Coating composition, coating film made of same, and optical article

Abstract

There is provided a coating composition having a good wetting property which is capable of forming a coating film exhibiting a high refractive index, a less discoloration, and excellent transparency and uniformity when polymerized and cured. The present invention relates to a coating composition comprising (A) 100 parts by weight of a thiirane ring-containing compound, (B) 0.0001 to 10 parts by weight of a catalyst for accelerating polymerization of the thiirane ring-containing compound, and (C) 0.005 to 4 parts by weight of a modified silicone oil; a coating film produced from the composition; and an optical product provided with the coating film.

1 . A coating composition comprising (A) 100 parts by weight of a thiirane ring-containing compound, (B) 0.0001 to 10 parts by weight of a catalyst for accelerating polymerization of the thiirane ring-containing compound, and (C) 0.005 to 4 parts by weight of a modified silicone oil.  
   
   
       2 . The coating composition according to  claim 1 , further comprising 1 to 30 parts by weight of (D) a silane coupling agent.  
   
   
       3 . The coating composition according to  claim 1 , wherein the compound (C) have a surface-active property.  
   
   
       4 . The coating composition according to  claim 1 , wherein the compound (A) has at least one structure represented by the following structural formula (1):  
     
       
         
         
             
             
         
       
     
   
   
       5 . The coating composition according to  claim 1 , wherein the compound (A) has a structure represented by the following structural formula (2):  
     
       
         
         
             
             
         
       
     
     wherein m is an integer of 0 to 4; and n is an integer of 0 to 2.  
   
   
       6 . A coating film obtained by polymerizing and curing the coating composition as defined in  claim 1 .  
   
   
       7 . An optical product provided on a surface thereof with the coating film as defined in  claim 6 .  
   
   
       8 . The coating composition according to  claim 2 , wherein the compound (C) have a surface-active property.  
   
   
       9 . A coating film obtained by polymerizing and curing the coating composition as defined in  claim 2 .  
   
   
       10 . An optical product provided on a surface thereof with the coating film as defined in  claim 9.