TABLE 9 - ANTIFOULING COATINGS FOR NEOPRENE 





Coating System 10 



Coating System 11 



Navy 134 Polyisobutylene 



Antifouling Rubber 



Cost/Ft^ 



AF Paint (MIL-P-22299) 



Organotin Sheeting 



$0.40 



$3.85 including cement 



Lifetime 



2 yr 



5 yr 



Effectiveness 



Broad spectrum 



Broad spectrum 



Environmental 



None 



Very slight 



Impact 







General 



Conventional single 



80-mil-thick black rubber 



Description 



package paint 



sheet 



Availability 



Made to Government 

 specification 



Proprietary product 



Application 



Sprayed 



Cut to size, cemented. 



Technique 





and trimmed 



Interrelationships Between Anticorrosion and Antifouling Paints . Anticorro- 

 sion and antifouling paints usually are selectded to provide a unified 

 system with optimum compatibility and adhesion between the two 

 coatings. '^"~'^° One example of this is the Navy vinyl antifouling paints 

 applied over the Navy vinyl primer system. The former is the red Formula 

 121; the latter could be red lead Formula 119 or zinc chromate Formula 120. 

 The polyisobutylene antifouling paint Navy Formula 134 used over the poly- 

 isobutylene black tie-coat Navy Formula 133 is another example of a 

 compatible system. 



The use of an antifouling paint over a foreign anticorrosive system 

 frequently is possible. For .example. Navy vinyl and Navy polyisobutylene 

 antifouling paints can be applied over the Navy Formula 150-151-154 poly- 

 amide epoxy anticorrosion paint system with satisfactory results. However, 

 certain other combinations may not be satisfactory. Information on the 

 compatibility of one paint with another comes from experience and basic 

 chemistry. Table 10 rates the compatibility of antifouling discussed 

 here with certain anticorrosive coatings used by the Navy. Generally, 

 compatibility is found between coatings of similar generic origin. 



39 



