THERMOPLASTIC ELASTOMER COMPOSITION, CONTAINING VULCANISED ELASTOMER DISPERSIONS WITH HIGH VISCOSITY Russian patent published in 2008 - IPC C08L23/28 C08L77/00 C08K13/02 C08K5/17 

FIELD: chemistry.

SUBSTANCE: invention pertains to thermoplastic compositions, which have better mechanical properties and permanent strength and to a pneumatic tyre, containing such a composition. The elastomer composition is a dynamic vulcanised mixture (A) of halogenated isobutylene elastomer component, (B) polyamide component, (C) amine component and common additives. Elastomer (A) is dispersed in form of a domain in a continuous phase of polyamide (B). Amine component (C) is chosen from a group consisting of secondary diamines and a mixture of the given secondary diamines and tertiary amines. The amine component is taken in a quantity such that, viscosity of the isobutylene elastomer in conjunction with the amine component is the same as the viscosity of the polyamide component during dynamic vulcanisation.

EFFECT: improved impermeability of the thermoplastic elastomer composition, its mechanical properties at low temperature and permanent strength.

3 cl, 7 tbl, 15 ex