Coating agents and coated articles

Abstract

The invention describes novel coating agents that include a polymer, one or more latent reactive groups and one or more noncovalent linking groups, the noncovalent linking groups selected to interact with a substrate to which the coating agent is applied. The coating agents are useful for providing a coating that can be further functionalized (for example, by application of additional coating layers), or for providing desirable properties to a surface.

1 .- 39 . (canceled) 
     
     
         40 . An article comprising a substrate including silicon, and a coating disposed on a surface of the substrate, the coating comprising: (a) a polymer; (b) one or more latent reactive groups that are pendent from the polymer; and (c) one or more noncovalent linking groups, the noncovalent linking groups selected to interact with the substrate. 
     
     
         41 . The article according to  claim 40  wherein the substrate comprises silicone. 
     
     
         42 . The article according to  claim 40  wherein the noncovalent linking groups are siloxane groups. 
     
     
         43 . The article according to  claim 40  wherein the noncovalent linking groups are selected from C 4 -C 20  alkyl groups, polyamides, phenolics, catechols, polyethylene glycols, polyacrylates, polyurethanes, polycarbonates, polyesters, polyethylenes, polypropylenes or polyethers, or a combination of any of these. 
     
     
         44 . The article according to  claim 40  wherein the polymer is selected from polyolefins, vinyl polymers, polyesters, polybutylenes, polyethers, polyamides, polyurethanes, polycarbonates, polystyrenes, poly(methyl)methacrylates, polyacrylonitriles, poly(vinylacetates), poly(vinyl alcohols), chlorine-containing polymers such as poly(vinyl)chlorides, polyoxymethylenes, polyimides, phenolics, amino-epoxy resins, or copolymers or combinations of any of these. 
     
     
         45 . The article according to  claim 40  wherein the polymer is a polymer including a polymaleic acid derivative. 
     
     
         46 . The article according to  claim 40  wherein noncovalent linking groups are part of the polymer backbone. 
     
     
         47 . The article according to  claim 40  wherein noncovalent linking groups are pendent from the polymer backbone. 
     
     
         48 . The article according to  claim 40  wherein the latent reactive groups comprise photoreactive groups. 
     
     
         49 . The article according to  claim 48  wherein the photoreactive groups are selected from anthraquinone, aryl azide, aryl ketone, aryl ketone derivative, or mixtures of any one or more of these. 
     
     
         50 . The article according to  claim 40  wherein the latent reactive groups comprise thermally reactive groups. 
     
     
         51 . The article according to  claim 40  wherein the latent reactive groups are halophenylazides. 
     
     
         52 . The article according to  claim 40  further comprising an active agent. 
     
     
         53 . The article according to  claim 40  further comprising an overcoat layer. 
     
     
         54 . A coating agent comprising: (a) a polymer including a polymaleic acid derivative; (b) one or more latent reactive groups; and (c) one or more noncovalent linking groups, the noncovalent linking groups selected to interact with a substrate to which the coating agent is applied. 
     
     
         55 . The coating agent according to  claim 54  wherein the polymaleic acid derivative is a derivatized poly(alkene-co-maleic anhydride). 
     
     
         56 . The coating agent according to  claim 54  wherein the latent reactive groups are pendent from the polymer. 
     
     
         57 . The coating agent according to  claim 54  wherein the latent reactive groups comprise photoreactive groups. 
     
     
         58 . The coating agent according to  claim 54  wherein the latent reactive groups comprise thermally reactive groups. 
     
     
         59 . The coating agent according to  claim 54  wherein the latent reactive groups are halophenylazides. 
     
     
         60 . The coating agent according to  claim 54  further comprising an active agent. 
     
     
         61 . The coating agent according to  claim 60  wherein the active agent is an initiator group. 
     
     
         62 . The coating agent according to  claim 60  wherein the active agent is a passivating group. 
     
     
         63 . An article comprising a substrate and a coating disposed on a surface of the substrate, the coating comprising the coating agent according to  claim 54 . 
     
     
         64 . The article according to  claim 63  wherein the substrate is fabricated from a material selected from silicon, polyolefin, vinyl polymer, polystyrene, polyacrylate, polymethacrylate, poly(methyl)methacrylate, polyacrylonitrile, poly(vinylacetate), poly (vinyl alcohol), chlorine-containing polymer, polyoxymethylene, polycarbonate, polyamide, polyimide, polyurethane, phenolics, amino-epoxy resin, polyester, cellulose-based plastic, rubber-like plastic, or a combination of any of these. 
     
     
         65 . A method to modify a surface of a substrate, the method comprising steps of:
 (a) contacting a surface of the substrate with the coating agent according to  claim 61 ;   (b) treating the coating agent to activate latent reactive groups of the coating agent to form a coated surface;   (c) contacting the surface with zwitterionic monomer and catalyst; and   (d) polymerizing the zwitterionic monomer to form a brush polymer coating.   
     
     
         66 . The method according to  claim 65  wherein the zwitterionic monomer includes carboxybetaine, sulfobetaine or phosphobetaine.