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US4698323A
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Transition metal catalyst component containing magnesium alkoxy alkoxides
Assignee: Akzo Nobel Inc
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Filing: 1986-09-29
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Granted: 1987-10-06
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Expires: 2006-09-29
Abstract
Abstract The transition metal component of a Ziegler-Natta type catalyst is prepared by the reaction of a magnesium alkoxy alkoxide with titanium tetrachloride. The transition metal component is combined with an aluminum compound to prepare a catalyst for the polymerization of olefins.
Inventors
- 👤 Elliot I. Band
- 👤 William E. Summers, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:40
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A process for forming a transition metal polymerization catalyst component comprising reacting (i) a soluble magnesium alkoxy alkoxide, solubilized in organic solvent, represented by the formula: (Z--(CH.sub.2).sub.n --O)--Mg--(O--(CH.sub.2).sub.m --OR.sub.2) wherein n and m are the same or different positive integers from 1 to 12; Z is (R 1 O)-- or (R 1 )--, and R 1 and R 2 are the same or different hydrocarbon radicals containing 1 to 20 carbon atoms; with (ii) titanium tetrachloride, wherein the mole ratio of (i) to (ii) is from 1:5 to 1:1000.
Claim 2
Dependent Claim
89 words
A process for forming a transition metal polymerization catalyst component comprising reacting (i) a soluble magnesium alkoxy alkoxide, solubilized in organic solvent, represented by the formula: (Z--(CH.sub.2).sub.n --O)--Mg--(O--(CH.sub.2).sub.m --OR.sub.2) wherein n and m are the same or different positive integers from 1 to 12; Z is (R 1 O)-- or (R 1 )--, and R 1 and R 2 are the same or different hydrocarbon radicals containing 1 to 20 carbon atoms; with (ii) titanium tetrachloride, wherein the mole ratio of (i) to (ii) is from 1:5 to 1:1000.
Claim 3
Dependent Claim
33 words
The process of claim 1 wherein R 1 and R 2 are alkyl groups of 1 to 12 carbon atoms and n and m are each numbers less than or equal to 4.
Claim 4
Dependent Claim
31 words
The process of claim 1 wherein the magnesium alkoxy alkoxide is selected from the group consisting of: magnesium bis(2-methoxyethylate) magnesium bis(2-ethoxyethylate) magnesium bis(2-butoxyethylate) magnesium bis(3-methoxypropylate) magnesium bis(3-ethoxypropylate) magnesium bis(3-propoxypropylate) magnesium bis(3-methoxybutylate)
References Cited (Backward Citations)
US31099A
Cited
US3644318A
Cited
US4144390A
Cited
USRE31099E
Cited
US4220554A
Cited
US4126627A
Cited
US4277372A
Cited
US4330432A
Cited
US4448944A
Cited
US4447587A
Cited
US4485186A
Cited
GB2111066A
Cited
US4460701A
Cited
US4497905A
Cited
US4565798A
Cited
US4562173A
Cited
US4634786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |