US4422966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of neutrals from tall oil soaps
Assignee: Union Camp Corp
•
Filing: 1983-03-18
•
Granted: 1983-12-27
•
Expires: 2003-03-18
Abstract
Abstract The disclosure is of a process for separating neutrals from salts of fatty/resin acids by extraction of tall oil soaps with supercritical fluid solvents.
Inventors
- 👤 Gamal I. Amer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:03
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0403; B01D11/0407; C; C11; C11B; C11B13/00; C11B13/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
59 words
A process for separating neutral compounds from tall oil soaps, which comprises; contacting tall oil soap with a supercritical fluid solvent for the tall oil neutral compounds whereby neutrals are extracted into said solvent to form a mixture of solvent and extract; separating the mixture from the remainder of the contacted soap; and separating the solvent from the mixture.
Claim 2
Dependent Claim
59 words
A process for separating neutral compounds from tall oil soaps, which comprises; contacting tall oil soap with a supercritical fluid solvent for the tall oil neutral compounds whereby neutrals are extracted into said solvent to form a mixture of solvent and extract; separating the mixture from the remainder of the contacted soap; and separating the solvent from the mixture.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein the remainder of the contacted soap is converted to the corresponding tall oil fatty/resin acids.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the solvent is a supercritical hydrocarbon fluid.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein said fluid is ethylene.
Claim 6
Dependent Claim
16 words
The process according to claim 1 wherein the fluid has a critical temperature of 0°-300° C.
Claim 7
Dependent Claim
16 words
The process according to claim 1 wherein mixtures of fluids in the supercritical state are used.
Claim 8
Dependent Claim
27 words
The process according to claim 1 wherein the process fluid is under a pressure of at least 5 psi greater than the critical pressure of the solvent.
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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |