METHOD OF PRODUCING PREPOLYMER WITH TERMINAL AMINO GROUPS Russian patent published in 2011 - IPC C08F8/32 C08C19/22 C08F4/32 B01J31/04 C07D223/10 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing a prepolymer with functional groups via chemical modification of oligodiene diols, which are used in chemical industry as the basis for making tyres, industrial rubber articles and paint materials. Described is a method of producing a prepolymer with terminal amino groups, involving treating oligodiene diol with a modifier, followed by separation of the reaction product, via an oligomerisation reaction of ε-caprolactam with oligodiene diol in the presence of catalytic amounts of benzoic acid with reagents in molar ratio 4:1:0.005, respectively, in a vacuum-sealed ampoule at 170°C and reaction time of 180 minutes.

EFFECT: shorter reaction time and lower temperature and, as a result, fewer thermal-oxidative and destructive processes, possibility of using industrially available starting reagents.

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