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Title
Dialkoxy- oder Dihydroxyphenylreste enthaltende Silane, daraus hergestellte Klebstoffe sowie Verfahren zur Herstellung der Silane und der Klebstoffe
Date Issued
2008
Author(s)
Ballweg, T.
Nique, S.
Patent No
102008057684
Abstract
(A1) Die vorliegende Erfindung betrifft Silane mit der Formel (I) RaQbSiX4-a-b (I) worin die Reste und Indices die folgende Bedeutung haben: R ist gegebenenfalls gleich oder verschieden und bezeichnet eine geradkettige, verzweigtkettige und/oder cyclische Alkyl-, Alkenyl-, Aryl-, Alkylaryl- oder Arylalkylgruppe oder einen geradkettigen oder verzweigten und/oder cyclischen organischen Rest mit mindestens einer organisch polymerisierbaren Gruppe; Q ist ein beliebiger Rest, der die Gruppe (C6H3) (OR1)2 aufweist, worin R1 Wasserstoff oder eine C1-C4-Alkylgruppe bedeutet; X ist eine Gruppe, die unter Ausbildung von Si-O-Si-Bruecken eine hydrolytische Kondensationsreaktion eingehen kann, a ist 0, 1 oder 2, b ist 1 oder 2, und a + b sind zusammen 1, 2 oder 3. Ausserdem betrifft die Erfindung organisch modifizierte Kieselsaeure(hetero)(teil)kondensate, die sich u.a. aus den Silanen der Formel (I) herstellen lassen und die sich bei Vorhandensein organisch polymerisierbarer Gruppen zu einem organischen Polymer aushaerten lassen. Die Kieselsaeure(hetereo)(teil)kondensate und Polymere der Erfindung eignen sich als Klebstoffe, insbesondere fuer das Feuchtmilieu.
DE 102008057684 A1 UPAB: 20100621 NOVELTY - Silane compounds (I) are new. DETAILED DESCRIPTION - Silane compounds of formula (RaQbSiX4-a-b) (I) are new. R = optionally branched and/or cyclic alkyl, alkenyl, aryl, alkylaryl or arylalkyl or optionally branched and/or cyclic organic residue with at least one polymerizable organic group; Q = (C6H3)(OR1)2; R1 = H or 1-4C alkyl; X = a group that undergoes a hydrolytic condensation reaction under the formation of Si-O-Si bridges; either a = 0, 1 or 2; and b = 1 or 2; or a+b = 1, 2 or 3. INDEPENDENT CLAIMS are also included for: (1) an organically modified silicic acid(hetero)(part)condensate, comprising a silane compound of formula (RaQbSi(OR2)4-a-b) (II), where the silane compound (II) is located in silicic acid heteropolycondensates; (2) a homo- or a heteropolymer comprising the organically modified silicic acid(hetero)(part)condensate, whose groups which are susceptible to organic polymerization is present at least partially in polymerized form; (3) preparations of (I); (4) preparing the organically modified silicic acid(hetero)(part)condensate, comprising either (a) subjecting (I) optionally in presence of another silane compound, to at least partial hydrolytic condensation reaction or (b) providing an organically modified silica(hetero)(part)condensate of formula (RaY1bSi(OR2)4-a-b) (VII) with an amino derivative of formula (NH2-R7-(C6H3)(OR1))2) (III) or reacting an organically modified silica(hetero)(part)condensate of formula (RaW1bSi(OR2)4-a-b) (VIII) with a hydroxyl derivative of formula (HO-R7-(C6H3)(OR1)2) (V); and (5) preparing the homo- or heteropolymer comprising the polymerization of the existing groups of organically modified silicic acid(hetero)(part)condensate, which are susceptible to an organic polymerization. R2 = a bond to other silicon atom or H, 1-10C alkyl or a bond to other metal atom; Y1 = R5-COA; R5 = 1-10C alkyl; COA = COOH, activated COOH or carboxylic acid anhydride; R7 = arbitrary 2-bonded organic residue; W1 = R6-NCO; and R6 = 1-10C alkyl. USE - The organically modified silicic acid(hetero)(part)condensate or a polymer comprising the organically modified silicic acid(hetero)(part)condensate is useful: as an adhesive for bonding and coating, preferably in medical technology; as a fixing aid e.g. for bone-tapes; in dentistry (as an adhesive agent); in ophthalmology (for retina repairs); in biotechnology (e.g. for enzyme immobilization without the loss of enzyme activity, in situ hybridization or immunoassays). The adhesive is also useful for bonding non-biological materials in electronics, electrical engineering and opticals. ADVANTAGE - The adhesive is also effective in wet environments e.g. in medical applications.
Language
de
Patenprio
DE 102008057684 A: 20081117