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Verfahren zum Verbruecken von Hydroxy- oder Carbonsaeuregruppen enthaltenden, organisch polymerisierbaren Silanen oder Silanharzeinheiten, sowie Produkte dieses Verfahrens

Method for linking a silane for producing a product, which is useful to prepare coating masses, comprises reacting silane, a transesterification product or a condensation product, or a condensate with a carbonyl compound
 
: Wolter, H.

:
Frontpage ()

DE 102005018059 A: 20050419
DE 2005-102005018059 A: 20050419
WO 2006-EP3527 A: 20060418
DE 102005018059 A1: 20061026
German
Patent, Electronic Publication
Fraunhofer ISC ()

Abstract
Die vorliegende Erfindung betrifft ein Verfahren zum Verknuepfen eines Silans mit der Formel (IIa), $F1 worin die Reste und Indices die folgende Bedeutung haben: Ra ist eine offenkettige und/oder cyclische Alkylen-, Arylen- oder Alkylenarylengruppe mit jeweils 1 bis 10 Kohlestoffatomen, die durch eine oder mehrere Sauerstoff- oder Schwefelatome oder Carboxyl- oder Aminogruppen unterbrochen sein oder solche Atome/Gruppen an ihrem dem Siliciumatom abgewandten Ende tragen kann; R1 ist eine mit Y substituierte, offenkettige und/oder cyclische Alkylen-, Arylen- oder Alkylenarylengruppe mit jeweils 1 bis 10 Kohlenstoffatomen, die durch eine oder mehrere Sauerstoff- oder Schwefelatome oder Carboxyl- oder Aminogruppen unterbrochen sein oder solche Atome/Gruppen an einem ihrer Enden tragen kann, R' ist eine offenkettige und/oder cyclische Alkyl-, Alkenyl-, Aryl-, Alkylaryl- oder Arylalkylgruppe mit vorzugsweise 1 bis 20 Kohlenstoffatomen, B hat die Bedeutung einer geradkettigen oder verzweigten, organisch polymerisierbaren Gruppe mit mindestens einer C=C-Doppelbindung und mindestens 2 Kohlenstoffatomen, X1 ist eine Gruppe, die unter Ausbildung von Si-O-Si-Bruecken eine hydrolytische Kondensationsreaktion eingehen kann, Y bedeutet -OH oder -COOH, a bedeutet 1 oder 2, und b ist 0 oder 1, zur Herstellung eines Produktes, das die Komponente (III) $F2 zweifach, dreifach oder in einer hoeheren Anzahl enthaelt, wobei ...

 

DE 102005018059 A1 UPAB: 20061204 NOVELTY - Method for linking a silane (IIa) for producing a product, which is a component (III) in double-fold, three-fold or in higher amounts, or for cross-linking a condensate, a partial condensate, polymers or partial polymers, containing structural units (IIb) over the bond R1, comprises reacting (IIa) or its isomer, a transesterification product or a condensation product, which results by loss of an alcohol molecule of the silane, or a condensate, a partial condensate, a polymer or a partial polymer, containing (IIb), with a carbonyl compound (IV). DETAILED DESCRIPTION - Method for linking a silane (IIa) of formula (B1-R1(Y1)-Ra)a(Rb)bSi(X1)4-a-b for producing a product, which is a component (III) of formula (B1-R1-Ra)a(Rb)bSi(X1)4-a-b in double-fold, three-fold or in higher amounts, or for cross-linking a condensate, a partial condensate, polymers or partial polymers, containing structural units (IIb) of formula (B3-R1(Y1)-Ra)a(Rb)bSi(OR4)d(X1)4-a-b-d over the bond R1, where (IIa) or its isomer, a transesterification product or a condensation product, which results by loss of an alcohol molecule of the silane, or a condensate, a partial condensate, a polymer or a partial polymer, containing (IIb), reacts with a carbonyl compound (IV) of formula (Q-R5(-Qa)c). Ra = open-chain and/or cyclic alkyl-, aryl- or alkylaryl with 1-10C atoms, interrupted by one or more of O or S atoms or carboxyl or amino groups or such atoms/groups prevents the silicium atom at their end; R1 = a group substituted with Y1, alkyl-, aryl- or alkylaryl with 1-10C atoms, interrupted by one or more of O or S atoms or carboxyl or amino groups or such atoms/groups at their end; Rb = open-chain and/or cyclic alkyl-, aryl- or alkylaryl, preferably 1-20C alkylaryl; B1 = organically polymerizable group with at least one C=C-double bond and at least 2 carbon atoms; X1 = a group, which is obtained under the formation of Si-O-Si-bridges in a hydrolytic condensation reaction; Y1 = -OH or -COOH; a = 1 or 2; b = 0 or 1; B3 = a polymerizable group as in B1 or such a group, whose double bond is already reacted; R4 = a bond to another silicium atom, optionally partially also to another metal atom, which can be built into silicic acid hetero polycondensation products, and optionally partially also hydrogen; d = 1-3; Q, Qa = NCO, -OH or -C(O)Xa; C(O)Xa = a group of carboxylic acids or an activated carbonyl compounds; c = 1-6; and R5 = a single bond and the rest of any group with c+1 valency (where R5 is present only in exceptional cases, when Q and Qa are activated carboxylic acid groups and c is 1 ). When Q and/or Qa is -NCO or -C(O)Xa, then Y1 in (IIa) or (IIb) is OH; and when Q and/or Qa is -NCO or -OH, then Y1 in (IIa) or (IIb) is COOH. INDEPENDENT CLAIMS are included for: (1) a silane of formula (V); (2) a condensate or a partial condensate comprising structural units of formula (VI); and (3) a polymer or a partial polymer comprising structural units of formula (VII). R2 = R1; Rc = Ra; Rd = Rb; X2 = X1; B2 = B1; Z1, Z2 = -NH-C(O)O-, -NH-C(O)- or -CO(O)-, where the first two groups are bonded over the NH group to R3, while the carboxylate group are bonded in both directions; R3 = a single bond (in the case of c is 1, and Z1 and Z2 is -C(O)-O) or any group that possesses c+1 valency; R-4a = R4; and B4 = B3. USE - The silane polymers are useful as and/or for the production of coating-, filling-, gluing-, grouting- and sealing masses, fibers, particles, foils, binding agents for ceramic particles, or as embedding masses. ADVANTAGE - The scratchproof coatings and molded article exhibit high firmness; possess a high wet-strength; and does not exhibit any toxicological/allergic hesitation.

: http://publica.fraunhofer.de/documents/N-51769.html