US2559062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friedel-crafts metal halide-ether complexes as polymerization catalysts
Assignee: Standard Oil Development Co
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Filing: 1945-11-27
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Granted: 1951-07-03
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Expires: 1965-11-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Dornte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:49
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C08; C08F; C08F210/00; C08F210/04; C08F210/08; C08F210/10; C08F210/12; C08F236/00; C08F236/02; C08F236/04; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A POLYMERIZATION PROCESS FOR THE POLYMERIZATION OF AN UNSATURATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ISOBUTYLENE, STYRENE, AND ISOPRENE AT A TEMPERATURE BETWEEN -10* C. AND -103* C. COMPRISING THE STEPS OF ADDING TO THE COLD UNSATURATED MATERIAL A POLYMERIZATION CATALYST COMPRISING A COMPLEX OF A FRIEDEL-CRAFTS METAL HALIDE CHOSEN FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE, TITANIUM TETRACHLORIDE AND BORON FLUORIDE AND AN ETHER CHOSEN FROM THE CLASS CONSISTING OF ANISOL, DIPHENYL ETHER, B, B'' DICHLOROETHYLETHER, AND 1,2-DIPHENOXYETHANE, SAID CATALYST COMPLEX CONSISTING OF NO MORE THAN 40 MOLES OF ETHER PER MOLE OF METAL HALIDE.
Claim 2
Dependent Claim
97 words
A POLYMERIZATION PROCESS FOR THE POLYMERIZATION OF AN UNSATURATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ISOBUTYLENE, STYRENE, AND ISOPRENE AT A TEMPERATURE BETWEEN -10* C. AND -103* C. COMPRISING THE STEPS OF ADDING TO THE COLD UNSATURATED MATERIAL A POLYMERIZATION CATALYST COMPRISING A COMPLEX OF A FRIEDEL-CRAFTS METAL HALIDE CHOSEN FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE, TITANIUM TETRACHLORIDE AND BORON FLUORIDE AND AN ETHER CHOSEN FROM THE CLASS CONSISTING OF ANISOL, DIPHENYL ETHER, B, B'' DICHLOROETHYLETHER, AND 1,2-DIPHENOXYETHANE, SAID CATALYST COMPLEX CONSISTING OF NO MORE THAN 40 MOLES OF ETHER PER MOLE OF METAL HALIDE.
References Cited (Backward Citations)
AT106371B
Cited
GB441064A
Cited
FR801883A
Cited
US2243658A
Cited
US2360632A
Cited
US2384916A
Cited
US2379656A
Cited
US2382586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |