2,4-bismaleimdothioluene - for homo - and copolymers and for cross-linking elastomers

摘要

(I) is claimed as a new cpd. When heated to 220 degrees C, I forms the homopolymer. It can also be used for cross-linking elastomers and for copolymerisation with vinyl cpds., e.g. styrene. I is prepd. from 2,4-diaminotoluene and maleic anhydride via the bismaleamic acid, which is cyclised in the presence of Ac2O.