Liquid crystalline polymer substrates with orthogonal molecular orientation
AssigneeCelanese Corporation
InventorDagobert E. Stuetz
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Abstract
In one embodiment this invention provides a polymeric, nonlinear optical medium comprising a thin substrate of wholly aromatic thermotropic liquid crystal polymer having an uniaxial orthogonal molecular orientation.
Claims11
A thin substrate comprising a wholly aromatic thermotropic liquid crystal polymer having a uniaxial orthogonal molecular orientation within about 10 degrees of perpendicular to the substrate plane.
A polymeric nonlinear optical medium comprising a film of thermotropic liquid crystal polymer having an external field-induced stable uniaxial orthogonal molecular orientation within about 10 degrees of perpendicular to the film plane, wherein the polymer has a wholly aromatic chemical structure characterized by the recurring unit:
- --Ar--X--Ar--
- where X is a divalent radical selected from estero, amido, azomethino, azo, azoxy, etheno and ethyno groups, and Ar is a divalent aromatic radical selected from phenylene, naphthylene and diphenylene groups, and aromatic radicals corresponding to the formula:
- ##STR3## where Y is a carbonyl, sulfono, oxy or thio group.
A laser frequency converter device with a polymeric nonlinear optical component comprising a thin medium of wholly aromatic thermotropic liquid crystal polymer having a uniaxial orthogonal molecular orientation within about 10 degrees of perpendicular to the thin medium plane.
An article of manufacture having a surface area coated with a self-adhering polymer film comprising a wholly aromatic thermotropic liquid crystal polymer having a uniaxial orthogonal molecular orientation within about 10 degrees of perpendicular to the film plane.
Dependencies are inferred from the claim text.