| abstract |
A process for preparing a modified polyetheramine (XRC (O) NH) bR 'by reacting a polyetheramine (H2N) bR' with a halogenated acyl halide XRC (O) X, wherein: (a) supplying a polyetheramine (H2N) bR '(where R' is a polyether and b = 1, 2 or 3) and a halogenated acyl halide XRC (O) X (where X is halogen, preferably Cl or Br, R represents an alkyl residue, possibly substituted, or an aromatic residue, possibly substituted), (b) the two reactants are mixed in the presence of a base, preferably Et3N and / or NaOH, and the mixture is allowed to react, preferably with a temperature below 35 ° C, preferably below 20 ° C, and even more preferably between 0 ° C and 10 ° C, preferably in the absence of solvent (and preferably in the absence of DMF and THF) . |