Use of an Epoxide-Amine-Based Multicomponent Mortar Composition

摘要

Described is the use of a hardening composition for epoxide-amine-based, multicomponent mortar compositions, particularly the use of one of these epoxide-amine-based, multicomponent mortar compositions for chemical fastening purposes. The multicomponent mortar composition contains (A) a resin component, which comprises as a curable compound at least an epoxide resin and optionally at least one reactive diluent, and (B) a hardener component, which comprises a hybrid hardener, wherein the resin component (A) and/or the hardener component (B) optionally comprises other ingredients selected from among inorganic and/or organic compounds. The hybrid hardener is a mixture of (a) at least one amine, selected from among aliphatic, alicyclic, or aromatic amines, as a hardener, and (b) a novolac resin as catalyst, wherein the novolac resin is contained in a quantity of 30 to 45 percent by weight, relative to the total weight of the hybrid hardener. The use of the hybrid hardener results in a rapid curding of the multicomponent mortar composition, even at low temperatures, with a complete through-curing of the mortar composition. High load values of the cured mortar composition both at low temperatures (+5° C.) and at high temperatures (+50° C.) and improved creep resistance at high temperatures (+50° C.) are hereby achieved. In addition, one can entirely omit the use of free phenols.

主权项

1. Use of a hybrid hardener which contains a mixture of
(a) at least one amine, selected from among aliphatic, alicyclic and aromatic amines, wherein the amine on average has at least two reactive hydrogen atoms, bonded to a nitrogen atom, per molecule, as a hardener and (b) a novolac resin of the general formula (I): in which R1, R2, R3 and R4, each independent of each other, are hydrogen or an unbranched or branched C1-C15 alkyl radical and n is 1 to 12, wherein the novolac resin is contained in a quantity of 30 to 45 percent by weight, relative to the total weight of the hybrid hardener (a) and (b), as a catalyst, as a hardener in an epoxide-based, multicomponent mortar composition.