| abstract |
A multi-layer water pipe for mining operations having outer and inner layers. The inner layer of the multi-layer water pipe comprises a composition comprising a hydrogenated block copolymer of poly(phenylene ether), an alkenyl aromatic monomer and a conjugated diene and an organophosphate-containing flame retardant , optionally homopolystyrene, rubber-modified polystyrene, or a combination comprising at least one of the foregoing. The outer layer of the multi-layer water pipe comprises a composition comprising high density polyethylene, an antistatic agent, a flame retardant and a flame retardant synergist. The multilayer water pipe exhibits the desired balance of impact strength, tensile strength, burst pressure resistance, static pressure resistance, flame retardancy, and outer surface resistance. |