Propellant free foamable toothpaste composition

Abstract

Propellant free foamable aqueous dentifrice system which is capable of being delivered as a foam to a toothbrush and which is stable on the brush and when placed in the mouth and used for tooth cleaning, continues to generate more foam. The system is liquid and as such can not be used without being foamed because it is so thin that it falls beneath the bristles of the toothbrush.

1 . A water based dentifrice suspension which is unusable on a toothbrush in an unfoamed state consisting essentially of 
 negatively charged fumed Silica,    positively charged fumed Aluminum Oxide,    hydrated Silica abrasive and    an anionic surfactant wherein said surfactant is other than Sodium Lauryl Sulfate, Sodium Lauryl Sulfoacetate an Acylglutamate or a Betaine,    said suspension being readily foamable from a non-propellant pump spray container wherein the thus produced foam is usable on a toothbrush in its foamed state as a dentifrice.    
   
   
       2 . The suspension of  claim 1  wherein the anionic surfactant is Sodium Lauroyl Sarcosinate.  
   
   
       3 . The suspension of  claim 1  additionally comprising a secondary surfactant selected from the group consisting of nonionic solid block polymer surfactants.  
   
   
       4 . The suspension of  claim 2  additionally comprising a secondary surfactant selected from the group consisting of nonionic solid block polymer surfactants.  
   
   
       5 . The suspension of  claim 4  wherein the secondary surfactant is Poloxamer 407® 
   
   
       6 . The suspension of  claim 3  additionally comprising an anti settling agent  
   
   
       7 . The suspension of  claim 6  wherein the anti settling agent is an inorganic colloidal Magnesium Aluminum Silicate.  
   
   
       8 . The suspension of  claim 3  additionally comprising a humectant.  
   
   
       9 . The suspension of  claim 6  additionally comprising a humectant.  
   
   
       10 . The suspension of  claim 8  wherein the humectant is selected from the group consisting of Sorbitol and Glycerin  
   
   
       11 . The suspension of  claim 1  comprising 
 from about 50 to about 85% by weight of water,    from about 1 to about 3% by weight of primary surfactant,    from about 1 to about 3% by weight of fumed silica,    from about 1 to about 3% by weight of fumed aluminum oxide,    from about 1 to about 10% by weight of hydrated silica.    
   
   
       12 . The suspension of  claim 11  additionally comprising from about 1 to about 4% by weight secondary surfactant.  
   
   
       13 . The suspension of  claim 12  wherein the size range of the hydrated silica is from about 10 to about 15 microns.  
   
   
       14 . The suspension of  claim 11  comprising from about 0.1 to about 2% by weight of anti settling agent.  
   
   
       15 . The suspension of  claim 11  comprising from about 20 to about 30% by weight of humectant.  
   
   
       16 . A foamed dentifrice delivery system consisting essentially of 
 a water based dentifrice suspension of  claim 1  and    a non-propellant pump spray dispenser comprising a container and pump activated foam dispensing means there from, that can readily foam the suspension such that it is usable on a toothbrush in its foamed state.    
   
   
       17 . A foamed dentifrice delivery system consisting essentially of 
 a water based dentifrice suspension of  claim 2     and    a non-propellant pump spray dispenser comprising a container and pump activated foam dispensing means there from, that can readily foam the suspension such that it is usable on a toothbrush in its foamed state.    
   
   
       18 . A foamed dentifrice delivery system consisting essentially of 
 a water based dentifrice suspension of  claim 4     and    a non-propellant pump spray dispenser comprising a container and pump activated foam dispensing means there from, that can readily foam the suspension such that it is usable on a toothbrush in its foamed state.    
   
   
       19 . A foamed dentifrice delivery system consisting essentially of 
 a water based dentifrice suspension of  claim 13     and    a non-propellant pump spray dispenser comprising a container and pump activated foam dispensing means there from, that can readily foam the suspension such that it is usable on a toothbrush in its foamed state.    
   
   
       20 . A foamed dentifrice delivery system consisting essentially of 
 a water based dentifrice suspension of  claim 14     and    a non-propellant pump spray dispenser comprising a container and pump activated foam dispensing means there from, that can readily foam the suspension such that it is usable on a toothbrush in its foamed state.    
   
   
       21 . A foamed dentifrice delivery system consisting essentially of 
 a water based dentifrice suspension of  claim 15     and    a non-propellant pump spray dispenser comprising a container and pump activated foam dispensing means there from, that can readily foam the suspension such that it is usable on a toothbrush in its foamed state.