| abstract |
FIELD: chemistry. n SUBSTANCE: invention relates to BR-Nd wet concentrate comprising neodymium-catalyzed polybutadiene having a high content of cis-1.4 units >95% and a low content of 1.2-vinyl <1%, with a narrow polydispersity of less than 3, with a Mooney viscosity of (ML 1+4 100°C) from 30 to 90 EM, with high linearity coefficient (the ratio of solution viscosity to Mooney viscosity) from 3 to 10 mPa/EM and Mooney relaxation in 30 s from 2 to 12%, obtained by polymerization in solution, at least one carbon black, wherein the carbon black has an iodine value (IV) from 85 to 210 mg/g as, measured by ASTM D1510-1304, and an oil absorption number (OAN) from 75 to 150 ml/100 g, measured by ASTM D2414, and oil. n EFFECT: improved properties. n 21 cl, 3 tbl |