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pp.35-40
Alkaline cleaning agent(ACA) was prepared by blending of POE(4)octadecylmine(S-204), Na2CO3, sodium orthosilicate(Na-OSi). Tetronix T-701(T-701), and MJU-100A. The physical properties of ACA tested with steel specimen showed the following results. The cleaning powers of ACA-6(S-204 80g/Na2CO3, 160g/Na-OSi, 80g/T-701, 60g/MJU-100A, 20g mixture) for press-rust preventing oil was 98% and 99% degreasing at 2wt%, 70℃ and 90℃, respectively : for quenching oil, the cleaning power of ACA-6 was 95% degreasing at 2wt% and 70℃. From these results, it was ascertained that ACA-6 exhibited a good cleaning power. Foam heights measured immediately after foaming by Ross & Miles method and Ross & Clark method at 3wt%. 60℃ were 17mm and 40mm, respectively. As the result, ACA-6 was proved a good low foaming cleaning agent.
