Patent ID: 6391837
Filing Date: 2002-05-21
Classification: C11D

Abstract:
A cleaning composition, comprising:a first solvent having a dielectric constant of at least 15.0, wherein said first solvent is selected from the group consisting of butyrolactone, N-methylpyrrolidone, N,N-dimethylformamide, acetone, methyl ethyl ketone, cyclohexanol, and mixtures thereof; a second solvent having a dielectric constant less than 3.0; a third solvent, wherein said third solvent comprises one or a plurality of esters, wherein each of said one or plurality of esters is formed from a carboxylic acid having at least ten carbon atoms and an alcohol having between one and four carbon atoms; a first surfactant, a second surfactant; wherein said first solvent is present in an amount of between about 25 weight percent and about 40 weight percent, and wherein said second solvent is present in an amount between about 5 weight percent and about 25 weight percent, and wherein said third solvent is present in an amount between about 15 weight percent and about 35 weight percent.