THERMOPLASTIC ELASTOMER COMPOSITION AND IMPROVED RUBBER GRANULATION PROCESS Russian patent published in 2008 - IPC C08L23/28 C08L77/00 C08K5/529 C08K5/13 C08J3/18 

FIELD: polymer materials.

SUBSTANCE: invention relates to thermoplastic elastomer composition for manufacturing products such as films, which composition contains dynamically curable mixture of (A) halogenated isobutylene/p-methylstyrene copolymer, (B) polyamide, and (C) antioxidant having melting point above 70°C and below 200°C, granulated elastomer (A) obtained by granulation in presence of antioxidant (C) as granulator being dispersed as a domain in the continuous phase of polyamide (B) and composition containing (A) and (B) components being dynamically cured. Thus obtained film is characterized by better stretching than film made from composition containing curing agent as granulator and by excellent durability and stability at low temperature as compared to film made from talc-containing composition.

EFFECT: increased durability, heat resistance, elasticity and air impermeability.

7 cl, 3 tbl, 5 ex