Isocyanate-amine-based chemical anchor with improved performance, and use thereof

2:

• The multi-component resin system according to claim 1, wherein the silane has at least one Si-bound hydrolyzable group.

3:

• The multi-component resin system according to claim 2, wherein the silane comprises a further functional group.

4:

• The multi-component resin system according to claim 3, wherein the silane is selected from the group consisting of a 3-aminopropyltrialkoxysilane, a 3-glycidyloxyalkyltrialkoxysilane, a bis(3-trialkoxysilylpropyl) amine, a 3-mercaptopropyltrialkoxysilane, a 3-(meth)acryloyloxyalkyltrialkoxysilane, an alkenylalkoxysilane, a tetraalkoxysilane, and a mixture of two or more thereof.

5:

• The multi-component resin system according to claim 1, wherein the silane is contained in an amount of up to 10 wt. %.

6:

• The multi-component resin system according to claim 1, wherein both the isocyanate component and the amine component comprise at least one filler and the at least one rheological additive.

7:

• The multi-component resin system according to claim 6, wherein a filling level of the isocyanate component and a filling level of the amine component is from 10 to 70 wt. %, based in each case on a total weight of the isocyanate component and the amine component, respectively.

8:

• The multi-component resin system according to claim 1, wherein the at least one aliphatic and/or aromatic polyisocyanate and the at least one amine are present in a quantity ratio in which a ratio of the average NCO functionality of the at least one aliphatic and/or aromatic polyisocyanate to the average NH functionality of the at least one amine is between 0.3 and 2.0.

9:

• The multi-component resin system according to claim 1, wherein the isocyanate component comprises at least one aromatic polyisocyanate selected from the group consisting of 1,4-phenylene diisocyanate, 2,4- and 2,6-toluylene diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, tetramethylxylylene diisocyanate, 1,5-naphthylene diisocyanate, diphenylene methane-2,4′- and -4,4′-diisocyanate, triphenylmethane-4,4′,4″-triisocyanate, bis- and tris-(isocyanatoalkyl)-benzene, toluene, and xylene.

10:

• The multi-component resin system according to claim 1, wherein the isocyanate component comprises at least one aliphatic polyisocyanate selected from the group consisting of hexamethylene diisocyanate (HDI), trimethyl HDI (TMDI), pentane diisocyanate (PDI), 2-methylpentane-1,5-diisocyanate (MPDI), isophorone diisocyanate (IPDI), 1,3- and 1,4-bis(isocyanatomethyl)cyclohexane (H6XDI), bis(isocyanatomethyl)norbornane (NBDI), 3(4)-isocyanatomethyl-1-methyl-cyclohexyl isocyanate (IMCI), and 4,4′-bis(isocyanatocyclohexyl)methane (H12MDI).

11:

• The multi-component resin system according to claim 1, wherein the total filling level is in a range from 35 to 65 wt. %, based on a total weight of the multi-component resin system.

12:

• The multi-component resin system according to claim 1, wherein the at least one amine which is reactive to isocyanate groups is selected from the group consisting of 4,4′-methylene-bis[N-(1-methylpropyl)phenylamine], an isomer mixture of 6-methyl-2,4-bis(methylthio)phenylene-1,3-diamine and 2 methyl-4,6-bis(methylthio)phenylene-1,3-diamine, 4,4′-methylenebis(2,6-diethylaniline), 4,4′-methylenebis(N-sec-butylcyclohexanamine), 3,3′-diaminodiphenylsulfone, N,N′-di-sec-butyl-p-phenylenediamine, 2,4,6-trimethyl-m-phenylenediamine, and a mixture thereof.

13:

• The multi-component resin system according to claim 1, wherein the multi-component resin system is a two-component resin system.

14:

• A mortar composition, produced by mixing the isocyanate component and the amine component of the multi-component resin system according to claim 1.

15:

• A method, comprising:
• chemically fastening a construction element in a borehole, with the mortar composition according to claim 14.

16:

• A method, comprising:
• chemically fastening a construction element in a mineral substrate, with the multi-component resin system according to claim 1.

17:

• A method for improving pull-out strength of a composition in cleaned boreholes, comprising:
• mixing a silane into a multi-component resin system based on an isocyanate amine adduct for chemical fastening.

18:

• A method, comprising:
• chemically fastening a construction element in a borehole, with the multi-component resin system according to claim 1.

19:

• A method, comprising:
• chemically fastening a construction element in a mineral substrate, with the mortar composition according to claim 14.