Patent US2734883A successfully refreshed from Google Patents.
US2734883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing butadiene
Assignee: —
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Filing: —
•
Granted: 1956-02-14
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Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:51
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR MAKING SYNTHETIC RUBBER LATICES BY THE EMULSION POLYMERIZATION OF BUTADIENE 1,3 AND STYRENE IN WHICH THE BUTADIENE 1,3 AND THE STYRENE ARE POLYMERIZED IN THE PRESENCE OF ROSIN SOAP AS A SAPONIFIABLE EMULSIFIER AND A PERSULFATE CATALYST WHICH ON DECOMPOSITION YIELDS SULPHUR ACID, AND IN WHICH ALKALINE MATERIAL IS ADDED DURING THE POLYMERIZATION REACTION TO MAINTAIN THE PH OF THE REACTION MIXTURE ABOVE THE EQUIVALENCE POINT OF THE RATIO SOAP, NAMELY, A PH OF ABOUT 9.7.
Claim 2
Dependent Claim
79 words
A PROCESS FOR MAKING SYNTHETIC RUBBER LATICES BY THE EMULSION POLYMERIZATION OF BUTADIENE 1,3 AND STYRENE IN WHICH THE BUTADIENE 1,3 AND THE STYRENE ARE POLYMERIZED IN THE PRESENCE OF ROSIN SOAP AS A SAPONIFIABLE EMULSIFIER AND A PERSULFATE CATALYST WHICH ON DECOMPOSITION YIELDS SULPHUR ACID, AND IN WHICH ALKALINE MATERIAL IS ADDED DURING THE POLYMERIZATION REACTION TO MAINTAIN THE PH OF THE REACTION MIXTURE ABOVE THE EQUIVALENCE POINT OF THE RATIO SOAP, NAMELY, A PH OF ABOUT 9.7.
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) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |