| 摘要 |
An environmentally safe composition for removing paint and other materials deposited on a substrate, such as graffiti sprayed, on a prepainted surface including a synergistic combination of 2 to 20 parts by weight of an anionic and/or nonionic poly alkoxylated surfactant such as a poly alkoxylated alkyl ethercarboxylic acid, poly alkoxylated alkyl ethercarboxylic ester, poly alkoxylated alkyl ethercarboxylate, poly alkoxylated fatty acid, poly alkylene glycol ester, poly alkoxylated alcohol and 10 to 90 parts by weight of a poly alkylene glycol alkyl ether solvent. Preferably, the carbon content of the repeating unit of the alkoxylated group in both the surfactants and solvents is the same or differ by no more than 3 carbon atoms. 5 to 70 parts by weight of an organic solvent selected from a polar aprotic solvent and/or a hydrocarbon solvent, 3 to 25 parts by weight of a poly alkylene glycol alkyl acetate, 0.1 to 5.0 parts by weight of a hydroxyalkylated cellulose thickener and 0.1 to 2.0 parts by weight of a substance to adjust pH to between 5.O and 7.5 may optionally be present. |
