US2958667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing halogenated rubbery copolymers utilizing the alkaline earth metal salt of a fatty acid as a stabilizer
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-02-27
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Granted: 1960-11-01
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Lawrence T Eby
- 👤 Delmer L Cottle
- 👤 Lemiszka Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:31
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20; C08F6/00; C08F6/06; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A PROCESS FOR THE MANUFACTURE OF HALOGENATED RUBBERY COPOLYMERS OF 85 TO 99.5 WEIGHT PERCENT OF A C4 TO C8 ISOLEFIN AND ABOUT 15 TO 0.5 WEIGHT PERCENT OF A C4 TO C14 MULTIOLEFIN, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE HALOGENATED COPOLYMER WITH AN AQUEOUS MEDIUM SO AS TO FORM AN AQ SLURRY CONTAINING ABOUT 0.01 TO 10 WEIGHT PERCENT BASED ON AQUEOUS MEDIUM OF A STABILIZER CONSISTING OF AN ALKALINE EARTH METAL SALT OF A C5 TO C30 MONOCARBOXYLIC FATTY ACID AND DRYING THE STABILIZED HALOGENATED COPOLYMER FORMED WHEREBY NOT ONLY IS THE AQUEOUS SLURRY STABILIZED AGAINST AGGLOMERATION OF HALOGENATED COPOLYMER PARTICLES BUT ALSO THE HALOGENATED COPOLYMER IS FURTHER STABILIZED AGAINST SCORCHING AND PREVULCANIZATION DURING DRYING.
Claim 2
Dependent Claim
118 words
IN A PROCESS FOR THE MANUFACTURE OF HALOGENATED RUBBERY COPOLYMERS OF 85 TO 99.5 WEIGHT PERCENT OF A C4 TO C8 ISOLEFIN AND ABOUT 15 TO 0.5 WEIGHT PERCENT OF A C4 TO C14 MULTIOLEFIN, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE HALOGENATED COPOLYMER WITH AN AQUEOUS MEDIUM SO AS TO FORM AN AQ SLURRY CONTAINING ABOUT 0.01 TO 10 WEIGHT PERCENT BASED ON AQUEOUS MEDIUM OF A STABILIZER CONSISTING OF AN ALKALINE EARTH METAL SALT OF A C5 TO C30 MONOCARBOXYLIC FATTY ACID AND DRYING THE STABILIZED HALOGENATED COPOLYMER FORMED WHEREBY NOT ONLY IS THE AQUEOUS SLURRY STABILIZED AGAINST AGGLOMERATION OF HALOGENATED COPOLYMER PARTICLES BUT ALSO THE HALOGENATED COPOLYMER IS FURTHER STABILIZED AGAINST SCORCHING AND PREVULCANIZATION DURING DRYING.
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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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |