Tissue products treated with a softening composition containing a layered polysiloxane micelle

Abstract

A tissue product having a softening composition applied to at least one side is generally disclosed. The softening composition includes a polysiloxane micelle having a core polysiloxane and an outer layer polysiloxane. The core polysiloxane is more hydrophobic than the outer layer polysiloxane. In one embodiment, the core polysiloxane is an amino-functional polysiloxane, and the outer layer polysiloxane is a polyether polysiloxane. The softening composition can also contain other optional ingredients, such as surfactants and beneficial agents.

1 . A tissue product comprising:
 at least one tissue web containing pulp fibers, the tissue product having a first side and a second-side;   a softening composition applied to at least one side of the tissue product, the softening composition comprising a polysiloxane micelle, said polysiloxane micelle comprising a core polysiloxane and an outer layer polysiloxane, wherein said core polysiloxane is more hydrophobic than said outer layer polysiloxane.   
     
     
         2 . A tissue product as in  claim 1 , wherein said core polysiloxane comprises an amino-functional polysiloxane having the following structure: 
       
         
           
           
               
               
           
         
         wherein, 
         m is 10 to 100,000; 
         n is 1 to 5,000; 
         G 1  is R 8  or R 10 —[X—R 11 ] s —Y—R 12 ; 
         G 2  are independently R 9 , a hydroxyl radical, an alkoxyl radical, or R 10 —[X—R 11 ] s —Y—R 12 ; 
         R 1  through R 9  are independently selected from the group consisting of C 1  to C 8  substituted or unsubstituted, aliphatic or aromatic alkyl radicals; 
         R 10  and R 11  are independently a substituted or unsubstituted C 2  to C 6  alkylene diradical; 
         X and Y are independently a NR 13  diradical; 
         R 12  and R 13  are independently a hydrogen or a substituted or unsubstituted C 1  to C 20  alkyl radical; and 
         S is 0 or 1. 
       
     
     
         3 . A tissue product as defined in  claim 1 , wherein the softening composition has been applied to both sides of the tissue product, and wherein the polysiloxane micelle is applied to the tissue product at a total add-on level of from about 0.25% to about 8% by weight. 
     
     
         4 . A tissue product as defined in  claim 3 , wherein the polysiloxane micelle is applied to the tissue product at a total add-on level of from about 0.5% to about 5% by weight. 
     
     
         5 . A tissue product as defined in  claim 3 , wherein the softening composition is applied to each side of the tissue product so as to cover from about 40% to about 95% of the surface area of each side of the product. 
     
     
         6 . A tissue product as defined in  claim 1 , wherein said core polysiloxane comprises an amino-functional polysiloxane selected from the group consisting of 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         7 . A tissue product as in  claim 1 , wherein said outer layer polysiloxane comprises a polyether polysiloxane. 
     
     
         8 . A tissue product as in  claim 7 , wherein said core polysiloxane comprises an amino-functional polysiloxane. 
     
     
         9 . A tissue product as in  claim 7 , wherein said outer layer polysiloxane has the following structure: 
       
         
           
           
               
               
           
         
       
       wherein, x and z are integers >0, y is an integer ≧0; the mole ratio of x to (x+y+z) is from about 0.05 percent to about 95 percent; the ratio of y to (x+y+z) is from about 0 percent to about 25%; the R 0 -R 9  moieties are independently selected from the organofunctional group consisting of C 1  or higher alkyl groups, ethers, polyethers, polyesters, amines, imines, amides, and alkyl and alkenyl analogues of such groups; the R 10  moiety is an amino functional moiety; R 11  is a polyether functional group having the generic formula: R 12 —(R 13 —O) a —(R 14 O) b —R 15 , wherein R 12 , R 13 , and R 14  are independently C 1-4 alkyl groups, linear or branched; R 15  is H or a C 1-30  alkyl group; and, “a” and “b” are integers of from about 1 to about 100. 
     
     
         10 . A tissue product as in  claim 7 , wherein said outer layer polysiloxane has the following structure: 
       
         
           
           
               
               
           
         
       
       wherein x is an integer from 40 to 150; y is an integer from 1 to 5; z is an integer from 1 to 5; n is an integer from 10 to 30; and m is an integer from 10 to 30. 
     
     
         11 . A tissue product as in  claim 1 , wherein said softening composition further comprises at least one beneficial agent. 
     
     
         12 . A tissue product comprising:
 at least one tissue web containing pulp fibers, the tissue product having a first side and a second side;   a softening composition applied to at least one side of the tissue product, the softening composition comprising a polysiloxane micelle and a surfactant, said polysiloxane micelle comprising a core polysiloxane and an outer layer polysiloxane, wherein said core polysiloxane comprises an amino-functional polysiloxane having the following structure:   
       
         
           
           
               
               
           
         
       
       wherein, m is 10 to 100,000; n is 1 to 5,000; G 1  is R 8  or R 10 —[X—R 11 ] s —Y—R 12 ; G 2  are independently R 9 , a hydroxyl radical, an alkoxyl radical, or R 10 —[X—R 11 ] 9 —Y—R 12 ; R 1  through R 9  are independently selected from the group consisting of C 1  to C 8  substituted or unsubstituted, aliphatic or aromatic alkyl radicals; R 10  and R 11  are independently a substituted or unsubstituted C 2  to C 6  alkylene diradical; X and Y are independently a NR 13  diradical; R 12  and R 13  are independently a hydrogen or a substituted or unsubstituted C 1  to C 20  alkyl radical; and S is 0 or 1; and
 wherein said outer layer polysiloxane has the following structure: 
 
       
         
           
           
               
               
           
         
       
       wherein, x and z are integers >0, y is an integer ≧0; the mole ratio of x to (x+y+z) is from about 0.05 percent to about 95 percent; the ratio of y to (x+y+z) is from about 0 percent to about 25%; the R 0 -R 9  moieties are independently selected from the organofunctional group consisting of C 1  or higher alkyl groups, ethers, polyethers, polyesters, amines, imines, amides, and alkyl and alkenyl analogues of such groups; the R 10  moiety is an amino functional moiety; R 11  is a polyether functional group having the generic formula: R 12 —(R 13 —O) a —(R 14 ) b —R 15  wherein R 12 , R 13 , and R 14  are independently C 1-4  alkyl groups, linear or branched; R 15  is H or a C 1-30  alkyl group; and, “a” and “b” are integers of from about 1 to about 100. 
     
     
         13 . A tissue product as in  claim 12 , wherein said outer layer polysiloxane has the following structure: 
       
         
           
           
               
               
           
         
       
       wherein x is an integer from 40 to 150; y is an integer from 1 to 5; z is an integer from 1 to 5; n is an integer from 10 to 30; and m is an integer from 10 to 30. 
     
     
         14 . A tissue product as in  claim 12 , wherein said core polysiloxane comprises an amino-functional polysiloxane selected from the group consisting of 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         15 . A method of making a tissue product comprising
 forming a tissue web containing pulp fibers, the tissue product having a first side and a second side;   applying a softening composition to at least one side of the tissue product, the softening composition comprising a polysiloxane micelle, said polysiloxane micelle comprising a core polysiloxane and an outer layer polysiloxane, wherein said core polysiloxane is more hydrophobic than said outer layer polysiloxane.   
     
     
         16 . A method as in  claim 15 , wherein said core polysiloxane comprises an amino-functional polysiloxane having the following structure: 
       
         
           
           
               
               
           
         
         wherein, 
         m is 10 to 100,000; 
         n is 1 to 5,000; 
         G 1  is R 8  or R 10 —[X—R 11 ] s —Y—R 12 ; 
         G 2  are independently R 9 , a hydroxyl radical, an alkoxyl radical, or R 10 —[X—R 1 ] s —Y—R 12 ; 
         R 1  through R 9  are independently selected from the group consisting of C 1  to C 8  substituted or unsubstituted, aliphatic or aromatic alkyl radicals; 
         R 10  and R 11  are independently a substituted or unsubstituted C 2  to C 6  alkylene diradical; 
         X and Y are independently a NR 13  diradical; 
         R 12  and R 13  are independently a hydrogen or a substituted or unsubstituted C 1  to C 20  alkyl radical; and 
         S is 0 or 1. 
       
     
     
         17 . A method as in  claim 15 , wherein the softening composition has been applied to both sides of the tissue product, the softening composition being applied to the tissue product such that the total solids add-on is from about 0.5% to about 5% by weight. 
     
     
         18 . A method as in  claim 15 , wherein the softening composition is applied to each side of the tissue product so as to cover from about 40% to about 95% of the surface area of each side of the product. 
     
     
         19 . A method as in  claim 15 , wherein said core polysiloxane comprises an amino-functional polysiloxane selected from the group consisting of 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         20 . A method as in  claim 15 , wherein said outer layer polysiloxane comprises a polyether polysiloxane. 
     
     
         21 . A method as in  claim 20 , wherein said core polysiloxane comprises a amino-functional polysiloxane. 
     
     
         22 . A method as in  claim 15 , wherein said outer layer polysiloxane has the following structure: 
       
         
           
           
               
               
           
         
       
       wherein, x and z are integers >0, y is an integer ≧0; the mole ratio of x to (x+y+z) is from about 0.05 percent to about 95 percent; the ratio of y to (x+y+z) is from about 0 percent to about 25%; the R 0 -R 9  moieties are independently selected from the organofunctional group consisting of C 1  or higher alkyl groups, ethers, polyethers, polyesters, amines, imines, amides, and alkyl and alkenyl analogues of such groups; the R 10  moiety is an amino functional moiety; R 11  is a polyether functional group having the generic formula: R 12 —(R 13 —O) a —(R 14 O) b —R 15 , wherein R 12 , R 13 , and R 14  are independently C 1-4  alkyl groups, linear or branched; R 15  is H or a C 1-30  alkyl group; and, “a” and “b” are integers of from about 1 to about 100. 
     
     
         23 . A method as in  claim 15 , wherein said outer layer polysiloxane has the following structure: 
       
         
           
           
               
               
           
         
       
       wherein x is an integer from 40 to 150; y is an integer from 1 to 5; z is an integer from 1 to 5; n is an integer from 10 to 30; and m is an integer from 10 to 30. 
     
     
         24 . A method as in  claim 15 , wherein the softening composition further comprises at least one beneficial agent. 
     
     
         25 . A method as in  claim 15 , wherein the softening composition further comprises a surfactant.