Novel functional fluid composition
AssigneeBASF SE
InventorsHarald DIETL, Bayram AYDIN, Stefan DAMBACH
Life of this patent
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Abstract
A functional fluid composition useful as a brake fluid comprising from 0 to 94.99% by weight of alkoxy glycols of borate esters, from 5 to 99.99% by weight of alkoxy glycols, from 0.01 to 5% by weight of alkoxylates of saturated or unsaturated hydroxy-substituted fatty acids such as ricinoleic acid or esters thereof, the hydroxyl group located on the fatty acid side chain being etherified by at least one oxyalkylene unit, and from 0 to 10% by weight of an additive package comprising additives with corrosion inhibition action.
Claims12
A functional fluid composition comprising:
- (A) from 0 to 94.99% by weight, based on the weight of the total composition, of one or more alkoxy glycol borate esters having the general formula (I)
- [R1—O—(CH2CH2—O)n]3B (I)
- wherein R1 is a C1- to C8-alkyl radical or a mixture of such radicals and n has a value of from 2 to 6;
- (B) from 5 to 99.99% by weight, based on the weight of the total composition, of one or more alkoxy glycol components having the general formula (II)
- R2—O—(CH2CH2—O)m—H (II)
- wherein R2 is a C1- to C8-alkyl radical or a mixture of such radicals and m has a value of from 2 to 6, R2 and/or m being different or identical to R1 and/or n, respectively;
- (C) from 0.01 to 5% by weight, based on the total weight of the composition, of an alkoxylate of a saturated or unsaturated hydroxy-substituted C8 to C22 fatty acid or of an ester thereof, the hydroxyl group located on the fatty acid side chain of said alkoxylate being etherified by at least one oxyalkylene unit;
- (D) from 0 to 10% by weight, based on the total weight of the composition, of an additive package comprising one or more additives with corrosion inhibition action.
The functional fluid composition according to any of the precedeing claims further comprising as component (D) at least one alkylamine ethoxylate, comprising at least one linear or branched C3 to C20 alkyl chain and 1 to 35 ethylene oxide units.
Dependencies are inferred from the claim text.