Polymers useful in forming self-assembled bonded anisotropic ultrathin layers and their use
AssigneeResearch Corporation Technologies, Inc.
InventorsDavid W. Grainger, Fang Sun
Life of this patent
Estimating the term…
Abstract
Polymers which form ultrathin, chemically adherent, anisotropic films on substrate surfaces impart useful properties to the surface. The polymers can be functionalized with any of a wide array of side chains and groups to impart properties and/or uses to the substrate.
Claims12
A process for forming an adherent, ultrathin, anisotropic film on an oxidic, graphitic or metallic surface, comprising providing a polymer comprising siloxanyl main chains from which are pendant alkylene anchoring chains to each of which is bound an anchoring group selected from the group consisting of --SH, alkylsulfides, --CHCH.sub.2 CH.sub.2 SS, thioethers, alkyldisulfides, --Si(CH.sub.3).sub.p (A).sub.3-p, wherein p is 1, 2 or 3 and A is halogen or alkoxy containing 1 to 4 carbon atoms, pyridine, isonitrile, and --COOH, for binding through chemisorption to a solid surface, wherein said polymer further comprises a plurality of fluorinated alkyl-capped, fluorinated polyalkoxy side chains, wherein the polymer is capable upon said binding of forming from solution a self-assembled ultrathin anisotropic film on said surface, and contacting said polymer with said surface under conditions effective to cause said anchoring groups to chemisorb to said surface.
A process for forming an ultrathin low-friction film on an oxidic, graphitic or metallic surface, comprising contacting said surface with a solution of a polymer comprising siloxanyl main chains having a plurality of pendant alkylene anchoring chains to each of which is bound an anchoring group selected from the group consisting of --SH, alkylsulfides, --CHCH.sub.2 CH.sub.2 SS, thioethers, alkyldisulfides, --Si(CH.sub.3).sub.p (A).sub.3-p, wherein p is 1, 2 or 3 and A is halogen or alkoxy containing 1 to 4 carbon atoms, pyridine, isonitrile, and --COOH, for binding through chemisorption to said surface, wherein said polymer further comprises a plurality of fluorinated alkyl-capped, fluorinated polyalkoxy side chains, wherein upon said binding said polymer forms from solution a self-assembled monolayer on said surface, under conditions effective to cause binding to occur, said polymer also having a plurality of nonanchoring side chains effective to reduce the coefficient of friction of said surface.
A process for imparting a selected property to a solid surface, comprising applying to said surface an ultrathin, anisotropic, chemically adherent film of a polymer comprising siloxanyl main chains from which are pendant alkylene anchoring chains to each of which is bound an anchoring group selected from the group consisting of --SH, alkylsulfides, --CHCH.sub.2 CH.sub.2 SS, thioethers, alkyldisulfides, --Si(CH.sub.3).sub.p (A).sub.3-p, wherein p is 1, 2 or 3 and A is halogen or alkoxy containing 1 to 4 carbon atoms, pyridine, isonitrile, and --COOH, from which extend a plurality of fluorinated alkyl-capped, fluorinated polyalkoxy side chains effective to impart the selected property to said surface.
Dependencies are inferred from the claim text.