Patent No. U.S. 7,033,639 B2
Rohm and Haas has obtained a patent for a coating composition comprising a polyaniline particle comprising a core polymer particle in an amount from 33-91% by weight of the polyaniline particle comprising strong acid groups derived from the polymerization of one or more ethylenically unsaturated strong acid monomers; and a polyaniline polymer attached to the core polymer particle; wherein the polyaniline particle has an average particle diameter of less than or equal to 10 μm; and a binder.