| 摘要 |
<p>There is disclosed a process for the preparation of a polyisobutyl hydroxyaromatic compound wherein the polyisobutyl substituent has an average molecular weight in the range of 400 to 5000, which comprises alkylating a hydroxyaromatic compound in the presence of an alkylation catalyst with a suitable polyisobutene containing at least 70% of a methyvinylidene isomer.</p> |
