Use of a polyalkoxysiloxane-based oil as a lubricating agent
AssigneeNyco
InventorsChristophe Corbun, Jean-Louis Mansoux, Christelle Louise, Grégoire Hervé
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Abstract
The present invention relates to the use of a polyalkoxysiloxane base oil of formula (I) in which each R1 is independently a C1 to C4 alkyl group or a phenyl, each R2 is independently a C2 to C22 alkyl or alkenyl group or a phenyl, R3 is either a methyl group or a CH2 group connected to the other R3 group by a single bond, thus forming a ring in which the 2 terminal silicon atoms are connected by a CH2—CH2 bridge, x is an integer between 0 and 50, y is an integer between 1 and 500 and such that the ratio y/x is strictly greater than 0.5, or of a mixture of polyalkoxysiloxane base oils of formula (I), as a lubricating agent.
Claims16
A method for lubricating comprising utilizing a lubricating agent which is a polyalkoxysiloxane base oil of formula (I)
- wherein
- each R1 is independently a C1 to C4 alkyl group or a phenyl,
- each R2 is independently a C2 to C22 alkyl or alkenyl group or a phenyl,
- R3 is either a methyl group, or a CH2 group, connected to the other R3 group by a single bond, thus forming a ring in which the 2 terminal silicon atoms are connected by a CH2—CH2 bridge,
- x is equal to 0,
- y is an integer between 1 and 500,
- or a mixture of polyalkoxysiloxane base oils of formula (I), and
- wherein the coefficient of friction, CoF, measured for the polyalkoxysiloxanes of formula (I) is below 0.1.
Polyalkoxysiloxane of formula (II)
- wherein
- each R1 is independently a C1 to C4 alkyl group or a phenyl,
- each R2 is independently a C4 to C16 alkyl or alkenyl group, or a phenyl,
- x is equal to 0,
- y is an integer between 1 and 500,
- and
- wherein the coefficient of friction, CoF, measured for the polyalkoxysiloxanes of formula (II) is below 0.1.
Dependencies are inferred from the claim text.