US3201375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of acyl peroxides as catalysts in the preparation of acrylonitrile-styrenealpha-methyl-styrene terpolymers
Assignee: Foster Grant Co Inc
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Filing: 1964-11-24
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Granted: 1965-08-17
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Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Arnold B Finestone
- 👤 James S Pavlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:32
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F212/10; C08F212/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF PREPARING THEMOPLASTIC RESINOUS COMBETWEEN ABOUT 60*C. AND ABOUT 125*C., IN AQUEOUS SUSPENSION, UNTIL THE CONVERSION OF MONOMER IS BETWEEN 60% AND 92%, BASED ON TOTAL MONOMER CHARGE, A POLYMERIZABLE COMPOSITION COMPRISING BY WEIGHT ABOUT 22 TO 45 PARTS ACRYLONITRILE, ABOUT 5 TO 35 PARTS ALPHA-METHYLSTYRENE, AND ABOUT 75 TO 30 PARTS STYRENE IN THE PRESENCE OF FROM ABOUT 0.02% TO 2.0%, BY WEIGHT OF THE COMBINED WEIGHT OF THE MONOMERS, OF A WATER INSOLUBLE ALIPHATIC PEROXIDE CATALYST HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
84 words
THE METHOD OF PREPARING THEMOPLASTIC RESINOUS COMBETWEEN ABOUT 60*C. AND ABOUT 125*C., IN AQUEOUS SUSPENSION, UNTIL THE CONVERSION OF MONOMER IS BETWEEN 60% AND 92%, BASED ON TOTAL MONOMER CHARGE, A POLYMERIZABLE COMPOSITION COMPRISING BY WEIGHT ABOUT 22 TO 45 PARTS ACRYLONITRILE, ABOUT 5 TO 35 PARTS ALPHA-METHYLSTYRENE, AND ABOUT 75 TO 30 PARTS STYRENE IN THE PRESENCE OF FROM ABOUT 0.02% TO 2.0%, BY WEIGHT OF THE COMBINED WEIGHT OF THE MONOMERS, OF A WATER INSOLUBLE ALIPHATIC PEROXIDE CATALYST HAVING THE GENERAL FORMULA
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |