US3824221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallated polymers
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-01-02
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Granted: 1974-07-16
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Expires: 1990-01-02
Abstract
Abstract METALLATED POLYMERS AND COPOLYMERS AND STYRYLPHOSPHINE CONTAINING A PLURALITY OF PR2 GROUPS (WHERE R IS A HYDROCARBYL GROUP) AS SUBSTITUENTS OF THE BENZENE RINGS, TRANSITION METAL ATOMS BEING CO-ORDINATED TO THE PHOSPHORUS ATOMS. SEVERAL METHODS OF PREPARATION ARE DESCRIBED. THE METALLATED POLYMERS MAY BE USED TO CATALYSE A VARIETY OF LIQUID OR GAS PHASE ORGANIC REACTIONS, SUCH AS HYDROFORMYLATION, OLEFIN OLIGOMERISATION, HYDROGENATION AND DISPROPORTIONATION THE REACTIONS FOR WHICH THEY ARE EFFECTIVE DEPENDING ON THE CHOICE OF METAL AND POLYMER. COPOLYMERS, ESPECIALLY WITH STYRENE, ARE ALSO INCLUDED.
Inventors
- 👤 P Ragg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/165; B01J31/1658; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/24; B01J31/2404; C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54; C07F9/5428; C08; C08F; C08F30/00; C08F30/02; C08F8/00; C08F8/42; B01J2231/00; B01J2231/20; B01J2231/30; B01J2231/32; B01J2231/321; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2531/00; B01J2531/40; B01J2531/46; B01J2531/50; B01J2531/56; B01J2531/60; B01J2531/62; B01J2531/70; B01J2531/72; B01J2531/80; B01J2531/82; B01J2531/824; B01J2531/828; B01J2531/84; B01J2531/845; B01J2531/847
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |