EP1025908A1 - Biologisch abbaubare Esterquats als Flotationshilfsmittel - Google Patents
Biologisch abbaubare Esterquats als Flotationshilfsmittel Download PDFInfo
- Publication number
- EP1025908A1 EP1025908A1 EP00107539A EP00107539A EP1025908A1 EP 1025908 A1 EP1025908 A1 EP 1025908A1 EP 00107539 A EP00107539 A EP 00107539A EP 00107539 A EP00107539 A EP 00107539A EP 1025908 A1 EP1025908 A1 EP 1025908A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flotation
- alkyl
- collectors
- mgcl
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/0043—Organic compounds modified so as to contain a polyether group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
- B03D1/011—Quaternary ammonium compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
Definitions
- the invention relates to so-called ester quats as an aid in the flotation of non-sulfidic Ores.
- the quaternized esterification products of the mono-, di- or Trialkanolamines with aliphatic carboxylic acids show good collector properties on the one hand, especially in silicate flotation, on the other hand excellent biodegradability both under aerobic and under anaerobic conditions.
- Non-sulfidic minerals include, for example, apatite, calcite, fluorite, scheelite and other salt-like minerals, cassiterite, hematite, magnesite and other metal oxides, e.g. Oxides of titanium and zirconium as well as certain silicates and aluminosilicates.
- DE-A1 35 17 154 describes the use of surfactant mixtures as Aid for the flotation of non-sulfidic ores.
- surfactant mixtures as Aid for the flotation of non-sulfidic ores.
- anionic, cationic or ampholytic surfactant used.
- the use of quaternized ester compounds is not mentioned or suggested.
- WO 94/26419 describes the flotation of silicate-containing calcite minerals. As a solution is the flotation in the presence of a quaternary ammonium compound and an alkylene oxide adduct to perform on an amino compound, the silicate accumulating in the foam. The use of quaternized ester compounds in such a flotation process is neither mentioned nor suggested.
- DE-A1 41 06 866 discloses a process for the selective flotation of phosphorus minerals, being a collector of a mixture of salts of the half esters of alkyl substituted succinic acids and other anionic tenisides can be described.
- DE-A1 also discloses a process for the selective flotation of phosphorus minerals 41 05 384. It is proposed here that the flotation slurry with carboxylic acids of chain length 6 to add up to 24 acylated protein or peptide hydrolyzates.
- Calcite minerals are of great importance for the paper industry, for example. Calcite is an important filling material for the paper industry, with which the Have the whiteness and the transparency of the product regulated. Calcite minerals come often associated with silicates before, so that a separation for cleaning the calcite of the undesirable silicate required in many applications. This is usually the Flotation used.
- calcite minerals can be quaternary Ammonium compounds mixed with fatty alcohols or non-polar hydrocarbons rid of annoying silicates.
- the task was therefore to provide a biodegradable flotation aid To make available, on the one hand, a high selectivity, especially in the flotation of Silicates, on the other hand, it guarantees excellent biodegradability. In addition should this flotation aid be able to be successful even with such minerals to be used, which have a high proportion of magnesium.
- the invention thus relates to a process for removing mineral impurities, in particular silicates, from ore mixtures by flotation, by mixing ground ore mixture with water to form a suspension, introducing air into the suspension in the presence of a flotation aid and the resulting foam together with those contained therein flotated impurities are separated, with the proviso that quaternized ester compounds (esterquats) of the general formula (I) where R 1 CO for an acyl radical with 6 to 24 carbon atoms, R 2 for R 1 CO, R 3 , R 4 and R 5 independently of one another for alkyl radicals with 1 to 4 carbon atoms, m and n in total for 0 or numbers from 1 to 12 and X stands for halide, alkyl sulfate or alkyl phosphate, individually or in a mixture, optionally together with other anionic, cationic, amphoteric and / or nonionic substances as collector component.
- ester compounds esterquats
- collectors Either the esterquats according to the invention are referred to as collectors in the sense of the invention or such substances that are known to those skilled in the art on account of their effect as collectors are.
- Esterquats are generally understood to be quaternized fatty acid triethanol amine ester salts. These are known substances which can be obtained by the relevant methods of preparative organic chemistry. In this connection, reference is made to the international patent application WO 91/01295 (Henkel) , after which triethanolamine is partially esterified with fatty acids in the presence of hypophosphorous acid, air is passed through and then quaternized with dimethyl sulfate or ethylene oxide.
- the fatty acids and the triethanolamine can be used in a molar ratio of 1.1: 1 to 3: 1 to produce the quaternized esters.
- an application ratio of 1.2: 1 to 2.2: 1, preferably 1.5: 1 to 1.9: 1 has proven to be particularly advantageous.
- the preferred ester quats are technical mixtures of mono-, di- and triesters with an average degree of esterification of 1.5 to 1.9, for example 1.64 and 1.9, and are derived from technical C 16/18 - tallow or Palm fatty acid (iodine number 0 to 40).
- Floatable minerals can be divided into the two groups of polar and non-polar minerals divide, the surface of the non-polar minerals being difficult to hydrate, and such minerals must ultimately be called hydrophobic.
- Nonpolar minerals include graphite, sulfur, molybdenite, diamond, coal and Talk, all of which can be floated in their original state.
- the these minerals containing ores usually only require the addition of non-specific collectors, such as diesel oil, kerosene or similar hydrocarbons such as oxo oils, to the to support the natural hydrophobicity of the minerals.
- Polar minerals on the other hand, have strong covalent or ionic surface bonds, rapid hydration through water molecules in the form of multilayers are accessible. These minerals include, for example, malachite, azurite, chrysocolla, Wulfenite, cerrusite, witherite, magnesite, dolomite, smithsonite, rhodochrosite, siderite, magnetite, Monazite, hematite, goethite, chromite, pyrolusite, borax, wolframite, columbite, tantalite, rutile, Zircon, hemimorphite, beryl and garnet.
- the sulfidic minerals are an exception group.
- exception Collectors are used, which are able to with those on the mineral surface React sulfide groups, such as xanthates, dithiophosphates, mercaptans, thionocarbamates or dithiolates, with the formation of nasal bubbles becoming the dominant one Flotation mechanism will.
- the usual steps in the process are usually dry or preferably wet grinding of the minerals, the suspension of the rock powder thus obtained in Water with the addition of the flotation aid and, preferably after in one case the measured exposure time of the collectors contained in the flotation aid and, if applicable Co-collector, the blowing of air into the suspension to create the flotation foam.
- the grain size distribution of the rock powder allows the flotation behavior of the individual mineral components to be controlled within a certain range.
- the particle size also influences the use of the collector, so that both grain size and, for example, collector concentration can be determined on site in a short series of tests.
- the ore should be ground so fine that the individual fine grains consist only of one type of mineral, either the valuable mineral or the impurities.
- the ideal grain size usually has to be determined depending on the respective mineral.
- a grain size distribution of approximately 5 to 500 ⁇ m has generally been found to be practicable, although narrower distributions can be advantageous in individual cases.
- ores rich in silicate can be separated by float with the results according to the invention with excellent results if less than 40, preferably less than 30 and particularly preferably less than 15% by weight of the total ore fraction have grain sizes of less than 250 ⁇ m.
- the lower limit of the grain sizes is determined both by the possibility of mechanical comminution and by the manageability of the removed components.
- more than 20% by weight of the rock powder should have a size smaller than about 50 ⁇ m, a proportion of particles of this diameter of more than 30 or 40% by weight being preferred. In the sense of the invention, it is particularly advantageous if more than 40% by weight of the ore particles have a diameter of less than 45 ⁇ m.
- the stone powder in two or more, for example three, four or five fractions of different particle diameters to divide and subject these fractions to the flotative separation.
- the flotation aids according to the invention can be used in the present invention only one, but in principle also for several or all required separation steps be used.
- the invention also encompasses the successive administration of several different ones Flotation aids, at least one, but possibly also several of the Flotation aids must be according to the invention.
- the fractions available in this way can after the flotation process can be combined or treated separately.
- the technical parameters of the flotation plant in connection with a specific flotation aid and a particular ore can be the result of the flotation process in influence certain limits. So it can be an advantage, for example, that after a short flotation time to separate the resulting foam, since the content of flotated Contamination, or change on floating ore depending on the flotation time may, in this case a longer flotation period may lead to a worse one Result as a shorter. Likewise, it can happen in the reverse case that the separation process with increasing time to a higher purity or otherwise better Quality of the recyclable fraction leads.
- the optimization of such external parameters is the responsibility of Routine activities of the specialist who is familiar with the technical circumstances of the respective Flotation plant is familiar.
- such reagents are used for the flotation as the surface tension or modify the surface chemistry. They usually fall into the classes of Classify collectors, frothers, regulators, activators and pushers (deactivators).
- Collectors are reagents that create a coating on the mineral surface and make them water-repellent, making them accessible for the attachment of air bubbles.
- Non-sulfidic minerals are usually floated with collectors such as fatty acids, amines, quaternary ammonium compounds, sulfonates and / or hydrocarbons.
- anionic collectors are, for example, saturated and unsaturated fatty acids, in particular tall oil fatty acids, oleic acid, alkyl sulfates, in particular alkyl sulfates, alkyl aryl sulfonates, alkyl sulfosuccinates, alkyl sulfosuccinamates and alkyl lactates derived from fatty alcohols and / or fatty alcohol mixtures.
- Known cationic collectors are, for example, primary aliphatic amines, in particular the fatty amines derived from the fatty acids of vegetable and animal fats, as well as certain alkyl-substituted and hydroxyalkylene-substituted alkylenediamines and the water-soluble salts of these amines.
- esterquats are usually used either as the only collector component or as part of an active substance mixture composed of several collectors and co-collectors in an amount of 10 to 2000 g / t ore.
- the ester quats usually come in the form of 50 to 90% by weight alcoholic solutions on the market, which can usually be easily diluted with water if necessary.
- Quaternary ammonium compounds such as cetyltrimethylammonium bromide or distearyldimethylammonium chloride are not considered to be biodegradable according to the OECD guidelines, since no degradation takes place, especially under anaerobic conditions. In sewage treatment plants, they are mostly adsorbed on sludge and thus removed from further degradation. However, the esterquats meet all the requirements placed on a flotation aid with regard to biodegradability. For example, the esterquats are in Closed Bottle Test "(OECD Test No. 301 D) as readily biodegradible ",> 80% BOD / COD. Additional C 14 screening tests also confirm the complete degradation of the ester quats. In particular, the biodegradability under aerobic as well as under anaerobic conditions gives the ester quats an outstanding position among the quaternary nitrogen compounds.
- esterquats can be used alone or in a mixture with them in the sense of the invention further cationic, nonionic or, under certain conditions, even anionic Surfactants can be used as co-collectors.
- the biodegradability of the collector and co-collector existing overall system by adding difficult or non-degradable co-collectors is deteriorating overall.
- the co-collectors can also be used in larger quantities than the ester quats, for example 80, 70 or 60% by weight.
- the co-collectors should they are not readily biodegradable themselves, only in minor amounts together can be used with the esterquats.
- the cationic surfactants that can be used as co-collectors include, in particular, the amino compounds such as the acid addition salts of the primary aliphatic amines as well alkylenediamines or hydroxyalkyl substituted with ⁇ -branched alkyl radicals Alkylene diamines.
- ether amines, ether diamines and fatty acid amido amines as they are, for example, the condensates of polyamines with fatty acids.
- primary aliphatic amines are particularly suitable for those of the fatty acids of native fat and Oils derived from fatty amines with 8 to 24 carbon atoms.
- fatty amines for example tallow amines or hydrotalgamines, such as those from the Tallow fatty acids or the hydrogenated tallow fatty acids via the corresponding nitriles and their Hydrogenation are accessible.
- the amino compounds are generally used as such or as an acid addition compound in the form of a water-soluble salt.
- the salts are obtained by neutralization, which can be carried out both with equimolar amounts and with a deficit of acids. Suitable acids are, for example, sulfuric acid, phosphoric acid, hydrochloric acid, acetic acid and formic acid.
- the use of the ester quats together with fatty acid hydroxyethylimidazolines and / or fatty acid aminoethyl imidazolines and / or fatty acid aminoethanolamides and / or fatty acylamido fatty acid imidazolinium salts and / or carboxylic acid amidoalkylamines gives particularly good results in silicate flotation.
- ampholytic surfactants that can be used as co-collectors are compounds which contain at least one anion-active and one cation-active group in the molecule, the anion-active group preferably from sulfonic acid or carboxyl groups and the cation-active group from amino groups, preferably from secondary or tertiary amino groups exist.
- sarcosides come as ampholytic surfactants, Taurides, N-substituted aminopropionic acids, alkylamidobetaines, imidazoliniumbetaines, Sulfobetaines and succinamates.
- Anionic surfactants can be used in the sense of the invention if there is between the esterquats and the corresponding anionic surfactant not for flocculation is coming. This is usually the case if the esterquats contain one or more alkoxy groups, especially ethoxy groups.
- the production of such ethoxylated ester quats is described for example in DE-A1 42 24 714.
- ester quats are, for example, with alkylbenzenesulfonates, alkanesulfonates, glycerol ether sulfonates, ⁇ -methyl ester sulfonates, sulfo fatty acids, alkyl sulfates, fatty alcohol ether sulfates, Glycerol ether sulfates, hydroxy mixed ether sulfates, monoglyceride (ether) sulfates, Fatty acid amide (ether) sulfates, sulfosuccinates, sulfosuccinates, sulfotriglycerides, ether carboxylic acids, Alkyl oligoglucoside sulfates, alkyl (ether) phosphates and protein fatty acid condensates possible.
- nonionic surfactants can also be used. These include in particular the fatty alcohol polyglycol ethers, fatty amine polyglycol ethers, fatty acid amide polyglycol ethers, Fatty acid polyglycol esters, alkoxylated triglycerides, alkyl oligoglycosides, Sugar esters, sorbitan esters, polysorbates, polyol fatty acid esters, amine oxides, fatty acid alkanolamides, Alkyl lactams, fatty acid N-alkyl glucamides.
- m moles of ethylene oxide and n moles of propylene oxide on fatty alcohols with 8 to 22 carbon atoms can be used, where m and n each represent numbers from 0 to 15.
- such ores the individual components of which have so far been used separately cationic and anionic collectors in successive steps can be separated in one step by the collectors according to the invention, whereby Time and material costs can be reduced.
- a shared separation can be done, for example, when removing silicate and phosphate from iron ore.
- the esterquats can also be used in conjunction with fatty alcohols.
- Fatty alcohols are compounds of the formula (III) where R 9 is an aliphatic, linear or branched hydrocarbon radical having 6 to 24 carbon atoms and 0 and / or 1, 2 or 3 double bonds.
- the fatty alcohols can be used together with the esterquats and optionally together with other co-collectors in a mixing ratio of 0.1: 1 to 10: 1.
- Preferred is the use of fatty alcohols with 6 to 8 carbon atoms, which can optionally be used as thinners for the collectors according to the invention and at the same time as foaming agents. These include in particular isotridecanol and 2-ethylhexanol.
- So-called foamers can be used to support foam formation Collectors with too little foaming tendency for a sufficiently high foam density and ensure a sufficiently long lifespan for the foam to ensure that it is as complete as possible Allow discharge of the loaded foam.
- collector or collector / co-collector systems may not be necessary, further Use foamer. In special cases, however, it may depend on the one used Flotation process may be necessary to intervene to regulate the foaming behavior.
- the alcohols in particular aliphatic alcohols with 5 to 8 carbon atoms such as n-pentanol, isoamyl alcohol, hexanol, heptanol, Methyl isobutyl carbinol, caprylic alcohol, 4-heptanol have good foaming properties.
- Natural oils can also be used to support foam.
- the alcohols, ethers and ketones such as e.g. ⁇ -terpineol, borneol, fennel alcohol, piperiton, Camphor, fenchone or 1,8-cineol have both collector and foaming properties.
- the frothers are those that are non-ionic as part of the list Collectors mentioned polypropylene glycol ether.
- the flotation aids according to the invention can contain further substances such as pushers, activators, pH regulators and dispersants.
- guar, starch and Cellulose include, for example, naturally occurring polysaccharides such as guar, starch and Cellulose. Quebracho, tannin, dextrin (white dextrin, British gum, Yellow dextrin) and other chemical derivatives. These include derivatives in particular the starch, guar and cellulose molecules, their hydroxyl groups with a wide range of anionic, cationic and nonionic functionalities can be equipped. Typical anionic derivatives are carboxylates, sulfates, sulfonates, xanthates, phosphates. Typical cationic derivatives are epoxypropyl trimethyl ammonium salts, while nonionic Compounds mainly used methyl, hydroxyethyl and hydroxypropyl derivatives become.
- anionic derivatives are carboxylates, sulfates, sulfonates, xanthates, phosphates.
- Typical cationic derivatives are epoxypropyl trimethyl ammonium
- the ester quats are used in silicate flotation.
- the invention therefore furthermore relates to flotation aids containing esterquats of the formula (I) as defined above.
- the ester quats, as well as fatty alcohols and / or quaternary ammonium compounds of the formula (II) are contained in the flotation aids according to the invention.
- the flotation aids according to the invention can contain solvents in a proportion of 0.1 to 40% by weight, preferably 1 to 30% by weight and particularly preferably 2 to 15% by weight. Suitable solvents are both the alcohols of the C chain length 5 to 8 already described in another context, but alcohols with a lower chain length can also be used as solvents.
- the flotation aids according to the invention can contain minor amounts of glycols such as ethylene glycol, propylene glycol or butylene glycol, but also monofunctional linear or branched alcohols such as ethanol, n-propanol or iso-propanol.
- glycols such as ethylene glycol, propylene glycol or butylene glycol
- monofunctional linear or branched alcohols such as ethanol, n-propanol or iso-propanol.
Landscapes
- Detergent Compositions (AREA)
- Physical Water Treatments (AREA)
- Paper (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
In der Regel gilt hier, daß die Vermahlung der Erze so fein sein sollte, daß die einzelnen Feinkörner lediglich aus einer Sorte von Mineralien, entweder den Wertmineralien oder den Verunreinigungen, bestehen. Die ideale Korngröße muß dabei üblicherweise in Abhängigkeit vom jeweiligen Mineral ermittelt werden. Im vorliegenden Fall hat sich jedoch eine Korngrößenverteilung von etwa 5 bis 500 µm als in der Regel praktikabel herausgestellt, wobei im Einzelfall engere Verteilungen von Vorteil sein können. So lassen sich beispielsweise silikatreiche Erze mit den erfindungsgemäßen Mitteln dann mit hervorragenden Ergebnissen flotativ trennen, wenn möglichst weniger als 40, bevorzugt weniger als 30 und insbesondere bevorzugt weniger als 15 Gew.-% der gesamten Erzfraktion Korngrößen von weniger als 250 µm aufweisen. Im Sinne einer optimierten Ausführung kann es besonders bevorzugt sein, wenn die Anteile von Korngrößen oberhalb 125 µm geringer als 15 Gew.-% oder bevorzugt geringer als 10 oder 6 Gew.-% sind. Die untere Grenze der Korngrößen wird sowohl durch die Möglichkeit der maschinellen Zerkleinerung als auch durch die Handhabbarkeit der abfiotierten Bestandteile bestimmt. In der Regel sollten mehr als 20 Gew.-% des Gesteinsmehl eine geringere Größe als etwa 50 µm aufweisen, wobei ein Anteil von Partikeln dieses Durchmessers von mehr als beispielsweise 30 oder 40 Gew.-% zu bevorzugen ist. Im erfindungsgemäßen Sinne ist es besonders vorteilhaft, wenn mehr als 40 Gew.-% der Erzpartikel einen Durchmesser von weniger als 45 µm aufweisen.
Bekannte kationische Sammler sind beispielsweise primäre aliphatische Amine, insbesondere die von den Fettsäuren der pflanzlichen und tierischen Fette abstammenden Fettamine, sowie bestimmte alkylsubstituierte und hydroxyalkyksubstituierte Alkylendiamine und die wasserlöslichen Salze dieser Amine.
Besonders gute Ergebnisse bei der Silikatflotation ergibt die Verwendung der Esterquats zusammen mit Fettsäurehydroxyethylimidazolinen und/oder Fettsäureaminoethyl-imidazolinen und/oder Fettsäureaminoethanolamiden und/oder Fettacylamido-fettsäureimidazoliniumsalzen und/oder Carbonsäureamidoalkylaminen.
Eine wichtige Klasse von kationischen Verbindungen sind die quarternären Ammoniumverbindungen. Es ist daher bevorzugt, die Esterquats zusammen mit quarternären Ammoniumverbindungen der Formel (IV) wobei R5, R6, R7 und R8 lineare und/oder verzweigte Alkyl- und/oder Alkenylreste mit 1 bis 24 C-Atomen darstellen,
in einem Mischungsverhältnis von 0,01:1 bis 100:1einzusetzen. Bevorzugt werden hierbei etwa Trimethylalkyl(talg)ammoniumchlorid (R5, R6 R7 = Methyl, R8 - C-Kettenverteilung der Talgfettsäuren) oder Dimethyldikokosalkylammoniumchlorid (R5 R6 = Methyl; R7 R8 = C-Kettenverteilung der Kokosfettsäuren) zugegeben. Es handelt sich hierbei um Gemische von Verbindungen der Formel (II), wie sie beim Aufarbeiten von Fettsäureschnitten wie beispielsweise Talgfettsäure oder Kokosfettsäure mit nachfolgender Umsetzung zur entsprechenden quarternären Ammoniumverbindung erhältlich sind.
Als Lösemittel eignen sich sowohl die schon in anderem Zusammenhang beschriebenen Alkohole der C-Kettenlänge 5 bis 8, es können aber auch Alkohole mit niedrigerer Kettenlänge als Lösemittel eingesetzt werden. So können die erfindungsgemäßen Flotationshilfsmittel in untergeordneten Mengen Glycole wie beispielsweise Ethylenglycol, Propylenglycol oder Butylenglycol, aber auch monofunktionelle lineare oder verzweigte Alkohole wie z.B. Ethanol, n-Propanol oder iso-Propanol enthalten.
Tabelle 1 zeigt hierzu die Ergebnisse verschiedener Flotationshilfsmittel in denen mindestens ein erfindungsgemäßer Sammler enthalten ist. Tabelle 2 zeigt die Wirksamkeit verschiedener Sammlertypen, sowohl erfindungsgemäß als auch herkömmlich, unter Bedingungen erhöhter Magnesiumkonzentrationen.
- OMC 6317
- = Schäumer (Fa. Henkel)
- OMC6024
- = Schäumer (Fa. Henkel)
- AU 46
- = Biologisch abbaubarer Esterquat (Fa Henkel)
- AU 56
- = Biologisch abbaubarer Esterquat (Fa Henkel)
- DKMA
- = Dikokosalkyldimethylammoniumchlorid
- TTAC
- =Trimethyltalgammoniumchlorid
- OMC 5044
- = Kationischer Sammler von Henkel
A | = Austrag | AG | = Aufgabe |
F | = flotiertes Material | conc. | = Rest |
- Korngrößenverteilung: > 40 µm: >50 Gew.-%
- Silikate: ca. 1.5 bis 2.5 Gew.-%
- Calzit: ca. 97.5 bis 98.5 Gew.-%
Wirksamkeit verschiedener Sammler bei erhöhter Magnesiumkonzentration | ||||||
Produkt | AS % | Zugabe AS | Einwaage Produkt g | Testlösung | Schaumhöhe (ml) | Halbwertzeit min (Dez.) |
AU 46 | 90 | 1 % | 2,26 | 2 % MgCl2-Lsg. | 220 | 2:35 (2,58) |
2,29 | 2 % MgCl2-Lsg. | 220 | 2:35 (2,58) | |||
AU 36 | 85 | 1 % | 2,38 | 2 % MgCl2-Lsg. | 220 | 3:40 (3,67) |
2,45 | 2 % MgCl2-Lsg. | 220 | 3:40 (3,67) | |||
DKMA | 77 | 1 % | 2,6 | 2 % MgCl2-Lsg. | 220 | Schaum stabil |
2,6 | 2 % MgCl2-Lsg. | 220 | Schaum stabil | |||
TTAC | 52 | 1 % | 3,85 | 2 % MgCl2-Lsg. | 840 | 6:10 (6,17) |
3,85 | 2 % MgCl2-Lsg. | 850 | 6:10 (6,17) | |||
AU 46 | 90 | 1 % | 2,27 | 5 % MgCl2-Lsg. | 220 | 0:30 (0,5) |
2,54 | 5 % MgCl2-Lsg. | 220 | 0:30 (0,5) | |||
AU 36 | 85 | 1 % | 2,37 | 5 % MgCl2-Lsg. | 220 | 0:20 (0,33) |
2,39 | 5 % MgCl2-Lsg. | 220 | 0:20 (0,33) | |||
DKMA | 77 | 1 % | 2,6 | 5 % MgCl2-Lsg. | 220 | Schaum stabil |
TTAC | 52 | 1 % | 3,85 | 5 % MgCl2-Lsg. | 820 | 7:20 (7,33) |
3,85 | 5 % MgCl2-Lsg. | 820 | 7:20 (7,33) | |||
Tabelle 2 zeigt, daß einzig die erfindungsgemäßen Sammler zu leicht brechenden Schäumen mit geringer Halbwertzeit führen, wie sie bei der Erzflotation wünschenswert sind. |
Claims (2)
- Verfahren zur Entfernung mineralischer Verunreinigungen, insbesondere von Silikaten, aus Erzgemischen durch Flotation, indem man gemahlenes Erzgemisch mit Wasser zu einer Suspension mischt, in die Suspension in Gegenwart eines Flotationshilfsmittels Luft einleitet und den entstandenen Schaum zusammen mit den darin enthaltenen flotierten Verunreinigungen abtrennt, dadurch gekennzeichnet, daß man quaternisierte Esterverbindungen (Esterquats) der allgemeinen Formeln (I) wobei R1CO für einen Acylrest mit 6 bis 24 Kohlenstoffatomen, R2 für R1CO, R3 R4 und R5 unabhängig voneinander für Alkylreste mit 1 bis 4 Kohlenstoffatomen, m und n in Summe für 0 oder Zahlen von 1 bis 12 und X für Halogenid, Alkylsulfat oder Alkylphosphat steht,
einzeln oder im Gemisch, gegebenenfalls zusammen mit weiteren anionischen, kationischen, amphoteren und/oder nichtionischen Substanzen als Sammlerkomponente einsetzt. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß durch die Formeln (I) beschriebenen Esterquats zusammen mit quarternären Ammoniumverbindungen (QAV) der Formel (II), wobei R5, R6, R7 und R8 lineare und/oder verzweigte Alkyl- und/oder Alkenylreste mit 1 bis 24 C-Atomen darstellen,
in einem Mischungsverhältnis Esterquat:QAV von 0,01:1 bis 100:1 eingesetzt werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19602856A DE19602856A1 (de) | 1996-01-26 | 1996-01-26 | Biologisch abbaubare Esterquats als Flotationshilfsmittel |
DE19602856 | 1996-01-26 | ||
EP19970901048 EP0876222B1 (de) | 1996-01-26 | 1997-01-17 | Biologisch abbaubare esterquats als flotationshilfsmittel |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970901048 Division EP0876222B1 (de) | 1996-01-26 | 1997-01-17 | Biologisch abbaubare esterquats als flotationshilfsmittel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1025908A1 true EP1025908A1 (de) | 2000-08-09 |
EP1025908B1 EP1025908B1 (de) | 2002-04-03 |
Family
ID=7783797
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00107539A Expired - Lifetime EP1025908B1 (de) | 1996-01-26 | 1997-01-17 | Biologisch abbaubare Esterquats als Flotationshilfsmittel |
EP19970901048 Expired - Lifetime EP0876222B1 (de) | 1996-01-26 | 1997-01-17 | Biologisch abbaubare esterquats als flotationshilfsmittel |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970901048 Expired - Lifetime EP0876222B1 (de) | 1996-01-26 | 1997-01-17 | Biologisch abbaubare esterquats als flotationshilfsmittel |
Country Status (10)
Country | Link |
---|---|
EP (2) | EP1025908B1 (de) |
KR (1) | KR19990067053A (de) |
AT (2) | ATE215404T1 (de) |
AU (1) | AU708335B2 (de) |
BR (1) | BR9707082A (de) |
DE (3) | DE19602856A1 (de) |
ES (2) | ES2174784T3 (de) |
MX (1) | MX9805334A (de) |
WO (1) | WO1997026995A1 (de) |
ZA (1) | ZA97573B (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007122148A1 (en) * | 2006-04-21 | 2007-11-01 | Akzo Nobel N.V. | Reverse froth flotation of calcite ore |
WO2011147855A3 (en) * | 2010-05-28 | 2012-03-08 | Akzo Nobel Chemicals International B.V. | Use of quaternary ammonium compounds as collectors in froth flotation processes |
US8474627B2 (en) | 2007-01-26 | 2013-07-02 | Cognis Ip Management Gmbh | Process for the flotation of non-sulfidic minerals and ores |
CN104520009A (zh) * | 2012-06-30 | 2015-04-15 | 科莱恩金融(Bvi)有限公司 | 在提纯碳酸钙的反浮选方法中防止泡沫 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000050003A1 (de) * | 1999-02-25 | 2000-08-31 | Chaperon Remy A | Hydrophobe, rheologisch wirksame mittel, verfahren zu ihrer herstellung und ihre verwendung |
SE514435C2 (sv) | 1999-04-20 | 2001-02-26 | Akzo Nobel Nv | Kvartära ammoniumföreningar för skumflotation av silikater från järnmalm |
EP1944088A1 (de) | 2007-01-12 | 2008-07-16 | Omya Development Ag | Verfahren zur Reinigung von Mineralien basierend auf Calciumcarbonat mittels Flotation bei Vorhandensein von quarternären Imidazoliummethosulfaten |
EP1949964A1 (de) * | 2007-01-26 | 2008-07-30 | Cognis IP Management GmbH | Verfahren für die Flotation nichtsulfidischer Mineralien und Erze |
DE102008056338B4 (de) * | 2008-11-07 | 2012-02-16 | Clariant International Ltd. | Flotationsreagenz für silikathaltige Mineralien |
DE102009055379A1 (de) | 2009-12-29 | 2011-06-30 | Yara International Asa | Abwasserbehandlungsmittel zur Fettbeseitigung und Verfahren zur Abwasserbehandlung |
DE102010004893A1 (de) * | 2010-01-19 | 2011-07-21 | Clariant International Limited | Flotationsreagenz für magnetit- und/oder hämatithaltige Eisenerze |
CN104646186A (zh) * | 2015-01-30 | 2015-05-27 | 武汉理工大学 | 一种三酯基季铵盐阳离子捕收剂及其制备方法和应用 |
FR3047674B1 (fr) | 2016-02-16 | 2018-02-16 | Arkema France | Utilisation d'amines alkoxylees en tant qu'agents collecteurs pour l'enrichissement de minerai |
FR3047675B1 (fr) | 2016-02-16 | 2018-02-16 | Arkema France | Utilisation d'amines alkoxylees en tant qu'agents collecteurs pour l'enrichissement de minerai |
EP3208314B1 (de) | 2016-02-16 | 2018-08-15 | Omya International AG | Verfahren zur herstellung von produkten mit weissen pigmenten |
EP3208315A1 (de) | 2016-02-16 | 2017-08-23 | Omya International AG | Verfahren zur herstellung von produkten mit weissen pigmenten |
EP3444036A1 (de) | 2017-08-16 | 2019-02-20 | Omya International AG | Umgekehrtes flotationsverfahren zur herstellung von produkten mit weissen pigmenten |
EP3740319B1 (de) | 2018-01-16 | 2024-04-03 | Clariant International Ltd | Esterquats zur flotation von nicht-sulfidischen mineralien und erzen und verfahren |
US12180341B2 (en) * | 2019-06-06 | 2024-12-31 | Basf Se | Collectors for flotation process |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2177985A (en) * | 1938-03-09 | 1939-10-31 | Benjamin R Harris | Ore dressing |
SU1461514A1 (ru) * | 1986-11-18 | 1989-02-28 | Институт минеральных ресурсов | Способ обогащени железосодержащих руд |
DE4224714A1 (de) * | 1992-07-27 | 1994-02-03 | Henkel Kgaa | Schäumende Detergensgemische |
WO1994026419A1 (en) * | 1993-05-19 | 1994-11-24 | Berol Nobel Ab | Method of floating calcium carbonate ore and flotation reagent therefor |
-
1996
- 1996-01-26 DE DE19602856A patent/DE19602856A1/de not_active Withdrawn
-
1997
- 1997-01-17 AU AU14431/97A patent/AU708335B2/en not_active Ceased
- 1997-01-17 DE DE59706919T patent/DE59706919D1/de not_active Expired - Fee Related
- 1997-01-17 ES ES00107539T patent/ES2174784T3/es not_active Expired - Lifetime
- 1997-01-17 WO PCT/EP1997/000186 patent/WO1997026995A1/de not_active Application Discontinuation
- 1997-01-17 AT AT00107539T patent/ATE215404T1/de active
- 1997-01-17 KR KR1019980702991A patent/KR19990067053A/ko not_active Application Discontinuation
- 1997-01-17 EP EP00107539A patent/EP1025908B1/de not_active Expired - Lifetime
- 1997-01-17 BR BR9707082A patent/BR9707082A/pt unknown
- 1997-01-17 DE DE59711869T patent/DE59711869D1/de not_active Expired - Fee Related
- 1997-01-17 EP EP19970901048 patent/EP0876222B1/de not_active Expired - Lifetime
- 1997-01-17 AT AT97901048T patent/ATE274377T1/de active
- 1997-01-17 ES ES97901048T patent/ES2227665T3/es not_active Expired - Lifetime
- 1997-01-23 ZA ZA97573A patent/ZA97573B/xx unknown
-
1998
- 1998-06-30 MX MX9805334A patent/MX9805334A/es unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2177985A (en) * | 1938-03-09 | 1939-10-31 | Benjamin R Harris | Ore dressing |
SU1461514A1 (ru) * | 1986-11-18 | 1989-02-28 | Институт минеральных ресурсов | Способ обогащени железосодержащих руд |
DE4224714A1 (de) * | 1992-07-27 | 1994-02-03 | Henkel Kgaa | Schäumende Detergensgemische |
WO1994026419A1 (en) * | 1993-05-19 | 1994-11-24 | Berol Nobel Ab | Method of floating calcium carbonate ore and flotation reagent therefor |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 8935, Derwent World Patents Index; Class E16, AN 89-254718, XP002030309 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007122148A1 (en) * | 2006-04-21 | 2007-11-01 | Akzo Nobel N.V. | Reverse froth flotation of calcite ore |
US8353405B2 (en) | 2006-04-21 | 2013-01-15 | Akzo Nobel N.V. | Reverse froth flotation of calcite ore |
US8474627B2 (en) | 2007-01-26 | 2013-07-02 | Cognis Ip Management Gmbh | Process for the flotation of non-sulfidic minerals and ores |
USRE46235E1 (en) | 2007-01-26 | 2016-12-13 | Cognis IP Management CMBH | Process for the separation of non-sulfidic minerals and ores from unwanted constituents of crude mineral and ore |
WO2011147855A3 (en) * | 2010-05-28 | 2012-03-08 | Akzo Nobel Chemicals International B.V. | Use of quaternary ammonium compounds as collectors in froth flotation processes |
CN102933310A (zh) * | 2010-05-28 | 2013-02-13 | 阿克佐诺贝尔化学国际公司 | 季铵化合物在泡沫浮选法中作为促集剂的用途 |
CN102933310B (zh) * | 2010-05-28 | 2014-04-16 | 阿克佐诺贝尔化学国际公司 | 季铵化合物在泡沫浮选法中作为促集剂的用途 |
US8936159B2 (en) | 2010-05-28 | 2015-01-20 | Akzo Nobel Chemicals International B.V. | Use of quaternary ammonium compounds as collectors in froth flotation processes |
CN104520009A (zh) * | 2012-06-30 | 2015-04-15 | 科莱恩金融(Bvi)有限公司 | 在提纯碳酸钙的反浮选方法中防止泡沫 |
Also Published As
Publication number | Publication date |
---|---|
BR9707082A (pt) | 1999-04-13 |
EP1025908B1 (de) | 2002-04-03 |
EP0876222B1 (de) | 2004-08-25 |
KR19990067053A (ko) | 1999-08-16 |
ES2174784T3 (es) | 2002-11-16 |
ATE274377T1 (de) | 2004-09-15 |
WO1997026995A1 (de) | 1997-07-31 |
DE59706919D1 (de) | 2002-05-08 |
AU708335B2 (en) | 1999-08-05 |
DE19602856A1 (de) | 1997-07-31 |
DE59711869D1 (de) | 2004-09-30 |
ZA97573B (en) | 1997-07-28 |
MX9805334A (es) | 1998-10-31 |
EP0876222A1 (de) | 1998-11-11 |
ES2227665T3 (es) | 2005-04-01 |
AU1443197A (en) | 1997-08-20 |
ATE215404T1 (de) | 2002-04-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1025908B1 (de) | Biologisch abbaubare Esterquats als Flotationshilfsmittel | |
DE69904820T2 (de) | Herstellung von kollektorzusammensetzungen aus mischungen von hydroxamfettsäuren und öl zur erzflotation | |
EP0201815B1 (de) | Verwendung von Tensidgemischen als Hilfsmittel für die Flotation von nichtsulfidischen Erzen | |
EP1949963B1 (de) | Verfahren für die Flotation nichtsulfidischer Mineralien und Erze | |
DE102008056338B4 (de) | Flotationsreagenz für silikathaltige Mineralien | |
EP0270933B1 (de) | Tensidmischungen als Sammler für die Flotation nichtsulfidischer Erze | |
EP0609257B1 (de) | Verfahren zur herstellung von eisenerzkonzentraten durch flotation | |
EP0585277B1 (de) | Verfahren zur gewinnung von mineralien aus nichtsulfidischen erzen durch flotation | |
EP1949964A1 (de) | Verfahren für die Flotation nichtsulfidischer Mineralien und Erze | |
EP0298392A2 (de) | Verfahren zur Gewinnung von Mineralen aus sulfidischen aus Erzen durch Flotation und Mittel zu seiner Durchführung | |
DD294195A5 (de) | Verfahren zur gewinnung von mineralien durch schaumflotation | |
EP0219057B1 (de) | Verwendung von Gemischen enthaltend nichtionische Tenside als Hilfsmittel für die Flotation von nichtsulfidischen Erzen | |
DE3128755A1 (de) | 3-alkoxipropylenimino-bis(methylenphosphonsaeuren) und deren salze, verfahren zu deren herstellung und deren verwendung | |
EP0270018B1 (de) | Verwendung von N-Alkyl- und N-Alkenylasparaginsäuren als Co-Sammler für die Flotation nichtsulfidischer Erze | |
DE10055126C1 (de) | Sammler für die Aufbereitung von Nicht-Eisen-Metallsulfiden und seine Verwendung | |
EP3740319B1 (de) | Esterquats zur flotation von nicht-sulfidischen mineralien und erzen und verfahren | |
DE3641870A1 (de) | Alkylsulfosuccinate auf der basis von propoxylierten sowie propoxylierten und ethoxylierten fettalkoholen als sammler fuer die flotation nichtsulfidischer erze | |
DE4325017A1 (de) | Verfahren zur Flotation von Kupfer- und Kobalterzen | |
EP0344553B1 (de) | Tensidmischungen als Sammler für die Flotation nichtsulfidischer Erze | |
DE4010279A1 (de) | Verfahren zur gewinnung von mineralien aus nichtsulfidischen erzen durch flotation | |
DE4016792A1 (de) | Verfahren zur gewinnung von mineralien aus nichtsulfidischen erzen durch flotation | |
EP0544185A1 (de) | Verfahren zur Gewinnung von Mineralien aus nichtsulfidischen Erzen durch Flotation | |
DE69009982T2 (de) | Monosulfonierte Alkyldiaryloxyde als Sammler für die Erzflotation. | |
CA2244899A1 (en) | Biologically degradable esterquats as flotation aids | |
DE3636530A1 (de) | Verwendung von sammlergemischen als hilfsmittel fuer die flotation von nichtsulfidischen erzen, insbesondere cassiterit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20000502 |
|
AC | Divisional application: reference to earlier application |
Ref document number: 876222 Country of ref document: EP |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE ES FI FR GB GR IE IT NL SE |
|
AKX | Designation fees paid |
Free format text: AT DE ES FI FR GB GR IE IT NL SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20010712 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AC | Divisional application: reference to earlier application |
Ref document number: 876222 Country of ref document: EP |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE ES FI FR GB GR IE IT NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020403 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20020403 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020403 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020403 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020403 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020403 |
|
REF | Corresponds to: |
Ref document number: 215404 Country of ref document: AT Date of ref document: 20020415 Kind code of ref document: T |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: COGNIS DEUTSCHLAND GMBH & CO. KG |
|
REF | Corresponds to: |
Ref document number: 59706919 Country of ref document: DE Date of ref document: 20020508 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
NLT2 | Nl: modifications (of names), taken from the european patent patent bulletin |
Owner name: COGNIS DEUTSCHLAND GMBH & CO. KG |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20020403 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2174784 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D Ref document number: 1025908E Country of ref document: IE |
|
EN | Fr: translation not filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20030106 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030801 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20160223 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20160127 Year of fee payment: 20 Ref country code: FI Payment date: 20160122 Year of fee payment: 20 Ref country code: SE Payment date: 20160129 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK07 Ref document number: 215404 Country of ref document: AT Kind code of ref document: T Effective date: 20170117 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20170426 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20170118 |