Abstract:
Verwendung der Verbindungen der Formel R1 C12-C26-Alkyl oder C12-C26-Alkenyl, n eine Zahl von 0 bis 5, C1-C3-Alkyl, R3 C1-C3-Alkyl oder eine Gruppe der Formel -(C2H4O)xH, x eine Zahl von 1 bis 3, A ein Anion, R9 eine Gruppe der Formel R1'-(OCH2CH2)n-, C8-C18-Alkylaryl oder Aryl-C8-C18-alkyl, R1' C14-C22-Alkyl oder C14-C22-Alkenyl, n eine Zahl von 0 bis 5 und die Reste R10 gleich sind und C1-C4-Alkyl oder C1-C4-Hydroxialkyl bedeuten, als Korrosionsschutzmittel für metallische Werkstoffe in wässrigen Medien.
Abstract:
Hydraulic solids transport in an aqueous medium by means of flow accelerators, such as polyacrylamides, is improved by further also adding a water-soluble salt, acting as an absorption retarder, of an inorganic polyacid such as, for example, the alkali metal salts or ammonium salts of polysilicic acids or polyphosphoric acids.
Abstract:
Film consists of monolayer(s) of or contg. an amphiphilic cpd., which is a 4-alkoxy-, 4-acyloxy-, 4-aminoalkyl-, 4-alkylaminoalkyl-, 4-acylamino- or 4-N-alkyl-N-acyl-amino -benzaldehyde 4'-nitrophenylhydrazone of formula (I) (where R1 = a CH3-(CH2)m-O-, CH3-(CH2)n-CO-O-, CH(CH2)nN(CH2)lH or CH3(CH2)n(CO)N(CH2)lH gp.; m = 10-25; n = 8-22; l = 0-25; in which the mols. are oriented in the same direction, parallel to one another and not centro-symmetrically).
Abstract:
The frictional drag of aqueous liquids and suspensions in turbulent or pulsating flow is reduced by adding 1 to 1,000 ppm of a polyacryl amide or partially saponified polyacryl amide obtained in its manufacturing process in the form of an aqueous, dimensionally stable jelly which has retained its solubility in water and is capable of being cut.
Abstract:
Use of the compounds of the formula in which R1 denotes C12-C26-alkyl or C12-C26alkenyl, n denotes a number from 0 to 5, K(+) denotes a group of the formulae or a group of the formula -(C2H4O)xH, x denotes a number from 1 to 3, A(-denotes an anion, R9 denotes a group of the formula R1'-(OCH2CH2)n-, C8-C18-alkylaryl or aryl-C8-C18-alkyl, R1' denotes C14-C22-alkyl or C14-C22-alkenyl, n denotes a number from 0 to 5 and the radicals R10 are identical and denote C1-C4-alkyl or C1-C4-hydroxyalkyl, as corrosion protection agents for metallic materials in aqueous media.
Abstract:
Method of controlling the mobility of aqueous flows through fissures, slits or pores, in particular of flooding waters in tertiary production of crude oil, wherein cationic surfactants which, on measurement of the electric birefringence with a pulsed rectangular electrical field in pure aqueous solutions, give a measurement signal, from the decrease of which a relaxation time of 0.01 mu s to 10 ms, in particular of 0.1 mu s to 2 ms, results, are added to the aqueous medium. Preferred suitable cationic compounds are those of the general formula R1-K+A- in which R1 denotes C12-C26-alkyl or C12-C26-alkenyl, K+ denotes a group of the formula R2 denotes C1-C3-alkyl, preferably methyl, R'2 denotes C1-C3-alkyl, preferably methyl, R''2 denotes C1-C3-alkyl, preferably methyl, or R''2 denotes (CH2CH2O)xH, where x denotes from 1 to 3, preferably 1 to 2, and A- denotes an anion of the following formulae: SCN31, R3SO3-, where R3 is C6-C9-alkyl or -alkenyl and the sum of the carbon atoms in R1 and R3 should be at least 21; +TR where Hal is chlorine or bromine, R4 is C1-C5-alkyl, C2-C5-alkenyl or C1-C5-alkoxy in positions 3, 4, 5 and 6 and R5 is hydrogen or hydroxyl in positions 2 and 3 relative to the carboxyl group, or where R6 is COO- or SO3- and R7 is hydrogen or methyl.