US4334890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for gasoline blending stocks
Assignee: Halcon SD Group Inc
•
Filing: 1981-02-03
•
Granted: 1982-06-15
•
Expires: 2001-02-03
Abstract
Abstract A gasoline blending stock is produced by the simultaneous reaction of a hydrocarbon feed containing at least one tertiary olefin, at least one aliphatic alcohol, and water over a suitable catalyst. In a typical embodiment, a mixed C 4 stream containing isobutylene is reacted with aqueous ethanol to form a mixture of ethyl tertiary butyl ether and tertiary butanol, with minimal formation of secondary alcohols from any normal butenes present in the hydrocarbon feed.
Inventors
- 👤 Nand K. Kochar
- 👤 Richard L. Marcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:35
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/02; C10L1/023; C07; C07C; C07C29/00; C07C29/03; C07C29/04; C07C41/00; C07C41/01; C07C41/05; C07C41/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
A process for the preparation of a gasoline blending stock comprising a tertiary alcohol and an alkyl tertiary alkyl ether comprising: (a) reacting a liquid feed stream comprising water, at least one aliphatic alcohol, and at least one tertiary olefin in the presence of a catalyst capable of both etheration and hydration and simultaneously producing a mixture containing the corresponding tertiary alcohols and alkyl tertiary alkyl ethers; (b) separating the tertiary alcohols and alkyl tertiary alkyl ethers from the mixture produced in (a) to produce a gasoline blending stock.
Claim 2
Dependent Claim
89 words
A process for the preparation of a gasoline blending stock comprising a tertiary alcohol and an alkyl tertiary alkyl ether comprising: (a) reacting a liquid feed stream comprising water, at least one aliphatic alcohol, and at least one tertiary olefin in the presence of a catalyst capable of both etheration and hydration and simultaneously producing a mixture containing the corresponding tertiary alcohols and alkyl tertiary alkyl ethers; (b) separating the tertiary alcohols and alkyl tertiary alkyl ethers from the mixture produced in (a) to produce a gasoline blending stock.
Claim 3
Dependent Claim
43 words
The process of claim 1 wherein said liquid feed stream of (a) is obtained by contacting countercurrently a mixed hydrocarbon stream containing at least one tertiary olefin with an aqueous aliphatic alcohol stream and separating a water stream and said liquid feed stream.
Claim 4
Dependent Claim
17 words
The process of claims 1 or 2 wherein said liquid feed stream comprises aqueous ethanol and isobutylene.
Claim 5
Dependent Claim
36 words
The process of claims 1 or 2 wherein said reaction is carried out at a temperature within the range of about 30°-90° C. and at a pressure sufficient to maintain the reactants in the liquid phase.
Claim 6
Dependent Claim
30 words
The process of claim 3 wherein said reaction is carried out at a temperature within the range of 40°-60° C., and where said aqueous ethanol contains 85-95 wt % ethanol.
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) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |