US2694052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of vinyl acetate in emulsion
Assignee: Nopco Chemical Co
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Filing: 1950-05-19
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Granted: 1954-11-09
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Expires: 1970-05-19
Abstract
No abstract record available.
Inventors
- 👤 Peter J Canterino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:41
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR PREPARING A STABLE AQUEOUS EMULSION OF POLYVINYL ACETATE COMPRISING POLYMERIZING VINYL ACETATE IN AN AQUEOUS EMULSION IN THE PRESENCE OF FROM ABOUT 0.1% TO ABOUT 2.0% OF A FATTY ACID ESTER HAVING A CARBON CHAIN LENGTH OF FROM 9 TO 24 CARBON ATOMS AND CONTAINING AN SO3 GROUP, THE FATTY ACID PORTION OF SAID ESTER HAVING A CARBON CHAIN LENGTH OF 8 TO 18 CARBON ATOMS, A CATALYST SELECTED FROM THE CLASS CONSISTING OF PEROXY AND PERSULFATE CATALYST, FROM ABOUT 0.001% TO ABOUT 0.9% OF AN ALIPHATIC MERCAPTAN, FROM ABOUT 0.001% TO ABOUT 0.005% OF A COMPLEX INORGANIC CYANIDE COMPOUND SELECTED FROM THE CLASS CONSISTING OF SODIUM FERRICYANIDE, POTASSIUM FERRICYANIDE, SODIUM FERROCYANIDE AND POTASSIUM FERROCYANIDE AND FROM ABOUT 1.0% TO ABOUT 10.0% POLYVINYL ALCOHOL.
Claim 2
Dependent Claim
127 words
A PROCESS FOR PREPARING A STABLE AQUEOUS EMULSION OF POLYVINYL ACETATE COMPRISING POLYMERIZING VINYL ACETATE IN AN AQUEOUS EMULSION IN THE PRESENCE OF FROM ABOUT 0.1% TO ABOUT 2.0% OF A FATTY ACID ESTER HAVING A CARBON CHAIN LENGTH OF FROM 9 TO 24 CARBON ATOMS AND CONTAINING AN SO3 GROUP, THE FATTY ACID PORTION OF SAID ESTER HAVING A CARBON CHAIN LENGTH OF 8 TO 18 CARBON ATOMS, A CATALYST SELECTED FROM THE CLASS CONSISTING OF PEROXY AND PERSULFATE CATALYST, FROM ABOUT 0.001% TO ABOUT 0.9% OF AN ALIPHATIC MERCAPTAN, FROM ABOUT 0.001% TO ABOUT 0.005% OF A COMPLEX INORGANIC CYANIDE COMPOUND SELECTED FROM THE CLASS CONSISTING OF SODIUM FERRICYANIDE, POTASSIUM FERRICYANIDE, SODIUM FERROCYANIDE AND POTASSIUM FERROCYANIDE AND FROM ABOUT 1.0% TO ABOUT 10.0% POLYVINYL ALCOHOL.
References Cited (Backward Citations)
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US2434054A
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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) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |