PROCESS OF PREPARING GEL

摘要

A gel containing a volatile liquid to be released into an atmosphere is produced by blending a polymeric component and a cross-linking agent therefor ("the gel components") and a volatile liquid, all or part of which liquid is inherently reactive with at least one of the gel components ("the reactive component"). At least the major portion of the reactive component is incorporated into the gel in the form of a solution in an organic solvent. Any minor portion of reactive component, plus any non-reactive component, of the volatile liquid is premixed into at least one of the gel components, such that the minor reactive component is premixed into that gel component with which it reacts less. For complex volatile liquids, such as fragrances, the method allows the easy provision of gels with a hitherto unattainable wide range of liquids.