Patent JPS5459825A successfully refreshed from Google Patents.
US2994680A
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Graft copolymers of an alkenyl-substituted aromatic compound, and unsaturated ester and a preformed copolymer of an alkenyl-substituted aromatic compound and a polyolefin
Assignee: Shell USA Inc
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Filing: 1958-10-29
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Granted: 1961-08-01
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Expires: 1978-10-29
Abstract
No abstract record available.
Inventors
- 👤 Hammon Henry George
- 👤 Richard A Clark
- 👤 Jr John W Uttley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:33
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F257/00; C08F257/02; C08L; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A GRAFT COPOLYMER COMPOSITION COMPRISING THE PRODUCT OF POLYMERIZATION OF A MIXTURE OF (1) 40 TO 70 PARTS BY WEIGHT OF A MIXTURE OF AN ALKENYL-SUBSTITUTED AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF STYRENE, ALPHA-ALKYLSTYRENES AND THE MONO- AND DICHLOROAND MONO- AND POLYALKYL-SUBSTITUTED STYRENES WHEREIN THE SUBSTITUENTS ARE ATTACHED TO RING CARBON ATOMS, SAID SUBSTITUTED STYRENES CONTAINING UP TO 12 CARBON ATOMS, AND AN ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID ESTER CONTAINING UP TO 12 CARBON ATOMS, AND (2) 60 TO 30 PARTS BY WEIGHT OF A PREFORMED COPOLYMER OF 99.5 TO 90 PARTS BY WEIGHT OF AN ALKENYL-SUBSTITUTED AROMATIC COMPOUND HEREINBEFORE DESCRIBED AND 0.5 TO 10 PARTS BY WEIGHT OF A CONJUGATED DIENE CONTAINING FROM 4 TO 8 CARBON ATOMS.
Claim 2
Dependent Claim
120 words
A GRAFT COPOLYMER COMPOSITION COMPRISING THE PRODUCT OF POLYMERIZATION OF A MIXTURE OF (1) 40 TO 70 PARTS BY WEIGHT OF A MIXTURE OF AN ALKENYL-SUBSTITUTED AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF STYRENE, ALPHA-ALKYLSTYRENES AND THE MONO- AND DICHLOROAND MONO- AND POLYALKYL-SUBSTITUTED STYRENES WHEREIN THE SUBSTITUENTS ARE ATTACHED TO RING CARBON ATOMS, SAID SUBSTITUTED STYRENES CONTAINING UP TO 12 CARBON ATOMS, AND AN ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID ESTER CONTAINING UP TO 12 CARBON ATOMS, AND (2) 60 TO 30 PARTS BY WEIGHT OF A PREFORMED COPOLYMER OF 99.5 TO 90 PARTS BY WEIGHT OF AN ALKENYL-SUBSTITUTED AROMATIC COMPOUND HEREINBEFORE DESCRIBED AND 0.5 TO 10 PARTS BY WEIGHT OF A CONJUGATED DIENE CONTAINING FROM 4 TO 8 CARBON ATOMS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |