Patent US2494326A successfully refreshed from Google Patents.
US2494326A
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Emulsion polymerization process
Assignee: Standard Oil Development Co
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Filing: 1945-07-03
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Granted: 1950-01-10
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Expires: 1965-07-03
Abstract
No abstract record available.
Inventors
- 👤 Arundale Erving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:41
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN THE MANUFACTURE OF SYNTHETIC RUBBER-LIKE MATERIALS BY THE POLYMERIZATION IN AQUEOUS EMULSION OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS PER MOLECULE, THE IMPROVEMENT WHICH COMPRISES USING AS POLYMERIZATION MODIFIER 0.125 TO 1.0% BASED ON TOTAL MONOMER OF AN ALIPHATIC MERCAPTAN MIXTURE CONSISTING OF ABOUT 55% DODECYL, ABOUT 30% TETRADECYL AND ABOUT 15% HEXADECYL MERCAPTAN.
Claim 2
Dependent Claim
59 words
IN THE MANUFACTURE OF SYNTHETIC RUBBER-LIKE MATERIALS BY THE POLYMERIZATION IN AQUEOUS EMULSION OF A CONJUGATED DIOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS PER MOLECULE, THE IMPROVEMENT WHICH COMPRISES USING AS POLYMERIZATION MODIFIER 0.125 TO 1.0% BASED ON TOTAL MONOMER OF AN ALIPHATIC MERCAPTAN MIXTURE CONSISTING OF ABOUT 55% DODECYL, ABOUT 30% TETRADECYL AND ABOUT 15% HEXADECYL MERCAPTAN.
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) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |