Patent US2683129A successfully refreshed from Google Patents.
US2683129A
Expired / Lapsed
US
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Process for preparing solutions of synthetic rubbery polymers
Assignee: Hercules Powder Co
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Filing: 1951-12-22
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Granted: 1954-07-06
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Expires: 1971-12-22
Abstract
No abstract record available.
Inventors
- 👤 Francis H Bratton
- 👤 Steffen F Dieckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:57
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J2321/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
THE PROCESS FOR PREPARING A SOLUTION OF SYNTETIC RUBBERY POLYMER COMPRISING MIXING A LATEX OF SYNTHETIC RUBBERY POLYMER OF THE GROUP CONSITING OF HOMOPOLYMERS OF A CONJUGATED DIOLEFIN, COPOLYMERS OF A MIXTURE OF CONJUGATED DIOLEFINS, AND COPOLYMERS OF A MIXTURE OF A CONJUGATED, DIOLEFIN AND A COPOLYMERIZABLE COMPOUND HAVING A SINGLE ETHYLENIC LINKAGE IN THE MOLECULE WITH AN EXTRACTION MEDIUM CONSISTING OF CARBON TETRACHLORIDE AND METHANOL, SAID CARBON TETRACHLORIDE AND METHANOL, TOGETHER WITH THE WATER IN SAID LATEX DEFINING A TERNARY SYSTEM WITHIN THE AREA ABCD ON THE APPENDED DRAWING, ALLOWING THE MIXTURE OF LATEX AND EXTRACTION MEDIUM TO SEPARTE INTO A LIGHT PHASE AND A HEAVY PHASE, AND RECOVERING THE HEAVEY PHASE
Claim 2
Dependent Claim
113 words
THE PROCESS FOR PREPARING A SOLUTION OF SYNTETIC RUBBERY POLYMER COMPRISING MIXING A LATEX OF SYNTHETIC RUBBERY POLYMER OF THE GROUP CONSITING OF HOMOPOLYMERS OF A CONJUGATED DIOLEFIN, COPOLYMERS OF A MIXTURE OF CONJUGATED DIOLEFINS, AND COPOLYMERS OF A MIXTURE OF A CONJUGATED, DIOLEFIN AND A COPOLYMERIZABLE COMPOUND HAVING A SINGLE ETHYLENIC LINKAGE IN THE MOLECULE WITH AN EXTRACTION MEDIUM CONSISTING OF CARBON TETRACHLORIDE AND METHANOL, SAID CARBON TETRACHLORIDE AND METHANOL, TOGETHER WITH THE WATER IN SAID LATEX DEFINING A TERNARY SYSTEM WITHIN THE AREA ABCD ON THE APPENDED DRAWING, ALLOWING THE MIXTURE OF LATEX AND EXTRACTION MEDIUM TO SEPARTE INTO A LIGHT PHASE AND A HEAVY PHASE, AND RECOVERING THE HEAVEY PHASE
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) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |