| 摘要 |
PURPOSE:To prepare the subject compsn. capable of forming a film which retains excellent clarity, water repellency, and hardness for a long time and is useful for forming a hard coating film of an optical disc by incorporating a specific modified polysiloxane compd. into the compsn. CONSTITUTION:A modified polysiloxane compd. of the formula [wherein R1 and R2 are each H or CH3; 0<=x<=200; 4<=y<=30; 1<=z<=40; (y+z)/x>=0.25; and 5<=j<=20] is incorporated into a compsn. The compd. is useful as a modifier or surface protective agent for a molded plastic article and is esp. suitable as an additive for an ultraviolet-curable resin for forming a hard coating film of an optical disc. An ultraviolet-curable compsn. [mainly comprising a monomer having at least three (meth)acryloyl groups] contg. the compd. forms a coating film retaining excellent clarity, water repellency, and hardness for a long time. |
