摘要:
Oxyalkylated polyamidoamines are obtained by reacting a polyamine with caprolactam and oxyalkylating the product with alkylene oxides, and are used for rapidly dewatering crude oil.
摘要:
Novel 2-hydroxypropylimidazole derivatives of the formula I ##STR1## where m is 1 or 2 and n is 0 or 1, R.sup.1 is an aliphatic or cycloaliphatic radical of 6 to 21 carbon atoms, R, if n is O, is an aliphatic, cycloaliphatic, aromatic or araliphatic radical of 6 to 21 carbon atoms and is preferably identical with R.sup.1, or R, if n is 1, is a divalent aliphatic or aromatic radical of 2 to 15 carbon atoms or is ##STR2## p being 0 or 2, and R', R" and R"' are hydrogen or alkyl of 1 to 4 carbon atoms, and R" or R"' may also be nitro.
摘要:
A method of demulsifying a crude oil and water composition involves adding demulsifiers made from acrylic acid/methacrylic acid copolymerized with hydrophilic monomers.
摘要:
Alkoxylated amido-containing polyamines which are suitable as oil demulsifiers are obtainable by condensing a dicarboxylic acid of 3 to 20 carbon atoms or one of its functional derivatives with a polyalkylenepolyamine having 2 or more carbon atoms and 2 or more amino groups and reacting the product with a total of from 1 to 200 moles/mole of ethylene oxide and/or propylene oxide and/or 1,2-butylene oxide.
摘要:
Polyethers with are suitable as oil demulsifiers are obtainable by reacting(A) a polyalkylene oxide obtained from ethylene oxide and propylene oxide and containing in total from 5 to 200 alkylene oxide units with(B) an alkylolation product of a low molecular weight aldehyde and a bis-(4-hydroxyphenyl)-methane of the general formula II ##STR1## wherein R.sup.1 and R.sup.2 may be identical or different and are each hydrogen, low molecular weight alkyl, phenyl, carboxyl or low molecular weight alkoxycarbonyl, the molar reaction ratio of the compound of the formula II to the alkylolating aldehyde being from 1:1 to 1:4, at from 100.degree. to 180.degree. C. in the presence of an acidic catalyst with removal of the water of reaction, the weight ratio of A to B being from 5:1 to 1:3.
摘要:
Crosslinked oxyalkylated polyalkylenepolyamines which can be obtained by reacting polyalkylenepolyamines, which are completely oxyalkylated at the nitrogen atoms, in each case by from 10 to 300 groups, and possess from 50 to 2,000 repeating alkyleneimine units in the molecule, with from 0.5 to 10% by weight, based on the oxyalkylated polyalkylenepolyamines, of a crosslinking compound which possesses two or more functional groups which are capable of reacting with the terminal alcohol groups of the oxyalkylated polyalkylenepolyamines, and a process for breaking water-in-oil emulsions.
摘要:
A system for determining vibration characteristics of a motor vehicle having a sensing arrangement (8) adapted to sense vibrations of the vehicle or a vehicle part, and an electronic processing means (11) adapted to apply an algorithm (12) for evaluating signals from the sensing arrangement (8) and for determining vibration characteristics based on the evaluation. The algorithm (12) includes at least one support vector machine SVM (13a . . . 13g) adapted to output a probability that the current vibration characteristic belongs to a particular pre-set type of vibration characteristic.
摘要:
The invention relates to the use of thermally sensitive polymers as dye transfer inhibitors. The invention also relates to novel thermally sensitive polymers suitable as dye transfer inhibitors, and to washing compositions which comprise these polymers.
摘要:
In a safety system and a method of operating a sensor in a safety system, the sensor transmits an electric reaction signal to a central system unit, and is also excited by the central system unit by a diagnostic and/or excitation signal as a reversible electro-mechanical system.
摘要:
A seat occupancy sensor has at least two pressure-activatable switch elements, which are assigned to two areas of a seat and are spaced a distance apart from one another and connected in a logic AND operation arrangement. An electric resistance element is connected in parallel to each switch element, its resistance value being between the resistance values when the switch element is activated and when the switch element is not activated. Each switch element can have a plurality of parallel connected sensor cells interconnected in a logic OR operation arrangement and distributed over a zone of the seat so that occupancy at any location within this zone is recognized as seat occupancy by one of the sensor's switch elements.