METHOD OF ROSIN PURIFICATION Russian patent published in 2015 - IPC C09F1/00 C09F1/02 

FIELD: chemistry.

SUBSTANCE: method includes: a) bringing of a rosin-containing substance, which contains rosin and sulphur compounds, in contact with an oxidative agent at a temperature from 0 to 60°C for 10 minutes to 3 hours for the oxidation of at least a part of the sulphur compounds; and b) separation of rosin from the oxidised sulphur compounds with obtaining a purified rosin-containing substance. Also described is a method of obtaining a modified rosin-containing substance by etherification, disproportionation, hydration or dimerisation of the purified rosin-containing substance with obtaining the modified rosin-containing substance.

EFFECT: non-intensive colour and weakly-expressed smell, higher temperature of softening and vitrification of the purified and modified rosin-containing substances.

16 cl, 3 tbl, 7 ex