Inhibitor combination, resin mixture containing same and use of same

Use of a combination comprising a pyrimidine-5-ol derivative (I) and a phenol derivative (II) for chemical fastening systems, is claimed. Use of a combination comprising a pyrimidine-5-ol derivative of formula (I) and a phenol derivative of formula (II) for chemical fastening systems, is claimed. R 1>, R 2> : H or 1-20C alkyl; X : -OR 3>or -NR 5> 2; R 5> : 1-20C alkyl or 2-4C polyalkylene oxide; R : H, 1-18C alkyl, -OR 6>or -NR 6> 2; R 6> : 1-20C alkyl; R 3> : H or 1-18C alkyl; and R 4> : 1-18C alkyl. Independent claims are also included for: (1) a resin mixture comprising at least one radically polymerizable compound, optionally a reactive diluent and an agent for adjusting the reactivity and gelling time, where the agent is the combination of (I) and (II); (2) a reaction resin mortar comprising the above resin mixture and inorganic additives; (3) a two-component mortar system comprising the reaction resin mortar as a component A and a separately arranged hardener as a component B for inhibiting the reaction; and (4) a patrone, a cartridge or a foil pouch containing the two-component mortar system including two or more chambers that are separated from each other, in which the reaction resin mortar or the hardener is arranged.