ANTIFOULING COATING COMPOSITION COMPRISING A FLUORINATED RESIN

摘要

A process for inhibiting the fouling of a substrate in a marine fouling environment, which comprises forming on the substrate, before exposure to the said environment, a coating comprising a curable fluorinated resin of the general formula: W-L-YFC-O-R^f-CFY-L-W wherein: W is a group of the general formula -Si(R¹)_alpha(OR²)_3-alpha, wherein alpha=0, 1, or 2, preferably alpha=0, R¹ and R² independently have the meaning of linear of branched C₁-C₆ alkyl groups, optionally containing one or more ether groups, or C₇-C₁₂ aryl or alkyl groups, and preferably R¹ and R² are C1-C4 alkyl groups; L is an organic linking group; Y is F or CF₃; and R^f is a group having an average molecular weight by number between 350 and 8000, preferably between 500 and 3000, and comprising repeating units having at least one of the following structures randomly distributed along the chain: -CFXO-, CF₂CF₂O-, CF₂CF₂CF₂O-, CF₂CF₂CF₂CF₂O-, CR⁴R⁵CF₂CF₂O-, -(CF(CF₃)CF₂O)-, -CF₂CF(CF₃)O-, wherein X is F or CF₃, R⁴ and R⁵ independently have the meaning of H, Cl, or C1-C4 perfluoroalkyl.