Bayer Aktiengesellschaft

Rolf Cornils

Otto Benn

Gerhard Giersiepen

A process for the production of rubber powder having a particle size of from about 200 to 1500 .mu. and a powdering agent content of less than 7% by weight by grinding rubber particles, wherein the rubber is initially mechanically size-reduced into surface-rich and pore-rich particles, the entire quantity of powdering agent is added to the rubber particles, which are then ground at low temperature to prevent the rubber from flowing, non-adsorbed or freshly added powdering agent is adsorbed by the rubber powder in a zone following the grinding machine, and the rubber powder obtained is cooled to such an extent that no warm flow of the rubber occurs.

Growing community of inventors

Marne, Germany

Rolf Cornils