US2965620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for halogenating copolymers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-03-07
•
Granted: 1960-12-20
•
Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 George E Serniuk
- 👤 Delmer L Cottle
- 👤 Lemiszka Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:56
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR HALOGENATING AN ISOOLEFIN-MULTIOLEFIN BUTYL RUBBER COPOLYMER OF A MAJOR PORTION OF A C4 TO C8 ISOOLEFIN AND A MINOR PORTION OF A C4 TO C14 MULTIOLEFIN WHICH COMPRISES DISSOLVING ABOUT 100 PARTS BY WEIGHT OF SAID COPOLYMER IN A SOLVENT, ADMIXING THEREWITH ABOUT 0.1 TO 50 PARTS BY WEIGHT BASED ON COPOLYMER OF WATER SO AS TO FORM A SUSPENSION OF DISSOLVED BUTYL RUBBER COPOLYMER PARTICLES IN WATER, AND HALOGENATING, AT A TEMPERATURE LEVEL OF ABOUT 0*C. TO ABOUT +150*C. THE BUTYL RUBBER COPOLYMER PARTICLES WHILE THUS SUSPENDED IN WATER UNTIL THE HALOGENATED COPOLYMER FORMED CONTAINS AT LEAST ABOUT 0.5 WEIGHT PERCENT COMBINED HALOGEN BUT NOT MORE THAN ABOUT 1 COMBINED ATOM OF HALOGEN PER DOUBLE BOND IN THE COPOLYMER.
Claim 2
Dependent Claim
123 words
A PROCESS FOR HALOGENATING AN ISOOLEFIN-MULTIOLEFIN BUTYL RUBBER COPOLYMER OF A MAJOR PORTION OF A C4 TO C8 ISOOLEFIN AND A MINOR PORTION OF A C4 TO C14 MULTIOLEFIN WHICH COMPRISES DISSOLVING ABOUT 100 PARTS BY WEIGHT OF SAID COPOLYMER IN A SOLVENT, ADMIXING THEREWITH ABOUT 0.1 TO 50 PARTS BY WEIGHT BASED ON COPOLYMER OF WATER SO AS TO FORM A SUSPENSION OF DISSOLVED BUTYL RUBBER COPOLYMER PARTICLES IN WATER, AND HALOGENATING, AT A TEMPERATURE LEVEL OF ABOUT 0*C. TO ABOUT +150*C. THE BUTYL RUBBER COPOLYMER PARTICLES WHILE THUS SUSPENDED IN WATER UNTIL THE HALOGENATED COPOLYMER FORMED CONTAINS AT LEAST ABOUT 0.5 WEIGHT PERCENT COMBINED HALOGEN BUT NOT MORE THAN ABOUT 1 COMBINED ATOM OF HALOGEN PER DOUBLE BOND IN THE COPOLYMER.
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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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |