Denture adhesives

Abstract

The disclosed technology provides improved adhesive composition of use with dentures. These improved compositions include (a) a cross linked poly(acrylic) acid polymer, in combination with (b) a carbomethylcellulose (CMC) component and/or (c) an adherence promoting component. The compositions balance the many competing goals for effective denture adhesives, including adhesive strength and dispensing viscosity, without the need for zinc.

1 . A denture adhesive composition comprising:
 (a) a cross-linked poly(acrylic) acid polymer; and   (b) an additional component comprising (i) a carboxymethylcellulose component; (ii) an adherence promoting component comprising sodium alginate, poly(ethylene) oxide, or a combination thereof; or (iii) both (i) and (ii);   wherein the weight ratio of component (b) to component (a) is from 5:1 to 1:5.   
     
     
         2 . The denture adhesive composition of  claim 1 , wherein the cross-linked poly(acrylic) acid polymer is a carbomer homopolymer, carbomer copolymer, carbomer interpolymer, polycarbophil or a mixture thereof. 
     
     
         3 . The denture adhesive composition of any of the  claim 1  wherein the cross-linked poly(acrylic) acid polymer comprises Carbopol® 971P NF, Carbopol® 974P NF, Carbopol Ultrez 10NF, Carbopol ETD 2020NF, Carbopol 980NF, Pemulen TR-1 or TR-2 NF or any combination thereof. 
     
     
         4 . The denture adhesive composition of  claim 3  wherein the cross-linked poly(acrylic) acid polymer comprises Carbopol® 974P NF. 
     
     
         5 . The denture adhesive composition of  claim 1  wherein the carboxymethylcellulose component comprises a sodium carboxymethylcellulose. 
     
     
         6 . The denture adhesive composition of  claim 1  wherein the carboxymethylcellulose component comprises a carboxymethylcellulose with seven degrees of substitution, a high viscosity grade, a viscosity of about 3000 cps viscosity, a smooth flow property, a fine particle size, and made to at least a food grade standard. 
     
     
         7 . The denture adhesive composition of  claim 1  wherein the carboxymethylcellulose component comprises Aqualon™ 7H3SF, Aqualon™ 7HF, Aqualon™ 7MF, Aqualon™ 9M31XF, Aqualon™ CMC 9M8F PH, or any combination thereof. 
     
     
         8 . The denture adhesive composition of  claim 1  wherein adherence promoting component comprises sodium alginate. 
     
     
         9 . The denture adhesive composition of  claim 1  wherein adherence promoting component comprises poly(ethylene) oxide. 
     
     
         10 . The denture adhesive composition of  claim 1  wherein the balance of the composition comprises a medium, where said medium comprises a mineral oil, petrolatum, or a mixture thereof. 
     
     
         11 . The denture adhesive composition of  claim 1  wherein the composition further comprises a medium, where said medium comprises a mineral oil, petrolatum, or a mixture thereof, and wherein the medium is present in an amount from about 14 to about 50 percent by weight. 
     
     
         12 . The denture adhesive composition of  claim 1  wherein the composition comprises components (a), (b)(i), and (b)(ii);
 wherein said cross-linked poly(acrylic) acid polymer of (a) comprises Carbopol® 971P NF; 
 wherein the carboxymethylcellulose component of (b)(i) comprises a sodium carboxymethylcellulose; 
 wherein the adherence promoting component of (b)(ii) comprises sodium alginate; and 
 wherein the composition further comprises a mineral oil, petrolatum, or a mixture thereof. 
 
     
     
         13 . The denture adhesive composition of  claim 1  wherein the composition comprises components (a) and (b)(ii);
 wherein said cross-linked poly(acrylic) acid polymer of (a) comprises Carbopol® 971P NF; 
 wherein the adherence promoting component of (b)(ii) comprises poly(ethylene) oxide; and 
 wherein the composition further comprises a mineral oil, petrolatum, or a mixture thereof. 
 
     
     
         14 . The denture adhesive composition of  claim 1  wherein the cross-linked poly(acrylic) acid polymer comprises Carbopol® 974P NF present in the overall composition at about 10 to about 14 percent by weight;
 wherein the carboxymethylcellulose component, when present, comprises a sodium carboxymethylcellulose present at about 18 to about 24 percent by weight; 
 wherein the adherence promoting component comprises sodium alginate or poly(ethylene) oxide and is present at about 18 to about 45 percent by weight; 
 wherein the composition further comprises a petrolatum present at about 30 to about 34 percent by weight; and 
 wherein the composition further comprises mineral oil present at about 12 to about 16 percent by weight. 
 
     
     
         15 . The denture adhesive composition of  claim 1  wherein the composition is free of alkyl vinyl ether-maleic copolymers and salts thereof; and
 wherein the composition is free of zinc.