Patent ID: 8273684
Filing Date: 2012-09-25
Classification: A01N

Abstract:
1. A seed coating composition comprising an aqueous carrier, a pigment colorant, a graft copolymer dispersant, and at least one of a fungicide, an insecticide, a rodenticide, nematocide or bird repellent, wherein: the dispersant is a graft copolymer having a weight average molecular weight of about 5,000-100,000 and comprising a polymeric backbone and macromonomer side chains attached to the backbone, wherein: (1) the polymeric backbone is hydrophobic in comparison to the side chains and contains polymerized ethylenically unsaturated hydrophobic monomers and present up to 20% by weight, based on the weight of the graft copolymer, of polymerized ethylenically unsaturated acid containing monomers; and (2) the sidechains are hydrophilic macromonomers that are attached to the backbone at a single terminal point and contain polymerized ethylenically unsaturated monomers and 2-100% by weight, based on the weight of the macromonomer, of polymerized ethylenically unsaturated acid containing monomers and have a weight average molecular weight of about 1,000-30,000; and wherein the acid groups of the graft copolymer are neutralized with an inorganic base or an amine.