Synthesis of copper pyrithione from zinc pyrithione and copper compound

摘要

A composition containing unique particles of copper pyrithione wherein greater than 20 wt% to 90 wt% of the particles have a particle size of greater than 10 microns, as determined by laser light scattering using a particle size distribution analyzer, and wherein the particles are flat acicular needle-shaped is described herein. Also described herein is an antifouling paint containing the copper pyrithione and a method of making the composition and antifouling paint.