| abstract |
PURPOSE: To obtain the titled polymer having improved heat stability and storage stability and raised impact resilience and fracture strength of vulcanized material, by coupling a polymer with a halogenated tin compound and further reacting it with an N,N-disubstituted amino aromatic compound. n CONSTITUTION: A conjugated diene compound (e.g. 1,3-butadiene, etc.) or the conjugated diene compound and a vinyl aromatic compound (e.g. styrene, etc.) are polymerized in a hydrocarbon solvent by the use of an organolithium compound (e.g. n-butyllithium, amyllithium, etc.) as an initiator, reacted with 0.2W1.0 halogen atomic equivalent based on 1g atomic equivalent of lithium of a halogenated tin compound (e.g. tetrachlorotin, etc.) and further reacted with 0.1W1.0mol based on 1g atom equivalent of Li of an N,N-disubstituted amino aromatic compound (e.g. p-dimethylamino-benzophenone, etc.). n COPYRIGHT: (C)1987,JPO&Japio |