Lubricant including polyether-or polyester modified polydialkylsiloxane
OwnerJohn Murrayinventor
Life of this patent
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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.
Claims67
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.
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.
A motor oil mixture comprising:
- a petroleum-derived or synthetic motor oil;
- and
- polyether- or polyester-modified polydialkylsiloxane dispersed in the motor oil.
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.
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,
- R1 and R1′ are independently selected from C1-C6 alkyl and -Z-(C1-C6 alkyl)
- R2 and R2′ are independently selected from C1-C6 alkyl;
- R3 is —(C(R6)(R7))—;
- R4 is —(C(R8)(R9))v—;
- R5 is selected from hydrogen, —O—(C1-C6-alkyl) and C1-C6 alkyl;
- R6, R7, R8 and R9 are independently selected from hydrogen and C1-C6 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.
Dependencies are inferred from the claim text.