Blends of branched chain phthalate esters and halogenated benzene compounds

Abstract

There is disclosed a fluid comprising a mixture of about 5 percent to about 40 percent by volume of a halogenated benzene and about 60 percent to about 95 percent by volume of an alkyl branched chain phthalate ester, said fluid having a dielectric constant greater than the dielectric constant of either of the halogenated benzene or the alkyl branched chain phthalate ester. The dielectric constant of an alkyl branched chain phthalate ester having a dielectric constant above about 4.0 is increased by mixing a halogenated benzene having a dielectric constant above about 4.0 with the alkyl branched chain phthalate ester whereby the measured dielectric constant of the alkyl branched chain phthalate ester having the halogenated benzene therein, is at least 0.25 higher than the dielectric constant of either the halogenated benzene or the alkyl branched chain phthalate ester. The preferred halogenated benzene is trichlorobenzene, and the preferred alkyl branched chain phthalate ester is di-2-ethylhexylphthalate.

Dependencies are inferred from the claim text.