Patent ID: 9587208
Date: 2017-03-07
CPC Classifications: C11D,G03F,H01L

Claim:
1. A cleaning liquid composition, consisting essentially of: 0.1 to 20% by weight of at least one quaternary ammonium hydroxide selected from the group consisting of tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, and choline, 0.005 to 0.3% by weight of potassium hydroxide, 10 to 80% by weight of at least one water-soluble organic solvent selected from the group consisting of alcohols selected from ethanol, 2-propanol, ethylene glycol, propylene glycol, glycerine, diethylene glycol, xylitol, and sorbitol; glycol ethers selected from diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, and dipropylene glycol monomethyl ether; amides selected from N,N-dimethyl acetamide, and N-methyl-2-pyrrolidone; dimethyl sulfoxide; and 1,3-dimethyl-2-imidazolidinone, 0.001 to 7% by weight of at least one pyrazole selected from the group consisting of pyrazole, 3,5-dimethyl pyrazole, 3-methyl-5-pyrazolone, and 3-amino-5-hydroxypyrazole, and water.