Patent ID: 6875288
Filing Date: 2005-04-05
Classification: B08B,C11D,H01L

Abstract:
1. A cleaning agent consisting of a surfactant and an organic solvent, wherein: the surfactant includes at least one anionic surfactant selected from the group consisting of anionic esters of phosphoric acid represented by the following formula: wherein R 1 represents an alkyl group or an alkylaryl group; R 2 represents H or a R 3 O(CH 2 CH 2 O) n group; R 3 represents an alkyl group or an alkylaryl group, and R 1 and R 3 may be the same or different; and m and n represent integers; and the organic solvent is at least one compound selected from the group consisting of ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monobutyl ether, diethylene glycol dimethyl ether, dipropylene glycol dimethyl ether, formamide, monomethylformamide, dimethylformamide, monoethlyformamide, diethylformamide, acetamide, monomethylacetamide, N-methylpyrrolidone, N-ethylpyrrolidone, N,N-dimethylformamide, N,N-dimethylacetamide, dimethyl sulfoxide, dimethyl sulfone, diethyl sulfone, bis(2-hydroxysulfone), tetramethylene sulfone, methanol, ethanol, 1-propanol, 2-propanol, 1 -hexanol, 1 -nonanol, cyclohexanol and benzyl alcohol.