| 摘要 |
<p>Method is by application of an aq. emulsion comprising an anionic detergent, a de-staining compn. comprising a mixt. of a non-polar solvent and 95 degrees alcohol and a wetting agent of anionic type. The emulsion is acidic primarily due to phosphoric acid/ester used as detergent. Plastic coatings are readily cleaned despite the presence of a lime-contg. layer on the tiles or flagstones from previous washings. Rubber marks are also cleaned off using this compn.</p> |
