Methods for reducing seepage from wick-based controlled release devices, and wick-based devices having reduced seepage

−4 Methods and devices include having a container for holding a liquid with a viscosity μ, and a porous wick with an average pore size of at least about 4 microns to about 50 microns and a porosity ε between about 0.20 to about 0.75, and having a length L and a total exposed surface area A exposed t...

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Hauptverfasser: Varanasi, Padma Prabodh, Adair, Joel E
Format: Patent
Sprache:eng
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Zusammenfassung:−4 Methods and devices include having a container for holding a liquid with a viscosity μ, and a porous wick with an average pore size of at least about 4 microns to about 50 microns and a porosity ε between about 0.20 to about 0.75, and having a length L and a total exposed surface area A exposed to the ambient air. The viscosity of the liquid and the dimensions of the wick are such that a quantity A/μL is in a range of about 4×10to about 18 cm/poise.