Thickener component and lubricating grease containing an aluminium complex
OwnerPeter Finmans, Christina Diblitz +2inventors
InventorsPeter Finmans, Christina Diblitz, Frank Allmuller, Detlef Hoell
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Abstract
This invention relates to a thickener component based on an aluminium carboxylate compound and to an aluminium complex grease made therefrom with addition of a base liquid.
Claims8
A thickener component comprising
- (A) from 99.99 to 94 weight percent of an aluminium compound which can be prepared by reacting a hydrolysable aluminium compound with one or more aliphatic monocarboxylic acid(s) or derivatives thereof, optionally in the presence of water and/or a C1- to C40-alcohol, thereby forming one or more aluminium compound(s) having at least one aluminium carboxylate bond per aluminium atom and, in addition, one or more aluminium-, hydroxy-, aluminium alcoholate-, or/or aluminium-oxygen-aluminium bond(s) and
- (B) from 0.01 to 6 weight percent of an ester compound having from 6 to 60 carbon atoms,
- each referring to the total of components (A) and (B).
A thickener component according to any one of the preceding claims,
- characterised in that the aliphatic monocarboxylic acid is a branched or unbranched aliphatic monocarboxylic acid of the type R1—COOH, wherein R1 is a C10- to C40-radical, preferably a C14- to C24-radical, or a derivative of this monocarboxylic acid.
A thickener component according to any one of the preceding claims,
- characterised in that a temperature of 145° C., preferably 135° C., is not exceeded during the production of the aluminium compound by reacting a hydrolysable aluminium compound with one or more carboxylic acid(s) or carboxylic acid derivative(s).
An aluminium complex grease comprising the composition according to any one of the preceding claims and, in addition, a base liquid which is a hydrocarbon compound and/or a synthetic oil and which is added to the total composition in quantities of from 30 to 98 weight percent, preferably 60 to 95 weight percent.
Dependencies are inferred from the claim text.