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US 5,496,383 AGranted
Fuel additives, their preparation and gasoline engine fuels containing the additives
AssigneeBASF SE
InventorsLothar Franz, Juergen Mohr, Peter Schreyer, Juergen Thomas, Knut Oppenlaender, Wolfgang Guenther
Life of this patent
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Abstract
Halogen-free fuel additives based on a long-chain hydrocarbon having a polar terminal group are obtained by reacting a hydroformylated olefin with a polyamine and hydrogenating the reaction product.
Claims7
A fuel additive based on a long-chain hydrocarbon having a polar terminal group, obtained by
- a) hydroformylating a long-chain olefin having a number average molecular weight of from 250 to 5,000 in the presence of CO and H.sub.2 at from 80.degree. to 200.degree. C. and CO/H.sub.2 pressures of up to 600 bar,
- b) reacting the reaction product with a polyamine of the following formula I ##STR3## where m is 1-10, R.sup.1 is branched or straight-chain alkylene of 2 to 6 carbon atoms and the radicals R.sup.1 may be different from one another when m is >1, R.sup.2 and R.sup.3 independently of one another are each hydrogen, alkyl of 1 to 6 carbon atoms or hydroxyalkyl of 1 to 6 carbon atoms, or R.sup.2 and R.sup.3, together with the nitrogen to which they are bonded, form a heterocyclic ring which may have further heteroatoms,
- and then
- c) catalytically hydrogenating the resulting reaction product in the presence of H.sub.2 and in the presence or absence of NH.sub.3.
1 more element
A process for the preparation of a fuel additive which comprises:
- a) hydroformylating a long-chain olefin having a number average molecular weight of from 250 to 5,000 in the presence of CO and H.sub.2 at from 80.degree. to 200.degree. C. and CO/H.sub.2 pressures of up to 600 bar,
- b) reacting the reaction product of step a) with a polyamine of the formula I ##STR4## where m is 1-10, R.sup.1 is branched or straight-chain alkylene of 2 to 6 carbon atoms and the radicals R.sup.1 may be different from one another when m is >1, R.sup.2 and R.sup.3 independently of one another are each hydrogen, alkyl of 1 to 6 carbon atoms or hydroxyalkyl of 1 to y carbon atoms, or R.sup.2 and R.sup.3, together with the nitrogen to which they are bonded, form a heterocyclic ring with may have further heteroatoms and then
- c) catalytically hydrogenating the resulting reaction product of step b) in the presence of H.sub.2 and in the presence or absence of NH.sub.3.
Dependencies are inferred from the claim text.