Compositions – Electrically conductive or emissive compositions – Metal compound containing
Patent
1984-08-03
1987-05-12
Sneed, Helen M. S.
Compositions
Electrically conductive or emissive compositions
Metal compound containing
252 86, 252522R, 424 40, A61K 746, C11B 900
Patent
active
046648470
ABSTRACT:
A hydrophilic monomer such as hydroxypropyl methacrylate and a lipophilic monomer such as lauryl methacrylate are copolymerized in the presence of a fragrance or other volatile active ingredient. The resulting polymer contains entrapped active ingredient which tends not to exude from the polymer during storage yet is gradually released as vapor when the polymer is exposed to the atmosphere, e.g. as an air-freshener.
REFERENCES:
patent: 3567118 (1971-03-01), Shepherd et al.
patent: 3681248 (1972-08-01), Gould et al.
patent: 3966902 (1976-06-01), Chromecek
Hydro Optics, Inc.
Sneed Helen M. S.
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