US3671560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of palladium or platinum-containing compounds
Assignee: Phillips Petroleum Co
•
Filing: 1970-09-29
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Granted: 1972-06-20
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Expires: 1990-09-29
Abstract
Abstract Compounds of the formula M(Z3P)4, where M is palladium or platinum and Z is a hydrocarbon or substituted hydrocarbon radical, are produced by reacting the metal in elemental form with a corresponding Z3P compound. One specific example is the production of tetrakis(triphenylphosphine)palladium(O) by reacting elemental palladium with triphenylphosphine.
Inventors
- 👤 Darryl R Fahey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:54
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/0006; C07F15/006; C07F15/0066; C07F15/0086; C07F15/0093
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
27 words
The method of claim 1 wherein the contacting is carried out in the presence of a hydrocarbon in which said at least one Z3P compound is soluble.
Claim 2
Dependent Claim
16 words
The method of claim 2 wherein said material is recovered from the reaction medium by crystallization.
Claim 3
Dependent Claim
27 words
The method of claim 1 in which the contacting is for a period of 2 to 36 hours in the temperature range of 0* to 150* C.
Claim 4
Dependent Claim
21 words
The method oF claim 1 in which the M is supported on a material that is inert under the contacting conditions.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein tetrakis(triphenylphosphine)palladium(0) is produced by contacting elemental palladium with triphenylphosphine.
Claim 6
Dependent Claim
16 words
The method of claim 6 wherein the contacting is carried out in the presence of benzene.
Claim 7
Dependent Claim
13 words
The method of claim 7 wherein the palladium is supported on barium sulfate.
Claim 8
Dependent Claim
24 words
The method of claim 8 wherein the contacting is carried out at a temperature substantially the same as the boiling point of the benzene.
References Cited (Backward Citations)
US3102899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |