US2006105923A1PendingUtilityA1
Lubricant including polyether- or polyester modified polydialkylsiloxane
Individually held — no corporate assignee on recordPriority: Dec 12, 2003Filed: Dec 13, 2004Published: May 18, 2006
Est. expiryDec 12, 2023(expired)· nominal 20-yr term from priority
Inventors:John Murray
C10M 2229/0475C10N 2040/252C08L 83/04C10N 2040/26C10M 2229/0465C10M 2229/0485C10N 2030/50C10N 2040/25C10N 2030/26C10N 2050/023C10M 2229/048C10M 2229/047C10M 107/50C10N 2050/02C10N 2050/01C10N 2030/06C10M 2229/046C10N 2040/08C10N 2020/06C10M 155/02
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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 enhancing the performance of a motor vehicle comprising a fluid conduit system with a fluid, the method comprising the steps of
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 said fluid; and operating the engine of the vehicle, wherein the mixture of polydialkylsiloxane particles and the fluid 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 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.
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 fluid is an oil.
12 . The method of claim 11 , wherein the oil is a motor oil
13 . The method of claim 12 , wherein the motor oil is a petroleum-based motor oil.
14 . The method of claim 13 , wherein the motor oil is a synthetic motor oil.
15 . The method of claim 1 , wherein the fluid-conduit system is a power-steering lubrication system.
16 . The method of claim 1 , wherein the fluid-conduit system is a fuel system.
17 . The method of claim 16 , wherein 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.
18 . 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.
19 . The method of claim 18 , wherein the polyether- or polyester-modified polydialkylsiloxane is dispersed substantially uniformly in the oil when added to the fluid-conduit system.
20 . 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.
21 . The method of claim 20 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.
22 . The method of claim 21 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
23 . The method of claim 21 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
24 . The method of claim 20 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
25 . The method of claim 24 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
26 . The method of claim 24 , 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.
27 . The method of claim 20 , wherein the lubricant is motor oil.
28 . The method of claim 27 , wherein the motor oil is a petroleum-based motor oil.
29 . The method of claim 27 , wherein the motor oil is a synthetic motor oil.
30 . The method of claim 27 , wherein the polyether- or polyester-modified polydialkylsiloxane is about 8 to about 33 percent by volume of the mixture.
31 . The method of claim 27 , wherein the polyether- or polyester-modified polydialkylsiloxane is about 15 to about 20 percent by volume of the mixture.
32 . The method of claim 27 , wherein the polyether- or polyester-modified polydialkylsiloxane and the motor oil are mixed by sonic mixing.
33 . The method of claim 27 , wherein the polyether- or polyester-modified polydialkylsiloxane and the motor oil is heated to at least about 200° F. (about 93° C.) during mixing.
34 . The method of claim 27 , further comprising adding the oil-and-polydialkylsiloxane mixture to additional motor oil to form a secondary mixture.
35 . The method of claim 34 , wherein the polyether- or polyester-modified polydialkylsiloxane is less than about 2.5 percent by volume of the secondary mixture.
36 . The method of claim 35 , wherein the polyether- or polyester-modified polydialkylsiloxane comprises about 1 to about 1.5 percent by volume of the secondary mixture.
37 . The method of claim 20 , wherein the polydialkylsiloxane particles are dispersed substantially uniformly in the mixture.
38 . A motor oil mixture comprising:
a petroleum-derived or synthetic motor oil; and polyether- or polyester-modified polydialkylsiloxane dispersed in the motor oil.
39 . The motor oil mixture of claim 38 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 8 )) 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.
40 . The motor oil mixture of claim 39 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
41 . The motor oil mixture of claim 39 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
42 . The motor oil mixture of claim 38 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
43 . The motor oil mixture of claim 42 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
44 . The motor oil mixture of claim 38 , wherein the motor oil is a synthetic motor oil that mostly comprises a basestock selected from the group consisting of polyalphaolefins, diesters, and polyolesters.
45 . The motor oil mixture of claim 38 , wherein the motor oil mostly comprises a purified form of crude oil.
46 . The motor oil mixture of claim 38 , wherein the polyether- or polyester-modified polydialkylsiloxane particles are dispersed substantially uniformly in the motor oil.
47 . The motor oil mixture of claim 38 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form at least about 0.5 percent by volume of the motor oil dispersion.
48 . The motor oil mixture of claim 38 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form at least about 1 percent by volume of the motor oil dispersion.
49 . The motor oil mixture of claim 38 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form about 8 to about 33 percent by volume of the motor oil dispersion.
50 . The motor oil mixture of claim 38 , wherein the polyether- or polyester-modified polydialkylsiloxane particles form about 15 to about 20 percent by volume of the motor oil dispersion.
51 . A combustion engine comprising:
a cylinder wall and a piston, both having surfaces; a coating on either one or both of the surfaces of the cylinder and/or piston wherein said coating was formed by polyether- or polyester-modified polydialkylsiloxane particles subjected to a high temperature at the time of coating the respective surfaces.
52 . The combustion engine of claim 51 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.
53 . The combustion engine of claim 51 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
54 . The combustion engine of claim 51 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
55 . The combustion engine of claim 51 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
56 . The combustion engine of claim 55 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
57 . The combustion engine of claim 51 , wherein the coating was applied by administering it into the combustion chamber of a running motor.
58 . The combustion engine of claim 51 , wherein the coating was applied by administering it to the respective surfaces of the motor while standing still, prior to complete assembly of the motor, or in an at least partially disassembled stage of the motor.
59 . The combustion engine of claim 51 , wherein the polyether- or polyester-modified polydialkylsiloxane particles are dispersed in motor oil.
60 . The combustion engine 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.
61 . The combustion engine of claim 51 , wherein the motor is a 4-stroke engine.
62 . The combustion engine of claim 52 , wherein the motor is a 4-stroke engine.
63 . The combustion engine of claim 51 , wherein the motor is a 2-stroke engine.
64 . The combustion engine of claim 52 , wherein the motor is a 2-stroke engine.
65 . 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.
66 . The use of claim 65 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
67 . The use of claim 65 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
68 . The use of claim 65 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
69 . The use of claim 65 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
70 . A coating formed by a polyether- or polyester-modified polydialkylsiloxane that was subjected to a temperature above 300 F (149° C.) when applied to a surface to be coated.
71 . The coating of claim 70 , 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.
72 . The coating of claim 70 , wherein said C 1 -C 6 alkyl comprises methyl, ethyl, propyl, butyl, pentyl and isomers thereof.
73 . The coating of claim 70 , wherein R 1 , R 1′ , R 2 and R 2′ are methyl.
74 . The coating of claim 70 , wherein the polydialkylsiloxane particles have an average diameter of less than 2 microns.
75 . The coating of claim 70 , wherein the polydialkylsiloxane particles have an average diameter of less than 1 micron.
76 . The coating of claim 70 , wherein the temperature is as high as the temperature in an internal combustion engine during the combustion process.
77 . The coating of claim 70 , wherein the temperature is above 345 Fahrenheit (174° C.).
78 . The coating of claim 70 , wherein the temperature is between 345 and 2000 Fahrenheit (174° C.-1093° C.).
79 . The coating of claim 70 , wherein the temperature is between 345 and 425 Fahrenheit (174° C.-218° C.).Join the waitlist — get patent alerts
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