WATER- AND OIL-REPELLENT COATING FILM AND ARTICLES HAVING THIS COATING FILM
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United States of America Patent
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Issued Date -
Sep 3, 2015
app pub date -
Jun 7, 2013
filing date -
Oct 13, 2012
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Abstract
Provided is a coating film that can more reliably exhibit an excellent water repellency and an excellent oil repellency. This water- and oil-repellent coating film is a coating film formed on a surface of a material in order to impart water repellency and oil repellency, wherein (1) the coating film contains a metal oxide-containing composite particle; (2) the composite particle contains a) a metal oxide particle and b) a covering layer that contains a polyfluoroalkyl methacrylate resin and is formed on the surface of the metal oxide particle; and (3) a value obtained by dividing the fluorine content (weight %) of the composite particle by a surface area (m2/g) of the metal oxide particle is 0.025 to 0.180.
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