Abstract:
Procedimiento para la extracción de petróleo de yacimientos petrolíferos subterráneos, en el que una formulación acuosa de tensioactivo que contiene sal, que comprende una mezcla de tensioactivos para reducir la tensión interfacial entre el petróleo y el agua a 0, en el caso de que R1 sea un resto hidrocarburo alifático primario lineal, saturado o insaturado, con 10 a 36 átomos de carbono; y c) la concentración de todos los tensioactivos en conjunto es del 0,05 al 0,49 % en peso en relación con la cantidad total de la formulación acuosa de tensioactivo que contiene sal.
Abstract:
Disclosed is a composition comprising a source of metal ions and at least one additive comprising one polyaminoamide represented by formula I. Further disclosed is the use of said composition in a bath for depositing metal containing layers which have reduced overplating, particularly reduced mounding.
Abstract:
The present invention relates to a method of producing mineral oil from underground mineral oil deposits, in which an aqueous formulation comprising at least a mixture of alkyl ether carboxylate and corresponding alkyl ether alcohol, where the alkyl ether carboxylate has been prepared from the alkyl ether alcohol and the molar ratio in the mixture of alkyl ether carboxylate:alkyl ether alcohol is from 51:49 to 92:8, is injected through at least one injection well into a mineral oil deposit, where the deposit has a deposit temperature of 55°C to 150°C, a crude oil having more than 20° API and a deposit water having more than 100 ppm of divalent cations, and crude oil is withdrawn through at least one production well from the deposit. The invention further relates to the preparation of the mixture and to a concentrate comprising the mixture.
Abstract:
A composition comprising a source of metal ions and at least one additive comprising at least one polyaminoamide, said polyaminoamide comprising the structural unit represented by formula I or derivatives of the polyaminoamide of formula I obtainable by complete or partial protonation, N-functionalization or N-quaternization with a non-aromatic reactant, wherein D6 is, for each repeating unit 1 to s independently, a divalent group selected from a saturated or unsaturated C1-C20 organic radical, D7 is, for each repeating unit 1 to s independently, a divalent group selected from straight chain or branched C2-C20 alkanediyl, which may optionally be interrupted by heteroatoms or divalent groups selected from O, S and NR10, R1 is, for each repeating unit 1 to s independently, selected from H, C1-C20 alkyl, and C1-C20 alkenyl, which may optionally be substituted by hydroxyl, alkoxy or alkoxycarbonyl, or, together with R2, may form a divalent group D8, and R2 is, for each repeating unit 1 to s independently, selected from H, C1-C20 alkyl, and C1-C20 alkenyl, which may optionally be substituted by hydroxyl, alkoxy or alkoxycarbonyl, or, together with R1, may form a divalent group D8, and D8 is selected from straight chain or branched C1-C18 alkanediyl, which may optionally be interrupted by heteroatoms or divalent groups selected from O, S and NR10, s is an integer from 1 to 250, R10 is selected from H, C1-C20 alkyl, and C1-C20 alkenyl, which may optionally be substituted by hydroxyl, alkoxy or alkoxycarbonyl.