| abstract |
This invention relates to a vulcanizable layered composition comprising at least two layers and at least one tie layer, wherein the first two layers comprise a fluid permeation prevention layer and the second two layers. Comprises at least one high diene rubber and the tie layer is (1) from about 50 to about 95 weight percent of at least one halogenated isobutylene-containing elastomer, (2) about 5 to about 50% by weight of at least one high diene elastomer; (3) about 20 to about 50% by weight of at least one filler; (4) from about 0 to about 30% by weight of at least one process oil and (5) at least about 0.2 to about 15 phr (parts per hundred parts of rubber) of a curing system mixture for the elastomer; The fluid permeation preventive layer comprises: (A) an air permeability coefficient of at least 10% by weight based on the total weight of the polymer composition, 25 × 10 −12 cc · cm / cm 2 sec cmHg (30 ° C.) or less, and 500 MPa. At least one thermoplastic engineering resin component selected from the group consisting of polyamide resin, polyester resin, polynitrile resin, polymethacrylate resin, polyvinyl resin, cellulose resin, fluororesin and imide resin, B) at least 10% by weight based on the total weight of the polymer composition, 25 × 10 -12 cc cm / cm with a 2 sec cmHg (30 ℃) large air permeation coefficient than and 500MPa or less in Young's modulus, diene rubbers and their hydrides, halogen-containing rubbers, silicone rubbers, sulfur-containing rubber, fluorine rubber, hydrin, acrylic 25 × 10 −12 cc · cm / cm 2 sec cmHg (30 ° C.) comprising at least one elastomer component selected from the group consisting of rubber, ionomer and thermoplastic elastomer, preferably brominated isobutylene p-methylstyrene copolymer Or comprising a polymer composition having a lower air permeability coefficient and a Young's modulus of 1 to 500 MPa, The total amount of component (A) and component (B) is 30% by weight or more based on the total weight of the polymer composition, and elastomer component (B) is vulcanized or partially vulcanized In a state, it relates to a composition dispersed as a discontinuous phase in a matrix of the thermoplastic resin component (A) in the polymer composition. |