A FUNCTIONAL FLUID AND THE USE THEREOF

摘要

The present invention concerns a functional fluid comprising A) 1 to 99 % by weight based on the total weight of the functional fluid of alkyl(meth)acrylate polymers obtainable by polymerizing a mixture of olefinically unsaturated monomers, which consists of a) 1-100 wt% based on the total weight of the ethylenically unsaturated monomers of one or more ethylenically unsaturated ester compounds of formula (I) where R is hydrogen or methyl, R<1> means a linear or branched alkyl residue with 1-6 carbon atoms, R<2> and R<3> independently represent hydrogen or a group of the formula -COOR', where R' means hydrogen or a alkyl group with 1-6 carbon atoms, b) 0-99 wt% based on the total weight of the ethylenically unsaturated monomers of one or more ethylenically unsaturated ester compounds of formula (II) where R is hydrogen or methyl, R<4> means a linear or branched alkyl residue with 7-40 carbon atoms, R<5> and R<6> independently are hydrogen or a group of the formula -COOR", where R" means hydrogen or an alkyl group with 7-40 carbon atoms, c) 0-50 wt% based on the total weight of the ethylenically unsaturated monomers comonomers, and B) 1 to 99 % by weight based on the total weight of the functional fluid of an oxygen containing compound selected from to group of organophosphorus compounds, carboxylic acid esters and/or polyether polyols.