Rafler, G.G.RaflerMahler, J.J.Mahler2022-03-082022-03-081999https://publica.fraunhofer.de/handle/publica/304394Crosslinked aminoplastics-dye polymers (I) are new. (I) are obtained (1) reaction of optically active dye(s) (II), having group(s) reacting with amino groups, with monomeric amino component(s) (III), having group(s) reacting with the reactive groups of (II) and (precursor(s) of) other group(s) condensing with an aldehyde, to form a covalent linkage; then (2) reaction with aldehyde(s) (IV) and optionally (3) simultaneous or subsequent etherification with alcohol(s) (V); and finally (4) (partial) crosslinking of the precondensate. Also claimed are (i) aminoplastics precondensates prepared by steps (1), (2) and optionally (3); and (ii) a method of producing (I) for non-linear optics. USE - (I) are used in optical data transfer, storage and holography, the detection of high-energy fluorescence or the preparation of laser rods, especially in optical laminated structures or devices (all claimed). They are useful in non-linear optics, holographic data storage, fluorimetry and laser spectrosco py. ADVANTAGE - (I) are film-forming, functionalized polymers combining a high chromophore concentration, high orientation capacity or high sensitivity with respect to the desired optical effect with almost unlimited long-term stability, even at elevated temperature.de608668patent1997-19737815