US2964509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for chlorination of olefine polymers
Assignee: EIDP Inc
•
Filing: 1956-10-16
•
Granted: 1960-12-13
•
Expires: 1976-10-16
Abstract
No abstract record available.
Inventors
- 👤 David M Hurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:53
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A CONTINUOUS PROCESS FOR PRODUCING HIGHLY HOMOGENEOUS CHLORINATED COPOLYMERS OF ETHYLENE AND PROPYLENE CONTAINING FROM ABOUT 10% TO ABOUT 40% BY WEIGHT OF CHLORINE WHICH COMPRISES MIXING A SOLUTION OF A COPOLYMER OF ETHYLENE WITH 10% TO 60% OF PROPYLENE HAVING A MOLECULAR WEIGHT OF A LEAST 40,000 IN AN INERT ORGANIC SOLVENT WITH CHLORINE TO PROVIDE A MIXTURE CONTAINING BETWEEN 2% TO 20% BY WEIGHT OF THE COPOLYMER AND FROM ABOUT 22 TO ABOUT 133 PARTS BY WEIGHT OF CHLORINE TO EACH 100 PARTS BY WEIGHT OF SAID COPOLYMER, AND THEN FLOWING THE MIXTURE THROUGH A TUBULAR REACTOR UNDER CONDITIONS OF VISCOUS LAMINAR FLOW WHILE SUBJECTING THE MIXTURE TO A TEMPERATURE OF FROM ABOUT 70* C. TO ABOUT 225* C. AND A PRESSURE SUFFICIENT TO MAINTAIN ALL NORMALLY GASEOUS INGREDIENTS OF THE REACTING MIXTURE IN SOLUTION IN THE MIXTURE UNTIL SUBSTANTIALLY ALL OF THE CHLORINE HAS REACTED.
Claim 2
Dependent Claim
148 words
A CONTINUOUS PROCESS FOR PRODUCING HIGHLY HOMOGENEOUS CHLORINATED COPOLYMERS OF ETHYLENE AND PROPYLENE CONTAINING FROM ABOUT 10% TO ABOUT 40% BY WEIGHT OF CHLORINE WHICH COMPRISES MIXING A SOLUTION OF A COPOLYMER OF ETHYLENE WITH 10% TO 60% OF PROPYLENE HAVING A MOLECULAR WEIGHT OF A LEAST 40,000 IN AN INERT ORGANIC SOLVENT WITH CHLORINE TO PROVIDE A MIXTURE CONTAINING BETWEEN 2% TO 20% BY WEIGHT OF THE COPOLYMER AND FROM ABOUT 22 TO ABOUT 133 PARTS BY WEIGHT OF CHLORINE TO EACH 100 PARTS BY WEIGHT OF SAID COPOLYMER, AND THEN FLOWING THE MIXTURE THROUGH A TUBULAR REACTOR UNDER CONDITIONS OF VISCOUS LAMINAR FLOW WHILE SUBJECTING THE MIXTURE TO A TEMPERATURE OF FROM ABOUT 70* C. TO ABOUT 225* C. AND A PRESSURE SUFFICIENT TO MAINTAIN ALL NORMALLY GASEOUS INGREDIENTS OF THE REACTING MIXTURE IN SOLUTION IN THE MIXTURE UNTIL SUBSTANTIALLY ALL OF THE CHLORINE HAS REACTED.
References Cited (Backward Citations)
US2105733A
Cited
GB481515A
Cited
US2291574A
Cited
US2327705A
Cited
US2398803A
Cited
US2571901A
Cited
GB623705A
Cited
US2503252A
Cited
US2748105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |