METHOD OF PRODUCING GRANULAR MODIFIED SOOT, SOOT FOR THERMOPLASTIC POLYMERS AND POLYMER COMPOSITIONS BASED ON SAID SOOT Russian patent published in 2011 - IPC C08K3/04 C09C3/10 C09C1/58 B29B9/12 B29B9/16 

FIELD: chemistry.

SUBSTANCE: method of producing granular modified soot involves mixing, while heating, powder thereof with a water-soluble modifying agent - polyether with molecular weight between 290 and 3000 with hydroxyl number between 50 and 800 mg KOH/g in amount of 1.0-5.0% of the weight of the soot, granulation of the mixture followed by drying the wet granules at 285-320°C for a period of time which is 5-30% longer than needed to achieve moisture content of 0.5%. The obtained granular soot contains 2-8% volatile substances, where the content of oxygen in the volatile substances is not less than 71%, and content of oxygen in quinine and phenol groups is not less than 74%.

EFFECT: polymer compositions based on said soot have high resistance to UV radiation, which allows their use in making articles in contact with drinking water and food products.

6 cl, 6 tbl, 12 ex