| 摘要 |
A laundry treatment process, which comprises tumble drying clothes in the presence of a chelating agent which has one nitrogen atom and at least four carboxylic acid groups per molecule, or a salt thereof. The preferred chelating agent being is a disuccinnic acid or a salt thereof of the general formula HOOC-(R1.COOH)R2-NR5-R3(R4.COOH)-COOH wherein R1-R5 are preferably each independently, C1-C5 alkyl, hydroxy-alkyl or hydrogen.
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