| abstract |
Polyoxyalkylene amines, preferably having the formulan n wherein R is CH₃ or C₂H₅, R′ is H, CH₃ or C₂H₅, x is 1 - 25, y is 1 - 25 and z is 0 - 24, ncan be prepared byn a) reacting (i) a polyoxyalkylene glycol having secondary terminal hydroxy groups with (ii) an oxymethylene-yielding reagent, in the presence of a catalyst, and b) aminating the resulting reaction product. n The use of the oxymethylene-yielding reagent enables good control of the molecular weight of the amine. The resulting amines are effective curing agents for epoxy resins. |