US3267078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyether urethane coating composition cured with a di-imine
Assignee: Wyandotte Chemicals Corp
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Filing: 1963-12-16
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Granted: 1966-08-16
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Damusis Adolfas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5075; C08G18/08; C08G18/10; C08G2150/00; C08G2150/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A POLYURETHANE COATING COMPOSITION WHICH COMPRISES, ON THE BASIS OF THE TOTAL WEIGHT OF THE COMPOSITION, ABOUT 25 TO 100 WEIGHT PERCENT OF A DIMINE AND A BLOCKED ISOCYNATE-TERMINATED POLYETHER BASED URETHANE INTERMEDIATE IN WHICH SAID POLYETHER HAS A MOLECULAR WEIGHT OF ABOUT 134 TO 6000, AND ABOUT 0 TO 75 WEIGHT PERCENT OF AN INERT SOLVENT; THE AMOUNTS OF SAID INTERMEDIATE AND SAID DIIMINE BEING SUCH THAT UPON CURING OF SAID COMPOSITION THERE ARE PRESENT 0.8 TO 2.2 AMINE EQUIVALENTS FOR EACH ISOCYANATE EQUIVALENT FURTHERMORE, SAID DIIMINE HAVING THE FORMULA:
Claim 2
Dependent Claim
91 words
A POLYURETHANE COATING COMPOSITION WHICH COMPRISES, ON THE BASIS OF THE TOTAL WEIGHT OF THE COMPOSITION, ABOUT 25 TO 100 WEIGHT PERCENT OF A DIMINE AND A BLOCKED ISOCYNATE-TERMINATED POLYETHER BASED URETHANE INTERMEDIATE IN WHICH SAID POLYETHER HAS A MOLECULAR WEIGHT OF ABOUT 134 TO 6000, AND ABOUT 0 TO 75 WEIGHT PERCENT OF AN INERT SOLVENT; THE AMOUNTS OF SAID INTERMEDIATE AND SAID DIIMINE BEING SUCH THAT UPON CURING OF SAID COMPOSITION THERE ARE PRESENT 0.8 TO 2.2 AMINE EQUIVALENTS FOR EACH ISOCYANATE EQUIVALENT FURTHERMORE, SAID DIIMINE HAVING THE FORMULA:
References Cited (Backward Citations)
GB733624A
Cited
US3134755A
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US3036020A
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US3054757A
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US3127436A
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US3156658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |