Gas-adsorbent propellant system

Claim 1

A propellant system comprising an aerosol-type container having a dispensing valve and containing a composition consisting essentially of a gas adsorbed on an adsorbent substrate at super-atmospheric pressure in sufficient quantity such that upon actuation of the dispensing valve, said substrate will desorb a portion of the adsorbed gas to permit discharge of the gas portion from the container at a pressure greater than atmospheric, wherein said gas does not contain any halogen atoms in its molecular structure wherein the initial pressure within the container is about 100 pounds per square inch gauge, and the substrate is capable of desorbing at least 5 grams of the gas per 100 grams of substrate for discharge from the container upon actuation of the dispensing valave and: (a) said gas is a member of the group consisting of carbon dioxide, nitrous oxide and mixtures thereof; and (b) said adsorbent substrate is a member of the group consisting of: (1) activated carbon; (2) silica gel; (3) molecular sieve materials having the general formula Na.sub.2 O.Al.sub.2 O.sub.3.(SiO.sub.2).sub.x.(H.sub.2 O).sub.y wherein x varies from 2 to 3, and y varies from 6.1 to 8.0.