US3291867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus pentoxide-polyol fusion reaction products
Assignee: Merck and Co Inc
•
Filing: 1962-11-19
•
Granted: 1966-12-13
•
Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Shew Daniel
- 👤 Bernard W Greenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6461; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C08G18/30; C08G18/38; C08G18/3878; C08G18/3882; C08G18/3885; C08G18/42; C08G18/46; C08G18/4684; C08G18/48; C08G18/50; C08G18/5075; C08G18/5081; C08G18/5084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A COMPOSITION OF MATTER PREPARED BY THE FUSION REACTION OF A POLYOL HAVING FROM 3 TO 7 CARBON ATOMS AND FROM 3 TO 7 HYDROXYL GROUPS WITH PHOSPHORUS PENTOXIDE IN A PHOSPHORUS TO POLYOL MOLE RATIO OF ABOUT 0.25 TO FROM ABOUT 1 TO ABOUT 2 TO 1 AND AT A TEMPERATURE OF FROM ABOUT 80*C. TO ABOUT 200*C., SAID COMPOSITION OF MATTER HAVING A PHOSPHATE CONTEND OF FROM 33-80 MOLE PERCENT OF WHICH 55-98 PERCENT IS PRESENT AS THE DIBASIC PHOSPHATE AND FROM 2-45 PERCENT IS PRESENT AS THE MONOBASIC PHOSPHATE AS DETERMINED BY POTENTIOMETRIC TITRATION; AND ACID NUMBER OF FROM 200-800; AND A HYDROXYL NUMBER OF FROM 200-1200; SAID POLYOL RESIDUE BEING DERIVED FROM A POLYOL HAVING FROM THREE OF SEVEN CARBON ATOMS AND FROM THREE TO SEVEN HYDROXYL GROUPS.
Claim 2
Dependent Claim
132 words
A COMPOSITION OF MATTER PREPARED BY THE FUSION REACTION OF A POLYOL HAVING FROM 3 TO 7 CARBON ATOMS AND FROM 3 TO 7 HYDROXYL GROUPS WITH PHOSPHORUS PENTOXIDE IN A PHOSPHORUS TO POLYOL MOLE RATIO OF ABOUT 0.25 TO FROM ABOUT 1 TO ABOUT 2 TO 1 AND AT A TEMPERATURE OF FROM ABOUT 80*C. TO ABOUT 200*C., SAID COMPOSITION OF MATTER HAVING A PHOSPHATE CONTEND OF FROM 33-80 MOLE PERCENT OF WHICH 55-98 PERCENT IS PRESENT AS THE DIBASIC PHOSPHATE AND FROM 2-45 PERCENT IS PRESENT AS THE MONOBASIC PHOSPHATE AS DETERMINED BY POTENTIOMETRIC TITRATION; AND ACID NUMBER OF FROM 200-800; AND A HYDROXYL NUMBER OF FROM 200-1200; SAID POLYOL RESIDUE BEING DERIVED FROM A POLYOL HAVING FROM THREE OF SEVEN CARBON ATOMS AND FROM THREE TO SEVEN HYDROXYL GROUPS.
References Cited (Backward Citations)
US1598370A
Cited
US2177984A
Cited
US2435905A
Cited
US2911379A
Cited
US2999823A
Cited
US3005007A
Cited
US3053878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |