Abstract: An aqueous composition comprises a natural rubber modified with a graft-polymerised methylmethacrylate polymer such as a graft-polymerised methlmethacrylate, an acrylic polymer, an acrylonitrile synthetic rubber and optionally, minor ingredients. The minor ingredients may be a quaternary ammonium surfactant and a polysiloxane. The composition is applied to an article such as of natural and/or synthetic rubber to effect coating. The process is especially suited to coating of medical gloves.