Patent US3291867A successfully refreshed from Google Patents.
US3291867A
Expired / Lapsed
US
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Phosphorus pentoxide-polyol fusion reaction products
Assignee: Merck and Co Inc
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Filing: 1962-11-19
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Granted: 1966-12-13
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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 21:13
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.
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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 |