摘要:
Reaction products of amino-alkylenecarboxylic acids with polyoxyalkylene compounds are used as paraffin dispersants for mineral oil middle distillates.
摘要:
Polymer blends contain a) from 10 to 90% by weight of an imide of a copolymer based on an .alpha.-olefin and on an ethylenically unsaturated dicarboxylic acid and a polyamine and b) from 10 to 90% by weight of a copolymer which differs from a) and contains at least two monomers selected from the group consisting of ethylene, acrylates, vinyl esters, vinyl ethers and ethylenically unsaturated dicarboxylic acids or dicarboxylic acid derivatives, and are used as additives for mineral oil middle distillates.
摘要:
Mineral oil middle distillate compositions based on hydrocarbon mixtures whose boiling range begins at above 160.degree. C. and ends at below 420.degree. C. contain, as paraffin dispersants, reaction products of aminoalkylenecarboxylic acids with primary or secondary long-chain amines.
摘要:
Modified copolymers which are suitable as paraffin dispersants and are obtainable by reacting a copolymer of an ethylenically unsaturated dicarboxylic acid and/or a dicarboxylic acid derivative and a diketene of the general formula I ##STR1## where R.sup.1 and R.sup.2, independently of one another, are each hydrogen or C.sub.1 -C.sub.30 -alkyl, with an amine of the general formula II ##STR2## where m may be from 0 to 100, n from 0 to 5 and x from 0 to 5, R.sup.3, R.sup.4 and R.sup.5, independently of one another, are each hydrogen or C.sub.1 -C.sub.5 -alkyl and A is NR.sup.6 R.sup.7 or C.sub.2 -C.sub.30 -alkoxy, and at least one of the substituents R.sup.6 or R.sup.7 is not hydrogen and is C.sub.1 -C.sub.30 -alkyl or alkenyl or a polyether radical ##STR3## where R.sup.8 and R.sup.9 are each hydrogen or C.sub.1 -C.sub.5 -alkyl and p is from 1 to 100, with the proviso that, when n is 0, A is NR.sup.6 R.sup.7, their preparation and use, and mineral oil middle distillates which contain these modified copolymers.
摘要:
Copolymers comprise a) from 1 to 65 mol % of at least one diketene of the general formula I ##STR1## where R.sup.1 and R.sup.2, independently of one another, are each hydrogen or C.sub.1 -C.sub.30 -alkyl, b) from 30 to 70 mol % of at least one ethylenically unsaturated dicarboxylic acid or one dicarboxylic acid derivative, c) from 0.5 to 60 mol % of at least one ethylenically unsaturated hydrocarbon and d) up to 20 mol % of at least one further ethylenically unsaturated monomer, modified copolymers are obtainable by reacting these copolymers with NH-, SH- and/or OH-functional compounds, and the unmodified or modified copolymers are used as additives for mineral oil middle distillates.
摘要:
A mixture contains(a) from 10 to 90% by weight of at least one imide of a copolymer based on an .alpha.-olefin and an ethylenically unsaturated dicarboxylic acid and a polyamine and(b) from 10 to 90% by weight of at least one reaction product of a poly(C.sub.2 -C.sub.20 -carboxylic acid) having a tertiary amino group with secondary aminesand is used as a paraffin dispersant in mineral oil middle distillates.
摘要:
A copolymer of the monomers of the following components A to C and, if required, D, the total amount by weight of which is 100 mol %: a: from 20 to 80 mol % of at least one ethylenically unsaturated dicarboxylic acid or of an anhydride, ester and/or amide thereof as component A, b: from 1 to 79 mol % of at least one diketene of the general formula (I) where R1 and R2 independently are each hydrogen or C1-C30-alkyl, as component B, c: from 1 to 79 mol % of at least one vinyl ester, alkyl (meth)acrylate, (meth)acrylonitrile or mixtures thereof as component C and d: from 0 to less than 0.5 mol % or, if at least 20 mol % of component C are present, from 0 to 20 mol % of at least one further olefinically unsaturated monomer as component D, is used as a flow improver in mineral oil middle distillates.
摘要:
Ethylene-based copolymers which are suitable as flow improvers for mineral oil middle distillates are composed of a) from 50 to 94% by weight of ethylene, b) from 3 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids, c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the general formula I ##STR1## where R.sup.1 is hydrogen or methyl, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen or C.sub.1 -C.sub.6 -alkyl and A.sup.1 is straight-chain or branched C.sub.2 -C.sub.10 -alkylene, and d) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c), copolymers in which monomer b) is vinyl acetate and which have a number average molecular weight of from 5000 to 50,000 being excluded, or are composed of a') from 50 to 95.5% by weight of ethylene, b') from 4 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids, c') from 0.5 to 20% by weight of one or more vinylimidazoles of the general formula II ##STR2## where R.sup.4, R.sup.5 and R.sup.6 may be identical or different and are each hydrogen or C.sub.1 -C.sub.6 -alkyl, or from 0.5 to 20% by weight of one or more aminoalkyl vinyl ethers of the general formula III R.sup.7 R.sup.8 N--A.sup.2 --O--CR.sup.9 .dbd.CR.sup.10 R.sup.11(III) where R.sup.7 and R.sup.8 are each C.sub.1 -C.sub.6 -alkyl, R.sup.9, R.sup.10 and R.sup.11 are each hydrogen or C.sub.1 -C.sub.6 -alkyl and A.sup.2 is C.sub.2 -C.sub.6 -alkylene, and d') from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a') to c').
摘要:
An ethylene-based copolymer which is suitable as a flow improver for mineral oil middle distillates and is composed of a) from 50 to 94% by weight of ethylene; b) from 3 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids; c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the formula I ##STR1## which R.sup.1 is hydrogen or methyl, R.sup.2 and R.sup.3 are identical or different and are each hydrogen or C.sub.1 -C.sub.6 -alkyl and A.sup.1 is straight-chain or branched C.sub.2 -C.sub.10 -alkylene; and d) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c), wherein copolymers containing vinyl acetate as monomer b) and having a number average molecular weight of from 5,000 to 50,000 are excluded from the scope of the copolymer.
摘要:
Crude oil middle distillates with improved cold flow properties, containing small amounts ofA. conventional flow improver on an ethylene base, andB. copolymers which consist of 10 to 95 mol-% of one or more acrylacrylates or alkylmethacrylates with C.sub.1 - to C.sub.26 -alkyl chains, and of 5 to 90 mol-% of one or more ethylenically unsaturated dicarboxylic acids or their anhydrides, where the copolymer is reacted to a large extent with one or several primary or secondary amines into the monoamide or amide/ammonia salt of dicarboxylic acid, and the quantitative proportion of A to B is from 40 to 60 up to 95 to 5.