Composition for increasing the lipophobicity of a watch-making component
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United States of America Patent
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Jul 25, 2017
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Dec 21, 2011
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Dec 23, 2010
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Abstract
The present invention describes the highly advantageous properties of a mixture of thiol-perfluoropolyether (PFPE) molecules with perfluorinated bisphosphonic (PF-BP) compounds. This mixture makes it possible in effect to obtain a lipophobic behavior (also referred to as “epilame” effect) with common watch-making lubricants on all the materials tested, including metals, inter alia gold and alloys thereof, ceramics and semiconductors, and gives the surface treated a good resistance to ageing and to cleaning products.
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