US4495094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating fatty and rosin acids from unsaponifiables
Assignee: Honeywell UOP LLC
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Filing: 1984-04-09
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Granted: 1985-01-22
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Expires: 2004-04-09
Abstract
Abstract A process for separating a fatty and/or rosin acid from an unsaponifiable compound. A feedstream comprising the acids and unsaponifiable compound is contacted with an aqueous alcohol solvent which is selective for and absorbs the fatty and/or rosin acid. An extract stream comprising the solvent and acids, and a raffinate stream comprising the unsaponifiable compound may then be recovered. The feedstock is best used in a diluent which is preferably a hydrocarbon.
Inventors
- 👤 Michael T. Cleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:14
CPC Classifications
C; C11; C11C; C11C1/00; C11C1/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
A process for separating fatty and rosin acids from a feed mixture comprising said fatty and rosin acids and an unsaponifiable compound, said process comprising: (a) introducing said feed mixture into an extraction zone, and therein contacting said mixture with a solvent comprising an alcohol and water solution which is selective for adsorbing said fatty and rosin acids; (b) removing a raffinate stream from said extraction zone which contains a higher concentration of unsaponifiable compound than said feed mixture; and (c) removing a solvent-rich extract stream from said extraction zone containing a higher concentration of said fatty and rosin acids, on a solvent free basis, than said feed mixture.
Claim 2
Dependent Claim
109 words
A process for separating fatty and rosin acids from a feed mixture comprising said fatty and rosin acids and an unsaponifiable compound, said process comprising: (a) introducing said feed mixture into an extraction zone, and therein contacting said mixture with a solvent comprising an alcohol and water solution which is selective for adsorbing said fatty and rosin acids; (b) removing a raffinate stream from said extraction zone which contains a higher concentration of unsaponifiable compound than said feed mixture; and (c) removing a solvent-rich extract stream from said extraction zone containing a higher concentration of said fatty and rosin acids, on a solvent free basis, than said feed mixture.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein said alcohol comprises ethanol.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said feed mixture includes a hydrocarbon diluent.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said diluent comprises normal hexane or normal octane.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein said feed mixture comprises crude tall oil.
Claim 7
Dependent Claim
34 words
The process of claim 1 wherein the quantity of water in said solvent is adjusted to achieve the desired selectivity of said solvent for said fatty and rosin acids relative to said unsaponifiable compound.
Claim 8
Dependent Claim
102 words
A process for separating a rosin acid from a feed mixture comprising said rosin acid and an unsaponifiable compound, said process comprising: (a) introducing said feed mixture into an extraction zone, and therein contacting said mixture with a solvent comprising an alcohol and water solution which is selective for adsorbing said rosin acid; (b) removing a raffinate stream from said extraction zone which contains a higher concentration of unsaponifiable compound than said feed mixture; and (c) removing a solvent-rich extract stream from said extraction zone containing a higher concentration of said rosin acid on a solvent free basis, than said feed mixture.
Claim 9
Dependent Claim
102 words
A process for separating a rosin acid from a feed mixture comprising said rosin acid and an unsaponifiable compound, said process comprising: (a) introducing said feed mixture into an extraction zone, and therein contacting said mixture with a solvent comprising an alcohol and water solution which is selective for adsorbing said rosin acid; (b) removing a raffinate stream from said extraction zone which contains a higher concentration of unsaponifiable compound than said feed mixture; and (c) removing a solvent-rich extract stream from said extraction zone containing a higher concentration of said rosin acid on a solvent free basis, than said feed mixture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |