Basf Aktiengesellschaft

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Dieter Franz

Franz Merger

Hans Peter Rath

Wolfgang Harder

Rudolf Kummer

Herbert Mueller

Helmut Mach

Claus-Ulrich Priester

Peter Pfab

Juergen Hartig

Dieter Voges

Martin Brudermueller

Peter Hettinger

Peter Wahl

A process for purifying crude pyrroles obtained in the preparation of pyrroles of the general formula I ##STR1## where R is hydrogen or a C.sub.1 -C.sub.6 -alkyl radical, which comprises treating the mixture containing the crude pyrrole with an acid or an activated carboxylic acid derivative and removing the pyrrole from the mixture by distillation at reduced pressure and at a bottom temperature of up to 160.degree. C.

Purification of crude pyrroles

A process for preparing mixtures of 3-aminopropionitrile of the formula I

Preparation of mixtures of 3-aminopropionitrile and ethylene cyanohydrin

3-Dialkylaminopropionitriles ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 -alkyl which may furthermore be bonded to form a 5-membered or 6-membered ring, bis-(2-cyanoethyl) ether II

Joint preparation of 3-dialkylaminopropionitriles, bis-(2-cyanoethyl)

N-Ethylpiperazine is isolated by distillation from a mixture consisting per 100 kg of

Distillative isolation of N-ethylpiperazine in the presence of water

Fuel motor compositions and lubricant compositions contain small amounts of one or more polybutyl or polyisobutyl alcohols of the formula (I)

Motor fuel or lubricant composition containing polybutyl or polyisobutyl

The fuel or lubricant composition proposed contains one or more polybutyl or polyisobutylamines of the general formula I ##STR1## where R.sub.1 is a polybutyl- or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene and R.sub.2 and R.sub.3 are identical or different and are each hydrogen, an aliphatic or aromatic hydrocarbon, a primary or secondary, aromatic or aliphatic aminoalkylene radical or polyaminoalkylene radical, a polyoxyalkylene radical or a hetaryl or heterocyclyl radical, or, together with the nitrogen atom to which they are bonded, form a ring in which further hetero atoms may be present.

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Ludwigshafen, Germany

Dieter Franz