US3341498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coating compositions derived from a polyester of delta4-tetrahydrophthalic acid and a polyol
Assignee: Honeywell International Inc
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Filing: 1963-04-19
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Granted: 1967-09-12
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Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Skreckoski
- 👤 Maurice E Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:00
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/68; C08G18/683; C08G18/686
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A LIQUID COATING COMPOSITION COMPOSED OF AN INERT NORMALLY LIQUID ORGANIC SOLVENT CONTAINING IN SOLUTION AS FILM FORMER THE REACTION PRODUCT OF SUBSTANTIALLY STOICHIOMETRIC EQUIVALENT QUANTITIES OF AN ORGANIC POLYISOCYANATE AND A HYDROXYL TERMINATED POLYESTER HAVING AN ACID NUMBER BELOW 10 AND A HYDROXYL NUMBER OF AT LEAST 60, SAID POLYESTER OBTAINED BY CONDENSASTION OF A DIBASIC CARBOXYLIC ACID COMPONENT IN WHICH A MAJOR PROPORTION OF THE DIBASIC CARBOXYLIC ACID COMPONENT IS $4-TETHAHYDROPHTHALIC ACID AND A POLYOL, SAID FILM FORMER BEING PRODUCED BY MAINTAINING SAID POLYESTER AND SAID ORGANIC POLYISOCYANATE IN THE PRESENCE OF AN INERT LIQUID ORGANIC SOLVENT AT A TEMPERATURE OF ABOUT 60*C. TO 120*C. UNTIL THE VISCOSITY OF THE REACTION MASS BECOMES CONSTANT, SAID REACTION MASS BEING FURTHER CHARACTERIZED BY THE SUBSTANTIAL ABSENCE OF FREE-ISOCYANATO AND HYDROXYL GROUPS.
Claim 2
Dependent Claim
131 words
A LIQUID COATING COMPOSITION COMPOSED OF AN INERT NORMALLY LIQUID ORGANIC SOLVENT CONTAINING IN SOLUTION AS FILM FORMER THE REACTION PRODUCT OF SUBSTANTIALLY STOICHIOMETRIC EQUIVALENT QUANTITIES OF AN ORGANIC POLYISOCYANATE AND A HYDROXYL TERMINATED POLYESTER HAVING AN ACID NUMBER BELOW 10 AND A HYDROXYL NUMBER OF AT LEAST 60, SAID POLYESTER OBTAINED BY CONDENSASTION OF A DIBASIC CARBOXYLIC ACID COMPONENT IN WHICH A MAJOR PROPORTION OF THE DIBASIC CARBOXYLIC ACID COMPONENT IS $4-TETHAHYDROPHTHALIC ACID AND A POLYOL, SAID FILM FORMER BEING PRODUCED BY MAINTAINING SAID POLYESTER AND SAID ORGANIC POLYISOCYANATE IN THE PRESENCE OF AN INERT LIQUID ORGANIC SOLVENT AT A TEMPERATURE OF ABOUT 60*C. TO 120*C. UNTIL THE VISCOSITY OF THE REACTION MASS BECOMES CONSTANT, SAID REACTION MASS BEING FURTHER CHARACTERIZED BY THE SUBSTANTIAL ABSENCE OF FREE-ISOCYANATO AND HYDROXYL GROUPS.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |