| abstract |
The present invention relates to the use of a composition comprising: - from 70 to 91% by weight of at least one semicrystalline polyamide, - from 5 to 25% by weight of at least one polyolefin comprising an epoxy function, anhydride or acid, introduced by grafting or copolymerization, and from 3 to 20% by weight of at least one plasticizer, from 0.05 to 5% by weight of at least one copper complex stabilizer, at least one catalyst, said composition being free of alkali metal halide, as a sealing layer in a pipe containing oil or gas, this pipe being used in the exploitation of oil or gas deposits under the sea (offshore). |