Process for the preparation of elastic compact or cellular moulded articles on the basis of elastomers containing N-benzylurea groups, such elastomers and N-benzyl-polyoxyalkylene-polyamines suitable therefor

摘要

The invention relates to a process for the production of elastic, compact or cellular mouldings based on elastomers containing bonded N-benzylurea groups, by reacting … …  a) at least one organic and/or modified organic polyisocyanate with …  b) N-benzylpolyoxyalkylenepolyamines or mixtures of N-benzylpolyoxyalkylenepolyamines and polyoxyalkylenepolyamines containing 2 to 4 primary amino groups and …  c) at least one alkyl-substituted aromatic polyamine having a molecular weight of up to 500, in the presence or absence of …  d) catalysts and optionally …  e) blowing agents, …  f) assistants and/or …  g) additives, … and to the N-benzylpolyoxyalkylenepolyamines and mixtures of N-benzylpolyoxyalkylenepolyamines and polyoxyalkylenepolyamines containing 2 to 4 primary amino groups which can be used for this purpose, and to the elastomers prepared.