Drug – bio-affecting and body treating compositions – Effervescent or pressurized fluid containing – Organic pressurized fluid
Patent
1991-12-18
1994-03-01
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Effervescent or pressurized fluid containing
Organic pressurized fluid
2224022, 22240224, B65D 8314, C08F 1014, A61K 912
Patent
active
052905390
ABSTRACT:
A device for delivering an aerosol, comprising: a casing member, a valve stem, and a diaphragm, wherein the diaphragm comprises a thermoplastic elastomer comprising a ethylene/1-butene copolymer. Also disclosed are sealing members comprising such an elastomer and thermoplastic polymer blends, e.g., for use in sealing members of the invention. The devices of the invention are particularly useful with formulations containing 1,1,1,2-tetrafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane as the propellant.
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Griswold Gary L.
Hulina Amy
Kirn Walter N.
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Page Thurman K.
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