| abstract |
An optical article comprising a surfactant-based temporary antifogging coating having improved durability. An optical article comprising a substrate having at least one major surface coated with a first coating and a precursor coating of an antifogging coating in direct contact with the first coating. Said coating precursor of the cloudy coating is at least one organosilane compound, comprising at least one polyoxyalkylene group comprising less than 80 carbon atoms and at least one hydrolyzable group And at least one organosilane compound having a silicon atom is grafted, and the precursor coating has the formula F (CF 2 ) y — (CH 2 —CH 2 O) x + 1 H ( VIII) (wherein x is an integer in the range of 1 to 14, y is an integer of 10 or less, and y = 6 (VIII In a film of a surfactant-containing composition comprising at least one surfactant in the amount of at least 90% by weight relative to the weight of the compound (VIII) present in the composition The precursor coating being coated and coated with a film of a surfactant-containing composition is an anti-fogging coating having a static contact angle to water of 10 ° or less, Optical article. [Selection figure] None |