Patent US4929701A successfully refreshed from Google Patents.
US4929701A
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Hydrogenation of CO/olefin copolymer
Assignee: Premark FEG LLC
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Filing: 1989-03-20
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Granted: 1990-05-29
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Expires: 2009-03-20
Abstract
Abstract Linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are hydrogenated in the presence of a catalyst formed from a ruthenium carbonyl and an organic iodide to produce novel alternating polymers wherein one monomeric unit is a two-carbon unit optionally substituted with a methyl group and the other monomeric unit is a 2,5-tetrahydrofurandiyl unit optionally substituted on one of the carbon atoms in the 3 or 4 positions with a methyl group.
Inventors
- 👤 Johannes A. M. Van Broekhoven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:35
CPC Classifications
C; C08; C08G; C08G67/00; C08G67/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
A process for producing a linear alternating polymer product wherein two-carbon monomeric units, optionally containing a methyl substituent, alternate with 2,5-tetrahydrofurandiyl units optionally containing a methyl substituent on one of the carbon atoms in the 3 or 4 positions which comprises hydrogenating under hydrogenation conditions a linear reactant linear alternating polymer of carbon monoxide and at least one α-olefin, in an inert reaction diluent, in the presence of a catalyst formed from a ruthenium carbonyl and an organic iodide.
Claim 2
Dependent Claim
79 words
A process for producing a linear alternating polymer product wherein two-carbon monomeric units, optionally containing a methyl substituent, alternate with 2,5-tetrahydrofurandiyl units optionally containing a methyl substituent on one of the carbon atoms in the 3 or 4 positions which comprises hydrogenating under hydrogenation conditions a linear reactant linear alternating polymer of carbon monoxide and at least one α-olefin, in an inert reaction diluent, in the presence of a catalyst formed from a ruthenium carbonyl and an organic iodide.
Claim 3
Dependent Claim
43 words
The process of claim 1 wherein the reactant polymer is of the repeating formula --CO(CH.sub.2 --CH.sub.2) ].sub.x [ CO--(G) ].sub.y wherein G is a moiety of propylene polymerized through the ethylenic unsaturation and the ratio of y:x is no more than about 0.5.
Claim 4
Dependent Claim
22 words
The process of claim 2 wherein the ruthenium carbonyl is formed in situ from an added soluble ruthenium salt and carbon monoxide.
Claim 5
Dependent Claim
12 words
The process of claim 3 wherein the organic iodide is methyl iodide.
Claim 6
Dependent Claim
17 words
The process of claim 4 wherein the ratio of y:x is from about 0.01 to about 0.1.
Claim 7
Dependent Claim
15 words
The process of claim 7 wherein the added soluble ruthenium compound is ruthenium (III) acetylacetonate.
Claim 8
Dependent Claim
48 words
The process of producing a linear alternating polymer of --CH 2 --CH 2 units and ##STR2## units by hydrogenating a linear alternating copolymer of carbon monoxide and hydrogen, in an inert reaction diluent, in the presence of a catalyst formed from a ruthenium carbonyl and an organic iodide.
Claim 9
Dependent Claim
48 words
The process of producing a linear alternating polymer of --CH 2 --CH 2 units and ##STR2## units by hydrogenating a linear alternating copolymer of carbon monoxide and hydrogen, in an inert reaction diluent, in the presence of a catalyst formed from a ruthenium carbonyl and an organic iodide.
Claim 10
Dependent Claim
22 words
The process of claim 7 wherein the ruthenium carbonyl is formed in situ from an added soluble ruthenium compound and carbon monoxide.
Claim 11
Dependent Claim
13 words
The process of claim 8 wherein the organic iodide is an alkyl iodide.
Claim 12
Dependent Claim
13 words
The process of claim 9 wherein the ruthenium compound is ruthenium (III) acetylacetonate.
Claim 13
Dependent Claim
12 words
The process of claim 10 wherein the alkyl iodide is methyl iodide.
References Cited (Backward Citations)
US2808392A
Cited
US3694412A
Cited
US3979373A
Cited
US4385159A
Cited
EP0121965A2
Cited
EP0181014A1
Cited
EP0222454B1
Cited
EP0257663B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |