Process for forming an anti-fouling coating system

A process for forming a durable anti-fouling coating system on a substrate comprising:

• (a) modifying a surface of the substrate using a surface modification means;
• (b) applying a first coating composition to at least a portion of the modified substrate surface to form a first coating thereover, the first coating composition comprising as a component a first perfluoropolyether modified silane;
• (c) curing the first coating at a temperature and a relative humidity sufficient to promote hydrolysis of the perfluoropolyether modified silane component to form a cured first coating on the substrate;
• (d) optionally, modifying the surface of the cured first coating using the same or different surface modification means as was used in (a);
• (e) applying a second coating composition to at least a portion of the surface of the cured first coating to form a second coating thereover, the second coating composition comprising as a component a second perfluoropolyether modified silane which is the same or different from that comprising the first coating composition;
• and
• (f) curing the second coating at a temperature and a relative humidity sufficient to promote hydrolysis of the second perfluoropolyether modified silane component to form a durable anti-fouling coating system on the substrate.