EP0106526B1
Expired / Lapsed
EP
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Hydrocarbon solvent-based dispersant formulation and its use in the dispersion of viscous oil spills
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1983-09-12
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Granted: 1988-03-16
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Expires: 2003-09-12
Abstract
No abstract record available.
Inventors
- 👤 Kenneth William Becker
- 👤 James Robert Jackson
- 👤 Gordon Paul Lindblom
- 👤 Marjorie Ann Walsh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 05:40
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/682; C09; C09K; C09K23/00; C09K23/017; C09K3/00; C09K3/32; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/925; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
225 words
A method for dispersing a slick of a heavy oil on water which comprises contacting said oil slick with a dispersant formulation comprising a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid, a polyoxyalkylene adduct of a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having 6 to 30 polyoxyalkylene units per mole of monoester; a salt of a dialkyl sulfosuccinate and an isoparaffinic hydrocarbon solvent characterized in that the formulation is contacted with said oil slick by aerial application and comprises from 5 to 15 weight percent of said sorbitan monoester, from 5 to 15 weight percent of said adduct of sorbitan monoester, 15 to 40 weight percent of a polyoxyalkylene adduct of a sorbitan triester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having 6 to 30 polyoxyalkylene units per mole of triester, 5 to 15 weight percent of a salt of a dialkyl sulfosuccinate having a critical micelle concentration (at 25°C) of 0.0005 to 0.005 g/100 ml, and from 15 to 40 weight percent of an isoparaffinic hydrocarbon solvent, boiling within the range of 115°C to 255°C, said weight percents based on the total weight of said composition, wherein said formulation is adjusted to a viscosity of 60 10-6 to 150 · 10 -6 m 2 s -1 measured at 16°C.
Claim 2
Independent Claim
225 words
A method for dispersing a slick of a heavy oil on water which comprises contacting said oil slick with a dispersant formulation comprising a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid, a polyoxyalkylene adduct of a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having 6 to 30 polyoxyalkylene units per mole of monoester; a salt of a dialkyl sulfosuccinate and an isoparaffinic hydrocarbon solvent characterized in that the formulation is contacted with said oil slick by aerial application and comprises from 5 to 15 weight percent of said sorbitan monoester, from 5 to 15 weight percent of said adduct of sorbitan monoester, 15 to 40 weight percent of a polyoxyalkylene adduct of a sorbitan triester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having 6 to 30 polyoxyalkylene units per mole of triester, 5 to 15 weight percent of a salt of a dialkyl sulfosuccinate having a critical micelle concentration (at 25°C) of 0.0005 to 0.005 g/100 ml, and from 15 to 40 weight percent of an isoparaffinic hydrocarbon solvent, boiling within the range of 115°C to 255°C, said weight percents based on the total weight of said composition, wherein said formulation is adjusted to a viscosity of 60 10-6 to 150 · 10 -6 m 2 s -1 measured at 16°C.
Claim 3
Dependent Claim
40 words
The method according to claim 1 wherein said sorbitan monoester is sorbitan monooleate, said adduct of a sorbitan monoester is polyethoxylated sorbitan monooleate, said adduct of a sorbitan triester is polyethoxylated sorbitan trioleate and said salt is sodium ditridecyl sulfosuccinate.
Claim 4
Dependent Claim
21 words
The method according to claim 1 or claim 2, wherein said formulation contains an effective amount of ethylene glycol monobutyl ether.
Claim 5
Dependent Claim
210 words
A dispersant formulation comprising: a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid; a polyoxyalkylene adduct of a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having from 6 to 30 polyoxyalkylene units per mole of monoester a salt of a dialkyl sulfosuccinate and an isoparaffinic hydrocarbon solvent characterized in that to be suitable for aerial application the formulation comprises 5 to 15 weight percent of the sorbitan monoester, 5 to 15 weight percent of the adduct of the sorbitan monoester, 15 to 40 weight percent of a polyoxyalkylene adduct of a sorbitan triester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having from 6 to 30 polyoxyalkylene units per mole of triester; from 5 to 15 weight percent of a salt of a dialkyl sulfosuccinate having a critical micelle concentration (at 25°C) of 0.0005 to 0.005 g/100 ml; from 15 to 40 weight percent of an isoparaffinic hydrocarbon having a boiling range of 115°C-255°C, and from 5 to 15 weight percent of a viscosity modifier such that the formulation has a viscosity of 60 - 10- 6 to 150. 10 -6 m 2 s -1 at 16°C, said weight percents based on the total weight of said composition.
Claim 6
Dependent Claim
210 words
A dispersant formulation comprising: a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid; a polyoxyalkylene adduct of a sorbitan monoester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having from 6 to 30 polyoxyalkylene units per mole of monoester a salt of a dialkyl sulfosuccinate and an isoparaffinic hydrocarbon solvent characterized in that to be suitable for aerial application the formulation comprises 5 to 15 weight percent of the sorbitan monoester, 5 to 15 weight percent of the adduct of the sorbitan monoester, 15 to 40 weight percent of a polyoxyalkylene adduct of a sorbitan triester of a C 10 ―C 20 aliphatic monocarboxylic acid, said adduct having from 6 to 30 polyoxyalkylene units per mole of triester; from 5 to 15 weight percent of a salt of a dialkyl sulfosuccinate having a critical micelle concentration (at 25°C) of 0.0005 to 0.005 g/100 ml; from 15 to 40 weight percent of an isoparaffinic hydrocarbon having a boiling range of 115°C-255°C, and from 5 to 15 weight percent of a viscosity modifier such that the formulation has a viscosity of 60 - 10- 6 to 150. 10 -6 m 2 s -1 at 16°C, said weight percents based on the total weight of said composition.
Claim 7
Dependent Claim
48 words
A dispersant formulation according to claim 4 wherein said sorbitan monoester is sorbitan monooleate, said adduct of a sorbitan monoester is polyethoxylated sorbitan monooleate, said adduct of a sorbitan triester is polyethoxylated sorbitan trioleate, and said salt of a dialkyl sulfosuccinate is the sodium salt of ditridecyl sulfosuccinate.
Claim 8
Dependent Claim
35 words
A dispersant composition according to claim 5, comprising from 5 to 10 weight percent of ethylene glycol monobutyl ether, from 1 to 3 weight percent of hexylene glycol and up to 3 weight percent water.
Claim 9
Dependent Claim
27 words
A dispersant composition according to claim 6 wherein said water ranges from 1 to 3 weight percent and said hydrocarbon ranges from 20 to 30 weight percent.
References Cited (Backward Citations)
No citation records indexed.
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