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

{
  "publication_number": "US2024174910A1",
  "country": "US",
  "kind": "A1",
  "title": "Isocyanate-amine-based chemical anchor with improved performance, and use thereof",
  "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 is 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.",
  "claims": [
    "1. A multi-component resin system, containing: an isocyanate component which comprises at least one aliphatic and/or aromatic polyisocyanate having an average NCO functionality of 2 or more, and an amine component which comprises 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 a 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 additionally contains a molecular sieve. 2. The multi-component resin system according to claim 1, wherein the molecular sieve is a zeolite. 3. The multi-component resin system according to claim 2, wherein the zeolite is selected from the group consisting of zeolte A (Na 12 ((AlO 2) 12 (SiO 2) 12)·27 H 2 O: K 12 ((AlO 2) 12 (SiO 2) 12)·27 H 2 O), zeolite X (Na 86 [(AlO 2) 86 (SiO 2) 106]·264 H 2 O), zeolite Y (Na 56 [(AlO 2) 56 (SiO 2) 136]·250 H 2 O), zoolite L (K 9 [(AlO 2) 9 (SiO 2) 27]·22 H 2 O), mordenite (Na 8 7 [(AlO 2) 8 7 (SiO 2) 39 3]·24 H 2 O), zeolite ZSM 5 (Na 0.3 H 3.8 [(AlO 2) 4.1 (SiO 2) 91 9]), zeolite ZSM 11 (Na 0.1 H 1 7 [(AlO 2) 1 8 (SiO 2) 94.2]). 4. The multi-component resin system according to claim 1, wherein the molecular sieve is present as a powder, granular material, or paste. 5. The multi-component resin system according to claim 1, wherein the molecular sieve is contained in an amount of 0.1 to 60 wt. %. based on a total weight of the multi-component resin system. 6. The multi-component resin system according to claim 1, wherein both the isocyanate component and the amine component comprise the at least one filler and the at least one rheology 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/or 2,1-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. 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 (H 6 XDI), bis(isocyanatomethyl)norbornane (NBDI), 3(4)-isocyanatomethyl-1-methyl-cyclohexyl isocyanate (IMCI), 4,4′-bis(isocyanatocyclohexyl)methane (H 12 MDI), and mixtures thereof. 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 mixtures 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 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. 16. A method for increasing the pull-out values of a chemical anchor, the method comprising: mixing a molecular sieve into a multi-component resin system based on isocyanate amine adducts for chemical fastening. 17. A method for chemical fastening of a construction element in a mineral substrate, the method comprising: curing the mortar composition according to claim 14 in the mineral substrate, to chemically fasten the construction element."
  ],
  "description_excerpt": "The present invention relates to a multi-component resin system for producing a mortar composition based on isocyanate amine adducts for the chemical fastening of construction elements. The invention also includes a mortar composition based on isocyanate amine adducts produced from the multi-component resin system. The present invention also relates to a method for the chemical fastening of construction elements in mineral substrates and to the use of a mortar composition based on the isocyanate amine adducts for the chemical fastening of construction elements in mineral substrates. Binder systems based on radically curing compounds such as methacrylate resins or based on epoxy resins reacted with amine curing agents are usually used to produce mortar compositions for the chemical fastening of construction elements, such as anchor rods, reinforcing bars and screws in boreholes. There are numerous commercially available products based on these binder systems. However, the known binder systems have inadequate properties, especially under critical external conditions, such as elevated temperatures, uncleaned boreholes, damp or water-filled boreholes, diamond-drilled boreholes, boreholes in cracked concrete, etc.\n\nIn addition to developing and improving the existing binder systems, efforts are therefore also being made to examine binder systems other than those mentioned above with regard to their suitability as a basis for mortar compositions for chemical fastening. For example.",
  "cpc": [
    "C09K 8/44",
    "C04B 14/047",
    "C04B 2111/00715",
    "C04B 24/121",
    "C04B 26/16",
    "C04B 40/065",
    "C04B 40/0666",
    "C08G 18/289",
    "C08G 18/3865",
    "C08G 18/3868",
    "C08G 18/725",
    "C08G 18/73",
    "C08G 18/7831",
    "C08G 18/792",
    "C08K 13/02",
    "C08K 2003/343",
    "C08K 3/34",
    "C08K 3/36",
    "C08K 5/5435",
    "C08L 75/00",
    "E04B 1/38",
    "F16B 2013/147"
  ],
  "ipc": [
    "C08G 18/38",
    "C08G 18/72",
    "C08G 18/73",
    "C08G 18/78",
    "C08K 13/02",
    "C08K 3/34",
    "C08K 3/36",
    "C08K 5/5435",
    "C09K 8/44",
    "E04B 1/38",
    "F16B 13/14"
  ],
  "assignees": [
    "HILTI AG"
  ],
  "inventors": [
    "PLENK CHRISTIAN",
    "KUMRU MEMET-EMIN",
    "Bürgel Thomas"
  ],
  "filing_date": "2022-03-04",
  "publication_date": "2024-05-30",
  "priority_date": "2021-03-16",
  "application_number": "US-202218550324-A",
  "family_id": "74946995"
}