Lubricating oil additives

摘要: A compound comprising i) 20-80 mol % of at least one monoethylenically unsaturated dicarboxylic acid or anhydride thereof, ii) 5-30 oligomer an optionally branched olefin having 2 to 20 carbon atoms, average molecular weight Mw 300-5000, iii) 10-60 ethylenically 10 a mono-,di- tri- ester glycerol (1, 2, 3 propanetriol) in which the carboxylic residues is derived from said acid, oil, hydrolysed, containing 30 wt disclosed, has both dispersant and VI improving properties lubricating oils.