Pressurized spray systems using carbon dioxide

Abstract

A pressurized spray system is disclosed which includes a sealed container and an aqueous composition disposed inside the sealed container. The aqueous composition includes an amine solubilizer, and solubilized and gaseous carbon dioxide. Aerosol paint products and methods of making such systems and products are also disclosed.

What is claimed is: 
     
         1 . A pressurized spray system comprising:
 a sealed container; and   an aqueous composition disposed within the sealed container, the composition comprising:
 a solubilizer comprising one or more of a primary amine, a secondary amine, and a tertiary amine; and 
 solubilized carbon dioxide and gaseous carbon dioxide, wherein the solubilized carbon dioxide is in equilibrium with the gaseous carbon dioxide. 
   
     
     
         2 . The pressurized spray system of  claim 1 , wherein the solubilizer comprises one or more of triethanolamine, diethanolamine, and monoethanolamine. 
     
     
         3 . The pressurized spray system of  claim 1 , wherein the solubilizer is a liquid at temperatures of about 10° C. to about 30° C. 
     
     
         4 . The pressurized spray system of  claim 1 , wherein the solubilizer has a water solubility of at least about 10 g/L at 20° C. 
     
     
         5 . The pressurized spray system of  claim 1 , wherein the solubilizer is modified by a silane treatment agent. 
     
     
         6 . The pressurized spray system of  claim 1 , wherein the aqueous composition comprises about 2% or less of the solubilizer. 
     
     
         7 . The pressurized spray system of  claim 1 , wherein the aqueous composition comprises about 1% to about 10%, by weight, carbon dioxide. 
     
     
         8 . The pressurized spray system of  claim 1 , wherein the aqueous composition comprises about 2% to about 3%, by weight, carbon dioxide. 
     
     
         9 . The pressurized spray system of  claim 1 , further comprising a benefit agent, and wherein the benefit agent comprises a water-based paint. 
     
     
         10 . The pressurized spray system of  claim 9 , wherein the water-based paint comprises one or more of a styrene acrylic latex paint, vinyl acrylic latex paint, ethylene vinyl acetate latex paint, and a polyurethane dispersion paint. 
     
     
         11 . The pressurized spray system of  claim 1 , further comprising one or more of a rheology modifier, a defoamer, a flow and leveling additive, and a filler. 
     
     
         12 . The pressurized spray system of  claim 1 , further comprising about 1% to about 20%, by weight, of a secondary propellant comprising dimethyl ether. 
     
     
         13 . The pressurized spray system of  claim 1 , further comprising about 0.03% to about 1.5%, by weight, of ammonium hydroxide. 
     
     
         14 . The pressurized spray system of  claim 1 , wherein the aqueous composition comprises about 5% to about 50% water. 
     
     
         15 . A method of forming a pressurized spray system comprising:
 adding a solubilizer to water to form a propellant mixture, wherein the solubilizer comprises one or more of a primary amine, a secondary amine, and a tertiary amine;   sealing the propellant mixture inside a sealed container; and   pressurizing the sealed container by adding carbon dioxide to the sealed container at a pressure of about 100 pounds per square inch (“psi”) to about 140 psi.   
     
     
         16 . The method of  claim 15 , wherein the solubilizer comprises one or more of a primary amine, a secondary amine, and a tertiary amine. 
     
     
         17 . The method of  claim 15 , wherein the contents of the sealed container comprise about 1% to about 10%, by weight, carbon dioxide. 
     
     
         18 . The method of  claim 15 , further comprising the step of including a benefit agent in the sealed container, and wherein the benefit agent is a latex paint. 
     
     
         19 . The method of  claim 15 , further comprising the step of adding one or more of a rheology modifier, a defoamer, a flow and leveling additive, and a filler to the sealed container. 
     
     
         20 . An aerosol paint product comprising:
 a sealed container comprising a can, a valve cup with a valve assembly, a dip tube, and an actuator; and   a propellant mixture and a water-based paint composition disposed within the sealed container; wherein the propellant mixture comprises water, a solubilizer, and carbon dioxide, and wherein the solubilizer comprises one or more of a primary amine, a secondary amine, and a tertiary amine.