US2013023457A1PendingUtilityA1
Low interfacial tension surfactants for petroleum applications
Est. expiryJun 9, 2028(~1.9 yrs left)· nominal 20-yr term from priority
Inventors:Kristoffer K. StokesMichael C. BergDavid S. SoaneKevin T. PetersenJohn H. DiseAtul C. Thakrar
C02F 1/682C10G 2300/80C11D 1/04C11D 1/08C09K 8/584C07C 43/2055C07C 69/34C09K 3/32C10G 1/047C10G 1/04C11D 1/72
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Claims
Abstract
The invention relates to a class of novel surfactants that have utility in the recovery and/or extraction of oil.
Claims
exact text as granted — not AI-modified1 . A compound having the formula:
wherein Ar is a substituted or unsubstituted aryl, arylalkyl or heteroaryl group;
p is 1 or 2;
m and n are independently 0, 1, 2, 3, 4, or 5;
each G 1 and G 2 are independently absent, O, S, NR 2 , (CO)O, O(CO), CO, CONR 2 , or NR 2 CO;
each R 2 is independently H or a lower alkyl;
each G 3 is absent, (CH 2 ) q or G 1 ;
q is 1, 2, 3, 4 or 5;
R is a hydrophilic group;
R 1 is a saturated or unsaturated hydrophobic aliphatic group;
wherein when p is 1, Ar is substituted by OH, SH or NH 2 ; and
wherein when at least one G 2 is absent, G 1 is other than O.
2 . The compound of claim 1 wherein Ar is a substituted or unsubstituted phenyl group.
3 . The compound of claim 2 wherein p is 2.
4 . The compound of claim 3 wherein each R is independently a COOH or a hydrophilic polymer.
5 . The compound of claim 4 wherein each R is independently a polyethylene glycol or a polypropyleneoxide.
6 . The compound of claim 4 wherein each R 1 is independently C 5 to C 18 alkyl, alkenyl or alkadienyl.
7 . The compound of claim 6 wherein each R 1 is a straight chain C 5 to C 18 alkyl.
8 . The compound of claim 7 wherein each G 1 is independently O or OCO.
9 . The compound of claim 8 wherein each G 2 is independently O or OCO.
10 . The compound of claim 9 wherein each G 1 and G 2 are O.
11 . The compound of claim 10 wherein each R is independently a polyethylene glycol.
12 . The compound having the formula:
wherein R 5 is a hydrophilic group; and
R 4 is a saturated or unsaturated hydrophobic aliphatic group.
13 . A compound of claim 1 , having the formula:
wherein G 1 is S, NR 2 , (CO)O, O(CO), CO, CONR 2 , and NR 2 CO;
each R 2 is independently H or a lower alkyl;
R 1 is a saturated or unsaturated hydrophobic aliphatic group;
R 21 , R 22 , R 23 , R 24 , and R 25 are each independently H, OH, halogen, C1-C5 alkyl, C1-C5 alkoxy, a C 3 -C 7 -cycloalkyl group, a phenyl group optionally substituted by hydroxyl, halogen, lower alkyl or lower alkoxy; or Fragment I having the formula below:
wherein at least one of R 21 , R 22 , R 23 , R 24 , and R 25 is selected from Fragment I or OH;
or a salt thereof.
14 . The compound of claim 13 wherein one of R 21 , R 22 , R 23 , R 24 , and R 25 is Fragment I.
15 . The compound of claim 13 wherein m is 1.
16 . The compound of claim 13 wherein each R 1 is independently a C 5 to C 18 alkyl, alkenyl or alkadienyl.
17 . The compound of claim 13 wherein each R 1 is independently a straight chain C 5 to C 18 alkyl.
18 . The compound of claim 13 wherein G 1 is OCO.
19 . A compound claim 1 having the formula:
wherein m and R 1 are as defined above.
20 . A method for extracting oil from an oil mixture comprising:
(a) adding a compound of claim 1 to an oil mixture, and (b) collecting the oil.
21 . The method of claim 20 wherein the oil mixture comprises oil sands, wherein said method further comprises adding water to the mixture.
22 . The method of claim 20 wherein the oil mixture is a waterborne oil slick.
23 . The method of claim 20 wherein the oil mixture formed by step (a) is transported via a pipeline.
24 . The method of claim 20 wherein step (a) occurs in an oil well to enhance oil recovery.
25 . A method of degreasing machinery used in oil or bitumen production comprising cleaning the machinery with a composition comprising a compound of claim 1 .
26 . A method of removing water and associated salts from oil, comprising:
(a) contacting the oil with a compound of claim 1 , and (b) separating the water from the oil.Join the waitlist — get patent alerts
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