US3786029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of certain aminoorthoesters as polyurethane catalysts
Assignee: Individual
•
Filing: 1972-08-01
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Granted: 1974-01-15
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Expires: 1992-08-01
Abstract
Abstract AMINOORTHOESTERS ARE PREPARED FROM AMINO ALKANOLS AND ORTHOESTERS OF THE FORMULA R-C(OR'')3. SUCH AMINOORTHOESTERS HAVE UTILITY AS ACTIVATORS IN POLYURETHANE FORMATION, AS CURING AGENTS FOR EPOXY RESINS, AND IN OTHER USES. ADVANTAGEOUS PROPERTIES INCLUDE GOOD STABILITY, LOW ODOR, LOW TOXICITY AND GOOD ACTIVITY IN ITS USE FIELDS.
Inventors
- 👤 I Bechara
- 👤 D Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:49
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/504; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1833
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |