摘要:
The invention relates to a method for carrying out a balanced reaction, comprising the following steps: a) a low-boiling educt (E2) which is gaseous in the reaction conditions is guided through a separate, liquid, higher-boiling educt (E1) in a bubble reactor and b) unreacted educt (E2) is conveyed to a membrane module together with the product to be separated (P1), which is also in gaseous form, as feed. Said membrane module is located outside of the reactor and is suitable for vapour permeation. In said membrane module, P1 is separated off as permeate whilst E2 is recovered as retentate and returned to the reactor in a circuit until the desired quantity of educt (E1) has been converted into the target product. The method is characterised in that carbonyl compounds of formula (I) R1-(CO)¿n1?-(B)m-(CO)n2-R?2¿ are used as (E1), B representing an optionally hydroxy- and/or carboxy-substituted alk(en)yl radical with 1 to 12 carbon atoms which is also optionally interrupted by an ether oxygen, a phenyl radical or a carbonyl group, R?1 and R2¿ representing hydrogen or a hydroxyl or alkyl radical with 1 to 12 carbon atoms independently of each other or forming a saturated or unsaturated aliphatic C¿5? or C6 ring together with at least one carbonyl group, said ring being optionally substituted with C1-C4 alkyl and/or hydroxy and the sum of n1 and n2 being either 1 or 2 and m being 0 or 1, and in that aliphatic alcohols with 2 to 8 carbon atoms are used as (E2).
摘要:
The cold flow properties of fuels, in particular, diesel fuels can be improved by the addition of reaction products of amines of general formula (I) NR1R2R3 in which R1, R2, R3, independently = H, 1 to 22 C alkyl, or a 1 to 22 C hydroxylalkyl group or a 1 to 22 C aminoalkyl with fatty acids of general formula (II) R4-COOH in which R4 = branched or unbranched 7 to 25 C alkyl or alkylene group in the molar ratio (I) : (II) of 1 : 1 to 1 : 3 at a temperature of 80 to 140 °C.
摘要:
The invention relates to a method for producing acyl amino acids, according to which a mixture of at least one amino acid or the salt thereof and an alkali source is introduced into a reactor and said mixture is added to a polyisotopic element containing fatty acid halides of formula (I): R1COX, wherein R1 represents an alkyl or alkenyl group with between 6 and 22 carbon atoms and X represents chlorine, bromine or iodine. The invention also relates to the resultant products and to the use thereof in cosmetic products and in detergents, dishwashing detergents and cleaning agents.
摘要:
The invention relates to a method for producing branched alcohols and/or hydrocarbons, whereby carbonyl compounds are condensed in the presence of acids or bases and the resulting α,β-unsaturated condensation products are then hydrogenated.