US4387055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper oxalate complexes
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1981-07-13
•
Granted: 1983-06-07
•
Expires: 2001-07-13
Abstract
Abstract A cuprous oxalate complex of the formula Cu 2 (CO) n L m C 2 O 4 wherein L is an unsaturated hydrocarbon containing at least one non-aromatic unsaturation and n and m are numbers from 0 to 2.
Inventors
- 👤 Gerald Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:34
CPC Classifications
C; C07; C07F; C07F1/00; C07F1/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A composition of matter comprising a cuprous oxalate complex of the formula Cu 2 (CO) n L m C 2 O 4 where L is an unsaturated hydrocarbon containing at least one non-aromatic unsaturation capable of forming a Cu-L bond and n and m are numbers from 0 to 2, provided that n and m cannot both be 0.
Claim 2
Dependent Claim
59 words
A composition of matter comprising a cuprous oxalate complex of the formula Cu 2 (CO) n L m C 2 O 4 where L is an unsaturated hydrocarbon containing at least one non-aromatic unsaturation capable of forming a Cu-L bond and n and m are numbers from 0 to 2, provided that n and m cannot both be 0.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein n is 0 or 1 and m is from 1 to 2.
Claim 4
Dependent Claim
20 words
The composition of claim 2 wherein L is an unsaturated hydrocarbon containing at least one ethylenic, acetylenic or isonitrilic unsaturation.
Claim 5
Dependent Claim
63 words
The composition of claim 2 wherein L is C 2 -C 30 alkene, C 2 -C 30 alkyne, C 8 -C 20 arylalkene, C 8 -C 30 arylalkyne, C 4 -C 14 cycloalkene or isonitrile of the formula R--N.tbd.C where R is C 1 -C 20 alkyl, C 3 -C 12 cycloalkyl, C 7 -C 20 aralkyl or C 6 -C 10 aryl.
Claim 6
Dependent Claim
63 words
The composition of claim 2 wherein L is C 2 -C 20 alkene, C 2 -C 20 alkyne, C 8 -C 20 arylalkene, C 8 -C 20 arylalkyne, C 4 -C 10 cycloalkene or isonitrile of the formula R--N.tbd.C where R is C 1 -C 10 alkyl, C 6 -C 10 cycloalkyl, C 7 -C 14 aralkyl or C 6 -C 10 aryl.
Claim 7
Dependent Claim
9 words
The composition of claim 2 wherein n is 0.
Claim 8
Dependent Claim
14 words
A composition of matter comprising Cu 2 (CO) 2 C 2 O 4 .
Claim 9
Dependent Claim
14 words
A composition of matter comprising Cu 2 (CO) 2 C 2 O 4 .
Claim 10
Dependent Claim
47 words
A process for preparing Cu 2 C 2 O 4 and Cu 2 (CO) 2 C 2 O 4 which comprises contacting about equimolar amounts of Cu 2 O and oxalic acid with CO in an inert organic solvent at temperatures of from -100° to +100° C.
Claim 11
Dependent Claim
47 words
A process for preparing Cu 2 C 2 O 4 and Cu 2 (CO) 2 C 2 O 4 which comprises contacting about equimolar amounts of Cu 2 O and oxalic acid with CO in an inert organic solvent at temperatures of from -100° to +100° C.
Claim 12
Dependent Claim
71 words
A process for preparing Cu 2 (CO) n L m C 2 O 4 where n is 0 or 1, m is from 1 to 2 and L is an unsaturated hydrocarbon containing at least one non-aromatic unsaturation which comprises contacting Cu 2 (CO) 2 C 2 O 4 with at least an equimolar amount of L in an inert organic solvent at a temperature sufficient to displace CO with L.
Claim 13
Dependent Claim
71 words
A process for preparing Cu 2 (CO) n L m C 2 O 4 where n is 0 or 1, m is from 1 to 2 and L is an unsaturated hydrocarbon containing at least one non-aromatic unsaturation which comprises contacting Cu 2 (CO) 2 C 2 O 4 with at least an equimolar amount of L in an inert organic solvent at a temperature sufficient to displace CO with L.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |