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US 5,663,435 AGranted
Reaction products of aminoalkylenecarboxylic acids and mineral oil middle distillates which contain them
AssigneeBASF SE
InventorsGabriele Dralle-Voss, Knut Oppenlander, Klaus Barthold, Bernd Wenderoth, Wolfgang Kasel
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Abstract
Reaction products of amino-alkylenecarboxylic acids with polyoxyalkylene compounds are used as paraffin dispersants for mineral oil middle distillates.
Claims4
An aminoalkylenecarboxylic acids of the general formula I or II ##STR8## where A is straight-chain or branched alkylene of 2 to 6 carbon atoms or a radical of the formula III ##STR9## X is ##STR10## or a radical of the formula IV ##STR11## where R.sup.1 is hydrogen or a straight-chain aliphatic C.sub.10 -C.sub.30 radical,
- R.sup.2 is a straight-chain aliphatic C.sub.10 -C.sub.30 radical,
- R.sup.3 and R.sup.4 are each hydrogen, methyl or ethyl,
- m and n are each from 1 to 5,
- x is from 0 to 3,
- y is from 1 to 100 and
- B is hydroxyl or C.sub.1 -C.sub.30 -alkoxy or is naphthyloxy or phenoxy which is unsubstituted or monosubstituted to tri-substituted by C.sub.1 -C.sub.18 -alkyl, or is C.sub.1 -C.sub.30 -alkylcarboxy or C.sub.1 -C.sub.30 -alkenylcarboxy, or is amino which is monosubstituted by a straight-chain aliphatic C.sub.1 -C.sub.30 radical, or is amino which is disubstituted by straight-chain aliphatic C.sub.1 -C.sub.30 radicals, or is C.sub.1 -C.sub.30 -alkylamido or alkenylamido or a group of the formula V ##STR12## where the variables have the abovementioned meanings, with the proviso that X is
- a) at least one ##STR13## group and b) at least one group of the formula IV, both conditions being fulfilled.
4 more elements
Dependencies are inferred from the claim text.