Abstract:
The invention relates to antifreezing agent/corrosion protection concentrates containing, with regard to the total amount of the concentrate, 10 to 50 % by weight of glycerin, to methods for producing concentrates of this type from super concentrates, aqueous antifreezing agent compositions from these concentrates, and to the their use, for example, in internal combustion engines.
Abstract:
Branched decyl nitrates of the formula R1 R2 CH-CH 2-O-NO 2, wherein R1 denotes an n-propyl or iso-propyl group and R2 is a linear or branched alkyl group having 5 carbon atoms, are suited as combustion improvers and/or cetane number improvers in fuels.
Abstract:
Branched decyl nitrates of the formula R1 R2 CH-CH 2-O-NO 2, wherein R1 denotes an n-propyl or iso-propyl group and R2 is a linear or branched alkyl group having 5 carbon atoms, are suited as combustion improvers and/or cetane number improvers in fuels.
Abstract:
The invention relates to an additive formulation for the anti-static finishing and improvement of the electrical conductivity of inanimate organic material made of (A) 1 to 50% by weight of an olefin-sulfur dioxide copolymer, (B) 1 to 50% by weight of a compound having alkaline nitrogen atoms with longer-chained hydrocarbon groups with at least 4 carbon atoms or an equivalent structural element, which ensures the solubility of (B) in the inanimate organic material, (C) 0.1 to 30% by weight of an acid soluble in oil, and (D) 1 to 80% by weight of an organic solvent with a high boiling point, wherein at least 80% by weight of the molecule types have a boiling point that is higher than 150ºC at normal pressure.
Abstract:
The invention relates to the use of certain ethers as activity-enhancers for water-soluble biocides in homopolar hydrocarbons. The invention also relates to the use of at least one water-soluble biocide combined with at least one of said ethers for controlling micro-organisms and/or for reducing or preventing the multiplication of micro-organisms in essentially water-immiscible hydrocarbons. The invention also relates to additive compositions and hydrocarbon compositions comprising such ethers and biocides, and to a method for controlling micro-organisms and/or for reducing or preventing the multiplication of micro-organisms in hydrocarbons, according to which such a biocide and at least such an ether are added to the hydrocarbon.
Abstract:
The invention relates to a thermal liquid concentrate containing a glycol and: a) 0.05 to 10 percent by weight, preferably 0.1 to 5 percent by weight, of one or several aliphatic amines of general formula (I), wherein R1 to R3 can be identical or different and represent hydrogen, optionally branched C1-C9 alkyl, or C1-C9 hydroxyalkyl; b) 0.005 to 3 percent by weight, preferably 0.01 to 1 percent by weight, of one or several optionally stabilized silicates; c) 0 to 3 percent by weight of one or several corrosion inhibitors selected among the group comprising hydrocarbon triazoles and hydrocarbon thiazoles; d) 0 to 5 percent by weight of one or several alkali metal molybdates, ammonium molybdates, or substituted ammonium molybdates; and e) 0 to 1 percent by weight of one or several polymeric hard water stabilizers. The inventive concentrates are particularly suitable for use in solar systems after being optionally diluted with water, thermal liquid being in direct contact with the glass of the solar system.
Abstract:
The invention relates to an additive formulation for the anti-static finishing and improvement of the electrical conductivity of inanimate organic material made of (A) 1 to 50% by weight of an olefin-sulfur dioxide copolymer, (B) 1 to 50% by weight of a compound having alkaline nitrogen atoms with longer-chained hydrocarbon groups with at least 4 carbon atoms or an equivalent structural element, which ensures the solubility of (B) in the inanimate organic material, (C) 0.1 to 30% by weight of an acid soluble in oil, and (D) 1 to 80% by weight of an organic solvent with a high boiling point, wherein at least 80% by weight of the molecule types have a boiling point that is higher than 150ºC at normal pressure.
Abstract:
Use of oligo- or polyamines having a number-average molecular weight of 46 to 70 000 which are free from phenolic hydroxyl groups for increasing the oxidation stability of biofuel oils which are based on esters of fatty acids, or of mixtures of such biofuel oils with medium distillates of fossil origin and/or of plant and/or animal origin, which are essentially hydrocarbon mixtures and are free of esters of fatty acids.
Abstract:
The invention relates to oil-in-water emulsions based on fatty alcohols and mono- or diesters of glycerol and the use thereof as antifoams or deaerators for aqueous compositions. The oil phase of the emulsions according to the invention consists to at least 95% by weight of the following constituents: a) 40 to 95% by weight, based on the total weight of the oil phase, of a mixture of at least two alcohols as component A, consisting of: a1) at least one alkanol having 12 to 30 carbon atoms as component A1, a2) at least one mono- or diester of glycerol with at least one fatty acid having 14 to 24 carbon atoms as component A2; b) 0.1 to 10% by weight, based on the total weight of the oil phase, of at least one further component B, which is selected from esters of C 12 -C 36 -alkanecarboxylic acids with polyglycerol, amides of C 12 -C 36 -alkanecarboxylic acids with alkylenediamines or oligoalkyleneamines, and esters of C 12 -C 36 -alkanecarboxylic acids with C 12 -C 36 -alkanols, and mixtures thereof, c) 4.9 to 50% by weight, based on the total weight of the oil phase, of at least one further component C, which is selected from organic substances which are liquid at 50°C and 1013 mbar, at atmospheric pressure have a boiling point above 200°C, and at 25°C and 1013 mbar have a solubility in water of less than 0.1 g/l.
Abstract:
The invention relates to a liquid cooling device in an internal combustion engine (11) and to a process for manufacturing same. The device according to the invention comprises a cooling circuit (13) having at least one cooling duct (23, 24, 41) for a liquid coolant, the duct being in thermal contact with at least one component (12a, 12b, 31) of the internal combustion engine (11). A wall of the cooling duct (23, 24, 41) that comes into contact with the coolant comprises in at least one partial zone a microstructured surface with a certain porosity and roughness. According to the invention, this device is produced by forming a cooling circuit for a liquid coolant, the circuit comprising cooling ducts that can be brought at least in part into thermal contact with the internal combustion engine, and by generating a microstructured surface on at least part of the walls of the cooling ducts that come into contact with the liquid coolant.