| abstract |
The object of the present invention is to provide both water repellency and oil repellency, heat resistance and light resistance. The transparent coating film of the present invention is a transparent coating film comprising a polysiloxane skeleton and a trialkylsilyl group-containing molecular chain bonded to a silicon atom of a part of silicon atoms forming the polysiloxane skeleton, The alkyl group may be substituted by a fluoroalkyl group. The contact angle after standing for 24 hours at an initial contact angle of the liquid droplet on the transparent coating film at A 0 , a temperature of 200 ° C is B H , and a xenon lamp with an intensity of 250 W is irradiated for 100 hours when the contact angle after you called B L, (B H -A 0 ) / a 0 × 100 (%) ≥-27 ≥-15 (%), and (B L -A 0) / a 0 × 100 (%) (%). ≪ / RTI > |