Isocyanate-amine-based chemical anchor with improved storage stability, and use thereof
AssigneeHilti Aktiengesellschaft
InventorsChristian Plenk, Memet-Emin Kumru, Thomas Bürgel, Alexander Bornschlegl
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Abstract
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.
Claims16
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 the 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 contains a molecular sieve as a drying agent.
A method for improving the storage stability of an isocyanate component, the method comprising:
- mixing a molecular sieve into a multi-component resin system based on isocyanate amine adducts comprising an isocyanate component and an amine component for chemical fastening.
Dependencies are inferred from the claim text.