METHODS AND FORMULATIONS FOR DURABLE SUPERHYDROPHIC, SELF-CLEANING, AND SUPERHYDROPHOBIC POLYMER COATINGS AND OBJECTS HAVING COATINGS THEREON
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United States of America Patent
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Issued Date -
Feb 9, 2017
app pub date -
Apr 17, 2015
filing date -
Apr 18, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An object has a durable superhydrophic, self-cleaning, and icephobic coating includes a substrate and a layer disposed on the substrate, the layer resulting from coating with a formulation having an effective amount of hierarchical structuring micro/nanoparticles, liquid silane having one or more groups configured to graft to a hierarchical structuring micro/nanoparticle and at least another group that results in hydrophobicity. The hierarchical structuring micro/nanoparticles are dispersed in the liquid silane. Another effective amount of synthetic adhesive, selected from thermosetting binders, moisture curing adhesives or polymers that form a strong interaction with a surface, is in solution with a solvent. Upon curing, the layer has a contact angle greater than 90° and a sliding angle of less than 10° and, less than 5% of an area of the layer is removed in a Tape test.
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