| abstract |
The object of the present invention is to provide a film containing a polydialkylsiloxane skeleton which is excellent in durability to warm water. The coating of the present invention contains a polydialkylsiloxane skeleton, and the ratio of carbon atoms to silicon atoms (C / Si), on a molar basis, is 0.93 or more and less than 1.38. When the initial contact angle of water is θ 0 and the contact angle of water after being immersed in ion exchange water at 70 ° C for 24 hours is θ W , the change rate of the contact angle change rate d W expressed by a specific formula , Can be above -10%. |