Use of salts as accelerators in an epoxy resin compound for chemical fastening
AssigneeHilti Aktiengesellschaft
InventorsNicole Behrens, Alexander Bornschlegl, Armin Pfeil
Life of this patent
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Abstract
A method includes 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 means. Another method includes 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.
Claims15
A method, comprising:
- accelerating an epoxy resin compound by combining the epoxy resin compound with at least one salt (S) selected from the group consisting of salts of nitric acid, salts of nitrous acid, salts of halogens, and combinations thereof,
- wherein the epoxy resin compound is a multi-component epoxy resin compound,
- 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,
- wherein the epoxy resin component (A) and the curing agent component (B) are separate from one another prior to the combining so as to prevent a reaction,
- 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, and
- wherein the at least one curable epoxy resin is a diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F, hexanediol diglycidyl ether, a bisphenol A epichlorohydrin resin, a bisphenol F epichlorohydrin resin, or a mixture thereof,
- wherein the method further comprises 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.
A method for the chemical fastening of construction means and/or anchoring materials, the method comprising:
- chemical fastening of the construction means and/or anchoring materials by curing 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 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 salt (S) is selected from the group consisting of salts of nitric acid, salts of nitrous acid, salts of halogens, and combinations thereof,
- 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, and
- wherein the at least one curable epoxy resin is a diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F, hexanediol diglycidyl ether, a bisphenol A epichlorohydrin resin, a bisphenol F epichlorohydrin resin, or a mixture thereof,
- wherein the method further comprises introducing the multi-component epoxy resin compound into a borehole prior to curing.
Dependencies are inferred from the claim text.