Patent ID: 7750059

Claim:
An imprintable polymer solution for imprinting, said polymer solution comprising: at least one polymer dissolved in at least one polymerizable monomer; at least one component selected from the group consisting of at least one cross-linker and at least one viscosity modifier; and at least one photoinitiator selected from the group consisting of α-hydroxy-ketones, α-amino-ketones, and benzophenones; wherein said at least one cross-linker is selected from molecules that have difunctional polymerizable groups, and wherein said at least one cross-linker is selected from the group consisting of ethylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, triethylene glycol dimethacrylate, tetraethyleneglycol dimethacrylate, 1,6-hexanediol dimethacrylate, neopentyl glycol dimethacrylate, polyethylene glycol (PEG) dimethacrylate wherein the polyethylene glycol has a molecular weight from 400 to 6000, tetraethylene glycol dimethacrylate, ethoxylated Bisphenol A dimethacrylate with up to 50 ethoxy units, cyclohexane dimethanol dimethacrylate, tripropylene glycol dimethacrylate, trimethylolpropane trimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, dipentaerythritol pentamethacrylate, alkoxylated glyceryl with up to 30 carbon atoms, trimethylolpropane trimethacrylate, tris(2-hydroxyethyl) isocyanurate trimethacrylate, 3-(acryloyloxy)-2-hydroxypropyl methacrylate, mono-2-(methacryloyloxyethyl) maleate, divinyl benzene, methacrylic anhydride, pentaerythritol triallyl ether, di(ethylene glycol) dimethacrylate, di(ethylene glycol) divinyl ether, tetraethylene glycol divinyl ether, di(ethylene glycol) diacrylate, 3-(acryloyloxy)-2-hydroxypropyl methacrylate and mono-2-(methacryloyloxy)ethyl maleate, wherein any methacrylate group can be replaced with an acrylate group or an acrylamide group or a methacrylamide group and wherein the foregoing compounds are either unsubstituted or substituted with at least one group selected from the group consisting of halogen, alkyl, or aryl groups.