US4516981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Residual oil sludge dispersant
Assignee: Polar Molecular Corp
•
Filing: 1984-01-09
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Granted: 1985-05-14
•
Expires: 2004-01-09
Abstract
Abstract A non-ionic composition for dispersing sludge and causing rapid separation of water for easy removal, in residual oils is formed from a blend of N-hexanol, diethylene glycol methyl ether and isooctyl phenyl polyethoxy ethanol. The dispersant, when used in 1:1,000-4,000 parts of dispersant to parts of oil, causes dispersion of the sludge and eliminates the need for physically removing the sludge.
Inventors
- 👤 Otis L. Nelson, Jr.
- 👤 Mark L. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:54
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; C09; C09K; C09K23/00; C09K23/017; C09K23/018; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
62 words
A residual oil sludge dispersant comprising a low molecular weight alkyl alcohol; a glycol ether; and a polyethoxylated compound, said alcohol being present in an amount of 20-30 percent by weight, said glycol ether comprising a glycol alkyl ether present in an amount of 10-20 percent by weight, and said ethoxylated compound being present in an amount of 50-75 percent by weight.
Claim 2
Dependent Claim
62 words
A residual oil sludge dispersant comprising a low molecular weight alkyl alcohol; a glycol ether; and a polyethoxylated compound, said alcohol being present in an amount of 20-30 percent by weight, said glycol ether comprising a glycol alkyl ether present in an amount of 10-20 percent by weight, and said ethoxylated compound being present in an amount of 50-75 percent by weight.
Claim 3
Dependent Claim
10 words
The dispersant of claim 1, wherein the alcohol is hexanol.
Claim 4
Dependent Claim
10 words
The dispersant of claim 2, wherein the alcohol is n-hexanol.
Claim 5
Dependent Claim
14 words
The dispersant of claim 1, wherein the glycol ether is a glycol alkyl ether.
Claim 6
Dependent Claim
15 words
The dispersant of claim 4, wherein the glycol alkyl ether is diethylene glycol methyl ether.
Claim 7
Dependent Claim
14 words
The dispersant of claim 1, wherein the polyethoxylated compound is isooctyl phenyl polyethoxy ethanol.
Claim 8
Dependent Claim
28 words
The dispersant of claim 1, wherein the dispersant is added to a residual oil in an amount of from 1 part of dispersant to 1,000-4,000 parts of oil.
Claim 9
Dependent Claim
14 words
The dispersant of claim 1, said polyethoxylated compound being an alkyl aryl polyethoxylated compound.
Claim 10
Dependent Claim
23 words
A residual oil sludge dispersant comprising: ______________________________________
Weight %
______________________________________
hexanol 25
diethylene glycol methyl ether
15
isooctyl phenyl polyethoxy ethanol
60
______________________________________
Claim 11
Dependent Claim
23 words
A residual oil sludge dispersant comprising: ______________________________________
Weight %
______________________________________
hexanol 25
diethylene glycol methyl ether
15
isooctyl phenyl polyethoxy ethanol
60
______________________________________
Claim 12
Dependent Claim
61 words
In combination; a residual oil having sludge and water; and a dispersant 1 part of dispersant to 1,000-4,000 parts of oil consisting essentially of a low molecular weight alcohol 20-30 percent by weight, a glycol ether 10-20 percent by weight, and a polyethoxylated compound 50-70 percent by weight, wherein the dispersant disperses sludge and precipitates out water from the residual oil.
Claim 13
Dependent Claim
61 words
In combination; a residual oil having sludge and water; and a dispersant 1 part of dispersant to 1,000-4,000 parts of oil consisting essentially of a low molecular weight alcohol 20-30 percent by weight, a glycol ether 10-20 percent by weight, and a polyethoxylated compound 50-70 percent by weight, wherein the dispersant disperses sludge and precipitates out water from the residual oil.
Claim 14
Dependent Claim
25 words
The combination of claim 10, said alcohol comprising hexanol; said glycol ether comprising diethylene glycol methyl ether, said polyethoxylated compound comprising isooctyl phenyl polyethoxy ethanol.
Claim 15
Dependent Claim
26 words
A method of removing water from residual oil, which comprises adding to such residual oil the additive according to claim 1 and removing water precipitated therefrom.
Claim 16
Dependent Claim
31 words
The method according to claim 12, wherein said additive is added in an effective amount of from 1 part of said additive per 1,000 to 4,000 parts of said residual oil.
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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |