Patent US3049516A successfully refreshed from Google Patents.
US3049516A
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Ordered hydroxy-terminated polyether-based urethane compositions
Assignee: Wyandotte Chemicals Corp
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Filing: 1959-03-26
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Granted: 1962-08-14
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Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Damusis Adolfas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN ORDERED HYDROXY-TERMINATED URETHANE COMPOSITION PREPARED SEQUENTIALLY BY FIRST MIXING AND REACTION TOGETHER ABOUT ONE MOLAR PROPORTION OF POLYPROPYLENEETHER GLYCOL (A) HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 134 AND 1000, WITH ABOUT TWO MOLAR PROPORTIONS OF ARYLENE DIISOCYANATE (C) SELECTED FROM THE GROUP CONSISTING OF PHENYLATE DIISOCYANATE, TOLYLENE DIISOCYANATE, AND DIPHENYLEMETHANE-4,4''-DIIOCYANATE, TO PRODUCE AN ISOCYANATE-TERMINATED POLYPROPYLENEETHER GLYCOL URETHANE, AND THEN MIXING AND REACTING ABOUT ONE MOLAR PROPORTION OF THE THUS-FORMED ISOCYANATE-TERMINATED URETHANE WITH ABOUT TWO MOLAR PROPORTIONS OF POLYETHER POLYOL (B) HAVE THE FORMULA:
Claim 2
Dependent Claim
84 words
AN ORDERED HYDROXY-TERMINATED URETHANE COMPOSITION PREPARED SEQUENTIALLY BY FIRST MIXING AND REACTION TOGETHER ABOUT ONE MOLAR PROPORTION OF POLYPROPYLENEETHER GLYCOL (A) HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 134 AND 1000, WITH ABOUT TWO MOLAR PROPORTIONS OF ARYLENE DIISOCYANATE (C) SELECTED FROM THE GROUP CONSISTING OF PHENYLATE DIISOCYANATE, TOLYLENE DIISOCYANATE, AND DIPHENYLEMETHANE-4,4''-DIIOCYANATE, TO PRODUCE AN ISOCYANATE-TERMINATED POLYPROPYLENEETHER GLYCOL URETHANE, AND THEN MIXING AND REACTING ABOUT ONE MOLAR PROPORTION OF THE THUS-FORMED ISOCYANATE-TERMINATED URETHANE WITH ABOUT TWO MOLAR PROPORTIONS OF POLYETHER POLYOL (B) HAVE THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |