US2603665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene in presence of aluminum chloride-methyl chloride solution
Assignee: Standard Oil Development Co
•
Filing: 1948-11-18
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Granted: 1952-07-15
•
Expires: 1968-11-18
Abstract
No abstract record available.
Inventors
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:56
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126; C07C2531/00; C07C2531/02; C07C2531/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR PRODUCING C10-C20 POLYETHYLENE POLYMERS OF PREDOMINATLY STRAIGHT CHAIN ALPHA OLEFINIC CHARACTER WHICH COMPRISES CONTACTING ETHYLENE IN THE GASEOUS PHASE WITH A SATURATED ALUMINUM CHLORIDE-ETHYL CHLORIDE SOLUTION CATALYST IN A POLYMERIZATION ZONE AT A TEMPERATURE IN THE RANGE OF 0-20* C.. AND AT ATMOSPHERIC PRESSURE; WITHDRAWING A MIXTURE OF THE RESULTING POLYETHYLENES ALONG WITH CATALYST SOLUTION FROM THE REACTION ZONE; WASHING THE MIXTURE WITH WATER TO REMOVE ALUMINUM CHLORIDE IN A WASHING ZONE; DECANTING THE WASHED MIXTURE INTO AN ORGANIC LAYER AND A WATER LAYER AND DISTILLING THE ETHYL CHLORIDE FROM THE ORGANIC LAYER TO LEAVE THE POLYETHYLENE PRODUCT AS A RESIDUAL PRODUCT.
Claim 2
Dependent Claim
105 words
A PROCESS FOR PRODUCING C10-C20 POLYETHYLENE POLYMERS OF PREDOMINATLY STRAIGHT CHAIN ALPHA OLEFINIC CHARACTER WHICH COMPRISES CONTACTING ETHYLENE IN THE GASEOUS PHASE WITH A SATURATED ALUMINUM CHLORIDE-ETHYL CHLORIDE SOLUTION CATALYST IN A POLYMERIZATION ZONE AT A TEMPERATURE IN THE RANGE OF 0-20* C.. AND AT ATMOSPHERIC PRESSURE; WITHDRAWING A MIXTURE OF THE RESULTING POLYETHYLENES ALONG WITH CATALYST SOLUTION FROM THE REACTION ZONE; WASHING THE MIXTURE WITH WATER TO REMOVE ALUMINUM CHLORIDE IN A WASHING ZONE; DECANTING THE WASHED MIXTURE INTO AN ORGANIC LAYER AND A WATER LAYER AND DISTILLING THE ETHYL CHLORIDE FROM THE ORGANIC LAYER TO LEAVE THE POLYETHYLENE PRODUCT AS A RESIDUAL PRODUCT.
References Cited (Backward Citations)
US2377266A
Cited
FR682055A
Cited
US2159148A
Cited
US2329714A
Cited
US2443210A
Cited
US2437356A
Cited
US2458977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |