US3115484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coagulation of aqueous polymer emulsion
Assignee: Bayer AG
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Filing: 1960-03-29
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Granted: 1963-12-24
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Expires: 1980-03-29
Abstract
No abstract record available.
Inventors
- 👤 Seriba Gottfried
- 👤 Heinz Anton Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:03
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS OF PRODUCING AND COAGULATING AQUEOUS EMULSIONS OF POLYMERS OF CONJUGATED DIENES WHICH COMPRISES POLYMERIZING A MONOMERS IN AN ALKALINE AQUEOUS MEDIUM IN THE PRESENCE OF A FATTY ACID EMULSIFIER OF AT LEAST 10 CARBON ATOMS, WHICH LOSES ITS EMULSIFIYING PROPERTY UPON TRANSFER INTO THE ACID PH RANGE, COAGULATING THE POLYMER EMULSION THUSOBAINED BY MIXING THE EMULSION WITH AN AMMONIUM SALT OF AN ACID WHICH IS NONVOLATILE AT TEMPERATURES OF ABOUT 60*-100*C. AND HEATING THE EMULSION TO ABOUT 60-100*C. TO COAGULATE SAID EMULSION, WHEREAFTER THE COAGULTE FORMED IS SEPARATED FROM THE AQUEOUS MEDIUM.
Claim 2
Dependent Claim
94 words
A PROCESS OF PRODUCING AND COAGULATING AQUEOUS EMULSIONS OF POLYMERS OF CONJUGATED DIENES WHICH COMPRISES POLYMERIZING A MONOMERS IN AN ALKALINE AQUEOUS MEDIUM IN THE PRESENCE OF A FATTY ACID EMULSIFIER OF AT LEAST 10 CARBON ATOMS, WHICH LOSES ITS EMULSIFIYING PROPERTY UPON TRANSFER INTO THE ACID PH RANGE, COAGULATING THE POLYMER EMULSION THUSOBAINED BY MIXING THE EMULSION WITH AN AMMONIUM SALT OF AN ACID WHICH IS NONVOLATILE AT TEMPERATURES OF ABOUT 60*-100*C. AND HEATING THE EMULSION TO ABOUT 60-100*C. TO COAGULATE SAID EMULSION, WHEREAFTER THE COAGULTE FORMED IS SEPARATED FROM THE AQUEOUS MEDIUM.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |