abstract |
The invention relates to a linear, neodymium-catalyzed polybutadiene of high molecular weight, having a high content of cis-1,4 units of >95% and a low content of 1,2-vinyl of <1% and a low molar mass distribution index (MDI), wherein the Mooney viscosity (ML 1+4 100°C) of the polybutadiene is 70-90 and the molar mass distribution index of the polybutadiene is less than 10. |