Article for controlled and substantially uniform release of a volatile organic substance
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United States of America Patent
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Apr 30, 2002
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N/A
app pub date -
Jun 8, 2000
filing date -
Jun 18, 1999
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Abstract
An article for controlled and substantially uniform release of a volatile active organic substance into the surrounding atmosphere includes a silicone elastomer matrix of desired shape in which are dispersed the volatile substance and an effective amount of an agent for compatibilizing the volatile substance and the silicone elastomer of the matrix. The compatibilizer is an organic solvent with a Hildebrandt solubility parameter from 8 (cal/cm.sup.3).sup.1/2 to 14 (cal/cm.sup.3).sup.1/2 and a vapor pressure from 0.0005 mm to 0.8 mm of mercury (0.06 Pa to 105 Pa) at 20.degree. C.
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