Abstract:
Graft polymers which comprise 20 to 99.9% by weight of an ethylene copolymer (base polymer) and 0.1 to 80% by weight of a graft component. The base polymer includes 30% to 95% by weight of ethylene and (1) 5% to 70% by weight of vinyl esters of saturated aliphatic C.sub.2 - to C.sub.18 -monocarboxylic acids or (2) 4% to 50% by weight of vinyl esters of saturated aliphatic C.sub.2 - to C.sub.18 -monocarboxylic acids and 1% to 20% by weight of linear or branched C.sub.3 - to C.sub.18 -monoolefins. Graft components are N-substituted alpha,beta-unsaturated dicarboxylic acid imides, dicarboxylic acid amides, dicarboxylic acid half-amides, or ammonium salts of the half-amides. The graft polymers are employed for improving the flow properties of paraffin-containing mineral oils, mineral oil distillates, and middle distillates.
Abstract:
The invention relates to an apparatus for continuously carrying out heterogeneously catalyzed chemical reactions, comprising a microwave-transparent tube, the longitudinal axis of which extends in the direction of propagation of the microwaves of a single-mode microwave applicator and which is filled with an open-cell foam that carries or is made of catalytically active species.
Abstract:
The invention provides terpolymers of ethylene, at least one ethylenically unsaturated ester and propene, which a) contain from 12.0 to 16.0 mol % of structural units derived from at least one ethylenically unsaturated ester, b) contain from 1.0 to 4.0 methyl groups derived from propene per 100 aliphatic carbon atoms, and c) have fewer than 6.5 methyl groups stemming from chain ends per 100 CH2 groups. and also their use as cold additives for middle distillates.
Abstract:
The invention thus provides terpolymers of ethylene, at least one ethylenically unsaturated ester and propene, which have i) from 4.0 to 12.0 mol % of structural units derived from at least one ethylenically unsaturated ester having a C4- to C20-alkyl radical, ii) from 0.5 to 4.0 methyl groups derived from propene per 100 aliphatic carbon atoms, and iii) fewer than 8.0 methyl groups stemming from chain ends per 100 CH2 groups.
Abstract:
The invention relates to a method for reacting synthetic poly(carboxylic acids) (A), containing at least 10 repetitive structural units of formula (I), wherein R9 represents hydrogen, a C1 to C4-alkyl group or a group of formula —CH2—COOH, R19 represents hydrogen or a C1 to C4-alkyl group, R11 represents hydrogen, a C1 to C4 alkyl group or —COOH or with amines (B) of general formula (II) HNR1R2 (II), wherein R1represents a hydrocarbon group having 3 to 50 C atoms, which can be substituted or can contain heteroatoms, and R2 represents hydrogen or a hydrocarbon group having 1 to 50 C atoms, which can be substituted or can contain heteroatoms, or R1 and R2 together form a ring with the nitrogen atom to which they are bound. According to the invention, a reaction mixture containing at least one synthetic poly(carboxylic acid) (A) and at least one amine of formula (II) in a solvent mixture which contains water, and with respect to the weight of the solvent mixture, 0.1-75 wt.-% of at least one organic solvent which can be mixed with water, said organic solvent having a dielectric constant of at least 10 when measured at 25° C., is introduced into a reaction path and is exposed to microwave radiation when it flows through the reaction path. Said reaction mixture is heated to temperatures over 100° C. by the microwave radiation in the reaction path.
Abstract:
The invention provides compositions comprising at least one alkylphenol resin (constituent I) and, based on the alkylphenol resin, from 0.05 to 10% by weight of at least one salt of an aromatic base and of a sulfonic acid (constituent II).
Abstract:
The invention relates to a continuous method for producing amides, according to which at least one carboxylic acid of formula (I) R3—COON (I) wherein R3 is hydrogen or an optionally substituted alkyl group comprising between 1 and 4 carbon atoms, is reacted with at least one amine of formula (II) HNR1R2 (II) wherein R1 and R2 are independently hydrogen or a hydrocarbon group comprising between 1 and 100 C atoms, to form an ammonium salt, and said ammonium salt is then reacted to form a carboxylic acid amide, under microwave irradiation in a reaction pipe, the longitudinal axis of the pipe being oriented in the direction of propagation of the microwaves of a monomode microwave applicator.
Abstract:
The invention relates to a continuous method for producing amides, according to which at least one carboxylic acid of formula (I) R3-COON (I), wherein R3 is an optionally substituted alkenyl group comprising between 2 and 4 carbon atoms, is reacted with at least one amine of formula (II) HNR1R2 (II), wherein R1 and R2 are independently hydrogen or a hydrocarbon radical comprising between 1 and 100 C atoms, to form an ammonium salt and/or a Michael adduct, and said ammonium salt is then reacted to form a carboxylic acid amide. under microwave irradiation in a reaction pipe, the longitudinal axis of the pipe being oriented in the direction of propagation of the microwaves of a monomode microwave applicator.
Abstract:
The invention relates to a continuous method for producing fatty acid alkanol amides, wherein at least one fatty acid of the formula (I) R3—COOH (I) where R3 is an optionally substituted aliphatic hydrocarbon radical with 5 to 50 carbon atoms, having at least one alkanol amine of the formula (II) HNR1R2 (II) where R1 is a hydrocarbon radical carrying at least one hydroxyl group and having 1 to 50 carbon atoms and R2 is hydrogen, R1 or a hydrocarbon radical having 1 to 50 carbon atoms, is reacted into an ammonia salt, and said ammonia salt is subsequently reacted in a reaction tube, the longitudinal axis thereof being disposed in the propagation direction of the microwaves of a monomode microwave applicator, under the action of microwave radiation into fatty acid alkanol amide.
Abstract:
The invention provides a fuel oil composition comprising a fuel oil of mineral origin and a fuel oil of vegetable and/or animal origin and as a cold additive, the constituents, at least one copolymer composed of ethylene and 8-21 mol % of at least one acrylic and vinyl ester having a C1-C18 alkyl radical and at least one comb polymer containing structural units composed of at least one olefin as monomer 1 which bears at least one C8-C18 alkyl radical on the olefinic double bond, and at least one ethylenically unsaturated dicarboxylic acid as monomer 2 which bears at least one C8-C16 alkyl radical bonded via an amide and/or imide moiety.