US3317638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of long oxyalkylene chain phosphate polyols
Assignee: Wyandotte Chemicals Corp
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Filing: 1963-07-25
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Granted: 1967-05-02
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Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Robert J Hartman
- 👤 Louis C Pizzini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:14
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2639; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/098; C07F9/28; C07F9/30; C07F9/32; C07F9/3205; C07F9/3211; C07F9/3258; C07F9/3264; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5075; C08G63/00; C08G63/68; C08G63/692; C08G63/6924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD OF PRODUCING A PHOSPHOROUS-CONTAINING COMPOUND COMPRISING REACTING, IN THE PRESXENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF BORON TRIFLUORIDE AND STANNIC CHLORIDE, AN ALKYLENE OXIDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ACID OF PHOSPHORUS AND THE REACTION PRODUCT OF AN ACID OF PHOSPHORUS AND AN ALKYLENE OXIDE WHEREIN SAID ACID OF PHOSPHORUS CORRESPONDS TO A MIXTURE OF PHOSPHORUS PENTOXIDE AND WATER CONTAINING FROM ABOUT 72.4 TO 90 PERCENT BY WEIGHT OF PHOSPHORUS WITH FROM ABOUT 10 TO 27.6 PERCENT BY WEIGHT OF WATER AND SAID JPHOSPHORUS-CONTAINING COMPOUND INCORPORATES AN AVERAGE OF MORE THAN TWO MOLES OF SAID ALKYLENE OXIDE PER OH GORUP OF SAID ACID OF PHOSPHORUS.
Claim 2
Independent Claim
115 words
A METHOD OF PRODUCING A PHOSPHOROUS-CONTAINING COMPOUND COMPRISING REACTING, IN THE PRESXENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF BORON TRIFLUORIDE AND STANNIC CHLORIDE, AN ALKYLENE OXIDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ACID OF PHOSPHORUS AND THE REACTION PRODUCT OF AN ACID OF PHOSPHORUS AND AN ALKYLENE OXIDE WHEREIN SAID ACID OF PHOSPHORUS CORRESPONDS TO A MIXTURE OF PHOSPHORUS PENTOXIDE AND WATER CONTAINING FROM ABOUT 72.4 TO 90 PERCENT BY WEIGHT OF PHOSPHORUS WITH FROM ABOUT 10 TO 27.6 PERCENT BY WEIGHT OF WATER AND SAID JPHOSPHORUS-CONTAINING COMPOUND INCORPORATES AN AVERAGE OF MORE THAN TWO MOLES OF SAID ALKYLENE OXIDE PER OH GORUP OF SAID ACID OF PHOSPHORUS.
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |