US3239567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of alkylene oxides with a catalyst composed of aluminum hydride and a metal halide
Assignee: Olin Corp
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Filing: 1962-10-22
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Granted: 1966-03-08
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Expires: 1982-10-22
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:23
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C10; C10M; C10M7/00; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10N; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN THE PROCESS FOR POLYMERIZING AN ALKYLENE OXIDE TO A POLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE BETWEEN ABOUT 1,000 AND ABOUT 100,000 BY HEATING SAID ALKYLENE OXIDE IN THE PRESENCE OF A CATALYST AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 50*C. AND ABOUT 250*C., WHEREIN THE SAID ALKYLENE OXIDE IS SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, BUTYLENE OXIDE, 4,4,4-TRICHLOROBUTYLENE OXIDE-1,2, STYRENE OXIDE, AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS A CATALYST A CATALYTIC PROPORTION OF A MIXTURE OF ALUMINUM HYDREDE AND A METAL HALIDE, SAID METAL HALIDE BEING SELECTED FROM THE GROUP CONSISTING OF ANHYDROUS FERRIC CHLORIDE, FERRIC CHLORIDE HEXAHYDRATE, NICKEL BROMIDE, STANNIC CHLORIDE, BERYLLIUM CHLORIDE, ZIRCONIUM CHLORIDE, AICONIUM BROMIDE, ZIC CHLORIDE, COBALT CHLORIDE, ARSENOUS CHLORIDE, TITANIUM TETRACHLORIDE, AND MIXTURES THEREOF, THE WEIGHT RATIO OF ALUMINUM HYDRIDE TO SAID METAL HALIDE BEING BETWEEN ABOUT 3:1 AND ABOUT 1:9.
Claim 2
Dependent Claim
147 words
IN THE PROCESS FOR POLYMERIZING AN ALKYLENE OXIDE TO A POLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE BETWEEN ABOUT 1,000 AND ABOUT 100,000 BY HEATING SAID ALKYLENE OXIDE IN THE PRESENCE OF A CATALYST AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 50*C. AND ABOUT 250*C., WHEREIN THE SAID ALKYLENE OXIDE IS SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, BUTYLENE OXIDE, 4,4,4-TRICHLOROBUTYLENE OXIDE-1,2, STYRENE OXIDE, AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS A CATALYST A CATALYTIC PROPORTION OF A MIXTURE OF ALUMINUM HYDREDE AND A METAL HALIDE, SAID METAL HALIDE BEING SELECTED FROM THE GROUP CONSISTING OF ANHYDROUS FERRIC CHLORIDE, FERRIC CHLORIDE HEXAHYDRATE, NICKEL BROMIDE, STANNIC CHLORIDE, BERYLLIUM CHLORIDE, ZIRCONIUM CHLORIDE, AICONIUM BROMIDE, ZIC CHLORIDE, COBALT CHLORIDE, ARSENOUS CHLORIDE, TITANIUM TETRACHLORIDE, AND MIXTURES THEREOF, THE WEIGHT RATIO OF ALUMINUM HYDRIDE TO SAID METAL HALIDE BEING BETWEEN ABOUT 3:1 AND ABOUT 1:9.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |