Aqueous surfactant compositions

Abstract

What is proposed is aqueous surfactant compositions comprising one or more alpha-sulfo fatty acid disalts (A) of the general formula (I), R 1 CH(SO 3 M 1 )COOM 2   (I) in which the radical R 1 is a linear or branched alkyl or alkenyl radical with 6 to 16 carbon atoms and the radicals M 1 and M 2 —independently of one another—are selected from the group H, Li, Na, K, Ca/2, Mg/2, ammonium and alkanolamine, one or more alkyl glycosides (B) of the general formula (II), R 2 O—[G] p   (I) in which R 2 is an alkyl and/or alkenyl radical with 8 to 18 carbon atoms, G is a sugar radical with 5 or 6 carbon atoms and p is numbers between 1 and 10, and water, where specific limiting conditions are to be observed. These compositions have excellent foaming ability and are suitable for use in cosmetic products.

1 . An aqueous surfactant composition comprising
 one or more alpha-sulfo fatty acid disalt (A) of general formula (I),
   R 1 CH(SO 3 M 1 )COOM 2    (I)
 
   
       in which radical R 1  is a linear or branched alkyl or alkenyl radical with 6 to 16 carbon atoms and the radicals M 1  and M 2 , independently of one another, are selected from the group consisting of H, Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine,
 one or more alkyl glycosides (B) of general formula (II),
   R 2 O—[G] p    (II),
 
 
 
       in which R 2  is an alkyl and/or alkenyl radical with 8 to 18 carbon atoms, G is a sugar radical with 5 or 6 carbon atoms and p is numbers between 1 and 10,
 water, 
 
       where the following provisos apply:
 with regard to the compound (A), it is the case that a fraction of the compound (A) in which the radical R 1  is an alkyl or alkenyl radical with 14 or more carbon atoms, based on the total amount of the compound (A) in the aqueous surfactant composition, is 20% by weight or less; 
 with regard to the compound (B), it is the case that a fraction of the compound (B) in which the radical R 2  is an alkyl or alkenyl radical with 15 or more carbon atoms, based on the total amount of the compound (B) in the aqueous surfactant composition, is 5% by weight or less; 
 if the aqueous surfactant composition comprises one or more ester sulfonate (E) of general formula (V),
   R 5 CH(SO 3 M 5 )COOR 6    (V)
 
 
 
       in which radical R 5  is a linear or branched alkyl or alkenyl radical with 6 to 18 carbon atoms and radical R 6  is a linear or branched alkyl or alkenyl radical with 1 to 20 carbon atoms, and the radical M 5  is selected from the group consisting of Li, Na, K, Ca/2, Mg/2, ammonium and alkanolamine, it is the case that the compound (A), based on the totality of the compounds (A) and (E), is present to 50% by weight or more;
 a weight ratio of the compounds (A):(B) in the aqueous surfactant composition is in the range from 0.6:1 to 1:0.6. 
 
     
     
         2 . The composition according to  claim 1 , where the radicals M 1  and M 2  are Na. 
     
     
         3 . The composition according to  claim 1 , wherein the composition additionally comprises one or more compound (C) of general formula (III),
   R 4 COOM 3    (III),
   
       in which the radical R 4  is a linear or branched alkyl or alkenyl radical with 7 to 19 carbon atoms and the radical M 3  is selected from the group consisting of H, Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine. 
     
     
         4 . The composition according to  claim 1 , wherein the composition additionally comprises one or more inorganic salt of sulfuric acid (D) of general formula (IV),
   (M 4 )2SO 4    (IV)
   
       wherein M 4  is selected from the group consisting of Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine. 
     
     
         5 . The composition according to  claim 1 , wherein a pH of the composition is in the range from 4.3 to 5.8. 
     
     
         6 . A cosmetic product comprising a composition according  claim 1 . 
     
     
         7 . The cosmetic product according to  claim 6  in the form of hair shampoos, shower gels, soaps, syndets, washing pastes, washing lotions, scrub preparations, foam baths, oil baths, shower baths, shaving foams, shaving lotions, and shaving creams. 
     
     
         8 . The composition according to  claim 1  wherein the radical R 6  is an alkenyl radical or is branched above 3 carbon atoms.