Method of Laundering Fabric

Abstract

Method of laundering soiled fabrics in an automatic washing machine, which method having the steps of: a) forming an aqueous laundering solution by mixing from 11 to 40 l of water and a solid detergent composition comprising a surfactant system, the aqueous laundering solution having from 200 ppm to 5,000 ppm of the detergent composition; b) putting in contact soiled fabrics with the aqueous laundering solution; and c) washing the fabrics in the solution, wherein the solid detergent composition is such that at least 30% of the detergent composition dissolves in 60 seconds in water and wherein the surfactant system has a micellar stability (τ2) of at most 30 seconds.

1 . A method of laundering soiled fabrics in an automatic washing machine, the method comprises the steps of:
 a) forming an aqueous laundering solution by mixing from about 11 to about 40 l of water and a solid detergent composition comprising a surfactant system, said aqueous laundering solution comprising from about 200 ppm to about 5,000 ppm of the detergent composition;   b) putting in contact soiled fabrics with said aqueous laundering solution; and   c) washing said soiled fabrics in said aqueous laundering solution, wherein said solid detergent composition is such that at least about 30% of the detergent composition dissolves in about 60 seconds in water according to the dissolution of the solid detergent composition test and wherein the surfactant system has a micellar stability τ2 of at most about 30 seconds according to the micellar stability test.   
     
     
         2 . The method of laundering soiled fabrics according to  claim 1 , wherein the aqueous laundering composition comprises from about 6 to about 15 litres of water. 
     
     
         3 . The method of laundering soiled fabrics according to  claim 1 , wherein the aqueous laundering composition comprises from about 3000 to about 6000 ppm of detergent composition. 
     
     
         4 . The method of laundering soiled fabrics according to  claim 1 , wherein the weight ratio of soiled fabric to aqueous laundering solution ranges from about 1:1 to about 1:10. 
     
     
         5 . The method of laundering soiled fabrics according to  claim 1 , wherein the solid detergent composition is such that at least about 50% of the detergent composition dissolves in 60 seconds in water. 
     
     
         6 . The method of laundering soiled fabrics according to  claim 1 , wherein the solid detergent composition comprises organic matter and is such that at least about 50% of organic matter of the detergent composition dissolves in about 60 seconds in water. 
     
     
         7 . The method of laundering soiled fabrics according to  claim 1 , wherein the solid detergent composition comprises anionic surfactant and is such that at least about 50% of the anionic surfactant of the detergent composition dissolves in about 60 seconds in water. 
     
     
         8 . The method of laundering soiled fabrics according to  claim 1 , wherein the surfactant system has a micellar stability T2 of at most about 26 seconds and of at least about 10 s.