Use of isopalmitic acid esters as lubricants for two-stroke engines
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsFrank Bongardt, Karl-Heinz Schmid, Reinhold Wuest
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Abstract
The invention relates to the use of isopalmitic acid esters of branched aliphatic polyols containing 2 to 6 primary hydroxyl groups and 4 to 10 carbon atoms as a base oil for two-stroke engine lubricants. The isopalmitic acid esters are low in viscosity, even at low temperatures, and do not crystallize out in gasoline, even over periods of several days.
Claims17
In a mixture of gasoline and a lubricant for use in a two-stroke engine, the improvement wherein the lubricant comprises a lubricating quantity of an isopalmitic acid ester wherein the ester group is a polyol having from 2 to 6 primary hydroxyl groups and from 4 to 10 carbon atoms.
In a process for preparing a mixture of gasoline and lubricant for use in a two-stroke engine, the improvement wherein a lubricating quantity of an isopalmitic acid ester wherein the ester group is a polyol having from 2 to 6 primary hydroxyl groups and from 4 to 10 carbon atoms is added to the gasoline.
In a mixture of gasoline and a lubricant for use in a two-stroke engine, the improvement wherein the lubricant comprises a lubricating quantity of an isopalmitic acid ester wherein the ester group is a polyol mixture comprised of:
- (a) from 60% to 99.9% by weight of at least one branched aliphatic polyol having from 2 to 6 primary hydroxyl groups and from 4 to 10 carbon atoms;
- and, (b) from 0.1% to 40% by weight of at least one aliphatic, saturated unbranched diol having from 2 to 12 carbon atoms.
Dependencies are inferred from the claim text.