A METHOD FOR CONTROLLING DISPERSION SIZE OF ELASTOMER IN THERMOPLASTIC ELASTOMER COMPOSITION

摘要

A method for controlling a dispersion size of an elastomer in a thermoplasti c elastomer composition having improved durability and impermeability obtained by melt-mixing (A)a halogenated isobutylene elastomer, (B) polyamide and (C) a dispersion aid, anddynamically vulcanizing the resultant blend to form the dynamically vulcanized polymer blend, wherein the halogenated isobutylene elastomer is dispersed in the polyamide matrix at a volume-average dispersio n diameter of less than 2.0 ~m.