Patent US1775263A successfully refreshed from Google Patents.
Patent US2500983A successfully refreshed from Google Patents.
US2500983A
Expired / Lapsed
US
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Emulsion polymerization process and product
Assignee: Standard Oil Development Co
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Filing: 1945-12-28
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Granted: 1950-03-21
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Expires: 1965-12-28
Abstract
No abstract record available.
Inventors
- 👤 Per K Frolich
- 👤 Byron M Vanderbilt
- 👤 Miller W Swaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:51
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A COMPOSITION COMPRISING A FREE, HIGHLY UNSATURATED, HIGHER FATTY ACID AN OILY, SICCATIVE POLYMER HAVING AN INTRINSIC VISCOSITY BETWEEN 0.05 AND 0.40, SAID COMPOSITION BEING OBTAINED BY POLYMERIZING A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS PER MOLECULE TO A CONVERSION OF UP TO 90% OF MONOMER AT A TEMPERATURE BETWEEN 25 AND 70* C. FOR A PERIOD NOT EXCEEDING 21 HOURS IN AQUEOUS EMULSION IN THE PRESENCE OF 3 TO 8% BASED ON THE MONOMER OF A C6 TO C16 TERTIARY ALIPHATIC MERCAPTAN AND IN THE PRESENCE OF A WATER SOLUBLE, HIGHLY UNSATURATED, HIGHER FATTY ACID SOAP EMULSIFER, BREAKING THE REACTED EMULSION BY MEANS OF BRINE AND SUFFICIENT ACID TO CONVERT ALL OF THE SOAP EMULSIFIER TO FREE FATTY ACID, SEPARATING THE OIL LAYER FROM THE WATER LAYER AND WASHING THE OIL LAYER TO REMOVE EXTRANEOUS MATERIAL THEREFROM.
Claim 2
Dependent Claim
140 words
A COMPOSITION COMPRISING A FREE, HIGHLY UNSATURATED, HIGHER FATTY ACID AN OILY, SICCATIVE POLYMER HAVING AN INTRINSIC VISCOSITY BETWEEN 0.05 AND 0.40, SAID COMPOSITION BEING OBTAINED BY POLYMERIZING A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS PER MOLECULE TO A CONVERSION OF UP TO 90% OF MONOMER AT A TEMPERATURE BETWEEN 25 AND 70* C. FOR A PERIOD NOT EXCEEDING 21 HOURS IN AQUEOUS EMULSION IN THE PRESENCE OF 3 TO 8% BASED ON THE MONOMER OF A C6 TO C16 TERTIARY ALIPHATIC MERCAPTAN AND IN THE PRESENCE OF A WATER SOLUBLE, HIGHLY UNSATURATED, HIGHER FATTY ACID SOAP EMULSIFER, BREAKING THE REACTED EMULSION BY MEANS OF BRINE AND SUFFICIENT ACID TO CONVERT ALL OF THE SOAP EMULSIFIER TO FREE FATTY ACID, SEPARATING THE OIL LAYER FROM THE WATER LAYER AND WASHING THE OIL LAYER TO REMOVE EXTRANEOUS MATERIAL THEREFROM.
References Cited (Backward Citations)
US1950438A
Cited
US2300056A
Cited
US2137584A
Cited
US2227517A
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US2281613A
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US2351108A
Cited
US2390105A
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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) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |