| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer tube which is flexible and has high antistaticity and gas barrier functionality. SOLUTION: The multilayer tube is a hollow tube which is composed of a plurality of layers in the thickness direction. The layers include an antistatic layer (a) composed of a thermoplastic resin (a1) and a polymer-type antistatic agent (a2) and a gas barrier layer (b) composed of a gas barrier resin. The thermoplastic resin (a1) may be an olefinic copolymer, a styrenic elastomer or an olefinic elastomer. The polymer-type antistatic agent (a2) may be composed of a block copolymer composed of an olefinic block and a hydrophilic block. The volume specific resistivity of the antistatic layer (a) is around 1×10<SP>6</SP>to 1×10<SP>8</SP>Ωcm. The bas barrier resin may be an ethylene-vinyl acetate copolymer with an ethylene content of 25-50 mole% and a saponification value of≥96 mole%. COPYRIGHT: (C)2007,JPO&INPIT |
