POLYETHYLENE COMPOSITION FOR WATER PIPES WITH IMPROVED CHLORINE RESISTANCE

The present invention is directed to the use of compound (A) and compound (B) in a polyolefin composition for increasing the lifetime of a pipe made of said polyolefin composition which is in permanent contact with chlorinated water, wherein compound (A) has the following formula (I): 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, and - the entire molecule does not comprise an ester group, wherein compound (B) has the following formula (II): 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.