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AssigneeBASF SE
InventorsStephan Hueffer, Peter Schwab, Klaus Fischer, Thomas Berg, Helmut Mach
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A process for the preparation of polyalkenylsuccinimide products, in particular polyisobutenylsuccinimide products, is proposed, in which a polyalkene is reacted with a maleic acid, maleic anhydride or a functional derivative thereof to give a polyalkenylsuccinic anhydride and the polyalkenylsuccinic anhydride is then reacted with an oligoamine or polyamine, the polyalkenylsuccinic anhydride either (a) first being reacted with an alcohol or phenol and, without isolation of the reaction product, then with the oligoamine or polyamine, or (b) the polyalkenylsuccinic anhydride being reacted with the oligoamine or polyamine in the presence of an alcohol or phenol and (c) if desired, the alcohol or the phenol then being removed. Novel polyalkenylsuccinimide products, in particular polyisobutenylsuccinimide products, and fuel additives are also proposed.
A process for the preparation of a polyisobutenylsuccinimide product, comprising reacting a polyisobutene with maleic acid, maleic anhydride or a functional derivative thereof to give a polyisobutenylsuccinic anhydride and then reacting the polyisobutenylsuccinic anhydride with an oligoamine or polyamine, wherein the polyisobutenylsuccinic anhydride is either
A polyisobutenylsuccinimide product obtainable by a process comprising reacting a polyisobutene with maleic acid, maleic anhydride or a functional derivative thereof to give a polyisobutenylsuccinic anhydride and then reacting the polyisobutenylsuccinic anhydride with an oligoamine or polyamine, the polyisobutenylsuccinic anhydride either
A polyisobutenylsuccinic monoester intermediate obtained by reaction of components comprising
Dependencies are inferred from the claim text.