Use of salts as accelerators in an epoxy resin compound for chemical fastening

Abstract

A method involves using at least one salt (S) selected from the salts of nitric acid, salts of nitrous acid, salts of halogens, or salts of trifluoromethanesulfonic acid, as an accelerator in a multi-component epoxy resin compound for the chemical fastening of construction elements and/or anchoring elements. Another method involves the chemical fastening of construction elements and anchoring elements, such as anchor rods, anchor bolts, rods, sleeves, reinforcing bars, screws, and the like in boreholes in various substrates.

1 - 15 . (canceled) 
     
     
         16 . A method, comprising:
 accelerating an epoxy resin compound by combining the epoxy resin compound with at least one salt (S) comprising at least one salt of trifluoromethanesulfonic acid.   
     
     
         17 . The method according to  claim 16 , wherein the epoxy resin compound is a multicomponent epoxy resin compound. 
     
     
         18 . The method according to  claim 17 , wherein the multi-component epoxy resin compound comprises an epoxy resin component (A) which contains at least one curable epoxy resin, and a curing agent component (B) which contains at least one amine which is reactive to epoxy groups, and
 wherein the epoxy resin component (A) and the curing agent component (B) are separate from one another so as to prevent a reaction.   
     
     
         19 . The method according to  claim 18 , wherein prior to combining, the multi-component epoxy resin compound is present in cartridges or film pouches which comprise two or more separate chambers in which the epoxy resin component (A) and the curing agent component (B) are separately arranged so as to prevent the reaction. 
     
     
         20 . The method according to  claim 16 , further comprising:
 chemical fastening by curing with the epoxy resin compound of a construction element or anchoring means in a borehole.   
     
     
         21 . The method according to  claim 16 , wherein the at least one salt (S) is Ca(CF 3 SO 3 ) 2 , Mg(CF 3 SO 3 ) 2 , or Li(CF 3 SO 3 ) 2 . 
     
     
         22 . The method according to  claim 16 , wherein the at least one salt (S) comprises a cation selected from the group consisting of alkali metals, alkaline earth metals, lanthanides, aluminum, ammonium, and combinations thereof. 
     
     
         23 . The method according to  claim 18 , wherein the at least one amine reactive to epoxy groups is selected from the group consisting of 3-aminomethyl-3,5,5-trimethylcyclohexane (IPDA), 2-methyl-1,5-pentanediamine, m-xylylenediamine (mXDA), 1,3-bis(aminomethyl)-cyclohexane (1,3-BAC), 4,4′-methylenebis(cyclohexyl-amine) (PACM), 4-methylcyclohexyl-1,3-diamine (mCDA), 1,2-diaminocyclohexane (1,2-BAC), and mixtures thereof. 
     
     
         24 . The method according to  claim 18 , wherein the at least one salt (S) is present at least in the curing agent component (B). 
     
     
         25 . The method according to  claim 16 , wherein the at least one salt (S) is present in the epoxy resin compound in a proportion of from 0.1 to 4 wt. %, based on a total weight of the epoxy resin compound. 
     
     
         26 . The method according to  claim 18 , wherein the at least one curable epoxy resin is a diglycidyl ether of bisphenol A or bisphenol F or a mixture thereof. 
     
     
         27 . A method for the chemical fastening of a construction means and/or an anchoring material, the method comprising:
 chemical fastening of the construction means and/or anchoring material with a multi-component epoxy resin compound which comprises an epoxy resin component (A) which contains at least one curable epoxy resin, and a curing agent component (B) which contains at least one amine which is reactive to epoxy groups,   wherein the epoxy resin component (A) and the curing agent component (B) are separate from one another so as to prevent a reaction, and then combined to cure, and   wherein the epoxy resin component (A) and/or the curing agent component (B) comprises at least one salt (S) as an accelerator, and   wherein the at least one salt (S) comprises at least one salt of trifluoromethanesulfonic acid.   
     
     
         28 . The method according to  claim 27 , wherein the multi-component epoxy resin compound, before being combined, is present in cartridges or film pouches which comprise two or more separate chambers in which the epoxy resin component (A) and the curing agent component (B) are separately arranged so as to prevent the reaction. 
     
     
         29 . The method according to  claim 28 , further comprising:
 discharging out of the two or more separate chambers and mixing in a static mixer or dissolver the epoxy resin component (A) and the curing agent component (B).   
     
     
         30 . The method according to  claim 29 , further comprising:
 introducing a mixed multi-component epoxy resin compound into a borehole.   
     
     
         31 . The method according to  claim 16 , further comprising:
 chemical fastening by curing with the epoxy resin compound.   
     
     
         32 . The method according to  claim 16 , further comprising:
 chemical fastening by curing with the epoxy resin compound of an anchor rod, anchor bolt, rod, threaded rod, sleeve, threaded sleeve, reinforcing bar, and/or screw in a borehole.   
     
     
         33 . A composition, comprising:
 an epoxy resin compound and at least one salt (S) comprising at least one salt of trifluoromethanesulfonic acid.