| 摘要 |
<p>A gas generator particularly useful as a component in a fluid dispensing apparatus. The generator produces gas at a relatively constant rate and, in a preferred embodiment, at a rate which has a reduced dependence on ambient temperature. The gas generator comprises a liquid and a solid composition. The solid composition may be a first reagent dispersed in an inert solid or may consist essentially of the first reagent. In either case the solid composition, following contact with the liquid, reacts to generate a gas for at least about 20 hours during which at any elapsed time, t, of the reaction V = Y'tm where V = volume of gas produced as measured at constant temperature and pressure; Y = a rate constant related to the rate of reaction; m = any value between about 0.5 to about 1.3 when the temperature is constant. Preferably, the reaction has an m value within the foregoing range when the temperature is constant at some value within the range of about -30 °C to about 40 °C. The reaction is also preferably selected such that the apparent activation energy is no greater than about 40 kJ/mole, and preferably no greater than about 30 kJ/mole.</p> |
