Use of an Epoxide-Amine-Based Multicomponent Mortar Composition

Patent metadata

Field	Value
Publication number	US-2016159690-A1
Application number	US-201414905664-A
Country	US
Kind code	A1
Filing date	Jul 18, 2014
Priority date	Jul 18, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

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.

First claim

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 R 1 , R 2 , R 3 and R 4 , each independent of each other, are hydrogen or an unbranched or branched C 1 -C 15 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.

2 . Use according to claim 1 , wherein in formula (I), R 1 to R 4 are hydrogen, or one or two of the radicals R 1 to R 4 are CH 3 radicals, or one of the radicals R 1 to R 4 is a tert-butyl radical or an unbranched or branched C 8 -C 15 alkyl radical.

3 . Use according to claim 1 , wherein the hardener contains a mixture of at least two amines, selected from among aliphatic, alicyclic and aromatic amines.

4 . Use according to claim 3 , wherein the mixture contains
(i) alkyl diamine and aromatic amines or (ii) alkyl diamines, polyalkylene-polyamine and aromatic amines.

5 . Use according to claim 4 , wherein the mixture contains
(i) 2-methyl-1,5 -pentanediamine and 1,3-benzenedimethanamine or (ii) trimethylhexamethylenediamine, 2-methyl-pentanediamine, triethylenetetramine and 1,3-benzenedimethanamine.

6 . Use according to claim 5 , wherein the mixture contains
(i) 28 to 34 percent by weight 2-methyl-1,5-pentanediamine and 4 to 7 percent by weight 1,3-benzenedimethanamine, or (ii) 20 to 28 percent by weight trimethylhexamethylenediamine, 20 to 28 percent by weight 2-methyl-pentanediamine, 10 to 18 percent by weight triethylenetetramine and 4 to 10 percent by weight 1,3-benzenedimethanamine, each relative to the hybrid hardener (a) and (b).

7 . Use according to claim 1 , wherein the hybrid hardener further contains (c) at least one compound of the general formula (II):

in which
R 1 is hydrogen or an unbranched or branched C 1 -C 15 alkyl radical;
R 2 is a (CH 2 ) n NR 5 R 6 radical or a NH(CH 2 ) n NR 5 R 6 radical, in which R 5 , R 6 are, each independent of each other, an unbranched or C 1 -C 15 alkyl radical and n is 0 or 1;
R 3 and R 4 are, each independent of each other, hydrogen or a (CH) n NR 7 R 8 radical or a NH(CH) n NR 7 R 8 radical, in which R 7 and R 8 are, each independent of each other, hydrogen or an unbranched or branched C 1 -C 15 alkyl radical and n is 0 or 1,

as a co-catalyst.

8 . Use according to claim 7 , wherein in formula (II), R 1 is hydrogen, R 2 , R 3 and R 4 are each a (CH 2 ) n NR 7 R 8 radical with n=0 or 1, and R 7 and R 8 are methyl or ethyl.

9 . Use according to claim 8 , wherein the compound of the formula (II) is tris-2,4,6-(dimethyl aminomethyl)phenol.

10 . Use of a multicomponent mortar composition produced using the hybrid hardener according to claim 1 with
(A) a resin component, which comprises
as a curable compound at least one epoxide resin, which on average contains more than one epoxide group per molecule 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 contains additional ingredients, selected from among inorganic and organic compounds,
for construction purposes, except coatings.

11 . Use according to claim 10 , in which the hybrid hardener is contained in a quantity of 54 to 84 percent by weight, relative to the hardener component (B).

12 . Use according to claim 10 , wherein the hardener component (B) further contains an adhesive agent.

13 . Use according to one of claim 10 , wherein the curable compound is selected from among diglycidyl ether of bisphenol A, diglycidyl ether of bisphenol F or mixtures thereof.

14 . Use according to claim 10 , wherein the resin component (A) further contains at least one reactive diluent.

15 . Use according to claim 14 , wherein the at least one reactive diluent is selected from among glycidyl ethers of aliphatic, alicyclic or aromatic mono- or polyalcohols, glycidyl ethers with an epoxide functionality of at least 2, tri or higher glycidyl ethers or mixtures of two or more thereof.

16 . Use according to claim 14 , wherein the reactive diluent is contained in a quantity of up to 60 percent by weight.

17 . Use according to claim 10 , wherein the resin component (A) and/or the hardener component (B) further contains at least one inorganic additive.

18 . Use according to claim 17 , wherein the at least one inorganic additive is selected from among mineral or mineral-like fillers, reinforcing agents, rheology auxiliary agents, phlegmatising agents, thixotropic agents, stabilizers, dispersing agents, agents for controlling the rate of reaction, and wetting agents.

19 . Use according to claim 17 , wherein the at least one inorganic additive is contained in a quantity of up to 70 percent by weight.

20 . Use according to claim 10 , for the structural adhesion of concrete/concrete, steel/concrete, or steel/steel or one of the mentioned material to other mineral materials, for the structural reinforcement of building components, masonry, and other mineral materials, for reinforcement applications with fiber-reinforced polymers for buildings, for the chemical fastening on surfaces of concrete, steel, or other mineral materials.

Assignees

• Hilti Ag

Inventors

• Dureault Alex
• Jewitt Stephen
• Kloninger Christian

Classifications

• C04B24/121

  Amines, polyamines · CPC title

• C04B26/14 Primary

  Polyepoxides · CPC title

• C04B24/302 Primary

  Phenol-formaldehyde condensation polymers · CPC title

• C08G59/621

  Phenols · CPC title

• C08G59/56 Primary

  together with other curing agents · CPC title