METHOD OF PRODUCING THERMOPLASTIC ELASTOMER COMPOSITION Russian patent published in 2009 - IPC C08J3/24 C08L23/06 C08L23/12 C08L23/16 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing thermoplastic elastomer compositions, realised through dynamic vulcanisation of a mixture of components of a composition, meant for preparing sealing components, tubing, insulation for components of electric devices, used in aviation, automobile, cable and other industries. The method is realised by loading an ethylene-propylene-diene copolymer and target additives at the first step. Temperature is raised to 120°C and vulcanising agents are added. At temperature of 150°C, thermoplastics are added - polyethylene and polypropylene in amount of 30-50 wt % of their total content and stirring is done at temperature of 190°C. At the second step the remaining amount of thermoplastics is added to the obtained mixture.

EFFECT: obtaining a thermoplastic elastomer composition with improved mechanical, rheological and electrical characteristics.

3 cl, 1 tbl, 3 ex