摘要:
The present invention relates to acylated polymeric polyamines, to processes for their preparation, to their use, and to aqueous compositions which comprise these polyamines.
摘要:
Alkanols are oxyalkylated by a process in which the reaction is carried out using a heterogeneous basic catalyst which is selected from basic aluminates, and the compounds prepared thereby are used as carrier oils in fuel additives or as nonionic surfactants in detergents or cleaning agents.
摘要:
The use of esters or amides of hydroxylated carboxylic acids as solubilizers, particularly for pharmaceutical, cosmetic and food preparations, is described.
摘要:
The disclosure sets forth aqueous cationic surfactant formulations and a process for their preparation. The formulations contains in solution a) from 10 to 50% by weight of a quaternary ammonium compound of the formula I: where: the substituents have the meanings set forth in the description, and b) from 0.01 to 15% by weight of an amine of the formula III: and c) from 0.1 to 5.0% by weight of a buffer which maintains a pH in a range from 4 to 9. The surfactant formulation is prepared by reacting an amine of the formula III in aqueous solution with a dialkyl sulfate of the formula IV where R1 to R5 are in a molar ratio range from 85 to 99.99 mol %, based on the amine and at from 20 to 100 degrees C. and then adding to the reaction solution from 0.1 to 5.0% by weight of a buffer which maintains a pH in a range from 4 to 9.
摘要:
Solvent extraction of one or more metal ions from an aqueous solution in the presence of hydrocarbon-soluble aminomethylenephosphonic acid derivatives.
摘要:
Mixtures of at least one polycarboxylate-based plasticizer for cement-comprising mineral building materials, and butoxylated polyalkylenepolyamines or their salts as air detrainers, and the use of such mixtures as additives for mineral building materials comprising cement, are described.
摘要:
Polyalkeneamines of the formula (I) where R1, R2, R3, R4, R5 and R6 may have different meanings, are prepared by a process in which a polyalkene epoxide is reacted with an amine and the amino alcohol is dehydrated and reduced to give the compound of the formula (I).
摘要:
A description is given of antifreeze concentrates which comprise a) at least one water-miscible alcohol which lowers the freezing point; b) at least one corrosion inhibitor; and c) as reserve alkalinity donor, at least one mono- or polycyclic aromatic compound which has at least one hydroxyl group and a high buffer capacity in the pH range from about 6 to 10 and of coolant compositions which comprise said concentrates and are intended for the cooling circuits in internal combustion engines.
摘要:
Hydraulic fluids, in particular brake fluids for motor vehicles, comprising from 0.01 to 50 wt % of one or more cyclic carboxylates, or cyclic carboxamides, which can carry a linear or branched C1-bis C20 alkyl group on the nitrogen atom.
摘要:
Polyalkene alcohol polyalkoxylates R—(CH2)n—(O—A)m—OH, where R is a polyalkene radical derived from C2- to C30-alkenes and having a number average molecular weight from 300 to 5000, A is an alkylene group of 2 to 8 carbon atoms, m is a number up to 200, with the proviso that the oxygen in the oxyalkylate radical accounts for at least 16.5% by weight of the number average molecular weight of the total molecule I, and n is 0 or 1, are suitable as carrier oils in fuel and lubricant compositions.