US2013196888A1PendingUtilityA1
Engine lubricant
Est. expiryAug 27, 2030(~4.1 yrs left)· nominal 20-yr term from priority
Inventors:Nguyen Truong-Dinh
C10M 169/044C10N 2030/54C10M 2219/068C10M 2205/173C10M 161/00C10M 2227/066C10M 2205/04C10M 2205/06C10N 2040/253C10M 2215/042C10M 2215/086C10M 2205/02C10M 2223/045C10M 2215/04C10M 2215/08C10N 2040/255C10M 2223/065C10M 2209/084C10M 2203/1025C10M 105/02C10M 105/08C10M 105/14C10M 141/06C10M 101/00C10M 105/10C10M 103/04C10M 105/04C10M 103/02C10M 169/04C10M 105/06
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Claims
Abstract
A lubricant composition includes: (a) one or more base oils, (b) at least one comb polymer formed by a polyalkyl(meth)acrylate main chain, and hydrocarbon side chains including at least 50 carbon atoms, (c) at least one nitrogen-containing organic friction modifier chosen from the optionally alkoxylated fatty amines, fatty amides or imides obtained by the condensation of fatty amines and carboxylic acids, alone or in a mixture, (d) optionally, one or more organometallic organomolybdenum-type friction modifiers. This is used for the lubrication of 4-stroke gasoline or diesel engines of light vehicles, preferentially of hybrid vehicles.
Claims
exact text as granted — not AI-modified1 . A lubricant composition comprising:
(a) one or more base oils; (b) at least one comb polymer formed by a polyalkyl(meth)acrylate main chain, and hydrocarbon side chains comprising at least 50 carbon atoms; and (c) at least one nitrogen-containing organic friction modifier chosen from fatty amines, alkoxylated fatty amines, fatty amides or imides obtained by the condensation of fatty amines and carboxylic acids, alone or in a mixture.
2 . The lubricant composition according to claim 1 where the hydrocarbon side chains of the comb polymers (b) are obtained by the polymerization or copolymerization of olefins.
3 . The lubricant composition according to claim 1 where the comb polymers (b) are obtained by the copolymerization of macromonomers of formula (II)
with acrylic or methacrylic monomers of formula (III):
where:
each R′ is independently hydrogen or a methyl,
R1 is an alkyl or aryl radical comprising from 1 to 6 carbon atoms,
R2 is an alkyl radical comprising from 1 to 26 carbon atoms,
A is formed by the 1,4 addition of butadiene, optionally substituted by alkyl groups comprising 1 to 6 carbon atoms, or by the vinyl addition of styrene, optionally substituted by alkyl groups comprising 1 to 6 carbon atoms, and
A′ is formed by the 1,2 addition of butadiene optionally substituted by alkyl groups comprising 1 to 6 carbon atoms, or by the vinyl addition of styrene, optionally substituted by alkyl groups comprising 1 to 6 carbon atoms,
n and m are integers greater than or equal to zero, and n+m is an integer between 7 and 3000.
4 . The lubricant composition according to claim 1 where the comb polymers (b) are obtained by the copolymerization of macromonomers of formula (IV):
with acrylic or methacrylic monomers of formula (III):
where:
each R′ is independently hydrogen or a methyl,
R1 is an alkyl or aryl radical comprising from 1 to 6 carbon atoms,
R2 is an alkyl radical comprising from 1 to 26 carbon atoms,
X1, X2, X3 are independently either hydrogen, or alkyl groups comprising from 1 to 18 carbon atoms, and
p, q, r are integers greater than or equal to zero, and p+q+r is an integer between 7 and 3000.
5 . The lubricant composition according to claim 1 where at least one nitrogen-containing organic friction modifier (c) is chosen from the fatty amines of formula (V):
where R3, R4, R5 are independently either hydrogen or aliphatic chains comprising from 1 to 150 carbon atoms, and at least one of the R3, R4, or R5 chains is a fatty aliphatic chain comprising at least 7 carbon atoms, and
n is an integer greater than or equal to 1.
6 . The lubricant composition according to claim 1 where at least one nitrogen-containing organic friction modifier (c) is chosen from the alkoxylated amines corresponding to formulae (VI) or (VII) below:
where R6 and R10 are, independently, fatty aliphatic chains, comprising between 7 and 150,
R7 and R8 are, independently, hydrocarbon radicals comprising from 2 to 6 carbon atoms,
R9 is a hydrocarbon radical comprising from 1 to 6 carbon atoms, and
x, y, p, q and z are integers between 0 and 50, complying with: 0<x+y<(or equal to) 50 and 0<p+q+z<(or equal to) 50.
7 . The lubricant composition according to claim 6 where at least one nitrogen-containing organic friction modifier (c) is chosen from the diethanolamines of formula (VIII):
where R11 is a fatty aliphatic chain comprising from 7 to 150 carbon atoms.
8 . The lubricant composition according to claim 1 where at least one nitrogen-containing organic friction modifier (c) is chosen from the fatty amides or imides obtained by the condensation of a dicarboxylic acid of formula (IX)
where R12 and R13 are independently hydrogen or a hydrocarbon group, or the R12 and R13 hydrocarbon groups form a ring,
with an amine of formula (X) R14R15NH, and
where R14 and R15 represent independently hydrogen or an aliphatic chain comprising between 1 and 150 carbon atoms and at least one of the R1 or R2 chains is a fatty aliphatic chain comprising at least 7 carbon atoms.
9 . The lubricant composition according to claim 1 comprising at least one nitrogen-containing organic friction modifier (c) and at least one organometallic friction modifier (d).
10 . The lubricant composition according to claim 9 where the organometallic friction modifiers (d) are chosen from molybdenum dithiocarbamates, dithiophosphates, dithiophosphinates, xanthates, thioxanthates.
11 . The lubricant composition according to claim 10 where the organometallic friction modifier (d) is a molybdenum dithiocarbamate of formula (XI):
where R16, R17, R18, R19 are alkyl chains comprising from 8 to 13 carbon atoms.
12 . The lubricant composition according to claim 8 comprising:
from 65 to 90% by weight one or more base oils (a);
from 2 to 15% by weight polymer (b); and
from 0.01 to 2% by weight friction modifiers (c).
13 . The lubricant composition according to claim 1 comprising at least one isoparaffinic mineral base oil (a) obtained by hydro-isomerization of an n-paraffin feedstock originating from solvent dewaxing or catalytic dewaxing, or at least one isoparaffinic synthetic base oil (a) obtained by hydro-isomerization of an n-paraffin feedstock constituted by a Fischer Tropsch wax.
14 . The lubricant composition according to claim 1 which is of grade 0W20 or 0W30 according to the SAE J300 classification.
15 . A method of lubricating a 4-stroke gasoline or diesel engines of light with a lubricant composition comprising:
(a) one or more base oils; (b) at least one comb polymer formed by a polyalkyl(meth)acrylate main chain, and hydrocarbon side chains comprising at least 50 carbon atoms; and (c) at least one nitrogen-containing organic friction modifier chosen from fatty amines, alkoxylated fatty amines, fatty amides or imides obtained by the condensation of fatty amines and carboxylic acids, alone or in a mixture, (d) one or more organometallic organomolybdenum-type friction modifiers vehicles.
16 . The method according to claim 15 wherein the diesel engine is lubricated with the lubricant composition.
17 . The lubricant composition according to claim 5 wherein the nitrogen-containing organic friction modifier (c) is chosen from the fatty amines of formula (V):
where R3, R4, R5 are independently either hydrogen or aliphatic chains comprising from 1 to 32 carbon atoms and at least one of the R3, R4, or R5 chains is a fatty aliphatic chain comprising at least 7 carbon atoms, and
n is an integer greater than or equal to 1.
18 . The lubricant composition according to claim 6 wherein the nitrogen-containing organic friction modifier (c) is chosen from the alkoxylated amines corresponding to formulae (VI) or (VII) below:
where R6 and R10 are, independently, fatty aliphatic chains, comprising between 7 and 32,
R7 and R8 are, independently, hydrocarbon radicals comprising from 2 to 6 carbon atoms,
R9 is a hydrocarbon radical comprising from 1 to 6 carbon atoms, and
x, y, p, q and z are integers between 0 and 50, complying with: 0<x+y<(or equal to) 50 and 0<p+q+z<(or equal to) 50.
19 . The lubricant composition according to claim 7 where at least one nitrogen-containing organic friction modifier (c) is chosen from the diethanolamines of formula (VIII):
where R11 is a fatty aliphatic chain comprising from 7 to 32 carbon atoms.
20 . The lubricant composition according to claim 2 wherein the olefins are selected from the group consisting of the styrenes comprising from 8 to 17 carbon atoms, the substituted styrenes comprising from 8 to 17 carbon atoms, 1,4 or 1,2 addition butadiene, or the monomers of formula (I):
wherein X1 and X2 are independently either hydrogen, or alkyl groups comprising from 1 to 18 carbon atoms.Join the waitlist — get patent alerts
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