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:
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:
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:
The present invention relates to the use of trialkanolamine polyethers obtained by condensation of one or more trialkanolamines in the presence of phosphorous acid and/or hypophosphorous acid as demulsifiers for oil-in-water emulsions.
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 sample of a fuel/oil/additive mixture is metered continuously to a channel-like, inclined test element along which there is an increasing temperature profile. Under the increasing action of heat on the flowing mixture, solid residual products form on the test element after a certain flow distance. Their weight and the flow distance are evaluated in order to evaluate the additive.
摘要:
Petroleum demulsifiers which contain, as the active ingredients, oxyalkylated isoalkylphenol-formaldehyde resins and oxyalkylated polyalkylenepolyamines.
摘要:
The present invention relates to methods of demulsifying employing condensates as demulsifiers for oil-in-water emulsions and prepared fromA) a precondensate from one or more trialkanolamines of the general formula I ##STR1## in which R.sup.1 to R.sup.3 denote the same or different 1,2-alkylene groups of from 2 to 4 carbon atoms, andB) from 0.1 to 30% w/w, based on said precondensate, of one or more of the following compounds II:a) urea or a urea derivative of the general formula IIa ##STR2## b) a urea derivative of the general formula IIb ##STR3## c) a urethane of the general formula IIc ##STR4## and/or d) a urethane of the general formula IId ##STR5## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.20 -alkyl or C.sub.2 -C.sub.20 -alkenyl,R.sup.2 and R.sup.3 are the same or different and denote hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.4 is C.sub.1 -C.sub.4 -alkyl andR.sup.5 is C.sub.1 -C.sub.12 -alkylene.
摘要:
A process for the preparation of ether sulfonates or polyglycol ether sulfonates by reacting an organic alcoholic or phenolic compound or the corresponding alkoxylate in aqueous solution with vinyl sulfonate in the presence of from 0.1 to 3.0% by weight of an alkaline catalyst and, if required, additionally in the presence of a phase-transfer catalyst, and ether sulfonates or polyglycol ether sulfonates prepared by this process and of the general formulaR--O(C.sub.n H.sub.2n O).sub.z --CH.sub.2 CH.sub.2 SO.sub.3 Xwhere R is H or an aliphatic or aromatic hydrocarbon radical (which may contain nitrogen as a heteroatom) of 1 to 30 carbon atoms, n is from 2 to 30, z is from 0 to 300 and X is an alkali metal.
摘要:
A print paste for printing textiles of polyester, cellulose acetate, cellulose triacetate and mixtures of the same with other fibers which is based on a disperse dye, thickener, ethanolamide of a carboxylic acid and water and which is characterized by a content of at least one phenol which has been oxyethylated twice to six times. The paste yields prints having excellent color strength and levelness.