US3849360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurea-urethanes produced from a mixture of two polyamines
Assignee: Reichhold Chemicals Inc
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Filing: 1970-09-03
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Granted: 1974-11-19
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Expires: 1990-09-03
Abstract
Abstract 1. A UREA-URETHANE COMPOSITION OF AN ESSENTIALLY STOICHIOMETRIC ACOUNT OF POLYAMINE WITH AN ISOCYANATE-TERMINATED POLYURETHANE PREPOLYMER OF 4,4''-BIS(ISOCYANATOCYCLOHEXYL)METHANE AND POLYMER POLYOL, SAID POLYAMINE CONSISTING ESSENTIALLY OF ABOUT 20 TO 80 WEIGHT PERCENT OF 4,4''-BIS(AMINOCYCLOHEXY)METHANE AND ABOUT 20 TO 80 WEIGHT PERCENT OF MONOCYCLIC, ALICYCLIC HYDROCARBON DIAMINE OF 5 TO ABOUT 16 CARBON ATOMS, 5 TO 10 OF WHICH FORM A RING STRUCTURE.
Inventors
- 👤 B Farah
- 👤 H Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/758; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A UREA-URETHANE COMPOSITION OF AN ESSENTIALLY STOICHIOMETRIC ACOUNT OF POLYAMINE WITH AN ISOCYANATE-TERMINATED POLYURETHANE PREPOLYMER OF 4,4''-BIS(ISOCYANATOCYCLOHEXYL)METHANE AND POLYMER POLYOL, SAID POLYAMINE CONSISTING ESSENTIALLY OF ABOUT 20 TO 80 WEIGHT PERCENT OF 4,4''-BIS(AMINOCYCLOHEXY)METHANE AND ABOUT 20 TO 80 WEIGHT PERCENT OF MONOCYCLIC, ALICYCLIC HYDROCARBON DIAMINE OF 5 TO ABOUT 16 CARBON ATOMS, 5 TO 10 OF WHICH FORM A RING STRUCTURE.
Claim 2
Dependent Claim
61 words
A UREA-URETHANE COMPOSITION OF AN ESSENTIALLY STOICHIOMETRIC ACOUNT OF POLYAMINE WITH AN ISOCYANATE-TERMINATED POLYURETHANE PREPOLYMER OF 4,4''-BIS(ISOCYANATOCYCLOHEXYL)METHANE AND POLYMER POLYOL, SAID POLYAMINE CONSISTING ESSENTIALLY OF ABOUT 20 TO 80 WEIGHT PERCENT OF 4,4''-BIS(AMINOCYCLOHEXY)METHANE AND ABOUT 20 TO 80 WEIGHT PERCENT OF MONOCYCLIC, ALICYCLIC HYDROCARBON DIAMINE OF 5 TO ABOUT 16 CARBON ATOMS, 5 TO 10 OF WHICH FORM A RING STRUCTURE.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |