US2971933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-hardening plastic composition
Assignee: Individual
•
Filing: 1957-07-05
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Granted: 1961-02-14
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Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Carl L Beal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:26
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L63/00; C08L77/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A FLOWABLE PLASTIC COMPOSITION CAPABLE OF BECOMING A RIGID TOUGH HARD SOLID BY HEATING AND SUITABLE FOR MAKING SUPERIOR HOLLOW HIGH PLASTIC HEELS BY GYRATIONAL CASTING, WHICH COMPOSITION COMPRISES 100 PARTS BY WEIGHT OF A DISPERSION-TYPE POLYVINYL CHLORIDE RESIN OF FINE PARTICLE SIZE RANGING FOR THE MOST PART FROM ABOUT 0.1 TO 10 MICRONS, 25 TO 75 PARTS BY WEIGHT OF LIQUID DISPERSANT FOR SAID POLYVINYL CHLORIDE RESIN CONTAINING AT LEAST ONE OF THE METHACRYLATE DIESTERS OF AN ETHYLENE GLYCOL SELECTED FROM THE CLASS CONSISTING OF ETHYLENE GLYCOL DIMETHACRYLATE, DIETHYLENE GLYCOL DIMETHACRYLATE, TRIETHYLENE GLYCOL DIMETHACRYLATE AND TETRAETHYLENE GLYCOL DIMETHACRYLATE, 2 TO 5 PARTS BY WEIGHT OF A FREE-RADICAL PEROXIDE CATALYST, 12 TO 25 PARTS BY WEIGHT OF A FLUID POLYAMIDE RESIN CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A FAT ACID OF THE FORMULA NHOOC-R-COOH WITH AN ALIPHATIC POLYAMINE OF THE FORMULA NH2N-R''-NH2, WHEREIN R IS A HYDROCARBON RADICAL, R'' IS AN ALIPHATIC HYDROCARBON RADICAL, AND N IS THE NUMBER OF MOLECULES OF EACH OF THE TWO REACTANTS FORMING THE POLYAMIDE RESIN, AND 10 TO 20 PARTS BY WEIGHT OF AN EPOXY RESIN COMPRISING A REACTION PRODUCT OF THE FORMULA
Claim 2
Dependent Claim
190 words
A FLOWABLE PLASTIC COMPOSITION CAPABLE OF BECOMING A RIGID TOUGH HARD SOLID BY HEATING AND SUITABLE FOR MAKING SUPERIOR HOLLOW HIGH PLASTIC HEELS BY GYRATIONAL CASTING, WHICH COMPOSITION COMPRISES 100 PARTS BY WEIGHT OF A DISPERSION-TYPE POLYVINYL CHLORIDE RESIN OF FINE PARTICLE SIZE RANGING FOR THE MOST PART FROM ABOUT 0.1 TO 10 MICRONS, 25 TO 75 PARTS BY WEIGHT OF LIQUID DISPERSANT FOR SAID POLYVINYL CHLORIDE RESIN CONTAINING AT LEAST ONE OF THE METHACRYLATE DIESTERS OF AN ETHYLENE GLYCOL SELECTED FROM THE CLASS CONSISTING OF ETHYLENE GLYCOL DIMETHACRYLATE, DIETHYLENE GLYCOL DIMETHACRYLATE, TRIETHYLENE GLYCOL DIMETHACRYLATE AND TETRAETHYLENE GLYCOL DIMETHACRYLATE, 2 TO 5 PARTS BY WEIGHT OF A FREE-RADICAL PEROXIDE CATALYST, 12 TO 25 PARTS BY WEIGHT OF A FLUID POLYAMIDE RESIN CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A FAT ACID OF THE FORMULA NHOOC-R-COOH WITH AN ALIPHATIC POLYAMINE OF THE FORMULA NH2N-R''-NH2, WHEREIN R IS A HYDROCARBON RADICAL, R'' IS AN ALIPHATIC HYDROCARBON RADICAL, AND N IS THE NUMBER OF MOLECULES OF EACH OF THE TWO REACTANTS FORMING THE POLYAMIDE RESIN, AND 10 TO 20 PARTS BY WEIGHT OF AN EPOXY RESIN COMPRISING A REACTION PRODUCT OF THE FORMULA
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) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |