patents.
US4567243A
Expired / Lapsed
US
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Polymerization method
Assignee: Enron Chemical Co
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Filing: 1984-10-29
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Granted: 1986-01-28
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Expires: 2004-10-29
Abstract
Abstract A catalyst and method in which the catalyst is active with a cocatalyst in the polymerization and copolymerization of 1-olefins and is prepared by reacting together one or more of a specific class of organic silicon compounds, a porous support or a silicon compound treated porous support, a Group IIA organometallic compound, and a Group IVB, VB transition metal compound or mixture thereof.
Inventors
- 👤 Thomas J. Pullukat
- 👤 Yu-Tang Hwang
- 👤 Robert A. Dombro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:03
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/916
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
223 words
The method of making polymers from polymerizable 1-olefins which comprises polymerizing at least one of said olefins under polymerizing conditions with a catalyst system comprising an alkyl or aryl aluminum compound cocatalyst and a catalyst prepared by reacting: (A) a support comprising (1) silica, alumina, silica-alumina or mixtures of these having unreacted surface hydroxyl groups and dried or calcined at a temperature of about 200° C. to 1000° C., or (2) silica, alumina, silica-alumina or mixtures of these having surface hydroxyl groups completely reacted with an excess of an organosilane which is reactive with said groups followed by removal of any excess of said organosilane and reaction by-products, with (B) an excess relative to said unreacted or reacted hydroxyl groups of (A)(1) or (A)(2), respectively, of an organosilicon compound which is reactive with said hydroxyl groups of the formula (R 3 Si) 2 NH, where R is a hydrocarbyl group selected from C 1 -C 20 alkyls, aryls, alkaryls or aralkyls or mixtures of these in an amount equal to 0.2 to 2.0 molar equivalents to the organomagnesium compound or complex of (C); and (C) an organomagnesium compound or a complex of said organomagnesium compound with a Group IIIA organometallic compound; followed by (D) a halide or alkoxy halide of a transition metal selected from the group consisting of titanium, vanadium and zirconium.
Claim 2
Independent Claim
223 words
The method of making polymers from polymerizable 1-olefins which comprises polymerizing at least one of said olefins under polymerizing conditions with a catalyst system comprising an alkyl or aryl aluminum compound cocatalyst and a catalyst prepared by reacting: (A) a support comprising (1) silica, alumina, silica-alumina or mixtures of these having unreacted surface hydroxyl groups and dried or calcined at a temperature of about 200° C. to 1000° C., or (2) silica, alumina, silica-alumina or mixtures of these having surface hydroxyl groups completely reacted with an excess of an organosilane which is reactive with said groups followed by removal of any excess of said organosilane and reaction by-products, with (B) an excess relative to said unreacted or reacted hydroxyl groups of (A)(1) or (A)(2), respectively, of an organosilicon compound which is reactive with said hydroxyl groups of the formula (R 3 Si) 2 NH, where R is a hydrocarbyl group selected from C 1 -C 20 alkyls, aryls, alkaryls or aralkyls or mixtures of these in an amount equal to 0.2 to 2.0 molar equivalents to the organomagnesium compound or complex of (C); and (C) an organomagnesium compound or a complex of said organomagnesium compound with a Group IIIA organometallic compound; followed by (D) a halide or alkoxy halide of a transition metal selected from the group consisting of titanium, vanadium and zirconium.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein an inert liquid medium is present during said reaction.
Claim 4
Dependent Claim
13 words
The method of claim 2 wherein said inert liquid comprises a liquid alkane.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein said transition metal of 1 (D) comprises titanium.
Claim 6
Dependent Claim
33 words
The method of claim 1 wherein the amount of said transition metal compound of 39 (D) is from 5-200 wt. % of the equivalent amount of said surface hydroxyl groups of 1 (A).
Claim 7
Dependent Claim
33 words
The method of claim 1 wherein the ratio of the amount of metal in said cocatalyst to the amount of said transition metal of 1 (D) is up to about 500 to 1.
Claim 8
Dependent Claim
53 words
The method of claim 1 wherein said organosilane compound of 1 (A)(2) comprises one or more of said following compounds: (R.sub.3 Si).sub.2 NH R.sub.n Six.sub.4-n where n is 1, 2 or 3, X is a group chemically reactive with the hydroxyl groups of the silica or alumina, and R is hydrogen and/or hydrocarbyl.
Claim 9
Dependent Claim
26 words
The method of claim 1 wherein said magnesium compound is of the formula MgR 2 .nAlR 3 wherein R is a hydrocarbyl group and n=about 0-2.
Claim 10
Dependent Claim
26 words
The method of claim 1 wherein said magnesium compound of 1 (C) has a molar ratio to the hydroxyl groups of 1 (A) of about 0.1-5.
Claim 11
Dependent Claim
53 words
The method of claim 4 wherein said titanium compound is one or more of the formulas: TiX.sub.4 TiX.sub.m (OR').sub.(4-m) in which m is 1, 2, or 3, R' is selected from alkyl, aryl, cycloalkyl, alkyl, alkaryl, cyclopentadienyl and alkenyl, each of these groups having 1 to 12 carbon atoms, and X is halogen.
Claim 12
Dependent Claim
36 words
The method of claim 1 wherein the support of (A) is reacted with the compound of (B), the resulting product is reacted with the compound or complex of (C), and the product thereof reacted with (D).
Claim 13
Dependent Claim
40 words
The method of claim 1 wherein a compound of (B) is added to a support of (A)(2) before or after mixing with a compound or complex of (C) and the resulting product reacted with a compound or mixture of (D).
Claim 14
Dependent Claim
31 words
The method of claim 1 wherein said organosilicon compound of (B) is added in an amount equal to 0.5 to 1.5 molar equivalents to the organomagnesium compound or complex of (C).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |