US3257337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus containing polyurethane compositions
Assignee: Hooker Chemical Corp
•
Filing: 1962-12-31
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Granted: 1966-06-21
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Blaine O Schoepfle
- 👤 Francis M Kujawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0095; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/30; C08G18/38; C08G18/3878; C08J9/0014; C08J9/0038; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
A COMPOSITION OF MATTER COMPRISING (A) A HYDROXYL-CONTAINING POLYMER HAVING A HYDROXYL NUMBER FROM 25-900, (B) A PHOSPHORUS ACID WHICH CONTAINS AT LEAST ONE UNESTERIFIED ACID GROUP IN A PROPORTION FROM ABOUT 2 TO 20 PARTS BY WEIGHT PER HUNDRED PARTS OF HYDROXYL-CONTAINING POLYMER, AND (C) A NEUTRAL PHOSPHORUS COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
54 words
A COMPOSITION OF MATTER COMPRISING (A) A HYDROXYL-CONTAINING POLYMER HAVING A HYDROXYL NUMBER FROM 25-900, (B) A PHOSPHORUS ACID WHICH CONTAINS AT LEAST ONE UNESTERIFIED ACID GROUP IN A PROPORTION FROM ABOUT 2 TO 20 PARTS BY WEIGHT PER HUNDRED PARTS OF HYDROXYL-CONTAINING POLYMER, AND (C) A NEUTRAL PHOSPHORUS COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 3
Dependent Claim
62 words
A PROCESS WHICH COMPRISES REACTING (A) HYDROXYLCONTAINING POLYMER HAVING A HYDROXYL MEMBER FROM ABOUT 25 TO 900, (B) AN ORGANIC POLYISOCYANATE, AND (C) A PHOSPHORUS ACID HAVING AT LEAST ONE UNESTERIFIED ACID GROUP IN A PROPORTION FROM ABOUT 2 TO 20 PARTS BY WEIGHT PER HUNDRED PARTS OF HYDROXYL-CONTAINING POLYMER, IN THE PRESENCE OF (D) A PHOSPHORUS COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 4
Dependent Claim
62 words
A PROCESS WHICH COMPRISES REACTING (A) HYDROXYLCONTAINING POLYMER HAVING A HYDROXYL MEMBER FROM ABOUT 25 TO 900, (B) AN ORGANIC POLYISOCYANATE, AND (C) A PHOSPHORUS ACID HAVING AT LEAST ONE UNESTERIFIED ACID GROUP IN A PROPORTION FROM ABOUT 2 TO 20 PARTS BY WEIGHT PER HUNDRED PARTS OF HYDROXYL-CONTAINING POLYMER, IN THE PRESENCE OF (D) A PHOSPHORUS COMPOUND HAVING THE FOLLOWING FORMULA:
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |