METHOD FOR PRODUCING SYNTHETIC RESIN Russian patent published in 2023 - IPC C08F240/00 C08F8/46 

FIELD: chemical industry.

SUBSTANCE: method for producing polymeric petroleum resins initiated by polymerization of the fraction of liquid products of pyrolysis C₉ in the presence of a polymerization initiator is described, characterized in that a modifier premix is prepared before polymerization at a temperature of 80°C and the tall oil is stabilized, after which the fractions of the liquid pyrolysis products C9_, the modifier premix and the tall oil are mixed and a polymerization initiator is introduced into the reaction mixture, the reaction mixture is polymerized at a temperature of 130-150°C for 3-3.5 hours when bubbling air through the reaction mixture with a volumetric flow rate of 10-13 m³ /h, and maleic anhydride is used as a modifier premix, and cobalt salts of fatty acids are used as a polymerization initiator.

EFFECT: increase in the yield of the finished product and its quality.

1 cl, 2 tbl