US3985822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of poly-n-butenes
Assignee: Cosden Technology Inc
•
Filing: 1976-03-05
•
Granted: 1976-10-12
•
Expires: 1996-03-05
Abstract
Abstract A process for the production of poly-n-butenes having a reduced content of isobutylene from isobutylene-containing C4 feed stocks in a molecular weight range between 1,300 and 350 under controlled polymerization conditions, at a temperature range of 65 DEG -115 DEG F and in the presence of promoted aluminum chloride in quantity of 0.02 to 0.1% by weight based on total hydrocarbon feed, and the poly-n-butene products so produced.
Inventors
- 👤 James M. Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:25
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2/22; C08; C08F; C08F240/00; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/10; C07C2527/11; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
The method of forming liquid polybutene polymer having a molecular weight in the range of 335 to 1,300 and having an increased poly-n-butene content, said method comprising polymerizing a C 3 - C 5 liquified feed gas containing at least 3% of butylenes comprised of 10 to 70% isobutylenes and 10 to 30% n-butenes, at a temperature in the range of 65° to 115° F in the presence of from about 0.035 to 0.1% by weight of said hydrocarbon of dry aluminum chloride particles promoted with a minor quantity of a promoter.
Claim 2
Independent Claim
92 words
The method of forming liquid polybutene polymer having a molecular weight in the range of 335 to 1,300 and having an increased poly-n-butene content, said method comprising polymerizing a C 3 - C 5 liquified feed gas containing at least 3% of butylenes comprised of 10 to 70% isobutylenes and 10 to 30% n-butenes, at a temperature in the range of 65° to 115° F in the presence of from about 0.035 to 0.1% by weight of said hydrocarbon of dry aluminum chloride particles promoted with a minor quantity of a promoter.
Claim 3
Dependent Claim
48 words
The method as defined in claim 1 wherein the reaction temperature is controlled within the range of 65° - 75° F and the quantity of catalyst is from about 0.035 to 0.062% based on said hydrocarbon promoted with a minor quantity based on said catalyst of hydrochloric acid.
Claim 4
Dependent Claim
48 words
The method as defined in claim 1 wherein the reaction temperature is controlled within the range of 70° - 85° F and the quantity of catalyst is from about 0.046 to 0.083% based on said hydrocarbon promoted with a minor quantity based on said catalyst of hydrochloric acid.
Claim 5
Dependent Claim
48 words
The method as defined in claim 1 wherein the reaction temperature is controlled within the range of 85° - 100° F and the quantity of catalyst is from about 0.050 to 0.089% based on said hydrocarbon promoted with a minor quantity based on said catalyst of hydrochloric acid.
Claim 6
Dependent Claim
48 words
The method as defined in claim 1 wherein the reaction temperature is controlled within the range of 100° - 115° F and the quantity of catalyst is from about 0.057 to 0.10% based on said hydrocarbon promoted with a minor quantity based on said catalyst of hydrochloric acid.
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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |