Epoxy-based substance for fixing purposes, the use thereof and the use of specific components

Abstract

Compositions for a curable substance for fixing purposes, comprising an epoxy component (a), which contains curable epoxides, and a hardener component (b), which comprises a Mannich base formulation, obtainable by reaction of specific amines, and/or mixtures of styrenated phenols with low molecular weight amines, to novel Mannich base formulations or mixtures of styrenated phenols with low molecular weight amines, and to the use of such Mannich base formulations and/or of such mixtures of styrenated phenols with low molecular weight amines, and in each case especially further additional ingredients, especially in hardener components for epoxy resins.

1 . A composition for a curable substance for fixing purposes, comprising an epoxy component (a), which contains curable epoxides, and a hardener component (b), which comprises
 (i) a Mannich base formulation obtainable by reaction of one or more specific amines with phenols and aldehydes,   the specific amines being those of the formula   
       
         
           
           
               
               
           
         
         wherein 
         “CYC” is a monocyclic saturated ring having from 3 to 12 ring atoms or a condensed dicyclic saturated ring system having from 6 to 12 ring atoms, wherein in each case the ring atoms are selected from 0 to 2 nitrogen atoms, 0 to 1 oxygen atoms and 0 to 1 sulfur atoms and from carbon atoms; 
         X is CH 2 , wherein for each group —[X] n —NH 2  one X can be NH, O or S, with the proviso that in the case of an X═O or S, in the group —[X] n —NH 2  in question n is at least 2 and the O or S is not bonded directly to a nitrogen atom and in the case of one X═NH, n is at least 2 and the X═NH is bonded neither directly to a nitrogen ring atom nor to a nitrogen atom present in the group —[X] n —NH 2  in question; 
         n is from 0 to 5, with the proviso that at least in one of the groups —[X] n —NH 2  n is from 1 to 5; and 
         m is a whole positive number greater than or equal to 2, especially 2 to 3; 
         or salts thereof, 
         and/or 
         (ii) mixtures of styrenated phenols with one or more low molecular weight amines, which are di- or poly-amines, or salts thereof. 
       
     
     
         2 . The composition according to  claim 1 , wherein, in the case of (ii), the low molecular weight amine(s) are those of the formula shown under (i) in  claim 1 . 
     
     
         3 . The composition according to  claim 1 , wherein, in the case of (ii), the low molecular weight amine(s) are xylylenediamines, aliphatic polyamines, oligomeric diamines of the formula H 2 N—(CH 2 ) i —NH—[(CH 2 ) j —NH] k —(CH 2 ) l —NH 2 , wherein i, j and l are each independently of the others from 2 to 4 and k is 0, 1 or 2; cycloaliphatic amines; or amine adducts; or mixtures of two or more thereof. 
     
     
         4 . The composition according to  claim 1 , wherein, in the case of (ii), the low molecular weight amine(s) are selected from m-xylylenediamine, 1,3-bis(aminomethyl)cyclohexane (BAC), triethylenetetraamine and isophoronediamine, or mixtures of two or more thereof, especially from BAC and m-xylylenediamine or mixtures thereof. 
     
     
         5 . The composition according to  claim 1 , wherein, in the case of (i), the specific amines(s) are selected from 1,3-bis(aminomethyl)cyclohexane (BAC), 4-(2-aminoethyl)piperazine, N,N′-bis(3-amino-n-propyl)piperazine, and mixtures of two or more thereof, with special preference being given to BAC. 
     
     
         6 . The composition according to  claim 1  as a substance for drilled holes. 
     
     
         7 . The composition according to  claim 1 , wherein, in the case of (i), for the Mannich base preparation there are used as phenols styrenated phenol or phenol and as aldehydes formaldehyde or a precursor thereof. 
     
     
         8 . The composition according to  claim 7 , wherein the content of free phenol is less than 1% by weight. 
     
     
         9 . The composition according to  claim 1  in the form of a multi-component kit, especially a two-component kit, wherein at least an epoxy component (a) and a hardener component (b) are housed in different compartments of a container or in a plurality of containers in a common packaging. 
     
     
         10 . A multi-component kit, especially a two-component kit, according to  claim 9 , wherein the ratio by weight of components (a) to (b) is 10 to 1 or less, especially 5 to 1 or less, preferably 3 to 1 or less, the lower limit advantageously being 1 to 1 in each case. 
     
     
         11 . The composition according to  claim 1 , wherein, in the case of (i), the proportion of Mannich base, based on the total weight of the component (b) introduced, has a proportion of from 10 to 100% by weight, preferably from 30 to 75% by weight. 
     
     
         12 . The composition according to  claim 1 , wherein, in the case of (ii), the proportion of the mixture of styrenated phenols and low molecular weight amines, based on the total weight of the component (b) introduced, has a proportion of from 10 to 100% by weight, preferably from 30 to 75% by weight. 
     
     
         13 . Use of a composition according to  claim 1 , especially in the form of a two-component kit, for the fixing of anchoring elements, wherein the components thereof are mixed and introduced into surface hollows, especially drilled holes, in a substrate and the anchoring elements are introduced simultaneously or subsequently. 
     
     
         14 . Use of a composition according to  claim 1 , especially in the form of a two-component kit, for the fixing of fibres, non-crimp fabrics, woven fabrics or composites for reinforcement of buildings. 
     
     
         15 . Use of a Mannich base as described in  claim 1  in the production of a composition, especially the hardener component of a multi-component kit containing the components of such a composition, for the fixing of anchoring elements in drilled holes. 
     
     
         16 . Use of a mixture of one or more styrenated phenols with one or more low molecular weight amines, as described in  claim 1 , in the production of a composition, especially the hardener component of a multi-component kit containing the components of such a composition, for the fixing of anchoring elements in drilled holes.