Heavy duty washing process

Details Heavy duty washing process Heavy duty washing process

C - Chemistry, Metallurgy

11

D

134/31, 182/15.3

C11D 3/43 (2006.01) B01D 61/24 (2006.01) B01D 71/52 (2006.01) B01D 71/58 (2006.01) C11D 1/72 (2006.01) C11D 3/18 (2006.01) D06F 43/08 (2006.01)

Patent

CA 2018738

ABSTRACT A heavy duty process for laundering greasy stains from a fabric which comprises treating the fabric with an aqueous detergent composition comprising (a) 0.5 - 5 % by weight of a nonionic surfactant and (b) 1 - 10 % by weight of an apolar solvent in a ratio from less than 1 : 1 to 1 : 10. Preferably, the hot wash liquor is treated in a filtering step using microfilters to separate the organic solvent phase from the aqueous phase, which is then recycled.

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