US3010935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granules of alkenylaromatic hydrocarbon polymer-rubber compositions with improved extrusion characteristics
Assignee: Dow Chemical Co
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Filing: 1957-10-23
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Granted: 1961-11-28
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Expires: 1977-10-23
Abstract
No abstract record available.
Inventors
- 👤 Donald Harold Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:09
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L25/16; C08L21/00; C08L7/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
AN EXTRUSION GRANULE OF A COMPOSITION CONSISTING ESSENTIALLY OF A MINOR PROPORTION, FROM 2 TO 20 PERCENT BY WEIGHT, OF A POLYMERIC MATERIAL FROM THE CLASS CONSISTING OF NATURAL, UNVULCANIZED RUBBER AND THE SYNTHETIC RUBBERY STYRENE-BUTADIENE, STYRENE-ISOPRENE, ACRYLONITRILEBUTADIENE AND ACRYLONITRILE-ISOPRENE COPOLYMERS,AND A PREDOMINANT PROPORTION, CORRESPONDINGLY FROM 98 TO 80 PERCENT BY WEIGHT, OF A MONOALKENYL BENZENE SERIES HYDROCARBON POLYMER FROM THE CLASS CONSISTING OF POLYSTYRENE, THE POLYVINYLTOLUENES, AND STYRENE-VINYLTOLUENE COPOLYMERS, THE SAID GRANULE HAVING A DENSITY AT TEMPERATURES BELOW ITS SECOND ORDER TRANSITION TEMPERATURE OF FROM 0.90 TO 1.10 AND A CRAZED SURFACE WITH AN AREA OF AT LEAST 0.20 SQUARE METER PER GRAM.
Claim 2
Dependent Claim
104 words
AN EXTRUSION GRANULE OF A COMPOSITION CONSISTING ESSENTIALLY OF A MINOR PROPORTION, FROM 2 TO 20 PERCENT BY WEIGHT, OF A POLYMERIC MATERIAL FROM THE CLASS CONSISTING OF NATURAL, UNVULCANIZED RUBBER AND THE SYNTHETIC RUBBERY STYRENE-BUTADIENE, STYRENE-ISOPRENE, ACRYLONITRILEBUTADIENE AND ACRYLONITRILE-ISOPRENE COPOLYMERS,AND A PREDOMINANT PROPORTION, CORRESPONDINGLY FROM 98 TO 80 PERCENT BY WEIGHT, OF A MONOALKENYL BENZENE SERIES HYDROCARBON POLYMER FROM THE CLASS CONSISTING OF POLYSTYRENE, THE POLYVINYLTOLUENES, AND STYRENE-VINYLTOLUENE COPOLYMERS, THE SAID GRANULE HAVING A DENSITY AT TEMPERATURES BELOW ITS SECOND ORDER TRANSITION TEMPERATURE OF FROM 0.90 TO 1.10 AND A CRAZED SURFACE WITH AN AREA OF AT LEAST 0.20 SQUARE METER PER GRAM.
References Cited (Backward Citations)
US2391638A
Cited
US2623243A
Cited
US2606163A
Cited
US2681898A
Cited
US2727878A
Cited
US2746086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |