STABILISED COMPOSITIONS BASED ON DYNAMIC VULCANISATION THERMOPLASTIC ELASTOMER FOR USE IN BARRIER ARTICLES FOR FLUID MEDIA Russian patent published in 2013 - IPC C08L23/28 C08L51/00 C08L77/00 C08L101/00 C08K5/00 B60C1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a composition based on a thermoplastic elastomer for use in articles as a barrier layer for fluid media, suitable for use in industrial articles such as inner layers of car tyres and hoses and a method of producing said composition. The composition contains dispersed particles of at least a first elastomer and not more than 20 wt% dispersed particles of at least a second elastomer. The first elastomer includes a halogenated, isobutylene-containing elastomer and the second elastomer has glass transition point lower than -30°C and contains at least one functional group capable of reacting and grafting to a thermoplastic resin with a functional group selected from a group consisting of maleic anhydride, acyl lactam, which reacts with amine functional groups contained in polyamides. Particles of at least the first and at least the second elastomer are dispersed in a continuous phase of a thermoplastic resin having Young's modulus higher than 500 MPa and air permeability coefficient less than 60×10^-12 cm³/cm² s cm Nd (at 30°C). The composition or said at least first elastomer further contains at least one photochemical radiation-induced decomposition stabiliser. The composition is obtained by dynamic vulcanisation in a mixing extruder, a method of creating shearing of a polymer and elastomeric components at high temperature.

EFFECT: obtained composition remains thermoplastic, and articles made therefrom can be moulded by conventional moulding, extrusion or calendering.

20 cl, 2 dwg, 7 tbl