Anti-fouling paint containing a copolymer of a triorganotin salt of an unsaturated carboxylic acid
First Claim
1. An anti-fouling paint for ships'"'"' hulls comprising (a) an aqueous emulsion of a film-forming emulsion copolymer containing from more than 50 up to 80 percent by weight of units of at least one triorganotin salt of an olefinically unsaturated carboxylic acid, the balance of the copolymer being units of at least one olefinically unsaturated comonomer, the glass transition temperature of the copolymer being less than 30°
- C. and the inherent viscosity of the copolymer being from 0.5 to 1.5, and (b) a substantially water-insoluble metalliferous pigment capable of reacting with seawater to form a water-soluble metal compound.
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Abstract
An anti-fouling paint for ships'"'"' hulls comprises an aqueous emulsion of a film-forming emulsion copolymer and a substantially water-insoluble metalliferous pigment capable of reacting with seawater to form a water-soluble metal compound. The compound contains units of at least one triorganotin salt of an olefinically unsaturated carboxylic acid and units of at least one olefinically unsaturated comonomer selected so that the copolymer has a glass transition temperature of less than 30° C.
The paint has the remarkable property that relatively moving seawater smooths the surface of the paint.
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Citations
13 Claims
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1. An anti-fouling paint for ships'"'"' hulls comprising (a) an aqueous emulsion of a film-forming emulsion copolymer containing from more than 50 up to 80 percent by weight of units of at least one triorganotin salt of an olefinically unsaturated carboxylic acid, the balance of the copolymer being units of at least one olefinically unsaturated comonomer, the glass transition temperature of the copolymer being less than 30°
- C. and the inherent viscosity of the copolymer being from 0.5 to 1.5, and (b) a substantially water-insoluble metalliferous pigment capable of reacting with seawater to form a water-soluble metal compound.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification