| abstract |
Disclosed herein are various coatable films which have entrapped within their polymeric matrix minute droplets of a liquid nonsolvent. The polymeric matrix and non-solvent are chosen such that there is effected about the film a controlled release of the non-solvent from the film. Utility lies in choosing the nonsolvent so that it comprises substances such as perfumes, deodorants, air fresheners, medicines, pesticides, corrosion inhibitors, fungicides, etc. The atmospheres generated are thus used to supply the various substances to a needy environment. |