Patent ID: 7842772

Claim:
A stabilized polyethylene comprising cross-linked silane groups, sulphonic acid, and a stabilizer, wherein the stabilizer is neutral or acidic, does not contain ester groups, and has the structure of formula (I): wherein R is an unsubstituted or substituted aliphatic or aromatic hydrocarbyl radical which may comprise heteroatoms, R′ is a hydrocarbyl radical, R″ is a hydrocarbyl radical, X 1 , X 2 and ‘X 3 ’ ‘are’ independently H or OH, wherein at least one of X 1 , X 2 and ‘X 3 ’ is OH, and n is 1 to 4; and wherein the sulphonic acid has the structure of formula (III): ArSO 3 H (III) wherein Ar is a hydrocarbyl substituted aryl group and the total compound of formula (III) contains at least 14 carbon atoms.