Optical article comprising a surfactant-based temporary antifog coating with an improved durability

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United States of America Patent

PATENT NO 9645285
APP PUB NO 20140177053A1
SERIAL NO

14234349

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Abstract

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The present invention relates to an optical article comprising a substrate coated with a coating preferably comprising silanol groups on its surface and, directly contacting this coating, an antifog coating precursor coating, said precursor coating preferably having a static contact angle with water of more than 10° and of less than 50° and being obtained through the grafting of at least one organosilane compound possessing a polyoxyalkylene group and at least one silicon atom bearing at least one hydrolyzable group, and is further coated with a film obtained by applying a composition containing at least one surfactant of formula F(CF2)y—(CH2—CH2O)x+1H (VIII), wherein x is an integer ranging from 1 to 14, y is an integer lower than or equal to 10, compounds of formula (VIII) in which y=6 representing at least 90% by weight by weight, relative to the weight of compounds (VIII) present in the composition, so as to form an antifog coating, having preferably a static contact angle with water lower than or equal to 10°.

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Patent Owner(s)

Patent OwnerAddress
SATISLOH AG6340 BAAR

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cadet, Mamonjy Charenton le Pont, FR 13 92
Cretier, Annette Charenton le Pont, FR 10 32
Saint-Lu, Charlotte Charenton le Pont, FR 3 6

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