Aqueous compositions comprising vesicles having certain vesicle permeability

Abstract

Compositions for effectively delivering a water-soluble active material to a surface comprise: (a) from about 1% to about 30%, by weight of the composition, of a dialkyl quaternary ammonium compound having the formula: wherein R 1 and R 2 are independently C 12 to C 20 saturated alkyl chains; Y is wherein R 4 is ethyl or isopropyl; R 3 and R 5 are independently methyl, ethyl, hydroxyethyl, or hydroxypropyl; m is 1, 2, or 3; n is 1 or 2; p is 0 or 1; and X − is a suitable anion; (b) from about 0.01% to about 10%, by weight of the composition, of water-soluble active material having a C log P of less than about 2.0; and (c) at least about 60%, by weight of the composition, of water; wherein the compositions contain vesicles having a vesicle permeability index of less than about 1.3. Processes to make the compositions comprise the steps of dispersing the dialkyl quaternary ammonium compound and the water-soluble active material in an aqueous solution to form vesicles having a vesicle permeability index of less than about 1.3.

1 . An aqueous composition comprising: 
 (a) from about 1% to about 30%, by weight of the composition, of a dialkyl quaternary ammonium compound having the formula:                          wherein R 1  and R 2  are independently C 12  to C 20  saturated alkyl chains; Y is                          wherein R 4  is ethyl or isopropyl; R 3  and R 5  are independently methyl, ethyl, hydroxyethyl, or hydroxypropyl; m is 1, 2, or 3; n is 1 or 2; p is 0 or 1; and X −  is an anion;    (b) from about 0.01% to about 10%, by weight of the composition, of water-soluble active material having a C log P of less than about 2.0; and    (c) at least about 60%, by weight of the composition, of water;    wherein the compositions contain vesicles having a vesicle permeability index of less than about 1.3.    
   
   
       2 . The composition of  claim 2  wherein said vesicle permeability index of said vesicles is less than about 1.1.  
   
   
       3 . The composition of  claim 3  wherein said vesicle permeability index of said vesicles is less than about 1.0.  
   
   
       4 . The composition of  claim 1 , wherein the C log P of said water-soluble active material is less than about 1.0.  
   
   
       5 . The composition of  claim 1  wherein said water-soluble active material is selected from the group consisting of perfume raw materials, cyclodextrins, biocides, fertilizers, drugs, and mixtures thereof.  
   
   
       6 . The composition of  claim 5  wherein said water-soluble active material is a perfume raw material.  
   
   
       7 . The composition of  claim 5  wherein said water-soluble active material is a cyclodextrin.  
   
   
       8 . The composition of  claim 5  wherein said water-soluble active material is a biocide.  
   
   
       9 . The composition of  claim 1  wherein said dialkyl quaternary ammonium compound is selected from the group consisting of N,N-di(stearoyl-oxy-ethyl)-N,N-dimethyl ammonium chloride; N,N-di(hardenedtallowoyl-oxy-ethyl)-N,N-dimethyl ammonium chloride; N-stearyl-N-(stearoyl-oxy-ethyl)-N,N-dimethyl ammonium chloride; N-hardenedtallowyl-N-(hardenedtallowoyl-oxy-ethyl)-N,N-dimethyl ammonium chloride; N,N-di(stearoyl-oxy-ethyl)-N-methyl, N-(2-hydroxyethyl) ammonium methylsulfate; N,N-di(hardenedtallowoyl-oxy-ethyl)-N-methyl, N-(2-hydroxyethyl) ammonium methylsulfate; 1,2-distearoyloxy-3-N,N,N-trimethylammoniumpropane chloride and 1,2-hardenedtallowoyloxy-3-N,N,N-trimethylammoniumpropane chloride.  
   
   
       10 . The composition of  claim 9  wherein said dialkyl quaternary ammonium compound is present at a level of from about 2% to about 25%, by weight of the composition.  
   
   
       11 . The composition of  claim 10  wherein said dialkyl quaternary ammonium compound is present at a level of from about 3% to about 20%, by weight of the composition.  
   
   
       12 . The composition of  claim 1  wherein said composition is a fabric softening composition.  
   
   
       13 . The composition of  claim 1  wherein said composition is a hard surface cleaning composition.  
   
   
       14 . The composition of  claim 1  wherein said composition is a hair conditioning composition.  
   
   
       15 . The composition of  claim 1  wherein said composition is an agrochemical composition.  
   
   
       16 . The composition of  claim 1  wherein said composition is a paint composition.  
   
   
       17 . A process for making a composition comprising vesicles having a vesicle permeability index of less than about 1.3 and water-soluble active material, said process comprising the steps of: 
 (a) providing a dialkyl quaternary ammonium compound having the formula:                          wherein R 1  and R 2  are independently C 12  to C20 saturated alkyl chains; Y is                          wherein R 4  is ethyl or isopropyl; R 3  and R 5  are independently methyl, ethyl, hydroxyethyl, or hydroxypropyl; m is 1, 2, or 3; n is 1 or 2; p is 0 or 1; and X −  is an anion;    (b) heating said dialkyl quaternary ammonium compound to a temperature above a transition temperature of said dialkyl quaternary ammonium compound;    (c) adding said water-soluble active material to said dialkyl quaternary ammonium compound to form a mixture; and    (d) dispersing said mixture into water having a temperature above a transition temperature of said dialkyl quaternary ammonium compound.