3M Patents
Water-Based Coating
Patent No. U.S. 6,893,731 B2
3M Innovative Properties Company has been granted a patent for a water-based composition suitable for coating a polyester-based substrate. The composition has a first polymer comprising a core-shell latex polymer form from the polymerization of at least one monomer selected from the group consisting of bicyclic alkyl (meth)acrylates and aromatic (meth)acrylates; and at least one monomer, which imparts to the first polymer the ability to be crosslinked; a water-soluble or water-dispersable second polymer select from the group consisting of acrylate-based resins, sulfonated polyester-based resins, and combinations thereof.