METHOD FOR PRODUCING POLYISOBUTYLPHENOLS

摘要

The invention relates to a method for producing polyisobutenylphenols by alkylation of an aromatic hydroxy compound with substantially singly ethylenically unsaturated polyisobutylenes substantially homopolymers in the presence of a Lewis Acid alkylation catalyst. The method is characterised in that the polyisobutylene contains at least 35 mol- % of a double bond in position beta .