| abstract |
(57) [Summary] (Glasses) A lens base material is prepared by using a bifunctional organosilane compound represented by the following [I] or a partial hydrolyzate thereof, or [II] an organic compound represented by the general formula (2). A water-repellent treated lens formed by treating with a water-repellent agent comprising a silicon compound to form a water-repellent layer comprising a non-cured substance and having a contact angle with water of 80 ° or more. Embedded image (In the formula, R is a substituted or unsubstituted monovalent hydrocarbon group, X is a hydrolyzable group or a hydroxyl group directly bonded to a silicon atom, Rf is a fluorinated organic group, and n is a positive integer.) Effect: Since bifunctional is used as the water repellent, the pot life of the water repellent is long. No water scorch (even if you blow your breath, the pad traces during the balling work do not appear white). There is no dust, the appearance is beautiful, and there is a sense of quality. Slippery is better than trifunctionality. |