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US 2024/0166870 A1Published application
Isocyanate-amine-based chemical anchor with improved performance, and use thereof
AssigneeHilti Aktiengesellschaft
InventorsMemet-Emin Kumru, Christian Plenk, Thomas Bürgel
Life of this patent
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Abstract
A multi-component resin system can be used for producing a mortar composition based on isocyanate amine adducts for the chemical fastening of construction elements. A mortar composition based on isocyanate amine adducts can be produced from the multi-component resin system. The mortar composition based on the isocyanate amine adducts is useful for the chemical fastening of construction elements in mineral substrates.
Claims23
1:
- A multi-component resin system, containing:
- an isocyanate component comprising at least one aliphatic and/or aromatic polyisocyanate having an average NCO functionality of 2 or more, and
- an amine component comprising at least one amine which is reactive to isocyanate groups and has an average NH functionality of 2 or more,
- with the proviso that the multi-component resin system is free of polyaspartic acid esters, the isocyanate component and/or the amine component comprising at least one filler and at least one rheology additive, and total filling level of a mortar composition produced by mixing the isocyanate component and the amine component is in a range from 30 to 80 wt. %,
- wherein the isocyanate component and/or the amine component contains at least one additive, the at least one additive being
- a compound of formula I
- An(L)m(X)p (formula I),
- wherein
- A is phosphorous, boron, aluminum, titanium, or zirconium,
- X can be the same or different and is an alkoxy, aryloxy, or acyloxy group,
- L can be the same or different and is at least one ligand,
- n is the valency of A,
- p is an integer from 1 to n,
- m is 0 or an integer from 1 to n−1, and
- n=m+p,
- or
- a siloxane having at least one functional group which is capable of addition reaction to isocyanates, but which has no hydrolyzable groups bonded to a silicon atom.
14 more elements
2:
- The multi-component resin system according to claim 1, wherein in the compound of formula I, X is an alkoxy group —OR1 or an acyloxy group —O(C═O)R1, where R1 is in each case an optionally substituted, linear or branched alkyl group having 1 to 24 carbon atoms.
3:
- The multi-component resin system according to claim 2, wherein X is a group selected from the group consisting of —O—CH3—, —OC2H5, —OC3H7, —OC4H9, —OC5H11, —O—(CO)—CH3—, —O—(CO)—C2H5, —O—(CO)—C3H7, —O—(CO)—C4H9, and —O—(CO)—C5H11.
4:
- The multi-component resin system according to claim 3, wherein X is a group selected from the group consisting of —O—CH3, —OC2H5, —OC3H7, and —OC4H9.
5:
- The multi-component resin system according to claim 1, wherein in the compound of formula I, X is the same.
6:
- The multi-component resin system according to claim 1, wherein in the compound of formula I, the ligand L is selected from the group consisting of acetoacetate, phosphate, phosphite, sulfate, sulfite, CO, CN, cyclopentyl, and pentamethylcyclopentyl.
7:
- The multi-component resin system according to claim 1, wherein the compound of formula I is selected from the group consisting of trimethyl phosphate, triethyl phosphate, triethyl borate, triethyl aluminate, triisopropyl borate, tributyl borate, tetraethyl titanate, tetraisopropyl titanate, tetraethyl zirconate, and tetrabutyl zirconate.
8:
- The multi-component resin system according to claim 1, wherein the compound of formula I is present in an amount of 0.001-10 wt. %, based on a total weight of the multi-component resin system.
9:
- The multi-component resin system according to claim 1, wherein in the siloxane, the at least one functional group capable of addition reaction with isocyanate groups is a terminal group.
10:
- The multi-component resin system according to claim 9, wherein the at least one functional group is selected from the group consisting of hydroxy, carboxy, amino, sec, amino, mercapto, isocyanato, alkenyl, (meth)acryloyl, anhydride, and epoxy groups.
11:
- The multi-component resin system according to claim 1, wherein the siloxane has the structure
- R3Si—[O—Si(R1)2]n—O—SiR3
- wherein
- n is 0 or an integer from 1 to 1000, inclusive, and
- R and R1, independently of one another, are in each case a C1-C20-alkyl group or an aralkyl group optionally containing heteroatoms and optionally comprising at least one group capable of addition reaction with isocyanate groups.
2 more elements
(canceled)
13:
- The multi-component resin system according to claim 1, wherein the siloxane is selected from the group consisting of 1,3-bis(2-aminoethylaminoethyl)tetramethyldisiloxane, 1,3-bis(glycidoxypropyl)tetramethyldisiloxane, tris(glycidoxypropyldimethylsiloxy)-phenylsilane, 3-methacryloxypropylpentamethyldisiloxane, poly(acryloxypropylmethyl)siloxane, 1,3-bis[(acryloxypropylmethyl)siloxane, 1,3-bis(3-methacryloxypropyl)tetrakis-(trimethylsiloxy)disiloxane, 1,3-bis(3-methacryloxypropyl)tetramethyldisiloxane, monomethacryloxypropyl terminated polydimethylsiloxane, poly[dimethylsiloxane-co-(3-(monomethacryloxy)propyl)methylsiloxane], 1,3,-bis(4-methacryloxybutyl)tetramethyldisiloxane, (methacryloxypropyl)methyl siloxane/dimethylsiloxane copolymer, dodecamethylpentasiloxane, 1,1,1,3,5,7,7,7-octamethyl-3,5-bis(trimethylsilanyloxy)tetrasiloxane, trimethylsilyl terminated poly(methylhydro-siloxane), bis(hydroxyalkyl)-terminated poly(dimethylsiloxane), poly[dimethylsiloxane-co-(2-(3,4-epoxycyclohexyl)ethyl)methylsiloxane], diglycidyl ether terminated poly(dimethylsiloxane) poly[dimethylsiloxane-co-[3-(2-(3-hydroxy-ethoxy)ethoxy)propyl]methylsiloxane, and monoglycidyl ether terminated poly(dimethylsiloxane).
14:
- The multi-component resin system according to claim 1, wherein a proportion of the siloxane is from 0.5 to 20 wt. %, based on a total weight of the multi-component resin system.
15-17. (canceled)
18:
- 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/or 2,6-toluylene diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, tetramethylxylylene diisocyanate, 1,5-naphthylene diisocyanate, diphenylene methane-2,4′- and/or -4,4′-diisocyanate, triphenylmethane-4,4′,4″-triisocyanate, bis- and tris-(isocyanatoalkyl)-benzene, toluene, xylene, and mixtures thereof.
19:
- 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 (PD1), 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), 4,4′-bis(isocyanatocyclohexyl)methane (H12MDI), and mixtures thereof.
20:
- 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.
21-22. (canceled)
23:
- A mortar composition, produced by mixing the isocyanate component and the amine component of the multi-component resin system according to claim 1.
24:
- A method for chemical fastening of a construction element in a borehole, the method comprising:
- curing the multi-component resin system according to claim 1 in the borehole, to chemically fasten the construction element.
25:
- A method for improving pull-out values of a chemical anchor, the method comprising:
- curing the multi-component resin system according to claim 1.
26:
- The method according to claim 25, wherein the method improves the pull-out strength of the chemical anchor in cleaned boreholes.
Dependencies are inferred from the claim text.