US3418268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing polylactam compositions
Assignee: Monsanto Co
•
Filing: 1964-06-26
•
Granted: 1968-12-24
•
Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Ross M Hedrick
- 👤 Paul A Tierney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:54
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08G69/18; C08K; C08K9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR PREPARING POLYLACTAM COMPOSITIONS COMPRISING (A) COMBINING UNDER CONDITIONS INCAPABLE OF CAUSING RAPID POLYMERIZATION OF THE LACTAM MONOMER, LACTAM MONOMER, BASIC LACTAM POLYMERIZATION CATALYST, ORGANIC ISOCYANATE, INORGANIC FILLER MATERIAL IN A QUANTITY SUFFICIENT TO PROVIDE A COMPOSITION CONTAINING FROM ABOUT 5 TO ABOUT 95% BY WEIGHT OF SAID FILLER MATERIAL, AND A POLYURETHANE POLYMERIZATION CATALYST CAPABLE OF CATALYZING THE REACTION OF A DI- OR POLYISOCYANATE WITH A DI- OR POLYOL; AND (B) HEATING THE MIXTURE FORMED THEREBY AT A TEMPERATURE FROM ABOUT THE MELTING POINT OF SAID LACTAM UP TO ABOUT 250*C. FOR A TIME SUFFICIENT TO CAUSE POLYMERIZATION OF THE LACTAM.
Claim 2
Dependent Claim
104 words
A PROCESS FOR PREPARING POLYLACTAM COMPOSITIONS COMPRISING (A) COMBINING UNDER CONDITIONS INCAPABLE OF CAUSING RAPID POLYMERIZATION OF THE LACTAM MONOMER, LACTAM MONOMER, BASIC LACTAM POLYMERIZATION CATALYST, ORGANIC ISOCYANATE, INORGANIC FILLER MATERIAL IN A QUANTITY SUFFICIENT TO PROVIDE A COMPOSITION CONTAINING FROM ABOUT 5 TO ABOUT 95% BY WEIGHT OF SAID FILLER MATERIAL, AND A POLYURETHANE POLYMERIZATION CATALYST CAPABLE OF CATALYZING THE REACTION OF A DI- OR POLYISOCYANATE WITH A DI- OR POLYOL; AND (B) HEATING THE MIXTURE FORMED THEREBY AT A TEMPERATURE FROM ABOUT THE MELTING POINT OF SAID LACTAM UP TO ABOUT 250*C. FOR A TIME SUFFICIENT TO CAUSE POLYMERIZATION OF THE LACTAM.
References Cited (Backward Citations)
US3156576A
Cited
US2763573A
Cited
US3028369A
Cited
US3017392A
Cited
US3216976A
Cited
US3150109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |