摘要:
The invention relates to a continuous method for producing aliphatic carbonic acid esters by reacting at least one aliphatic carboxylic acid of formula (I) R1—COOH (I), wherein R1 represents hydrogen or an optionally substituted aliphatic hydrocarbon group with 1 to 50 carbon atoms, with at least one alcohol of formula (II) R2—(OH)n (II), wherein R2 represents an optionally substituted hydrocarbon group with 1 to 100 C atoms and n is an integer from 1 to 10, in the presence of at least one transesterification catalyst in a reaction tube the longitudinal axis of which extends in the direction of propagation of the microwaves of a monomode microwave applicator, under microwave irradiation to form the ester.
摘要:
The invention relates to a continuous method for producing aromatic carboxylic acid esters by reacting at least one aromatic carboxylic acid of formula (I) Ar—COOH (I), wherein Ar represents an optionally substituted aryl group with 5 to 50 atoms, with at least one alcohol of formula (II) R2—(OH)n (II), wherein R2 represents an optionally substituted hydrocarbon group with 1 to 100 C atoms and n is an integer from 1 to 10, in the presence of at least one transesterification catalyst in a reaction tube, the longitudinal axis of which extends in the direction of propagation of the microwaves of a monomode microwave applicator, under microwave irradiation to form the ester.
摘要:
The invention relates to a method for producing tertiary amides of alkylphenyl carboxylic acids by reacting at least one secondary amine with at least one alkylphenyl carboxylic acid to form an ammonium salt, said ammonium salt being subsequently converted into the tertiary amide by means of microwave radiation.
摘要:
The invention relates to a method for producing carboxylic acid amides, according to which at least one carboxylic acid of formula (I) R3—COON (I) wherein R3 is hydrogen or an optionally substituted hydrocarbon radical comprising between 1 and 50 carbon atoms, is reacted with at least one amine of formula (II) HNR1R2 (II) wherein R1 and R2 are independently hydrogen or an optionally substituted hydrocarbon radical comprising between 1 and 100 C atoms, to form an ammonium salt, and said ammonium salt is reacted in the presence of superheated water, under microwave irradiation, to form a carboxylic acid amide.
摘要:
The invention relates to a continuous method for producing amides of aromatic carboxylic acids, according to which at least one aromatic carboxylic acid of formula (I) Ar—COON (I) wherein Ar is an optionally substituted aryl radical comprising between 5 and 50 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 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.
摘要:
The invention relates to a method for producing fatty acid alkanol amides by reacting at least one amine that contains at least one primary or secondary amino group and at least one hydroxyl group with at least one fatty acid to form an ammonium salt, said ammonium salt being subsequently converted into the alkanol amide by means of microwave radiation.
摘要:
An additive for middle distillates with a maximum sulfur content of 0.05 percent by weight, comprising at least one fatty acid ester of alkoxylated polyols with at least 3 OH groups (A) and at least one alkylphenol-aldehyde resin (C).
摘要:
The invention relates to an additive for improving the lubrication capacity of fuel oils with a maximum sulphur content of 0.035 wt. %. Said additive contains at least one ester of a bivalent or polyvalent alcohol and a mixture of unsaturated and optionally saturated fatty acids, whose carbon chain lengths are between 8 and 30 carbon atoms, the aforementioned esters having an OH value less than 200 mg KOH/g ester and an iodine value greater than 100 g I/100 g ester. The invention also relates to fuel oils with a maximum sulphur content of 0.035 wt. %, which contain the inventive additives. The novel additives exhibit less tendency to emulsify than the additives in prior art.
摘要翻译:本发明涉及一种用于改善最大硫含量为0.035重量%的燃料油的润滑能力的添加剂。 %。 所述添加剂含有至少一种二价或多价醇的酯和碳链长度为8至30个碳原子的不饱和脂肪酸和任选的饱和脂肪酸的混合物,上述酯的OH值小于200mg KOH / g 酯,碘值大于100g I / 100g酯。 本发明还涉及最大硫含量为0.035重量%的燃料油。 %,其含有本发明的添加剂。 与现有技术中的添加剂相比,新型添加剂显示出较少的乳化倾向。
摘要:
An additive for improving the lubricity of fuel oils having a maximum sulfur content of 0.035% by weight, comprising A) at least one partial ester composed of a di- or polyhydric alcohol and unsaturated and optionally also saturated fatty acids whose carbon chain lengths are between 8 and 30 carbon atoms, at least 60% of the fatty acid radicals containing at least one double bond, and B) at least one alkylphenol-aldehyde resin, obtainable by the condensation of (i) at least one alkylphenol having at least one C6-C24-alkyl or C6-C24-alkenyl radical and (ii) at least one aldehyde or ketone, to a degree of condensation of between 2 and 50 alkylphenol units.
摘要:
The invention provides a fuel oil composition F) comprising F1) a fuel oil of mineral origin and F2) a fuel oil of vegetable and/or animal origin, and, as a cold additive, the constituents A) at least one copolymer composed of ethylene and 8-21 mol % of at least one acrylic or vinyl ester having a C1-C18-alkyl radical and B) at least one comb polymer containing structural units having C8-C16-alkyl radicals, the structural units being selected from C8-C16-alkyl (meth)acrylates, C8-C16-alkyl vinyl esters, C8-C16-alkyl vinyl ethers, C8-C16-alkyl(meth)acrylamides, C8-C16-alkyl allyl ethers and C8-C16-diketenes, where the sum R R = m 1 · ∑ i w 1 i · n 1 i + m 2 · ∑ j w 2 j · n 2 j + … + m g · ∑ p w gp · n gp of the molar averages of the carbon chain length distributions in the alkyl radicals of the monomers B) is from 11.0 to 14.0, where m1, m2, . . . mg are the molar fractions of the abovementioned monomers B) in the polymer, and the sum of the molar fractions m1 to mg=1, w1i, w1j. . . w2i, w2j. . . wgp are the proportions by weight of the individual chain lengths i, j, p of the alkyl radicals of the different monomers B) 1 to g, and n1i, n1j. . . n2i, n2j. . . ngp are the chain lengths of the alkyl radicals i, j, . . . p of the monomers B) 1 to g.