Polymeric foam caulking compositions
OwnerEdward H. Page, Frank Scottiinventors
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Abstract
This invention concerns sprayable emulsions of a foamable polymer in water which are useful as aerosol caulking or insulating compositions.
Claims33
A composition suitable for preparing a stable, cellular foam adapted to be dispensed from an aerosol container and maintained under pressure in a container having a value member associated with the container adaptable for continuous dispensing of the contents of the container, the composition comprising an aqueous emulsion of one or more foamable polymers, filler, a propellent amount of dimethyl ether and a volatile organic liquid compound selected from the group consisting of a volatile hydrocarbon, a volatile halogenated hydrocarbon, and mixtures thereof, wherein the foamable polymers have glass transition temperatures of less than about 15.degree. C. and wherein the foamable polymers are emulsified by a nonionic surfactant having an HLB value of greater than about 15;
- wherein the ratio of the weight percent of the dimethyl ether to the organic liquid compound is about 9-90:1, and wherein the foam is self-leveling, water resistant, and the volume of the foam is not greater than about six times the volume of said composition.
An aerosol container containing therein a dispensable composition comprising one or more foamable polymers having glass transition temperatures of less than about 15.degree. C. emulsified in an aqueous solution of dimethyl ether, wherein said polymers are emulsified by a nonionic surfactant having an HLB value of at least about 15;
- filler, and dispersed in said emulsion a volatile organic liquid compound selected from the group consisting of a volatile hydrocarbon, a volatile halogenated hydrocarbon, and mixtures thereof, wherein the ratio of the weight percent of the dimethyl ether to the organic liquid compound is about 8-90:1, and said composition being under dimethyl ether and organic liquid gas propellant pressure in said dispenser sufficient to propel said composition from said dispenser and to foam said composition to form a self-levelling, water-resistant foam having a volume not greater than six times the volume of said composition.
Dependencies are inferred from the claim text.