US3933770A
Expired / Lapsed
US
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Method of preparing transition metal complex catalysts
Assignee: Tokyo Institute of Technology
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Filing: 1974-03-20
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Granted: 1976-01-20
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Expires: 1994-03-20
Abstract
Abstract There is provided a method of preparing transition metal complex catalysts combined with organic high polymers.
Inventors
- 👤 Sakuji Ikeda
- 👤 Atsumu Ozaki
- 👤 Makoto Okawara
- 👤 Tsutomu Mizoroki
- 👤 Masahiro Uchino
- 👤 Hideki Shirakawa
- 👤 Noboru Kawata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:12
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/24; B01J31/2404; B01J31/165; B01J31/1658; B01J31/18; B01J31/1805; B01J31/181; B01J31/1815; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C08; C08F; C08F10/00; C08F110/00; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/824; B01J2531/828; B01J2531/84; B01J2531/847; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/16; C07C2531/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
66 words
A method for preparing transition metal complex catalysts combined with organic high polymers, comprising mixing a halogenated high polymer selected from the group consisting of chlorinated, brominated and iodinated polystyrene and chlorinated, brominated and iodinated styrene-divinylbenzene copolymer with a complex of transition metal selected from the group consisting of nickel, palladium and platinum in an organic solvent, said transition metal being in a low oxidation state.
Claim 2
Independent Claim
66 words
A method for preparing transition metal complex catalysts combined with organic high polymers, comprising mixing a halogenated high polymer selected from the group consisting of chlorinated, brominated and iodinated polystyrene and chlorinated, brominated and iodinated styrene-divinylbenzene copolymer with a complex of transition metal selected from the group consisting of nickel, palladium and platinum in an organic solvent, said transition metal being in a low oxidation state.
Claim 3
Dependent Claim
23 words
A method according to claim 1 said transition metal complex is one selected from the group consisting of tetrakis(triphenylphosphine)nickel, tetrakis(triphenylphosphine)palladium, tetrakis(triphenylphosphine)platinum and diethyl(dipyridyl)nickel.
References Cited (Backward Citations)
US3342755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |