FIELD: chemistry.
SUBSTANCE: proposed composition of vulcanisation promoter contains modified calcium carbonate (A), treated on the surface of a fatty acid or rosin acid, as well as silic acid, inorganic filler (B), with oil adsorption from 50 to 300 ml/100g and a vulcanisation promoter component (C), which is liquid at room temperature. The ratio (A):(B) lies between 30:70 and 95:5, and content of (C) ranges from 30 to 80%, of the total composition of the promoter. The rubber composition, in which the powdered white composition of vulcanisation promoter and precipitated silica are added to rubber, contain the vulcanisation promoter (C) from 1 to 40 wt pts per 100 wt pts of precipitated silica.
EFFECT: composition is stable during storage and provides for resistance of its mixture with rubber or something similar to heat build-up.
6 cl, 3 tbl, 5 ex
