US3294766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Polysar Ltd
•
Filing: 1963-04-10
•
Granted: 1966-12-27
•
Expires: 1983-04-10
Abstract
No abstract record available.
Inventors
- 👤 John F Henderson
- 👤 Carnell David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:36
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C08F210/18; Y; Y10; Y10S; Y10S526/00; Y10S526/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE CONTINUOUS PROCESS OF COPOLYMERIZING ETHYLENE AND A LINEAR 1-OLEFIN HAVING THE FORMULA CH2-CHR WHEREIN R IS A SATURATED ALKYL HYDROCARBON RADICAL HAVING FROM 1 TO 10 CARBON ATOMS TO PRODUCE AN AMORPHOUS HOMOGENEOUS COPOLYMER HAVING A SPECIFIC COMONOMER COMPOSITION WITHIN THE RANGE BETWEEN 30 TO 80 MOLE PERCENT OF ETHYLENE, WHICH PROCESS COMPRISES (A) CONTINUOUSLY FEEDINGG TO A REACTION ZONE CONTAINING A RAPIDLY AGITATED LIQUID REACTION MIXTURE HAVING TURBULENT RANDOMLY DIRECTED FLOW, A FEED COMPRISING A NON-REACTIVE ORGANIC LIQUID, ETHYLENE, SAID 1-OLEFIN AND A HYDROCARBON SOLUBLE CATALYST, THE MOLE RATIO OF ETHYLENE TO SAID 1OLEFIN IN SAID FEED STREAM BEING CONSTANT AND IN THE RANGE BETWEEN 3/1 AND 1/50, SAID CATALYST BEING FORMED BY MIXING A COMPOUND OF VANADIUM WITH AN ORGANO-ALUMI-
Claim 2
Dependent Claim
123 words
THE CONTINUOUS PROCESS OF COPOLYMERIZING ETHYLENE AND A LINEAR 1-OLEFIN HAVING THE FORMULA CH2-CHR WHEREIN R IS A SATURATED ALKYL HYDROCARBON RADICAL HAVING FROM 1 TO 10 CARBON ATOMS TO PRODUCE AN AMORPHOUS HOMOGENEOUS COPOLYMER HAVING A SPECIFIC COMONOMER COMPOSITION WITHIN THE RANGE BETWEEN 30 TO 80 MOLE PERCENT OF ETHYLENE, WHICH PROCESS COMPRISES (A) CONTINUOUSLY FEEDINGG TO A REACTION ZONE CONTAINING A RAPIDLY AGITATED LIQUID REACTION MIXTURE HAVING TURBULENT RANDOMLY DIRECTED FLOW, A FEED COMPRISING A NON-REACTIVE ORGANIC LIQUID, ETHYLENE, SAID 1-OLEFIN AND A HYDROCARBON SOLUBLE CATALYST, THE MOLE RATIO OF ETHYLENE TO SAID 1OLEFIN IN SAID FEED STREAM BEING CONSTANT AND IN THE RANGE BETWEEN 3/1 AND 1/50, SAID CATALYST BEING FORMED BY MIXING A COMPOUND OF VANADIUM WITH AN ORGANO-ALUMI-
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |