US4238358A
Expired / Lapsed
US
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Heterogeneous catalytic hydrogenation
Assignee: Western Kentucky University
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Filing: 1979-03-29
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Granted: 1980-12-09
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Expires: 1999-03-29
Abstract
Abstract Anthranilic acid has been anchored to polystyrene, and rhodium, palladium, platinum and ruthenium complexes of this modified polystyrene have been prepared. These catalysts will reduce a variety of olefinic and aromatic hydrocarbons, and also nitrile, nitro and carbonyl functional groups, said carbonyl groups being present in either ketones or aldehydes.
Inventors
- 👤 Norman L. Holy
- 👤 William A. Logan
- 👤 Karl D. Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:12
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/2243; B01J31/02; B01J31/06; B01J31/165; B01J31/1658; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/643; B01J2231/645; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/821; B01J2531/822; B01J2531/824; B01J2531/828
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
A heterogeneous catalyst consisting essentially of anthranilic acid complexed with a metal selected from the group consisting of rhodium, ruthenium, palladium and platinum, said anthranilic acid complex being chemically linked through the amino group thereof to a polymeric support having reactive sites thereon for effecting a chemical linkage between the anthranilic acid complex and said polymer.
Claim 2
Dependent Claim
56 words
A heterogeneous catalyst consisting essentially of anthranilic acid complexed with a metal selected from the group consisting of rhodium, ruthenium, palladium and platinum, said anthranilic acid complex being chemically linked through the amino group thereof to a polymeric support having reactive sites thereon for effecting a chemical linkage between the anthranilic acid complex and said polymer.
Claim 3
Dependent Claim
14 words
The catalyst of claim 1, wherein the metal complexed with anthranilic acid is rhodium.
Claim 4
Dependent Claim
14 words
The catalyst of claim 1, wherein the metal complexed with anthranilic acid is palladium.
Claim 5
Dependent Claim
12 words
The catalyst of claim 1, wherein the polymeric support is chloromethylated polystyrene.
Claim 6
Dependent Claim
86 words
A process for the preparation of the catalyst of claim 1 which comprises reacting anthranilic acid in an inert organic solvent with a polymer substrate having reactive sites thereon for effecting a chemical linkage between the amino group of said anthranilic acid and said polymer substrate, and thereafter contacting the thus treated polymer substrate, in an inert organic solvent, with a compound of a metal selected from the group consisting of rhodium, ruthenium, palladium and platinum for a time sufficient to effect a complexation reaction therebetween.
Claim 7
Dependent Claim
12 words
The process of claim 5, wherein said compound is a rhodium compound.
Claim 8
Dependent Claim
38 words
The process of claim 6, wherein the complex of rhodium with anthranilic acid which is chemically linked to said polymer substrate is thereafter treated with a reducing agent effective to reduce said rhodium to a lower valent state.
Claim 9
Dependent Claim
12 words
The process of claim 5, wherein said compound is a palladium compound.
Claim 10
Dependent Claim
18 words
The catalyst of claim 1, wherein the reactive sites on said polymeric support are CH 2 Cl groups.
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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |