Cationic Surfactant Systems Comprising Microfibrous Cellulose

Abstract

Cationic surfactant systems, using microfibrous cellulose to suspend particulates therein, are described. Methods of making these systems are also described.

18 . An aqueous composition comprising a cationic surfactant system comprising (i) microfibrous cellulose at a concentration of about 0.05% to about 1.0% (w/w), (ii) at least one cationic surfactant at a concentration of about 0.05% to about 40% (w/w active surfactant), and (iii) a suspended particulate. 
     
     
         19 . The composition of  claim 18 , wherein the microfibrous cellulose concentration is about 0.05% to about 0.09%. 
     
     
         20 . The composition of  claim 18 , wherein the microfibrous cellulose concentration is about 0.05% to about 0.075%. 
     
     
         21 . The composition of  claim 18 , wherein the cationic surfactant concentration is about 0.5% to about 3% (w/w active surfactant). 
     
     
         22 . The composition of  claim 18 , wherein the cationic surfactant concentration is about 3% to about 15% (w/w active surfactant). 
     
     
         23 . The composition of  claim 18 , wherein the composition is substantially transparent. 
     
     
         24 . The composition of  claim 18 , wherein the microfibrous cellulose comprises a microfibrous cellulose blend of microfibrous cellulose, cationic guar, and guar at a ratio of 6:3:1. 
     
     
         25 . The composition of  claim 18 , wherein the microfibrous cellulose comprises a microfibrous cellulose blend of microfibrous cellulose and cationic guar at a ratio of 1:1 or 3:2. 
     
     
         26 . The composition of  claim 18 , wherein the microfibrous cellulose comprises a microfibrous cellulose blend of microfibrous cellulose and cationic hydroxyethylcellulose at a ratio of 1:1. 
     
     
         27 . An aqueous composition comprising a cationic surfactant system comprising (i) microfibrous cellulose at a concentration of about 0.05% to about 1.0% (w/w), (ii) at least one cationic surfactant at a concentration of about 0.05% to about 40% (w/w active surfactant), and (iii) a suspended particulate, wherein the aqueous composition is prepared by a method comprising the steps of:
 combining the microfibrous cellulose with water and mixing with high shear,   adding the cationic surfactant and then mixing, and   adding the particulate followed by mixing.   
     
     
         28 . The composition of  claim 27 , wherein the microfibrous cellulose comprises a dry blend of microfibrous cellulose and one or more co-agents. 
     
     
         29 . The composition of  claim 28 , wherein the microfibrous cellulose blend comprises microfibrous cellulose, cationic guar, and guar at a ratio of 6:3:1. 
     
     
         30 . The composition of  claim 28 , wherein the microfibrous cellulose blend comprises microfibrous cellulose and cationic guar at a ratio of 1:1 or 3:2. 
     
     
         31 . The composition of  claim 28 , wherein the microfibrous cellulose blend comprises microfibrous cellulose and cationic hydroxyethylcellulose at a ratio of 1:1. 
     
     
         32 . The composition of  claim 28 , wherein the microfibrous cellulose comprises a wet cake of microfibrous cellulose and the cationic surfactant system is substantially free of co-agents. 
     
     
         33 . Method of preparing an aqueous composition comprising a cationic surfactant system, comprising:
 combining microfibrous cellulose with water and mixing with high shear,   adding cationic surfactant and then mixing, and   adding a particulate followed by mixing,   wherein the resulting system is clear and the particulates are suspended therein and wherein the microfibrous cellulose is present at a concentration of about 0.05% to about 0.1% (w/w) and the cationic surfactant is present at a concentration of about 0.05% to about 40% (w/w active surfactant).   
     
     
         34 . The method of  claim 33 , wherein the microfibrous cellulose comprises a dry blend of microfibrous cellulose and one or more co-agents. 
     
     
         35 . The method of  claim 34 , wherein the microfibrous cellulose blend comprises microfibrous cellulose, cationic guar, and guar at a ratio of 6:3:1. 
     
     
         36 . The method of  claim 34 , wherein the microfibrous cellulose blend comprises microfibrous cellulose and cationic guar at a ratio of 1:1 or 3:2. 
     
     
         37 . The method of  claim 34 , wherein the microfibrous cellulose blend comprises microfibrous cellulose and cationic hydroxyethylcellulose at a ratio of 1:1. 
     
     
         38 . The method of  claim 33 , wherein the microfibrous cellulose comprises a wet cake of microfibrous cellulose and the cationic surfactant system is substantially free of co-agents.