| 摘要 |
Strong alkaline cleaning solutions and concentrates therefor can be prepared without using any phosphorus or nitrogen containing surfactants by combining a weak carboxylate surfactant with at least one, or preferably both, of an aliphatic alcohol alkoxylate nonionic surfactant and an alkyl phenol alkoxylate nonionic surfactant. The predomina nt alkoxylates in the nonionic surfactants are ethoxylates, but at least the non-aromatic based surfactant preferably contains some propoxylate also.
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