Cylic oligomer traction fluid
AssigneeThe Lubrizol Corporation
InventorsStuart L. Bartley, Douglas M. Barr, Richard M. Lange, Craig D. Tipton
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Abstract
Cyclic oligomers derivable from the copolymerization of isobutylene and isoprene can be hydrogenated to form 1-(2,2,4-trimethylpentyl)-2-isopropyl-3,3,5,5-tetramethylcyclohexane and related compounds, which are useful in lubricants such as a traction fluids.
Claims24
A method for lubricating a mechanical power transmission apparatus, comprising supplying to said apparatus a fluid comprising a saturated alicyclic hydrocarbon composition comprising molecules containing about 13 to about 33 carbon atoms, said composition being prepared by the reaction of branched C4 to C6 ethylenically mono-unsaturated and di-unsaturated hydrocarbons in the presence of an acid catalyst, followed by hydrogenation.
A method for lubricating a mechanical power transmission apparatus, comprising supplying to said apparatus a fluid comprising a saturated alicyclic hydrocarbon composition comprising molecules represented by the general structure
- 9
- where n is 2 to about 6 and R hydrogen or is a branched alkyl group containing about 4 to about 12 carbon atoms.
A lubricant comprising a saturated alicyclic hydrocarbon composition comprising molecules containing about 13 to about 33 carbon atoms, said composition being prepared by the reaction of branched C4 to C6 ethylenically unsaturated hydrocarbons in the presence of a Lewis acid, followed by hydrogenation;
- and at least one additive selected from the group consisting of viscosity modifiers, dispersants, detergents, antioxidants, and anti-wear agents.
A lubricant comprising an alicyclic hydrocarbon composition comprising molecules represented by the general structure
- 12
- where n is 2 to about 6 and R is hydrogen or a branched alkyl group containing about 4 to about 12 carbon atoms;
- and at least one additive selected from the group consisting of viscosity modifiers, dispersants, detergents, antioxidants, and anti-wear agents.
A composition of matter comprising a saturated hydrocarbon represented by the structure
- 13
A method for preparing a saturated alicyclic hydrocarbon having about 13 to about 33 carbon atoms, comprising reacting isobutylene and isoprene in the presence of an acid catalyst, thereby preparing an unsaturated alicyclic hydrocarbon, and hydrogenating the unsaturation thereof to provide said saturated alicyclic hydrocarbon.
Dependencies are inferred from the claim text.