US3251828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphosphoric acid esters of polyether polyols
Assignee: FMC Corp
•
Filing: 1962-10-23
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Granted: 1966-05-17
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Expires: 1982-10-23
Abstract
No abstract record available.
Inventors
- 👤 Martin R Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:47
CPC Classifications
C; C07; C07H; C07H11/00; C07H11/04; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/098; C07H15/00; C07H15/02; C07H15/04; C07H15/08; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5075; C08G18/5081; C08G18/5084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A PHOSPHORUS-CONTAINING POLYETHER POLYOL REACTION PRODUCT OF (A) THE PRODUCT FORMED BY THE ESTERFICATION OF (1) POLYPHOSPHORIC ACID CONTAINING 3-13% P2O5 IN EXCESS OF THE AMOUNT WHICH PROVIDES 100% H3PO4 WITH (2) A POLYOL SELECTED FROM THE GROUP CONSISTING OF POLYHYDROXYALKANES OF 3-6 HYDROXYL GROUPS AND 3-6 CARBON ATOMS, CARBOHYDRATES OF 5-8 HYDROXYL GROUPS AND 6-12 CARBON ATOMS, AND MIXTURES THEREOF, SAID POLYOL MOIETY BEING PRESENT IN THE AMOUNT OF 2-4 MOLES FOR EACH MOLE OF P2O5 IN EXCESS OF THE AMOUNT WHICH PROVIDES 100% H3PO4, AND (B) AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, EPICHLOROHYDRIN, AND BUTENE OXIDE BEING PRESENT IN AN AMOUNT SUFFICIENT TO NEUTRALIZE ALL PHOSPHORIC ACID GROUPS, BUT LESS THAN THE AMOUNT WHICH LOWERS THE HYDROXYL NUMBER OF THE REACTION PRODUCT BELOW 200.
Claim 2
Dependent Claim
133 words
A PHOSPHORUS-CONTAINING POLYETHER POLYOL REACTION PRODUCT OF (A) THE PRODUCT FORMED BY THE ESTERFICATION OF (1) POLYPHOSPHORIC ACID CONTAINING 3-13% P2O5 IN EXCESS OF THE AMOUNT WHICH PROVIDES 100% H3PO4 WITH (2) A POLYOL SELECTED FROM THE GROUP CONSISTING OF POLYHYDROXYALKANES OF 3-6 HYDROXYL GROUPS AND 3-6 CARBON ATOMS, CARBOHYDRATES OF 5-8 HYDROXYL GROUPS AND 6-12 CARBON ATOMS, AND MIXTURES THEREOF, SAID POLYOL MOIETY BEING PRESENT IN THE AMOUNT OF 2-4 MOLES FOR EACH MOLE OF P2O5 IN EXCESS OF THE AMOUNT WHICH PROVIDES 100% H3PO4, AND (B) AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, EPICHLOROHYDRIN, AND BUTENE OXIDE BEING PRESENT IN AN AMOUNT SUFFICIENT TO NEUTRALIZE ALL PHOSPHORIC ACID GROUPS, BUT LESS THAN THE AMOUNT WHICH LOWERS THE HYDROXYL NUMBER OF THE REACTION PRODUCT BELOW 200.
References Cited (Backward Citations)
GB452508A
Cited
US3134742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |