WO2007022942A1 - Stevensit- und/oder kerolith-haltige adsorbentien zur störstoffbindung in der papierherstellung - Google Patents
Stevensit- und/oder kerolith-haltige adsorbentien zur störstoffbindung in der papierherstellung Download PDFInfo
- Publication number
- WO2007022942A1 WO2007022942A1 PCT/EP2006/008214 EP2006008214W WO2007022942A1 WO 2007022942 A1 WO2007022942 A1 WO 2007022942A1 EP 2006008214 W EP2006008214 W EP 2006008214W WO 2007022942 A1 WO2007022942 A1 WO 2007022942A1
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- WIPO (PCT)
- Prior art keywords
- stevensite
- pulp
- containing component
- paper
- kerolith
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
Definitions
- the present invention relates to the use of stevensite and / or cerolite-containing materials in the binding or removal of contaminants in papermaking.
- Disturbance removal or binding in papermaking is becoming increasingly important.
- the problem is also based on the fact that the paper obtained in the production of water is recycled, with impurities gradually accumulate in it.
- These contaminants can thus lead to a wide variety of product failures, such as the formation of deposits on the rolls of the paper machine, the gluing of the screens, etc.
- These effects lead to interruptions in the paper production.
- humic acids for example, humic acids, tree resin colloids, lingin derivatives, lignin sulfonates, which are introduced from the fibers into the paper cycle.
- contaminants that are introduced into the paper machine by recycling paper broke. This paper break is typically redispersed and introduced into the paper machine. As a result, the ingredients and aids contained in it are completely recycled.
- carboxymethylcelluloses, polyacrylates, polyphosphonates and silicates are additionally registered.
- Other charged impurities are the latices used in the paper coating. These can be highly prone to agglomeration, the agglomerates being deposited as sticky, white residues on the paper machine (so-called white pitch).
- US Pat. No. 5,368,962 describes the use of montmorillonites, such as bentonite, for controlling impurities in the pulp. Also, the alkali treatment of bentonites is addressed as a possibility.
- US 4,964,955 also describes a method for reducing the impurities in papermaking. This is where for impurity binding, a particulate composition comprising (a) a water-soluble cationic polymer coated on (b) a substantially water-insoluble particulate substrate.
- the polymer should be sufficiently electropositive so that the particulate composition has a zeta potential of at least about +30 mV.
- the polymer is preferably a poly (dialkyldialylammonium halide).
- the substrate is, for example, a phyllosilicate mineral.
- EP 0 760 406 A2 relates to a combination of a poly (dadmac / acrylamide) and a bentonite in impurity bonding.
- GB 2 297 334 A again discloses the use of a smectite clay for impurity control wherein the smectite clay is modified as follows: monovalent exchangeable cations are present in an equivalent ion content in the range of 0.20 to 0.60 ; a first type of bivalent exchangeable cations is present in an equivalent ion content in the range of 0.40 to 0.80; and a second type of bivalent exchangeable cations is present in an equivalent ion content in the range of 0.00 to 0.20, the first type of bivalent exchangeable cations comprising calcium and the second type of bivalent exchangeable cations comprising magnesium.
- stevensite and / or kerosine-containing components in a papermaking process makes it possible to excellently bind or remove contaminants.
- the stevensite and / or kerolith-containing components bind or sorb impurities, including their hydrophobic components, to a surprisingly high degree.
- These components can therefore also be regarded as sorbents or adsorbents or absorbents, these terms being used here to mean the same thing for the sake of simplicity.
- impurities include both sticky substances, also referred to in the literature as “adhesives” or “stickies”, and the so-called “pitch”. primarily tree resin components, understood.
- glue primarily tree resin components, understood.
- a detailed listing of the "pitch” and “stickies” ingredients can be found, for example, in WO01 / 09424 on pages 1 and 2, and the disclosure therein is hereby expressly incorporated by reference into the present specification.
- a particularly preferred aspect relates to the use of at least one stevensite and / or cerolite-containing component for binding or removing hydrophobic contaminants in a papermaking process.
- the component used contains stevensite or a stevensite phase.
- a material which has the characteristic diffraction peak at the lattice spacing (basal spacing) 10 ⁇ according to Brindley et al (loc. Cit.), And preferably also the displacement of this peak at different humidities described therein, is regarded as stevensite or stevensit inconvenience component or treatment with ethylene glycol (see below). Also, the difference is close to 17 ⁇ in the treatment with ethylene glycol.
- aaO GB Brindley et al.
- the reference Brindley et al. loc. cit.
- the position of the diffraction peak at the lattice spacing of about 10 ⁇ is characteristic.
- the Stevensit used differs, for example, from pure Keololith.
- the term "stevensite” is intended here to include simplicity stevensit restroom components.
- the term "stevensite-containing component" is intended to express that, according to the invention, it is also possible to use components which, in addition to stevensite, also contain further constituents. For example, many commercially available stevensite products contain stevensite in addition to varying amounts of supporting minerals. In addition, blends of stevensite with other ingredients, such as other mineral constituents, in particular phyllosilicates, conceivable.
- At least one stevensite and / or kerolith-containing component is used, which consists essentially or completely of stevensite or of at least one stevensitumblen component.
- the component used contains Kerolith or a Kerolithphase.
- kerolith is familiar to the person skilled in the art and need not be explained in more detail here.
- Brindley et al. (supra).
- the determination of kerolith can be carried out as described there.
- the chemical analysis of kerolite gives a composition close to R 3 Si 4 Oi 0 (OH) 2 -nH 2 O where R is mainly Mg and n is about 0.8 to 1.2.
- Characteristic is the diffraction peak at lattice spacing (basal spacing) 10 ⁇ , the position at different humidities no expansion and up to 500 0 C shows no thermal contraction.
- explicit reference is made to GB Brindley et al. (aaO) in Fig.
- Kerolith is here to include simplicity kerber-containing components.
- kerolith liquor component is intended to express that according to the invention also components can be used, which contain other ingredients in addition to kerolith.
- many commercially available kerolith products contain different amounts of adjunct minerals besides kerolith.
- mixtures of kerolith with other constituents, such as other mineral constituents, in particular phyllosilicates, are conceivable.
- At least one stevensite and / or kerolith-containing component is used, which consists essentially or completely of kerolith or at least one kerolith-containing component.
- the component used contains both stevensite or a stevensite phase and also kerolith or a kerolith phase. It has been found that such stevensite- and kerolith-containing components show particularly good impurity binding properties.
- the stevensite and / or cerolite-containing component used contains at least 10% by weight, preferably at least 50% by weight, in particular at least 75% by weight, particularly preferably at least 90% by weight, particularly preferably at least 95% by weight of stevensite and / or kerolith.
- at least 10% by weight preferably at least 50% by weight, in particular at least 75% by weight, particularly preferably at least 90% by weight, particularly preferably at least 95% by weight of stevensite and / or kerolith.
- stevensite- and / or cerolite-containing components are suitable which have a magnesium oxide content of at least 15% by weight, in particular at least 17% by weight, more preferably at least 20% by weight .-%, exhibit.
- Corresponding materials are commercially available.
- the magnesium oxide content of the stevensite and / or kerolith-containing components used, in particular the stevensite or the stevensitumblen component not more than 40 wt .-%, in particular not more than 35 wt .-%, in many cases more preferably not over 32% by weight.
- the content of magnesium oxide is also decisive for the exact formation of the layer structure of the material. It is believed, without the invention being limited to the correctness of this assumption, that the layer structure of the material used according to the invention, in particular the stevensite, provides a particularly favorable porosimetry and particularly efficient surfaces for adsorbing a multiplicity of different impurities.
- the BET surface area (measured according to DIN 66131, see method section) is preferably at least 60 va 2 / q, in particular at least 80 m 2 / g, in particular at least 100 m 2 / g , These high BET surface areas obviously make adsorption even more efficient for some contaminants.
- CEC cation exchange capacity
- such stevensite and / or kerolith-containing components are used whose CEC is at least 2 meq / 100 g, preferably at least 5 meq / 100 g, in particular at least 10 meq / 100 g, more preferably at least 15 meq / 100 g is.
- CEC Core exchange capacity
- the cation exchange capacity thus includes, for example, the sum of all exchangeable divalent and monovalent cations, such as calcium, magnesium, sodium, lithium and potassium ions.
- the stevensite and / or cerolite-containing component is treated with an ammonium chloride solution. In this case, because of the high affinity of the ammonium ions for the stevensite and / or kerolith-containing component, virtually all exchangeable cations are exchanged for ammonium ions. After separation and washing, the nitrogen content of the stevensite and / or kerolith-containing components is determined and from this the content of ammonium ions is calculated.
- the stevensite and / or kerolith-containing components used according to the invention surprisingly have a significantly better effect on the impurity removal than the products conventionally used, such as, for example, Talk.
- activation here means an at least partial replacement of the interlayer cations, in particular of the bivalent or multivalent intermediate layer cations of the stevensite in the stevensite-containing component, with monovalent cations.
- the monovalent cations exchanged can in particular be H + or one or more alkali cations.
- Preferred forms of activation are activations using acid or alkali.
- a preferred, non-limiting example of alkali activation is activation with soda.
- the pit-moist clay which usually has water contents between 25 and 40% by weight of moisture with up to 5% by weight, in particular up to 4% by weight of soda, potassium carbonate or other salts of alkali ions such.
- Acid activation of the stevensite-containing component may generally be by treatment with one or more acids be performed.
- the component is brought into contact with at least one inorganic and / or organic acid.
- any method known to those skilled in the art for acid activation of clays can be used.
- it is not necessary that the excess acid and the salts formed during the activation are washed out. Rather, after the task of acid, as usual in the acid activation, no washing step is carried out, but dried the treated component and optionally ground to the desired grain size.
- the acid activation can be carried out, for example, with acids in solid form or with an acid solution.
- the activation of the component is carried out in the aqueous phase.
- the acid is brought into contact with the stevensite-containing component as an aqueous solution.
- the Stevensite-containing component which is preferably provided in the form of a powder, in water.
- the acid is added, for example in concentrated form.
- the stevensite-containing component can also be slurried directly in an aqueous solution of the acid, or the aqueous solution of the acid can be applied to the stevensite-containing component.
- the aqueous acid solution may, for example, be sprayed onto a preferably crushed or powdered stevensite-containing component, the amount of water being preferably chosen as low as possible.
- a concentrated acid or acid solution is used here.
- the amount of acid may preferably be between 1 and 10% by weight, more preferably between 2 and 6% by weight of a strong acid, in particular a mineral acid, such as Sulfuric acid, based on the anhydrous stevensite-containing component (atro) can be selected.
- the activated stevensite-containing component optionally ground to the desired fineness.
- no washing step is required. After application of the aqueous solution of the acid is only, if necessary, dried until reaching the desired moisture content. Most of the water content of the resulting activated stevensite-containing component is adjusted to a level of less than 20 wt .-%, preferably less than 10 wt .-%.
- the acid itself can be chosen as desired. Both mineral acids and organic acids or mixtures of the above acids can be used. Usual mineral acids may be used, such as hydrochloric acid, phosphoric acid or sulfuric acid, with sulfuric acid being preferred. Concentrated or diluted acids or acid solutions can be used. As organic acids, e.g. Citric acid or oxalic acid can be used.
- the stevensite and / or cerolite-containing component based on the CEC has a content of at least 50%, in particular at least 80%, of monovalent cations such as H + , Na + , K + , and / or Li + on. This proportion can be achieved or increased, for example, by activation of the component with acid or an alkali salt (eg soda). Particularly preferred are at least 90%, especially about 100% monovalent cations, based on the CEC of the stevensite and / or kerolith-containing component.
- the process of the present invention using the stevensite and / or keritol-containing components described herein can be used generally in all paper or board making processes.
- paper pulp and pulp suspension are intended to encompass generally all contaminant-containing compositions or streams used in the manufacture of paper, board, other fibrous materials or the like. Otherwise the terms “(paper) pulp” and “pulp suspension” are familiar to the person skilled in the art and need not be explained in more detail here.
- the pulp or pulp suspension is a wood (fine) slurry-containing suspension.
- Wood pulp is generally finely digested (finely ground wood, usually without further chemical or thermal treatment).
- the wood pulp suspension is either used directly after comminution or subjected to peroxide bleaching, in which case so-called peroxide-bleached wood pulp is produced.
- peroxide-bleached wood pulp is produced. It has surprisingly been found that the stevensite and / or kerolith-containing components used in wood pulp or peroxide-treated wood pulp containing paper grades shows particularly good results.
- the inventive method can also be used advantageously in other types of paper.
- the pulp or pulp suspension may also contain highly purified fiber fractions, as is the case with so-called news print paper, for example.
- the invention further provides very good results in so-called "deinked powder” (DIP substance). It is a pulp made from waste paper. In particular, there are hydrophobic stickies, from the glue of magazines and newspapers. These can also be incorporated well into the end product using the stevensite and / or kerolith-containing components used according to the invention.
- WEI Tere so-called paper materials in which the stevensite and / or kerolith-containing components according to the invention can be advantageously used include TMP material (Thermo Mechanical Pulp), sulfate pulp, sulfite pulp and mixtures of different pulps. Depending on the paper type and location of the paper mill, such pulps are mixed in different proportions and adapted to the material requirements of the final product.
- TMP material Thermo Mechanical Pulp
- sulfate pulp sulfite pulp
- mixtures of different pulps Depending on the paper type and location of the paper mill, such pulps are mixed in different proportions and adapted to the material requirements of the final product.
- the preferred wood pulp content in the paper pulp or pulp suspension is according to an advantageous embodiment of the invention at least 10 wt .-%; in particular at least 30% by weight, in each case based on the dry weight of the entire pulp or suspension.
- the at least one stevensite and / or cerolite-containing component in the process of the invention is likely to work, without which the invention would be limited to the correctness of this assumption by binding the interfering substances or interacts with them and thus the aggregation and deposition on the Parts of the paper machine, such as the rollers, counteracts.
- the concentration of impurities in papermaking is typically determined in the white water by the three common methods cation requirement (cationic charge demand), turbidity measurement and chemical oxygen demand.
- cation requirement cationic charge demand
- turbidity measurement it is assumed that the contaminants are all negatively charged and the white water is filtered in short-chain cationic polyelectrolyte. Consumption is converted into the so-called cation requirement.
- turbidity measurement it is assumed that the contaminants are partly colloidal and their concentration can be determined by the extinction caused by the turbidity.
- chemical oxygen demand the amount of organic compounds present is via an oxidizing agent tested.
- the addition of the at least one stevensite and / or kerolith-containing component used according to the invention to the pulp or pulp suspension can be carried out at any point in the papermaking industry suitable for the person skilled in the art. Especially recommended is the addition directly in the pulper, because there is the possibility of a long contact time to the pulp, and the likelihood of a high level of impurity binding is given. Additional additions are in the entire so-called thick matter area. Also conceivable is an addition for the "dissolved air flotation" for water purification. In many cases, the papermaking apparatuses used in each case will also have an already existing addition point for additives, e.g.
- a metering device or metering pump which can be used for the addition of the stevensite and / or kerolith-containing component (s) used according to the invention.
- the stevensite and / or kerolith-containing components can be used both in powder form, as well as in the form of a suspension or slurry.
- the suspension or slurry will in many cases allow for better meterability and is easier to automate in large-scale, continuous processes.
- the particle size of the stevensite and / or kerolith-containing components used according to the invention is selected such that the wet sieve residue is 45 ⁇ m less than 2% by weight, preferably less than 1% by weight, in particular less than 0.5 % By weight.
- the determination of the wet sieve residue is even closer to the examples explained.
- the preferred particle size can also be determined by the light scattering method (Malvern).
- the mean particle size (D50) (based on the sample volume) is between 0.5 and 10 ⁇ m, in particular between 2 and 8 ⁇ m, particularly preferably between 3 and 6 ⁇ m.
- the use of the stevensite and / or kerolith-containing components used according to the invention leads to a particularly good impurity binding, if the use of talcum is omitted in the process.
- the use of cationic polymers, e.g. Poly (dadmac) or polyacrylamide according to the prior art can be reduced or even completely omitted with the aid of the stevensite and / or kerolith-containing components used according to the invention.
- stevensite and / or cerolite-containing components in the process of the invention can be determined routinely by a person skilled in the art on the basis of empirical experiments. In most cases amounts are between 0.5 and 12 kg / t paper pulp or pulp suspension, preferably between 1 and 8 kg / t, in particular between 1.5 and 7 kg / t, in each case based on the anhydrous pulp / suspension (dry weight ), be beneficial.
- the process according to the invention not only allows a very good binding of anionic impurity fractions, such as fatty acids, but also outstanding binding or elimination of hydrophobic impurity fractions such as sterols, steryl esters and triglycerides.
- anionic impurity fractions such as fatty acids
- hydrophobic impurity fractions such as sterols, steryl esters and triglycerides.
- Another aspect of the present invention relates to the use of at least one stevensite and / or kerolith-containing component as described herein for impurity binding in papermaking.
- the at least one stevensite and / or kerolith-containing component is preferably used in a paper pulp or pulp suspension which contains groundwood particles.
- paper or pulp are included in the use according to the invention.
- DIP Substance so-called "Deinked PuIp” (DIP Substance), TMP (Thermo Mechanical Pulp), sulphate pulp, sulphite pulp and mixtures of different pulps.
- TMP Thermo Mechanical Pulp
- sulphate pulp sulphite pulp and mixtures of different pulps.
- the clay (the stevensite and / or kerolith-containing component) is treated with a large excess of aqueous NH 4 Cl solution, washed out and the amount of NH 4 + remaining on the clay determined according to Kjeldahl.
- Detection of the ionic freedom of the wash water is performed on NH 4 + ions with the sensitive Nessler's reagent.
- the washing rate can vary between 30 minutes and 3 days depending on the key.
- the washed out NH 4 + -TOn is removed from the filter, dried at 110 ° C for 2 hours, ground, sieved (63 micron sieve) and dried again at 110 0 C for 2 h. Thereafter, the NH 4 + content of the clay is determined according to Kjeldahl.
- Calculation of the CEC The CEC of the clay is the Kjeldahl NH 4 + content of the NH 4 + clay (CEC of some clay minerals, see Appendix). The data are given in mval / 100 g clay (meq / 100g).
- the cations released by the exchange are in the wash water (filtrate).
- the proportion and the type of monovalent cations ("exchangeable cations") was determined spectroscopically in the filtrate according to DIN 38406, part 22.
- the washing water (filtrate) is concentrated for AAS determination, transferred to a 250 ml volumetric flask and filled up with demineralised water up to the measuring mark. Suitable measuring conditions for FAAS can be found in the following tables.
- Instruments Analytical balance, plastic cup, Pendraulik LD 50; Sieve: 200 mm diameter, mesh size 0.025 (25 ⁇ m), 0.045 mm (45 ⁇ m), 0.053 mm (53 ⁇ m) or 0.063 mm (63 ⁇ m); Ultrasonic bath.
- the selected pulp (peroxide-bleached wood pulp) can either be obtained directly from the paper mill or stored in the refrigerator before use.
- the stock was then shaken well at 10 g dry to 1% with warm deionized water in a 2000 ml beaker. While stirring at 150 rpm, the pulp batch was heated to 40 ° C. with the aid of a hot plate. When the temperature is reached, the amount of adsorbent to be tested is added to the pulp batch by means of a Pasteur pipette. Then, the adsorption time in the material approach 30 is fixed min at 40 0 C and the mixture is stirred at 150 rpm.
- the recycled pulp ( “DIP”) was diluted to a solids content of 1% and 40 0 C warm water and with a stir bar, ( “ESGE wand” ESGE / Switzerland) s homogenized using the so-called. Impact disc 30 In stage II.
- the Dye Nile Red from Molecular Probes / Invitrogen Detection Technologies (Invitrogen Corporation, 1600 Faraday Avenue, PO Box 6482 Carlsbad, California 92008 USA) as recited in the previous article.
- Example 1 The invention will now be further illustrated by the following nonlimiting examples.
- Example 1 The invention will now be further illustrated by the following nonlimiting examples.
- the following two stevensite-containing materials were each used as milled raw clays, with the two raw clays ground to a common particle size for paper applications.
- a wet sieve residue of ⁇ 1% by weight was adjusted to 45 ⁇ m by the milling.
- the mean particle sizes (D50, volume related) were between 2 and 8 microns.
- the water content of the samples was 10 + 4%.
- Seventeenite as the main phase was prepared according to Brindley et al. (supra) and Martin de Vidales et al. (supra) confirmed.
- Sorb 1 and Sorb 2 a proportion of kerolith was also detectable.
- stevensite can be compared to kerolith and other smectic phyllosilicates u.a. Based on the powder X-ray diffractograms and the displacement of the diffraction pattern after treatment with ethylene glycol, after heating or at different humidities delimit. To characterize the materials according to the invention, it is also possible to use the magnesium oxide content and the CEC.
- FIG. 1 shows that the additives according to the invention markedly reduce the concentration of the hydrophobic particles in the white water, whereas the cationized valley used as a comparison shows no significant effects at the same use concentration.
- the white water is analyzed by flow cytometry as well as the gas chromatographic method according to Orsa and Hoimmbom (see above).
- Fig. 2 shows the results of flow cytometry.
- the two additives Sorb 1 and Sorb 2 according to the invention led to a significant reduction in the number of pitches. Particles in white water.
- the control material (cationized tale) did not show any significant effect even at a dose of 9 kg / t.
- Fig. 3 shows the characterization of white water by gas chromatography. The results found here correlate very well with those of flow cytometry.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06776998A EP1920111A1 (de) | 2005-08-23 | 2006-08-21 | Stevensit- und/oder kerolith-haltige adsorbentien zur störstoffbindung in der papierherstellung |
MX2008002390A MX2008002390A (es) | 2005-08-23 | 2006-08-21 | Adsorbentes que contienen estevensita y/o querolita para enlazar sustancias interferentes en la produccion de papel. |
CA002620089A CA2620089A1 (en) | 2005-08-23 | 2006-08-21 | Stevensite- and/or cerolite-containing adsorbents for binding interfering substances during the manufacturing of paper |
JP2008527376A JP2009506224A (ja) | 2005-08-23 | 2006-08-21 | 製紙における有害物質を結合するためのステベンサイトおよび/またはケロライトを含有する吸着剤 |
BRPI0614883-2A BRPI0614883A2 (pt) | 2005-08-23 | 2006-08-21 | adsorventes contendo stevensita e/ou cerolita para a ligação de substáncias de interferência na produção de papel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510039850 DE102005039850A1 (de) | 2005-08-23 | 2005-08-23 | Stevensit- und/oder Kerolith-haltige Adsorbentien zur Störstoffbindung in der Papierherstellung |
DE102005039850.2 | 2005-08-23 |
Publications (1)
Publication Number | Publication Date |
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WO2007022942A1 true WO2007022942A1 (de) | 2007-03-01 |
Family
ID=37076236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2006/008214 WO2007022942A1 (de) | 2005-08-23 | 2006-08-21 | Stevensit- und/oder kerolith-haltige adsorbentien zur störstoffbindung in der papierherstellung |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1920111A1 (de) |
JP (1) | JP2009506224A (de) |
BR (1) | BRPI0614883A2 (de) |
CA (1) | CA2620089A1 (de) |
DE (1) | DE102005039850A1 (de) |
MX (1) | MX2008002390A (de) |
WO (1) | WO2007022942A1 (de) |
ZA (1) | ZA200802224B (de) |
Families Citing this family (2)
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PL3260597T3 (pl) | 2016-06-22 | 2019-11-29 | Buchmann Ges Mit Beschraenkter Haftung | Wielowarstwowy wyrób z materiału włóknistego o spowolnionej szybkości migracji węglowodorów aromatycznych lub węglowodorów nasyconych i sposób jego wytwarzania |
JP6867207B2 (ja) * | 2017-03-28 | 2021-04-28 | 特種東海製紙株式会社 | ガラス板合紙用木材パルプ及びその使用、ガラス板用合紙、並びにガラス板合紙用木材パルプ又はガラス板用合紙の検査方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2200623A (en) * | 1987-02-02 | 1988-08-10 | Mizusawa Industrial Chem | Synthetic stevensite and its preparation |
WO1989006294A1 (en) * | 1988-01-07 | 1989-07-13 | Cyprus Industrial Minerals Company | Method of reducing pitch in pulping and papermaking |
JPH0247394A (ja) * | 1988-08-05 | 1990-02-16 | Mizusawa Ind Chem Ltd | 製紙用添加剤 |
WO1993013265A1 (en) * | 1991-12-21 | 1993-07-08 | Vinings Industries Inc. | Method for controlling pitch |
JPH0665892A (ja) * | 1992-08-19 | 1994-03-08 | Mizusawa Ind Chem Ltd | ピッチ吸着剤 |
EP0586755A1 (de) * | 1992-07-02 | 1994-03-16 | Ecc International Limited | Verfahren zur Harzkontrolle in der Papierherstellung |
WO1995009135A1 (en) * | 1993-09-30 | 1995-04-06 | Laporte Industries Limited | Stabilized, high solids, low viscosity smectite slurries, and method of preparation |
DE10063635A1 (de) * | 1999-12-23 | 2001-06-28 | Inst Francais Du Petrole | Trioctaedrische 2:1 Phyllosilikate vom Stevensit-oder Kerolittyp, Herstellungsverfahren und Verwendung bei der Katalyse |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5368692A (en) * | 1992-01-22 | 1994-11-29 | Vinings Industries Inc. | Method for controlling pitch |
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2005
- 2005-08-23 DE DE200510039850 patent/DE102005039850A1/de not_active Withdrawn
-
2006
- 2006-08-21 MX MX2008002390A patent/MX2008002390A/es active IP Right Grant
- 2006-08-21 CA CA002620089A patent/CA2620089A1/en not_active Abandoned
- 2006-08-21 BR BRPI0614883-2A patent/BRPI0614883A2/pt not_active Application Discontinuation
- 2006-08-21 WO PCT/EP2006/008214 patent/WO2007022942A1/de active Application Filing
- 2006-08-21 EP EP06776998A patent/EP1920111A1/de not_active Withdrawn
- 2006-08-21 ZA ZA200802224A patent/ZA200802224B/xx unknown
- 2006-08-21 JP JP2008527376A patent/JP2009506224A/ja active Pending
Patent Citations (8)
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GB2200623A (en) * | 1987-02-02 | 1988-08-10 | Mizusawa Industrial Chem | Synthetic stevensite and its preparation |
WO1989006294A1 (en) * | 1988-01-07 | 1989-07-13 | Cyprus Industrial Minerals Company | Method of reducing pitch in pulping and papermaking |
JPH0247394A (ja) * | 1988-08-05 | 1990-02-16 | Mizusawa Ind Chem Ltd | 製紙用添加剤 |
WO1993013265A1 (en) * | 1991-12-21 | 1993-07-08 | Vinings Industries Inc. | Method for controlling pitch |
EP0586755A1 (de) * | 1992-07-02 | 1994-03-16 | Ecc International Limited | Verfahren zur Harzkontrolle in der Papierherstellung |
JPH0665892A (ja) * | 1992-08-19 | 1994-03-08 | Mizusawa Ind Chem Ltd | ピッチ吸着剤 |
WO1995009135A1 (en) * | 1993-09-30 | 1995-04-06 | Laporte Industries Limited | Stabilized, high solids, low viscosity smectite slurries, and method of preparation |
DE10063635A1 (de) * | 1999-12-23 | 2001-06-28 | Inst Francais Du Petrole | Trioctaedrische 2:1 Phyllosilikate vom Stevensit-oder Kerolittyp, Herstellungsverfahren und Verwendung bei der Katalyse |
Non-Patent Citations (2)
Title |
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DATABASE WPI Week 199013, Derwent World Patents Index; AN 1990-095566, XP002403491 * |
DATABASE WPI Week 199414, Derwent World Patents Index; AN 1994-115673, XP002403492 * |
Also Published As
Publication number | Publication date |
---|---|
BRPI0614883A2 (pt) | 2011-04-19 |
CA2620089A1 (en) | 2007-03-01 |
DE102005039850A1 (de) | 2007-03-08 |
MX2008002390A (es) | 2008-03-18 |
JP2009506224A (ja) | 2009-02-12 |
ZA200802224B (en) | 2009-11-25 |
EP1920111A1 (de) | 2008-05-14 |
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