| abstract |
This invention is directed to a new low molecular weight copolymern(The PIB/UAR copolymer) that may be prepared by reacting a low molecularnweight polyisobutene (PIB) having less than about 32 carbon atoms with annunsaturated acidic reagent in the presence of a free radical initiator. No chainntransfer agent is required to prepare the low molecular weight PIB/UARncopolymer. The PIB/UAR copolymer may be useful as is, or as annintermediate for (1) polysuccinimides, (2) detergents or dispersants for lube oilnor fuels, (3) pour point depressants and (4) surface sizing agents for paper.nThe PIB/UAR copolymer may be used by itself or as the ester, amide, imidenor metal salt derivative of the PIB/UAR copolymer. The PIB/UAR copolymernmay be liquid at ambient temperature. |