Paint antifouling

U.S. MiHtary Specification DOD-P-24647, Paint, Antifouling, Ship Hull, Mat. 22, 1985. 

Products and Uses Applications include underwater paints, antifouling paints, and boat bottom paints. Used as fungicide and bactericide in paints. 

Chem. Descrip. Proprietary org. compd. in xylene Uses Antisettling agent for solv.-based systems, acid-catalyzed systems, coatings (acrylic, alkyd, vinyl, epoxy, polyester, silicone alkyd), aerosol paints, antifouling paints, automotive OEM, refinish, and primers, zinc dust primers, anticorrosive primers, marine topcoats, wood furniture coatings... 

Properties Yel. powd. sol. in hydrochloric acid si. sol. in nitric acid insol. in water m.w. 340.52 Toxicology TLV (as mercury) 0.05 mg/m of air toxic by ing., inh., and skin absorption strong irritant poisonous carcinogen Hazardous Decomp. Prods. Heated to decomp., emits very toxic fumes of Hg and As Uses Waterproof paints antifouling paints... 

Part II Function/Application Index paints, antifouling... 

Table 13 shows some of the developmental products that have EPA appHcations pending and may be available in the near future. Sea Nine is a variation on the very successflil isothiazolone chemistry. It is claimed to be an improvement over metallic actives used for antifouling paint and wood preservation (46,47). Decylthioethylamine and its water-soluble hydrochloride are claimed to be especially effective at controlling biofilm in cooling water appHcations (48—50). The hydroxymethylpyra2ole shown is also suggested to have properties that are well suited to the protection of aqueous products or emulsions (51,52). 

The advantages claimed for organotin polymer-based antifouling paints include constant toxicant deHvery vs time, erosion rate and toxicant deHvery are controUable, no depleted paint residue to remove and dispose, 100% utilization of toxicant, polishing at high erosion rates, surface is self-cleaning, and function is continuously reactivated. 

Vinyl acetate polymers have long been used as chewing gum bases. They have been studied as controUed release agents for programmed administration of dmgs and as a base for antifouling marine paints (166,167). 

Metal Linoleates and Resinates. The calcium and cobalt salts of Hnoleates and resinates are used chiefly as components of metallic driers used in printing inks. Copper Hnoleate [7721-15-5] is used in antifouling paints for marine use (4). 

Munk, F. and Rothschild, W., Interaction between Anticorrosive and Antifouling Coatings in Shipsbottom Painting , J. of Paint Techn., 43, 557 (1970)... 

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