US4130699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor phase polymerization with temporarily inactive titanium catalyst
Assignee: BP Corp North America Inc
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Filing: 1977-11-25
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Granted: 1978-12-19
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Expires: 1997-11-25
Abstract
Abstract Vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising recycled quench liquid, reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form a resinous polymer of an olefin having a low level of catalyst residues.
Inventors
- 👤 Glen R. Hoff
- 👤 John L. Melquist
- 👤 Peter Fotis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:13
CPC Classifications
C; C08; C08F; C08F10/00; B; B01; B01J; B01J19/00; B01J19/18; B01J19/1868; B01J19/1881; B01J8/00; B01J8/08; B01J8/10; B01J8/18; B01J8/24; B01J8/36; B01J8/38; B01J8/382; B01J2219/00; B01J2219/18; B01J2219/182; C08F2410/00; C08F2410/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S526/00; Y10S526/901
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
83 words
The method of producing a resinous polymer of olefin by vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising recycled quench liquid, reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form a resinous polymer of an olefin having a low level of catalyst residues.
Claim 2
Independent Claim
83 words
The method of producing a resinous polymer of olefin by vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising recycled quench liquid, reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form a resinous polymer of an olefin having a low level of catalyst residues.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein said high yield titanium catalyst component comprises a magnesium supported catalyst and said recycled quench liquid comprises an alkane.
Claim 4
Dependent Claim
10 words
The process of claim 2 wherein said olefin comprises ethylene.
Claim 5
Dependent Claim
15 words
The process of claim 3 wherein said metal alkyl reducing agent comprises a trialkyl aluminum.
Claim 6
Dependent Claim
28 words
The process of claim 4 wherein said high yield titanium catalyst component conveyed to the polymerization reactor has been deactivated to a temporary inactive state with an alcohol.
Claim 7
Dependent Claim
10 words
The process of claim 5 wherein said alcohol comprises ethanol.
Claim 8
Dependent Claim
10 words
The process of claim 5 wherein said alcohol comprises methanol.
Claim 9
Dependent Claim
28 words
The process of claim 4 wherein said high yield titanium catalyst component conveyed to the polymerization reactor has been deactivated to a temporary inactive state with hydrogen chloride.
Claim 10
Dependent Claim
27 words
The process of claim 4 wherein said high yield titanium catalyst component conveyed to the polymerization reactor has been deactivated to a temporary inactive state with oxygen.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein said olefin comprises propylene.
Claim 12
Independent Claim
97 words
The method of producing a resinous polymer of an olefin by vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising from 25 to 95 parts by weight recycled quench liquid, and from 75 to 5 parts by weight virgin quench liquid reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form polyolefin having a low level of catalyst residues.
Claim 13
Independent Claim
97 words
The method of producing a resinous polymer of an olefin by vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising from 25 to 95 parts by weight recycled quench liquid, and from 75 to 5 parts by weight virgin quench liquid reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form polyolefin having a low level of catalyst residues.
Claim 14
Dependent Claim
45 words
The process of claim 11 wherein said high yield titanium catalyst is a magnesium supported catalyst capable in the active form of yielding at least 10,000 grams of polyolefin per gram of titanium catalyst component when used in conjunction with a metal alkyl reducing agent.
Claim 15
Dependent Claim
13 words
The process of claim 12, wherein said recycled quench liquid comprises an alkane.
Claim 16
Dependent Claim
43 words
The process of claim 13 wherein said olefin comprises ethylene and the liquid conveying the inactive titanium catalyst component to the reactor comprises from 50 to 90 parts by weight recycled quench liquid and 50 to 10 parts by weight virgin quench liquid.
Claim 17
Dependent Claim
48 words
The process of claim 14 wherein said high yield titanium catalyst component conveyed to the polymerization reactor has been deactivated by from 50 to 150 mol percent of a deactivating agent, based on the alkyl groups and/or hydride groups bonded to metal present in the titanium catalyst component.
Claim 18
Dependent Claim
23 words
The process of claim 15 wherein said high yield titanium catalyst component has been deactivated to a temporary inactive state with an alcohol.
Claim 19
Dependent Claim
10 words
The process of claim 16 wherein said alcohol comprises ethanol.
Claim 20
Dependent Claim
10 words
The process of claim 16 wherein said alcohol comprises methanol.
Claim 21
Dependent Claim
22 words
The process of claim 15 wherein said high yield titanium catalyst component has been deactivated to a temporary inactive state with HCl.
Claim 22
Dependent Claim
22 words
The process of claim 15 wherein said high yield titanium catalyst component has been deactivated to a temporary inactive state with oxygen.
Claim 23
Dependent Claim
12 words
The process of claim 13 wherein said olefin comprises ethylene and butene-1.
Claim 24
Dependent Claim
10 words
The process of claim 11 wherein said olefin comprises propylene.
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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) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |