US2006052253A1PendingUtilityA1
Lubricant including polyether-or polyester modified polydialkylsiloxane
Individually held — no corporate assignee on recordPriority: Sep 3, 2004Filed: Sep 3, 2004Published: Mar 9, 2006
Est. expirySep 3, 2024(expired)· nominal 20-yr term from priority
Inventors:John Murray
C10L 10/02C10L 1/285C10M 2229/047C10N 2040/25C10N 2030/10C10L 10/08C10N 2030/00C10N 2030/50C10M 155/02C10M 2229/048C10N 2020/06C10N 2040/26
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Claims
Abstract
Polyether- or polyester-modified polydimethylsiloxane is mixed with a lubricant, such as motor oil. Preferably, the polydialkylsiloxane can form at least about 0.5 percent by volume of the mixture. And the mixture can be used in a fluid-conduit system (e.g., a lubrication system) of a motor or a vehicle (e.g., an automobile), wherein the mixture offers excellent filming properties on, e.g., engine parts and helps to improve engine efficiency, to lengthen the service life of the lubricant, and to reduce harmful emissions from the vehicle.
Claims
exact text as granted — not AI-modified1 . A method for lubricating a vehicle comprising:
adding polyether- or polyester-modified polydialkylsiloxane particles to a fluid-conduit system in an engine-operated vehicle, wherein the polydialkylsiloxane particles form a mixture with oil in the fluid-conduit system; and operating the engine of the vehicle, wherein the mixture of polydialkylsiloxane particles and oil coats automobile parts accessed by the fluid-conduit system.
2 . The method of claim 1 wherein the polyether- or polyester-modified polydialkylsiloxane is represented by the general formula (1)
wherein
Z is independently selected from O,
R 1 and R 1′ are independently selected from C 1 -C 6 alkyl and -Z-(C 1 -C 6 alkyl)
R 2 and R 2′ are independently selected from C 1 -C 6 alkyl;
R 3 is —(C(R 6 )(R 7 ))—;
R 4 is —(C(R 5 )(R 9 )) v —;
R 5 is selected from hydrogen, —O—(C 1 -C 6 -alkyl) and C 1 -C 6 alkyl;
R 6 , R 7 , R 8 and R 9 are independently selected from hydrogen and C 1 -C 6 alkyl;
n is an integer from 1 to 10;
m is an integer from 0 to 5;
v is an integer from 1 to 4;
x is an integer from 1 to 150; and
y is an integer from 1 to 500.
3 . The method of claim 2 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
4 . The method of claim 2 , wherein R 1 , R 1′ , R 2 and R 2 are methyl.
5 . The method of claim 1 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
6 . The method of claim 5 wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
7 . The method of claim 5 , wherein the size of the polydialkylsiloxane particles is reduced and the particles are filtered such that substantially all of the polydialkylsiloxane particles have an average diameter of less than 2 microns.
8 . The method of claim 1 , wherein the polydialkylsiloxane is at least about 0.5 percent by volume of the polydialkylsiloxane-and-oil mixture in the fluid-conduit system.
9 . The method of claim 1 , wherein the polydialkylsiloxane is at least about 1 percent by volume of the polydialkylsiloxane-and-oil mixture in the fluid-conduit system.
10 . The method of claim 1 , wherein the fluid-conduit system is an engine lubrication system.
11 . The method of claim 1 , wherein the oil is a motor oil.
12 . The method of claim 11 , wherein the motor oil is a petroleum-based motor oil.
13 . The method of claim 11 , wherein the motor oil is a synthetic motor oil.
14 . The method of claim 1 , wherein the fluid-conduit system is a power-steering lubrication system.
15 . The method of claim 1 , wherein the fluid-conduit system is a fuel system.
16 . The method of claim 15 , wherein the the fuel system belongs to a 2-stroke engine and the polyether- or polyester-modified polydialkylsiloxane is either premixed with the fuel or injected directly into the combustion chamber of the engine.
17 . The method of claim 1 , wherein the polyether- or polyester-modified polydialkylsiloxane is added to the fluid-conduit system as a mixture of the polyether- or polyester modified polydialkylsiloxane and oil.
18 . The method of claim 17 , wherein the polyether- or polyester-modified polydialkylsiloxane is dispersed substantially uniformly in the oil when added to the fluid-conduit system.
19 . A method for forming a mixture comprising mixing together a polyether- or polyester-modified polydialkylsiloxane and a liquid lubricant to produce a mixture wherein the polyether- or polyester-modified polydialkylsiloxane forms at least 0.5% of the mixture.
20 . The method of claim 19 wherein the polyether- or polyester-modified polydialkylsiloxane is represented by the general formula (1)
wherein
Z is independently selected from O,
R 1 and R 1′ are independently selected from C 1 -C 6 alkyl and -Z-(C 1 -C 6 alkyl)
R 2 and R 2′ are independently selected from C 1 -C 6 alkyl;
R 3 is —(C(R 6 )(R 7 ))—;
R 4 is —C(R 8 )(R 9 )) n —;
R 5 is selected from hydrogen, —O—(C 1 -C 6 -alkyl) and C 1 -C 6 alkyl;
R 6 , R 7 , R 8 and R 9 are independently selected from hydrogen and C 1 -C 6 alkyl;
n is an integer from 1 to 10;
m is an integer from 0 to 5;
v is an integer from 1 to 4;
x is an integer from 1 to 150; and
y is an integer from 1 to 500.
21 . The method of claim 20 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
22 . The method of claim 20 , wherein R 1 , R 1′ , R 2 and R 2 are methyl.
23 . The method of claim 19 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
24 . The method of claim 23 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
25 . The method of claim 23 , wherein the polydialkylsiloxane is in the form of particles, the method further comprising reducing the particle size of the polydialkylsiloxane particles and filtering the particles so that substantially all of the polydialkylsiloxane particles in the mixture have an average diameter of less than 2 microns after mixing.
26 . The method of claim 19 , wherein the lubricant is motor oil.
27 . The method of claim 26 , wherein the motor oil is a petroleum-based motor oil.
28 . The method of claim 26 , wherein the motor oil is a synthetic motor oil.
29 . The method of claim 26 , wherein the polyether- or polyester-modified polydialkylsiloxane is about 8 to about 33 percent by volume of the mixture.
30 . The method of claim 26 , wherein the polyether- or polyester-modified polydialkylsiloxane is about 15 to about 20 percent by volume of the mixture.
31 . The method of claim 26 , wherein the polyether- or polyester-modified polydialkylsiloxane and the motor oil are mixed by sonic mixing.
32 . The method of claim 26 , wherein the polyether- or polyester-modified polydialkylsiloxane and the motor oil is heated to at least about 200° F. (about 93° C.) during mixing.
33 . The method of claim 26 , further comprising adding the oil-and-polydialkylsiloxane mixture to additional motor oil to form a secondary mixture.
34 . The method of claim 33 , wherein the polyether- or polyester-modified polydialkylsiloxane is less than about 2.5 percent by volume of the secondary mixture.
35 . The method of claim 34 , wherein the polyether- or polyester-modified polydialkylsiloxane comprises about 1 to about 1.5 percent by volume of the secondary mixture.
36 . The method of claim 19 , wherein the polydialkylsiloxane particles are dispersed substantially uniformly in the mixture.
37 . A motor oil mixture comprising:
a petroleum-derived or synthetic motor oil; and polyether- or polyester-modified polydialkylsiloxane dispersed in the motor oil.
38 . The motor oil mixture of claim 37 wherein the polyether- or polyester-modified polydialkylsiloxane is represented by the general formula (1)
wherein
Z is independently selected from O,
R 1 and R 1′ are independently selected from C 1 -C 6 alkyl and -Z-(C 1 -C 6 alkyl)
R 2 and R 2′ are independently selected from C 1 -C 6 alkyl;
R 3 is —(C(R 6 )(R 7 ))—;
R 4 is —(C(R 8 )(R 9 )) v —;
R 5 is selected from hydrogen, —O—(C 1 -C 6 -alkyl) and C 1 -C 6 alkyl;
R 6 , R 7 , R 8 and R 9 are independently selected from hydrogen and C 1 -C 6 alkyl;
n is an integer from 1 to 10;
m is an integer from 0 to 5;
v is an integer from 1 to 4;
x is an integer from 1 to 150; and
y is an integer from 1 to 500.
39 . The motor oil mixture of claim 38 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
40 . The motor oil mixture of claim 38 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
41 . The motor oil mixture of claim 37 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
42 . The motor oil mixture of claim 41 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
43 . The motor oil mixture of claim 37 , wherein the motor oil is a synthetic motor oil that mostly comprises a basestock selected from the group consisting of polyalphaolefins, diesters, and polyolesters.
44 . The motor oil mixture of claim 37 , wherein the motor oil mostly comprises a purified form of crude oil.
45 . The motor oil mixture of claim 37 , wherein the polyether- or polyester-modified polydialkylsiloxane particles are dispersed substantially uniformly in the motor oil.
46 . The motor oil mixture of claim 37 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form at least about 0.5 percent by volume of the motor oil dispersion.
47 . The motor oil mixture of claim 37 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form at least about 1 percent by volume of the motor oil dispersion.
48 . The motor oil mixture of claim 37 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form about 8 to about 33 percent by volume of the motor oil dispersion.
49 . The motor oil mixture of claim 37 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form about 15 to about 20 percent by volume of the motor oil dispersion.
50 . A motor comprising:
a mechanism for converting energy from an energy source into mechanical displacement of motor parts; a lubrication system including a conduit that passes through the motor and offers access to the displaceable motor parts; and polyether- or polyester-modified polydialkylsiloxane particles in the conduit of the lubrication system.
51 . The motor of claim 50 wherein the polyether- or polyester-modified polydialkylsiloxane is represented by the general formula (1)
wherein
Z is independently selected from O,
R 1 and R 1′ are independently selected from C 1 -C 6 alkyl and -Z-(C 1 -C 6 alkyl)
R 2 and R 2′ are independently selected from C 1 -C 6 alkyl;
R 3 is —(C(R 6 )(R 7 ))—;
R 4 is —(C(R 8 )(R 9 )) v —;
R 5 is selected from hydrogen, —O—(C 1 -C 6 -alkyl) and C 1 -C 6 alkyl;
R 6 , R 7 , R 8 and R 9 are independently selected from hydrogen and C 1 -C 6 alkyl;
n is an integer from 1 to 10;
m is an integer from 0 to 5;
v is an integer from 1 to 4;
x is an integer from 1 to 150; and
y is an integer from 1 to 500.
52 . The motor of claim 51 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
53 . The motor of claim 51 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
54 . The motor of claim 50 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
55 . The motor of claim 54 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
56 . The motor of claim 50 , wherein the motor is an internal combustion engine.
57 . The motor of claim 50 , wherein the polyether- or polyester-modified polydialkylsiloxane particles are dispersed in motor oil.
58 . The motor of claim 57 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form at least about 0.5 percent by volume of the motor oil dispersion.
59 . The motor of claim 50 , wherein the motor is a 4-stroke engine.
60 . The motor of claim 51 , wherein the motor is a 4-stroke engine.
61 . The motor of claim 50 , wherein the motor is a 2-stroke engine.
62 . The motor of claim 51 , wherein the motor is a 2-stroke engine.
63 . Use of a polyether- or polyester-modified polydialkylsiloxane as an additive to a motor oil, wherein said polyether- or polyester-modified polydialkylsiloxane is represented by the general formula 1
wherein
Z is independently selected from O,
R 1 and R 1′ are independently selected from C 1 -C 6 alkyl and -Z-(C 1 -C 6 alkyl)
R 2 and R 2′ are independently selected from C 1 -C 6 alkyl;
R 3 is —(C(R 6 )(R 7 ))—;
R 4 is —(C(R 8 )(R 9 )) v —;
R 5 is selected from hydrogen, —O—(C 1 -C 6 -alkyl) and C 1 -C 6 alkyl;
R 6 , R 7 , R 8 and R 9 are independently selected from hydrogen and C 1 -C 6 alkyl;
n is an integer from 1 to 10;
m is an integer from 0 to 5;
v is an integer from 1 to 4;
x is an integer from 1 to 150; and
y is an integer from 1 to 500.
64 . The use of claim 63 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
65 . The use of claim 63 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
66 . The use of claim 63 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
67 . The use of claim 63 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.Join the waitlist — get patent alerts
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