Detergent composition and method for its use

Details Detergent composition and method for its use Detergent composition and method for its use

C - Chemistry, Metallurgy

11

D

134/3.3

C11D 1/08 (2006.01) C11D 1/00 (2006.01) C11D 3/10 (2006.01) C11D 3/37 (2006.01) C11D 7/12 (2006.01) C11D 7/26 (2006.01)

Patent

CA 1197157

ABSTRACT OF THE DISCLOSURE : Fabrics can be washed with a wash liquor to which has been added a detergent active material, a water-soluble carbonate material such as sodium carbonate and a carboxylic polymer such as hydrolysed polymaleic anhydride or a hydrolysed copolymer of maleic anhydride, ethyl acrylate and vinyl acetate. The polymer reduces the level of inorganic deposition on the fabrics provided that the initial calcium/carbonate saturation ratio in the liquor is below about 50. Thus the method is particularly suitable for use with water having a hardness below 20° FH, at product dosages below 5 g/1, and/or at temperatures below 60°C. The saturation ratio may also be reduced by including a calcium sequestrant such as NTA in the composition.

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