Lubricant comprising a liquid ethylene copolymer
AssigneeBASF SE
InventorsMartin Wendker, Ivette Garcia Castro, Jan Strittmatter, Karolin Geyer, Wolfgang Grabarse, Markus Scherer, Rene Koschabek
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Abstract
The present invention relates to a lubricant comprising a liquid ethylene copolymer which comprises in polymerized form 20 to 60 wt % of ethylene; and at least 20 wt % of an acrylate, which is selected from C1-C22 alkyl (meth)acrylate. It further relates to the liquid ethylene copolymer; and to a method for reducing friction between moving surfaces comprising the step of contacting the surfaces with the lubricant or with the ethylene copolymer.
Claims18
A lubricant comprising a liquid ethylene copolymer which comprises in polymerized form
- 20 to 60 wt % of ethylene;
- and
- at least 20 wt % of an acrylate, which is selected from C1-C22 alkyl (meth)acrylate, and
- wherein the ethylene copolymer is free of further monomers beside the ethylene and the acrylate wherein the acrylate is free of a hydroxyalkl (meth)acrylate.
A lubricant comprising a liquid ethylene copolymer which comprises in polymerized form
- 25 to 55 wt % of ethylene,
- at least 20 wt % of the polar acrylate, and
- at least 15 wt % of the unpolar acrylate,
- comprising
- a polar acrylate selected from Ci-05 alkyl (meth)acrylate, and
- an unpolar acrylate selected from C6-C22 alkyl (meth)acrylate. and
- wherein the ethylene copolymer is free of a hydroxyalkyl (meth)acrylate and comprises in polymerized form.
A lubricant comprising a liquid ethylene copolymer which comprises in polymerized form
- 20 to 60 wt% of ethylene;
- and
- at least 20 wt% of an acrylate, wherein the acrylate comprises
- a polar acrylate selected from Ci-05 alkyl (meth)acrylate, and
- an unpolar acrylate selected from C6-C22 alkyl (meth)acrylate
- wherein the weight ratio of the unpolar acrylate to the polar acrylate is from 20:80 to 65:35, and
- wherein the ethylene copolymer is free of a hydroxyalkyl (meth)acrylate.
Dependencies are inferred from the claim text.