POLYOLEFINS HAVING TERMINAL ALDEHYDE OR HYDROXYL SUBSTITUENTS AND DERIVATIVES THEREOF

摘要

A polymer having a terminal aldehyde or hydroxyl substituent which may be used directly or in a derivative form as a dispersant for both fuel and lubricating oil compositions, wherein the polymer has a Mn of about 300 to 10,000, and is derived from a polyolefin which is derived from a monomer of the formula: H2C-CHR4, wherein R4 is hydrogen or a straight or branched chain alkyl radical, and wherein the polyolefin preferably has at least about 30 % terminal vinylidene unsaturation. Particularly desirable also are alkylamino derivatives formed by either a single step aminomethylation process or a two step hydroformylation and reductive amination process in the preferred polyolefins. Polyene(diene)-containing copolymers and terpolymers may also be used to prepare the polymer.