Patent ID: 8443846

Claim:
A pipe comprising a polyolefin composition, comprising a) a polyolefin base resin (A), b) an antioxidant (B) according to formula (I): wherein R 1 , R 2 , R 3 , R 4 and R 5 independently are H, or non-substituted or substituted aliphatic or aromatic hydrocarbyl radicals which may comprise heteroatoms, c) an antioxidant (C) according to formula (II): wherein R 6 , R 7 and R 8 independently are non-substituted or substituted aliphatic or aromatic hydrocarbyl radicals which may comprise OH-groups, X 1 , X 2 , and X 3 independently are H or OH, with the provisio that at least one of X 1 , X 2 and X 3 is OH, the entire molecule does not comprise an ester group, and d) an antioxidant (D) according to formula (III): wherein R and R′ is the same or different, and R and R′ independently comprise at least 6 carbon atoms and may comprise heteroatoms.