US3346670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of phosphate esters
Assignee: GAF Chemicals Corp
•
Filing: 1962-12-11
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Granted: 1967-10-10
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Expires: 1982-12-11
Abstract
No abstract record available.
Inventors
- 👤 John G Papalos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/098; C09; C09K; C09K3/00; C09K3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR THE PREPARATION OF PHOSPHATE ESTERS COMPRISING REACTING PHOSPHORUS PENTOXIDE WITH ETHOXYLATED NONYL PHENOL OR AN ETHOXYLATED ALIPHATIC ALCOHOL CONTAINING AT LEAST 6 CARBON ATOMS, WHEREIN A SMALL AMOUNT OF WATER IS ADDED TO SAID ETHOXYLATED NONYL PHENOL OR ALIPHATIC ALCOHOL PRIOR TO THE REACTION WITH PHOSPHORUS PENTOXIDE.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE PREPARATION OF PHOSPHATE ESTERS COMPRISING REACTING PHOSPHORUS PENTOXIDE WITH ETHOXYLATED NONYL PHENOL OR AN ETHOXYLATED ALIPHATIC ALCOHOL CONTAINING AT LEAST 6 CARBON ATOMS, WHEREIN A SMALL AMOUNT OF WATER IS ADDED TO SAID ETHOXYLATED NONYL PHENOL OR ALIPHATIC ALCOHOL PRIOR TO THE REACTION WITH PHOSPHORUS PENTOXIDE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |