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A process for preparation of planar, optical waveguides useful for optical, electrooptical, or hybrid systems or for the preparation of electrooptical structural elements or hybrid electrooptical guide plates
A process for preparation of planar, optical waveguides useful for optical, electrooptical, or hybrid systems or for the preparation of electrooptical structural elements or hybrid electrooptical guide plates
A process for preparation of planar, optical waveguides for integration into optical or electrooptical structural elements or in hybrid conduction plates including the steps:(i) production of an integrated planar waveguide core in a polymer layer comprising polyacryate of increased glass transition temperature (Tg) and (ii) application of a further layer to the differentially illuminated (sic) or directly structured polymer layer. A process for preparation of planar, optical waveguides for integration into optical or electrooptical structural elements or in hybrid conduction plates including the steps:(i) production of an integrated planar waveguide core in a polymer layer comprising polyacryate of increased glass transition temperature (Tg) by means of unique (one-off, sic) differential illumination (sic) via a photomask or with direct laser illumination and (ii) application of at least one further layer to the differentially illuminated (sic) or directly structured polymer layer, where the further layer is a transparent superstrate (sic) of lower refractive index than the differentially illuminated or directly patterned (sic) structure. An independent claim is included for a polymethacrylate composition of glass transition temperature Tg higher than 145[deg]C obtainable by copolymerization of monomers selected from:(a) monomers 1-7: singly or in combination of the following mole% concentration relative to the polymer:1 to 7 all 0-90; (b) monomers 8 and 9 with crosslinkable side groups: and as desired with (c) methyl methacrylate to optimize the mechanical properties, where further class (a) monomers, i.e. (1) 1-3 and 6-7 are fluorinated at the ester group, (2) 1 and 7 are optionally fluorinated with dimethyl substitution at the polyring, and = (3): R1 to R4 = H, Me, further class (b) monomers, (1) 8 with Me or dimethyl substitution at the triple ring (sic) and optionally fluorinated, (2) 9 with Me or multiple Me substitution at the ester substituent, (3) further common monomers with crosslinking functionality in quantity 0-45% relative to the polymer, i.e. preferably 2-dicyclopentenyloxyethyl-, allyl-, vinyl-, propylene glycol-, glycidyl methacrylate, 2-(2-oxo-imidazolidine-1-yl)ethyl melthacrylate, hydroxypropyl-, hydroxyethyl-, 2-isocyanatoethyl (meth)acrylate, and other class (c) monomers: (1) phenyl-, benzyl-, n-alkyl, iso-alkyl-, t-alky-, and cyloalkyl methacrylate, (2) phenyl-, benzyl-, n-alkyl, iso-alkyl-, t-alky-, and cyloalkyl acrylate, (3) a styrene derivative.
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