Composition, coating film, fluorine-containing coating film and laminate

Abstract

The invention provides a composition capable of forming a coating film that is excellent in salt water resistance and weather resistance and is less likely to deteriorate for a long time. The composition contains a polyaspartic acid ester and a fluoropolymer.

1 . A composition comprising:
 a polyaspartic acid ester; and   a fluoropolymer.   
     
     
         2 . The composition according to  claim 1 ,
 wherein the polyaspartic acid ester is represented by the following formula (1):   
       
         
           
           
               
               
           
         
       
       wherein X is a n-valent group obtainable from an organic polyamine that contains n primary amino groups bonding to an acyclic or cyclic aliphatic structure and that has a number average molecular weight of 88 to 400 by removing the primary amino groups therefrom; R 1  and R 2  are the same as or different from each other, and are each a C1-C18 organic group; and n is an integer of 2 or greater. 
     
     
         3 . The composition according to  claim 1 ,
 wherein the fluoropolymer is a curable functional group-containing fluoropolymer.   
     
     
         4 . The composition according to  claim 1 ,
 wherein the fluoropolymer is a hydroxy-containing fluoropolymer.   
     
     
         5 . The composition according to  claim 1 ,
 wherein the polyaspartic acid ester and the fluoropolymer have a mass ratio of 5/95 to 95/5.   
     
     
         6 . The composition according to  claim 1 , further comprising a curing agent. 
     
     
         7 . The composition according to  claim 6 ,
 wherein the curing agent is a polyisocyanate compound.   
     
     
         8 . The composition according to  claim 1 , further comprising a solvent. 
     
     
         9 . The composition according to  claim 1 , which serves as a coating. 
     
     
         10 . The composition according to  claim 1 , which serves as a coating to be applied to an offshore structure or a port facility. 
     
     
         11 . A coating film obtainable from the composition according to  claim 1 . 
     
     
         12 . The coating film according to  claim 11 , which has a thickness of 100 to 1000 μm. 
     
     
         13 . A fluorine-containing coating film comprising:
 a urethane bond; and   a urea bond, and   
       exhibiting a corrosion from scribe of 1 mm or shorter. 
     
     
         14 . The fluorine-containing coating film according to  claim 13 , which has a thickness of 100 to 1000 μm. 
     
     
         15 . A laminate comprising:
 a base; and   the coating film according to  claim 11 .   
     
     
         16 . The laminate according to  claim 15 , further comprising a layer formed of epoxy resin. 
     
     
         17 . The laminate according to  claim 15 ,
 wherein the base is formed of iron.   
     
     
         18 . A laminate comprising:
 a base; and   the fluorine-containing coating film according to  claim 13 .