N,N-BIS(-BETA-HYDROXYALKYL)-ARYL AMINE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE AS HARDENING ACCELERATORS

1. Compounds of the formula see diagramm : EP0084784,P10,F1 wherein Q denotes see diagramm : EP0084784,P10,F2 or see diagramm : EP0084784,P10,F3 R**1 denotes hydrogen or methyl, R**2 denotes N-C1 -C18 -alkylcarbamoyl, N-C6 -C12 -arylcarbamoyl, the radical, without the hydroxyl group, of an optinally chlorine- or C1 -C4 -alkyl-substituted aliphatic, saturated or mono- to tri-unsaturated, cycloaliphatic, araliphatic, heterocyclic or aromatic carboxylic acid containing up to 21 C atoms or hydrogen, R**3 to R**5 denote hydrogen, C1 -C18 -alkyl, C5 -C8 -cycloalkyl, C5 -C14 -aryl, fluorine, chlorine, bromine, iodine, or in the case where R**3 = R**5 = H R**4 also denotes 2-phenylpropyl or 2-(4'-N,N-dimethylaminophenyl)- 2-propyl, R**6 denotes hydrogen, C1 -C18 -alkyl, C6 -C12 -aryl, hydroxymethyl, chloromethyl, C1 -C6 -alkoxymethyl, C6 -C12 -aryloxymethyl or C2 -C6 -acyloxymethyl, m denotes a number from 1 to 3, n denotes zero or a number from 0 to 3, and m + n denotes a number from 1 to 5, with the proviso that at least one of the radicals R**3 , R**4 , and R**5 must be an alkyl radical if another of the radicals R**3 , R**4 and R**6 is a halogen radical.