Bleaching and dyeing; fluid treatment and chemical modification – Cleaning or laundering – Removing formation impurities from artifical fiber
510337, 510340, 510341, 510356, 510360, 510535, 510342, D06L 116, C11D 172, C11D 186, C11D 1825
A method of cleaning soiled fabrics, particularly fabrics that are hydrophobic, with an aqueous fabric cleaning composition having a non-ionic surfactant. The method involves alternately adjusting the wash temperature to above and below the cloud point of the non-ionic surfactant to remove oily soils from the fabrics.
patent: 4259217 (1981-03-01), Murphy
patent: 4332692 (1982-06-01), Payne et al.
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