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Title
Transparente Beschichtungszusammensetzung und Verfahren zu deren Herstellung sowie entsprechend transparent beschichtete Substrate
Date Issued
2006
Author(s)
Declerck, P.
Olsowski, B.
Houbertz-Krauss, R.
Popall, M.
Patent No
102004046406
Abstract
Die Erfindung betrifft ein Verfahren zur Herstellung einer transparenten Beschichtungszusammensetzung, die im Wesentlichen auf einer Polykondensationsreaktion beruht. Die durch dieses Verfahren hergestellten Beschichtungszusammensetzungen basieren auf einem vollstaendig durchkondensierten anorganischen silikatischen Netzwerk, waehrend das organische Netzwerk noch nicht ausgebildet ist. Ebenso betrifft die Erfindung ein Verfahren zur Beschichtung von Substraten mit derartigen Beschichtungszusammensetzungen unter Ausbildung eines beschichteten Substrates, bei dem neben dem anorganischen Netzwerk durch den Aushaertevorgang auch das organische Netzwerk ausgebildet ist. Derartige Beschichtungszusammensetzungen und beschichtete Substrate finden breite Anwendungen in allen optischen Anwendungsfeldern.
WO2006032536 A UPAB: 20060426 NOVELTY - Preparation of a transparent coating composition (I) comprises a poly condensation of at least a hydrolyzable and/or condensable silane (comprising e.g. at least a thermally cross linkable functional group) for the formation of inorganic network, and at least one metal compounds in an organic solvent, optionally in presence of a catalyst, where the condensation are carried out at 20-80 deg. C for 24-144 hours. DETAILED DESCRIPTION - Preparation of a transparent coating composition (I) comprises a poly condensation of at least a hydrolyzable and/or condensable silane (comprising at least a thermally and/or photo chemically cross linkable functional group for formation of organic network) for the formation of inorganic network, and at least one metal compounds of formula (MXP) in an organic solvent, optionally in presence of a catalyst, where the condensation are carried out at 20-80 deg. C for 24-144 hours (where the temperature and reaction duration in co-ordinate prevents a cross-linking of the functional groups and thus the formation of a organic network). M = elements of the groups of Ib to VIIIb of the periodic system; X = counter ion to balance charge or a ligand; and p = 2-4. INDEPENDENT CLAIMS are also included for: (1) a transparent coating composition with a refractive index of 1.35-1.95 produced by the preparation method; (2) method for the coating of a substrate with a coating composition comprising applying coating composition on the substrate and hardening the compounds of the coating composition; and (3) a transparent coated substrate prepared by the above method. USE - (I) and coated substrates are useful in the entire field of optics. (I) is useful: in optical microsystems, preferably lattice, lenses, coating, photonic crystals or other photonic structures, multilayer, mirror, reflecting layers, layers in multilayer constructed for antireflection layer and filter, laminar architectural applications as well as reflecting and antireflecting eyeglass coating; and as the photo catalysis and the photovoltaic. ADVANTAGE - (I): is transparent and free of added nano-particles (claimed); and exhibits higher refractive indices, high- chemical stability, -mechanical and -thermal stability.
Language
de
Patenprio
DE 102004046406 A: 20040924