Composition and method of producing personal care compositions with improved deposition properties

Abstract

The presently disclosed and/or claimed inventive concept(s) relates generally to the use of nonionic hydrophobically modified polysaccharides in personal care and household care compositions. More specifically, but not by way of limitation, the presently disclosed and/or claimed inventive concept(s) relates to the use of hydrophobically-modified cellulose ethers, such as hydrophobically-modified hydroxyethylcellulose (HMHEC) polymers in personal care and household care compositions. These compositions show pronounced syneresis in aqueous solutions or in the presence of surfactants, including nonionic surfactants and anionic surfactants such as lauryl sulfate (LS) and lauryl ether sulfate (LES). It is also contemplated that the surfactants used in the compositions be sulfate free and/or multi-tailed.

1 - 90 . (canceled) 
     
     
         91 . A composition for conditioning a functional system substrate comprising an aqueous solution, comprising:
 a. at least one surfactant comprising a surfactant selected from the group consisting of a multi-tail surfactant, a sulfate-free surfactant, and combinations thereof;   b. at least one functional system active ingredient; and   c. a nonionic hydrophobically modified cellulose ether having a weight average molecular weight of from 100,000 to 2,000,000, and is hydrophobically substituted,
 wherein the amount of the hydrophobic substitution of the nonionic hydrophobically modified cellulose ether is in a range from a lower limit of 0.8 weight percent to an upper limit rendering the nonionic hydrophobically modified cellulose ether soluble in a five weight percent solution of surfactant, and at least one of (1) less than 0.5 percent by weight soluble in water, and (2) less than 0.05 percent by weight soluble in a one percent surfactant solution, 
   
       wherein upon diluting the aqueous solution with water, the aqueous solution undergoes syneresis, whereby the nonionic hydrophobically modified cellulose ether separates from the aqueous solution and deposits upon the functional system substrate. 
     
     
         92 . The composition of  claim 91 , wherein the upper limit of the weight average molecular weight of the nonionic hydrophobically modified cellulose ether is selected from the group consisting of 1,500,000 and 1,000,000. 
     
     
         93 . The composition of  claim 91 , wherein the lower limit of the weight average molecular weight of the nonionic hydrophobically modified cellulose ether is selected from the group consisting of 200,000 and 600,000. 
     
     
         94 . The composition of  claim 91 , wherein the nonionic hydrophobically modified cellulose ether has a hydrophobic moiety selected from the group consisting of alkyl, aryl, alkyl aryl, aryl alkyl, and combinations thereof. 
     
     
         95 . The composition of  claim 94 , wherein the hydrophobic moiety is an alkyl having less than or equal to 12 carbons. 
     
     
         96 . The composition of  claim 94 , wherein the hydrophobic moiety is selected from the group consisting of cetyl, octyl, and butyl. 
     
     
         97 . The composition of  claim 94 , wherein the hydrophobic moiety is 3-alkoxy-2-hydroxypropyl. 
     
     
         98 . The composition of  claim 91 , wherein the nonionic hydrophobically modified cellulose ether has a backbone selected from the group consisting of hydroxyethylcellulose, hydroxypropylcellulose, ethyl hydroxyethylcellulose, methyl hydroxyethylcellulose, hydroxypropylmethylcellulose, hydroxypropylhydroxyethylcellulose, ethyl hydroxypropylcellulose, and methylcellulose. 
     
     
         99 . The composition of  claim 94 , wherein the nonionic hydrophobically modified cellulose ether has a hydrophobic moiety attached to the backbone via an ether, ester, or urethane linkage. 
     
     
         100 . The composition of  claim 91 , wherein the functional system substrate is selected from the group consisting of skin, hair, teeth, mucous membranes, textiles, and hard surface cleaner products. 
     
     
         101 . The composition of  claim 91 , wherein the at least one surfactant is selected from the group consisting of anionic, nonionic, zwitterionic, and amphoteric surfactants. 
     
     
         102 . The composition of  claim 101 , wherein the at least one surfactant is present in an amount ranging from 0.01 to 50 weight percent. 
     
     
         103 . The composition of  claim 91 , wherein the aqueous solution further comprises at least one single tail surfactant. 
     
     
         104 . The composition of  claim 103 , wherein the single tail surfactant is selected from the group consisting of anionic, nonionic, zwitterionic, and amphoteric surfactants. 
     
     
         105 . The composition of  claim 104 , wherein the single tail surfactant is present in an amount ranging from 0.01 to 50 weight percent. 
     
     
         106 . The composition of  claim 91 , wherein the sulfate-free surfactant is a single tail surfactant. 
     
     
         107 . The composition of  claim 91 , wherein the aqueous solution further comprises a solvent selected from the group consisting of water-lower alkanols mixtures and polyhydric alcohols having 3 to 6 carbons and 2 to 6 hydroxyl groups. 
     
     
         108 . The composition of  claim 91 , wherein the aqueous solution further comprises sodium chloride. 
     
     
         109 . The composition of  claim 108 , wherein the sodium chloride is present in an amount ranging from 0.1 to 5 weight percent. 
     
     
         110 . The composition of  claim 91 , wherein the at least one functional system active ingredient is selected from the group consisting of perfumes, skin coolants, emollients, moisturizers, deodorants, antiperspirants, moisturizing agents, cleansers, sunscreens, hair treatment agents, oral care agents, denture adhesive agents, conditioning agents, shaving agents, beauty aids, personal care agents, and nail care agents. 
     
     
         111 . The composition of  claim 110 , wherein the at least one functional system active ingredient is selected from the group consisting of oil-in-water emulsions, water-in-oil emulsions, solutions, slurries, dispersions, suspensions, and combinations thereof.