METHOD OF OBTAINING POLYMERIC PETROLEUM RESIN Russian patent published in 2009 - IPC C08F240/00 

FIELD: chemistry.

SUBSTANCE: present invention relates to the technology of producing polymeric petroleum resin. Description is given of a method of obtaining polymeric petroleum resin through cation cooligomerisation of unsaturated hydrocarbons consisting of liquid secondary fractions of pyrolysis and their block-cooligomerisation with an oily product of thermostatting the initial fraction in the presence of a catalytic complex of aluminium chloride and a promoter of olefin oxide at high temperature, with subsequent deactivation of the catalytic complex with a base and distillation of unreacted hydrocarbons. The method is distinguished by that, the catalyst deactivator used is a mixture of Lewis bases, wt %: 20.0-50.0 olefin oxide, 50.0-80.0 C₄-C₅ alcohol, 0.1-0.7 C₄-C₁₃ carbonyl compounds and 0.01-0.15 water at molar ratios oxide : alcohol : carbonyl compounds : water : aluminium chloride equal to 4.90-5.00 : 3.90-8.00 : 0.01-0.05 : 0.01-0.05 : 1.00. These bases are gradually added to the block-cooligomerisation mixture at high temperature.

EFFECT: higher output and adhesion of polymeric petroleum resin, lower bromine number of the polymeric petroleum resin, increased environmental safety of the process and simplification of technology.

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