Water and oil repellent porous particles and methods for making the same
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United States of America Patent
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app pub date -
Aug 12, 2003
filing date -
Mar 6, 2000
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Abstract
This invention relates to a hydrophobic and oleophobic porous materials and processes for making the same. In a first process of the invention, a thermoplastic substrate is at least partially coated and/or impregnated with a surface treatment material. In a second process of the invention, thermoplastic particles which comprise a surface treatment material are sintered together. Preferred surface treatment materials are fluorochemicals.
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