RUBBER MIXTURES BASED ON NON-VULCANISED RUBBER AND VULCANISED RUBBER PARTICLES AND MULTIFUNCTIONAL ISOCYANATES BASED ON POLYURETHANE

摘要

The invention relates to rubber mixture, comprising non-vulcanised, double-bounded rubber (A), vulcanised rubber particles (B) and multifunctional isocyanates based on polyurethane (C). According to the invention, the proportion of component (B) in the mixture in relation to 100 wt. parts (phr) of component (A) is 1-150 wt. parts, and the proportion of multifunctional isocyanates based on polyurethane (component C) can amount to 1 - 100 wt. parts. The inventive mixtures can be used to produce vulcanised rubber and rubber shaped bodies of all types, wherein the vulcanisates thus produced comprise an advantageous combination of mechanical properties, for example, tensile stress at 300 % elongation, elongation at rupture, resistance to tearing and resistance to abrasion.