Compositions and methods for treating tissue products

Abstract

Compositions and colloidal particles are provided that may be used to improve a tissue making process. The compositions and colloidal particles may include a polymer and an inorganic salt. A tissue making process carried out using the presently disclosed compositions and colloidal particles may produce a tissue product that has high tensile strength and high softness without using either softeners or debonders.

What is claimed is: 
     
         1 . A method of increasing the softness and strength of a tissue product, comprising:
 adding a composition to a tissue making machine, wherein the composition comprises a colloidal particle, the colloidal particle comprising a polymer embedded within a colloidal aluminum hydroxide complex and/or a colloidal ferric hydroxide complex, wherein the polymer comprises a cationic charge density of about −1.0 meq/g to about 8.5 meq/g.   
     
     
         2 . The method of  claim 1 , further comprising adding the composition to a tissue making process water in the tissue making machine. 
     
     
         3 . The method of  claim 2 , wherein a thin stock, a thick stock, and/or a headbox comprises the tissue making process water. 
     
     
         4 . The method of  claim 1 , wherein the polymer comprises a monomer selected from the group consisting of an anionic monomer, a cationic monomer, a non-ionic monomer, a zwitterionic monomer, and any combination thereof. 
     
     
         5 . The method of  claim 1 , wherein the polymer comprises about 0 mol % to about 20 mol % DMAEA.MCQ, about 1 mol % to about 10 mol % of acrylic acid, and about 85 mol % to about 90 mol % of acrylamide. 
     
     
         6 . The method of  claim 1 , wherein the composition is an aqueous composition comprising a pH from about 2 to about 8.5. 
     
     
         7 . The method of  claim 1 , wherein the polymer comprises a carboxylic acid. 
     
     
         8 . The method of  claim 1 , wherein the polymer comprises a cationic charge density of about 1.0 meq/g to about 3.0 meq/g. 
     
     
         9 . A method of increasing the softness and strength of a tissue product, comprising:
 adding a polymer to a tissue making process water,   adding an aluminum salt and/or a ferric salt to the tissue making process water,   and forming a colloidal particle in the tissue making process water, wherein the colloidal particle comprises the polymer embedded within a colloidal aluminum hydroxide complex and/or a colloidal ferric hydroxide complex, wherein the polymer comprises a cationic charge density of about −1.0 meq/g to about 8.5 meq/g.   
     
     
         10 . The method of  claim 9 , further comprising co-feeding the polymer and the aluminum salt and/or the ferric salt into the tissue making process water. 
     
     
         11 . The method of  claim 9 , wherein the aluminum salt is selected from the group consisting of aluminum chloride, aluminum chloride hydrate, aluminum sulfate, alum, PAC, aluminum chlorohydrate, a compound having the formula Al n Cl (3n-m) (OH) m , wherein m is an integer from 0-100, n is an integer from 1-100, and m is less than 3n, and any combination thereof. 
     
     
         12 . The method of  claim 9 , wherein a thin stock, a thick stock, and/or a headbox comprises the tissue making process water. 
     
     
         13 . The method of  claim 9 , wherein the polymer comprises a monomer selected from the group consisting of an anionic monomer, a cationic monomer, a non-ionic monomer, a zwitterionic monomer, and any combination thereof. 
     
     
         14 . The method of  claim 9 , wherein the polymer comprises a carboxylic acid. 
     
     
         15 . The method of  claim 9 , wherein a composition comprises the polymer and the ferric salt and/or aluminum salt. 
     
     
         16 . The method of  claim 15 , wherein the composition comprises a weight ratio of the aluminum salt and/or the ferric salt to the polymer from about 0.05:1 to 100:1. 
     
     
         17 . The method of  claim 9 , wherein the polymer comprises a cationic charge density of about 1.0 meq/g to about 3.0 meq/g. 
     
     
         18 . A composition, comprising:
 a colloidal particle, the colloidal particle comprising a polymer embedded within a colloidal aluminum hydroxide complex and/or a colloidal ferric hydroxide complex, wherein the polymer comprises a cationic charge density of about −1.0 meq/g to about 8.5 meq/g.   
     
     
         19 . The composition of  claim 18 , wherein the polymer comprises about 0 mol % to about 20 mol % DMAEA.MCQ, about 1 mol % to about 10 mol % of acrylic acid, and about 85 mol % to about 90 mol % of acrylamide. 
     
     
         20 . The composition of  claim 18 , wherein the polymer comprises a cationic charge density of about 1.0 meq/g to about 3.0 meq/g.