Patent US3674768A successfully refreshed from Google Patents.
US3674768A
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Modified polyalcohol
Assignee: Individual
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Filing: 1970-01-12
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Granted: 1972-07-04
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Expires: 1990-01-12
Abstract
Abstract Transition metal-containing catalysts are prepared by reacting a transition metal compound with a polymer containing trivalent phosphorus and hydroxyl groups. The phosphorus-containing polymer is prepared by reacting a polymer containing hydroxyl groups such as polyvinyl alcohol with a trivalent phosphorus compound such as phenyl dichlorophosphine. Preferred transition metals are the Group VIII metals. The catalysts are useful for hydroformylation, hydrogenation, oligomerization and carboxylation.
Inventors
- 👤 Keith George Allum
- 👤 Ronald David Hancock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:11
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
A polymeric material as claimed in claim 1 having a molecular weight of from 103 to 106.
Claim 2
Dependent Claim
16 words
A polymeric material as claimed in claim 1 wherein the metal is a Group VIII metal.
Claim 3
Dependent Claim
134 words
A process for the preparation of a polymeric material containing phosphorus atoms and atoms selected from a Group VIII metal atom, rhenium or molybdenum bonded to the phosphorus atoms which process comprises reacting (a) a polymeric material containing groups of the formula: where Z is a radical obtained by removing an -OH group from polyvinyl alcohol, R1 and R'''' which may be the same or different are halogen atoms or monovalent hyDrocarbon groups containing up to 20 carbon atoms or aryloxy or alkoxy groups containing up to 20 carbon atoms or of formula R2111N- where R111 is a group containing up to 10 carbon atoms or -OZ where Z is as defined above with (b) a Group VIII metal, rhenium or molybdenum metal compound at a temperature in the range -40* to 250* C.
Claim 4
Dependent Claim
18 words
A process as claimed in claim 4 wherein the reaction is effected in the presence of a solvent.
Claim 5
Dependent Claim
17 words
A process as claimed in claim 5 wherein the metal compound is a Group VIII metal compound.
Claim 6
Dependent Claim
23 words
A process as claimed in claim 4 wherein the metal compound contains a ligand which is displaced under the conditions of the reaction.
Claim 7
Dependent Claim
24 words
A process as claimed in claim 4 wherein the metal of the metal compound increases its coordination number under the conditions of the reaction.
Claim 8
Dependent Claim
24 words
A process as claimed in claim 4 wherein the reaction is effected in the presence of a solvent which takes part in the reaction.
Claim 9
Dependent Claim
26 words
A process as claimed in claim 6 wherein the Group VIII metal compound is a compound of nickel, rhodium, cobalt, ruthenium, iron, iridium, palladium, or platinum.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |