Method for coating substrates with a carbon-based material

Abstract

The present invention relates to a method for coating substrates with a carbon-based material, comprising the steps of at least partially coating a substrate with a polymer film on at least one outside surface of the substrate and carbonizing the polymer film in an atmosphere that is essentially free of oxygen at temperatures in the range of 200° C. to 2500° C.

1 - 12 . (canceled) 
     
     
         13 . A carbon-coated substrate producible by a method comprising the following steps:
 a) melt-coating a substrate at least partially with a polymer film on at least one of the surfaces of the substrate, and   b) carbonizing the polymer film in an atmosphere that is essentially free of oxygen at temperatures in the range of 200° C. to 2500° C.   
     
     
         14 . The carbon-coated substrate of  claim 13 , wherein the polymer film further comprises additives selected from the group consisting of fillers, pore-forming agents, metals, extenders, lubricants and pigments. 
     
     
         15 . The carbon-coated substrate of  claim 14 , wherein the additives are selected from the group consisting of silicon oxides, aluminum oxides, aluminosilicates, zirconium oxides, titanium oxides, talc, graphite, carbon black, zeolite, clay minerals, phyllosilicates, fullerenes, catalysts, metals and metal compounds. 
     
     
         16 . The carbon-coated substrate of  claim 13 , wherein the polymer film comprises a film of one or more compounds selected from the group consisting of homopolymers, homopolymers of aliphatic polyolefins, homopolymers of aromatic polyolefins, copolymers, copolymers of aromatic polyolefins, copolymers of aliphatic polyolefins and mixtures thereof. 
     
     
         17 . The carbon-coated substrate of  claim 13 , wherein the polymer film comprises polyethylene, polypropylene, polybutene, polyisobutene, polypentene, polybutadiene, polyvinyls, polyvinyl chloride, polyvinyl alcohol, poly(meth)acrylic acid, polyacrylonitrile, polyamide, polyester, polyurethane, polystyrene, polytetrafluoroethylene, waxes, paraffin waxes, Fischer-Tropsch waxes or mixtures thereof. 
     
     
         18 . The carbon-coated substrate of  claim 13 , wherein the polymer film comprises a coating selected from the group consisting of lacquers, laminates or coatings. 
     
     
         19 . The carbon-coated substrate of  claim 13 , wherein the polymer film comprises a lacquer film produced from a lacquer with a binder base of alkyd resin, chlorinated rubber, epoxy resin, acrylate resin, phenolic resin, amine resin, oil base, nitro base, polyester, polyurethane, tar, tar pitch, bitumen, starch, cellulose, shellac, waxes, organic materials of renewable raw materials or combinations thereof. 
     
     
         20 . The carbon-coated substrate of  claim 13 , wherein the carbon-based material is subjected to an oxidative and/or reductive aftertreatment following carbonization and is optionally subjected to a CVD procedure for deposition of carbon and/or a ceramic. 
     
     
         21 . The carbon-coated substrate of  claim 13 , wherein the substrate is selected from a group consisting of metals, alloys, ceramics, zeolite, graphite, glass, stone, sand, carbon fiber composites, minerals, precursors, ceramic greenware and combinations thereof. 
     
     
         22 . The carbon-coated substrate of  claim 13 , wherein the substrate is selected from components of microelectronics or micromechanics, construction materials, Raschig rings, Sulzer packings, cartridge systems, filter systems, insulation materials or catalyst supports.