US3414637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing propylene/ethylene block copolymers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1963-12-19
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Granted: 1968-12-03
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Alva M Jones
- 👤 Jr Jerome A Planchard
- 👤 Raymond A Speed
- 👤 Billy E Claybaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/06; C08F297/08; C08F297/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A METHOD OF OBTAINING A SHARP BLOCK COPOLYMER PRODUCT HAVING AN INFRARED 720 CM.$1/730 CM.$1 ABSORBANCE RATIO FROM 1.3 TO 1.7 WHICH COMPRISES PASSING THROUGH A REACTION ZONE HAVING AN L/D RATIO FROM 50 TO 500, WITHOUT SUBSTANTIAL BACKMIXING, A CONTINUOUS CHARGE STREAM CONSISTING OF SEPARATELY INTRODUCED STREAMS OF: (A) A MIXTURE OF: 100 PARTS BY WEIGHT OF A DILUENT HYDROCARBON, FROM 3.5 TO 47.5 PARTS BY WEIGHT OF A POLYMER CONSISTING OF FROM 5 TO 20 WEIGHT PERCENT LIVING POLYPROPYLENE CHAINS AND CORRESPONDINGLY FROM 95 TO 80 WEIGHT PERCENT POLYPROPYLENE HOMOPOLYMER, AND FROM 0.25 TO 10.0 PARTS BY WEIGHT OF UNREACTED PROPYLENE, IN CONTACT WITH FROM 0.01 TO 0.30 PART BY WEIGHT OF A CATALYST CONSISTING OF TICL3$1/3 ALCL3 MODIFIED WITH FROM 0.5 TO 7.0 MOLS OF TRIETHYL ALUMINUM OR DIETHYL ALUMINUM CHLORIDE PER MOL OF TICL3$1/3ALCL3, AND (B) SUFFICIENT ETHYLENE TO OBTAIN UPON REACTION A COPOLYMER PRODUCT CONTAINING FROM 6 TO 10 WEIGHT PERCENT REACTED ETHYLENE, UNDER CONDITIONS INCLUDING: AN ETHYLENE CHARGE RATE FROM 0.5 TO 7.5 POUNDS PER HUNDRED POUNDS OF DILUENT, A TEMPERATURE FROM 120* TO 175*F., A PRESSURE FROM 20 TO 150 P.S.I.G., AND A RESIDENCE TIME FROM 0.25 TO 120 MINUTES.
Claim 2
Independent Claim
197 words
A METHOD OF OBTAINING A SHARP BLOCK COPOLYMER PRODUCT HAVING AN INFRARED 720 CM.$1/730 CM.$1 ABSORBANCE RATIO FROM 1.3 TO 1.7 WHICH COMPRISES PASSING THROUGH A REACTION ZONE HAVING AN L/D RATIO FROM 50 TO 500, WITHOUT SUBSTANTIAL BACKMIXING, A CONTINUOUS CHARGE STREAM CONSISTING OF SEPARATELY INTRODUCED STREAMS OF: (A) A MIXTURE OF: 100 PARTS BY WEIGHT OF A DILUENT HYDROCARBON, FROM 3.5 TO 47.5 PARTS BY WEIGHT OF A POLYMER CONSISTING OF FROM 5 TO 20 WEIGHT PERCENT LIVING POLYPROPYLENE CHAINS AND CORRESPONDINGLY FROM 95 TO 80 WEIGHT PERCENT POLYPROPYLENE HOMOPOLYMER, AND FROM 0.25 TO 10.0 PARTS BY WEIGHT OF UNREACTED PROPYLENE, IN CONTACT WITH FROM 0.01 TO 0.30 PART BY WEIGHT OF A CATALYST CONSISTING OF TICL3$1/3 ALCL3 MODIFIED WITH FROM 0.5 TO 7.0 MOLS OF TRIETHYL ALUMINUM OR DIETHYL ALUMINUM CHLORIDE PER MOL OF TICL3$1/3ALCL3, AND (B) SUFFICIENT ETHYLENE TO OBTAIN UPON REACTION A COPOLYMER PRODUCT CONTAINING FROM 6 TO 10 WEIGHT PERCENT REACTED ETHYLENE, UNDER CONDITIONS INCLUDING: AN ETHYLENE CHARGE RATE FROM 0.5 TO 7.5 POUNDS PER HUNDRED POUNDS OF DILUENT, A TEMPERATURE FROM 120* TO 175*F., A PRESSURE FROM 20 TO 150 P.S.I.G., AND A RESIDENCE TIME FROM 0.25 TO 120 MINUTES.
References Cited (Backward Citations)
US3200173A
Cited
US3247176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |