Use of an epoxide-amine-based multicomponent mortar composition

Patent metadata

Field	Value
Publication number	US-10189744-B2
Application number	US-201414905664-A
Country	US
Kind code	B2
Filing date	Jul 18, 2014
Priority date	Jul 18, 2013
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

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

The invention claimed is:

1. A multicomponent mortar composition comprising a hybrid hardener which contains a mixture of
(i) 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;
(ii) a novolac resin of 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 (i) and (ii), as a catalyst; and
(iii) a compound of 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 and R 6 independently of each other are an unbranched or branched C 1 -C 15 alkyl radical and n is 0 or 1, R 3 and R 4 independently of each other are hydrogen or a (CH 2 ) n NR 7 R 8 radical or a NH(CH 2 ) n NR 7 R 8 radical, and R 7 and R 8 independently of each other are an unbranched or branched C 1 -C 15 alkyl radical and n is 0 or 1,
wherein the multicomponent mortar composition is epoxide-based, and
wherein the multicomponent mortar composition chemically fastens structural elements and anchoring means.

2. The multicomponent mortar composition 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. The multicomponent mortar composition according to claim 1 , wherein the hardener contains a mixture of at least two amines, selected from among aliphatic, alicyclic and aromatic amines.

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

5. The multicomponent mortar composition 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. The multicomponent mortar composition 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. The multicomponent mortar composition according to claim 1 , 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.

8. The multicomponent mortar composition according to claim 7 , wherein the compound of the formula (II) is tris-2,4,6-(dimethylaminomethyl)phenol.

Assignees

• Hilti Ag

Inventors

• Dureault Alex
• Jewitt Stephen
• Kloninger Christian

Classifications

• C04B24/02

  Alcohols; Phenols; Ethers · CPC title

• C08G59/621

  Phenols · CPC title

• C08G59/40

  characterised by the curing agents used · CPC title

• C04B14/06

  Quartz; Sand · CPC title

• C04B14/064

  Silica aerogel · CPC title