EP1756363A1 - Utilisation de particules de carbonate de calcium dans la production de papier - Google Patents

Utilisation de particules de carbonate de calcium dans la production de papier

Info

Publication number
EP1756363A1
EP1756363A1 EP05733443A EP05733443A EP1756363A1 EP 1756363 A1 EP1756363 A1 EP 1756363A1 EP 05733443 A EP05733443 A EP 05733443A EP 05733443 A EP05733443 A EP 05733443A EP 1756363 A1 EP1756363 A1 EP 1756363A1
Authority
EP
European Patent Office
Prior art keywords
calcium carbonate
suspension
equal
fiber
cationic
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.)
Withdrawn
Application number
EP05733443A
Other languages
German (de)
English (en)
Inventor
Mike Ball
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay SA
Original Assignee
Solvay SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Solvay SA filed Critical Solvay SA
Priority to EP05733443A priority Critical patent/EP1756363A1/fr
Publication of EP1756363A1 publication Critical patent/EP1756363A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • D21H17/675—Oxides, hydroxides or carbonates
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D21H17/29—Starch cationic
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/31—Gums
    • D21H17/32—Guar or other polygalactomannan gum
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/56—Polyamines; Polyimines; Polyester-imides
    • 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
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • 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
    • D21H21/50—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 characterised by form
    • D21H21/52—Additives of definite length or shape
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added

Definitions

  • the present invention relates to the use of a calcium carbonate (CC) in papermaking. More specifically, it relates to the use of CC to improve the dewatering and retention properties of paper in papermaking.
  • the invention also leads to paper with improved optical properties and improved printability.
  • colloidal silica such as that associated with the various Compozil* systems, in the production of paper to obtain improved retention and dewatering.
  • colloidal silica is an expensive material and there is a need for an alternative cheaper material. It has been surprisingly discovered that colloidal silica can be replaced by ultrafine particles of calcium carbonate.
  • a dry calcium carbonate or a suspension of CC especially a suspension comprising ultrafine precipitated calcium carbonate (PCC) particles is utilized in the manner analogous to the previously employed colloidal silica.
  • PCC ultrafine precipitated calcium carbonate
  • These suspensions can provide a substantial improvement ofthe retention and dewatering in the production of paper.
  • the improvements in dewatering can, for example, allow the speed of the papermaking machine to be increased. Accordingly, the economics ofthe papermaking process can be substantially improved.
  • the obtained paper shows improved optical properties and an improved printability.
  • the invention then relates to a process for the production of paper, comprising the steps of :
  • step (b) introducing at least one suspension comprising ultrafine particles of calcium carbonate to the fiber-containing suspension, and (c) forming and dewatering the fiber-containing suspension resulting from step (b) wherein the ultrafine calcium carbonate particles have an average size lower than or equal to 200 nm.
  • the invention also relates to a method for improving the dewatering of a fiber-containing suspension containing cellulose fibers comprising the addition of a calcium carbonate suspension comprising ultrafine particles of calcium carbonate to a fiber-containing suspension containing cellulose fibers, wherein the ultrafine calcium carbonate particles have an average size lower than or equal to 200 ran,
  • the invention also relates to the use of a calcium carbonate suspension comprising ultrafine particles of calcium carbonate as a substitute for colloidal silica as a dewatering agent in the formation of paper from a fiber-containing suspension containing cellulose fibers, wherein the ultrafine calcium carbonate particles have an average size lower than or equal to 200 nm.
  • the particles of calcium carbonate according to the invention can be particles of natural or synthetic calcium carbonate.
  • Natural calcium carbonate can be processed by mechanically crushing and grading calcareous ore to obtain particles adjusted to the desired size and surface area.
  • Synthetic calcium carbonate is usually prepared by precipitation using various sources of calcium and carbonates ions.
  • Precipitated calcium carbonate (PCC) is preferred.
  • Particles of PCC may be manufactured by first preparing a calcium oxide
  • Precipitation of calcium carbonate can also be carried out by adding an alkali metal carbonate starting with lime water (caustification method) or by the addition of an alkali metal carbonate starting with solutions containing calcium chloride.
  • PCC particles obtained from the carbonation process are preferred.
  • the calcium carbonate can be substantially amorphous or substantially crystalline. Substantially amorphous or crystalline is understood to mean that more than 50 % by weight ofthe calcium carbonate is in the form of amorphous or crystalline material when analyzed by an X-ray diffraction technique. Substantially crystalline calcium carbonate is preferred. Crystalline calcium carbonate can consist of calcite or aragonite or a mixture of these two crystalline phases. The calcite phase is preferred. - J
  • the particles can be of any shape. They may have the form of needles, scalenohedrons, rhombohedrons, spheres, platelets or prisms. A rhombohedral shape, that can be reduced to pseudo-cubes or pseudo-spheres, is preferred.
  • the calcium carbonate particles according to the invention have usually a
  • the particles according to the invention have generally a BET specific surface area lower than or equal to 300 m 2 /g preferably lower than or equal to 250 m 2 /g, more preferably lower than or equal to 200 m 2 /g, still more preferably lower than or equal to 150 m 2 /g and in particular lower than or equal to 100 ⁇ T/g.
  • the skilled person is aware how to determine the BET specific surface area ofthe particles.
  • the BET specific surface area is measured according to the ISO 9277 norm.
  • the "ultrafine" calcium carbonate particles according to the invention have usually a mean elementary particle size (d p ) higher than or equal to 5 nm, preferably higher than or equal to 10 nm, more preferably higher than or equal to 10 nm , still more preferably higher than or equal to 15 nm and most preferably higher than or equal to 20 nm.
  • the mean particle size is generally lower than or equal to 200 nm, preferably lower than or equal to 150 nm, more preferably lower than or equal to 100 nm and most preferably lower than or equal to 70 nm.
  • the skilled person is aware of suitable methods for determining the mean elementary particle size.
  • the calcium carbonate particles according to the invention can be coated with at least one coating agent.
  • the coating agent is selected from carboxylic acids, carboxylic acids salts, sulfonic acids, sulfonic acid salts, alkylsulfates, alkylsulfosuccinates and mixtures thereof, to mention only a few. It is preferred to use uncoated calcium carbonate.
  • the PCC suspension according to the present invention can comprise ultrafine PCC particles such as those available from Solvay SA under the SOCAL* trademark. Specific examples of such ultrafine particles are illustrated in Table 1.
  • the ultrafine particles employed in the present invention typically have a high surface area and a high charge density which make them particularly suitable for use in the invention.
  • the primary function ofthe CC particles is the ability to provide a desired charge, e.g., typically a negative charge, thereby enhancing the charge characteristics of the system.
  • the ultrafine particles can be employed as a dry solid (powder) or in an organic or aqueous suspension in an amount suitable to provide the desired dewatering improvement.
  • dry solid one intends to denote a solid for which the water content can be less than or equal to 10 % by weight.
  • This content is preferably less than or equal to 3 % by weight and more particularly less than or equal to 1 % by weight. It is preferred to use aqueous suspensions of ultrafine particles of CC. It is most preferred to use aqueous suspensions of ultrafine particles of precipitated calcium carbonate. Those suspensions can be made by dispersing dry precipitated calcium carbonate into water or can be calcium carbonate suspensions resulting from the precipitation processes. In this regard, it may be desirable to provide as high as concentration ofthe particles as possible subject to issues such as the manufacturing conditions, the maximum concentration at which the suspension would remain fluid and pourable without excessive settling.
  • the content of ultrafine particles in the suspension of calcium carbonate is usually higher than or equal to 1 % by weight, preferably higher than or equal to 5 % by weight and most preferably higher than or equal to 8 % by weight.
  • the content of ultrafine particles in the suspension is usually lower than or equal to 70 % by weight, preferably lower than or equal to 50 % by weight, more preferably lower than or equal to 40 % by weight and most preferably lower than or equal to 20 % by weight.
  • One example of a suitable suspension includes about 10 % by weight ofthe ultrafine particles in an aqueous suspension.
  • the suspensions according to the present invention can be used as a replacement for colloidal silica in paper-making processes.
  • the present invention can employ a variety of paper-making suspensions containing a variety of cellulose-containing fibers.
  • the suspensions should typically contain a suitable amount of fibers to provide the desired consistency at the various points ofthe paper making process.
  • the consistency of the fiber in thick stock can typically be on the order of 3 %, of thin stock on the order of 0.5 to 1 % and later, at the drying section, at least about 50 percent by weight of such fibers, based on dry material. Such amounts are well recognized in this field.
  • the components can for example be used for suspensions of fibers from chemical pulp, such as sulphate and sulphite pulp, thermomechanical pulp, refiner pulp or groundwood pulp from both hardwood and softwood and can also be used for suspensions based on recycled fibers.
  • the suspension can also contain mineral fillers, such as for example kaolin, titanium dioxide, gypsum, chalk and talcum.
  • paper and paper-making as used herein do of course not include solely paper and its production but also other cellulose fiber containing products in sheet or web form such as pulp sheets, board and cardboard and their production.
  • the amount of calcium carbonate in the fiber containing suspension is to a high degree dependent on the type effects desired from this.
  • This amount is usually lower than or equal to 50 wt %, preferably lower than or equal to 40 wt %, more preferably lower than or equal to 30 wt % and most preferably lower than or equal to 20 wt %.
  • the calcium carbonate suspensions in the process, method and use according to the invention can be used in combination with agents employed in the paper-making suspension. Among such agents, ionic polymers are preferred.
  • the invention then also relates to process, a method and a use as described above, where at least one ionic polymer is introduced in the fiber-containing suspension containing cellulose fibers.
  • ionic polymers cationic polymers are preferred.
  • the cationic polymers suitable for use in the invention include natural, e.g. based on carbohydrates, and synthetic polymers. Examples of suitable polymers include cationic starch, cationic guar gum, cationic acrylamide based polymers, cationic polyethyleneimines, polyamidoamines and poly(diallyldimethyl ammonium chloride). The polymers can be used singly or in combination with each other.
  • Cationic starch is preferred and can be selected from starch tertiary aminoalkyl ethers derivatives, starch quaternary ammonium ethers derivatives, aminoethylated starches, starch cyanamide derivatives, starch anthranilates and cationic dialdehyde starch.
  • These cationic starches are produced by well-know reactions from starches arising from various sources like corn, potatoes, wheat and rice, for instance.
  • the amount of polymer is to a high degree dependent on the type of this and other effects desired from this. For synthetic polymers at least 0.01 kg polymer per ton, calculated as dry on the sum of dry fibers and optional fillers are usually used.
  • CC suspension CC suspension.
  • the amount of CC suspension employed in the context ofthe present invention can vary within wide limits depending on, among other things, the type of suspension being employed.
  • the weight ratio of cationic polymer(s) to CC is typically based on the charge characteristics ofthe system.
  • the other primary factor relates to the economics ofthe system. It is particularly suitable where the ratio of polymer to CC in suspension is not less than 0.10 wt/wt, more preferably not less than 0.20 wt/wt.
  • the paper-making suspensions employed in the present invention can include one or more conventional paper additives such as hydrophobing agents, dry strength agents, wet strength agents etc. Such additives are suitable for, but not significant to, the present invention.
  • suitable additive examples include aluminum compounds that can be employed in combination with the CC suspension and cationic polymers, since it has been found that aluminum compounds may provide a further improvement of retention and dewatering.
  • Any known aluminum compound for use in papermaking can be used, for example alum, polyaluminium compounds, aluminates, aluminum chloride and aluminum nitrate.
  • the polyaluminium compounds can for example be polyaluminium chlorides, polyaluminium sulphates and polyaluminium compounds containing both chloride and sulphate ions.
  • the polyaluminium compounds can also contain other anions than chloride - 1 -
  • ions for example anions from sulphuric acid, phosphoric acid, organic acids such as citric acid and oxalic acid.
  • ions for example anions from sulphuric acid, phosphoric acid, organic acids such as citric acid and oxalic acid.
  • the cationic polymer(s) are typically added prior to the CC suspension, processes employing a reversed order of addition are not outside the scope of this invention.
  • the process includes the forming and dewatering ofthe fiber-containing suspension on a wire to form paper.
  • techniques and devices for forming and dewatering the paper-making suspension are well-recognized in the art and need not be described in detail here. It is noted that the CC suspension can be effectively employed over the entire pH range of 4 to 10 in papermaking, with 4.5 to 8.5 being typically preferred.
  • Example - Comparison of Ultrafine PCC Suspension to Compozil® Components Colloidal silica : Compozil ⁇ BMA 0, anionic silica sol used directly as sold, 10 % by weight suspension.
  • Calcium carbonate SOCA1A U3 : A, 10 % by weight suspension of SOCAL ® U3 (SOLVAY).

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé pour produire du papier en introduisant une suspension de particules de carbonate de calcium ultrafines dans une suspension contenant des fibres. L'invention concerne également un procédé pour améliorer la déshydratation d'une suspension contenant des fibres, ainsi que l'utilisation d'une suspension de carbonate de calcium contenant des particules ultrafines de carbonate de calcium remplaçant la silice colloïdale comme agent de déshydratation pour la production de papier à partir d'une suspension contenant des fibres. Selon l'invention, au moins un polymère ionique est introduit dans la suspension contenant des fibres.
EP05733443A 2004-04-16 2005-04-14 Utilisation de particules de carbonate de calcium dans la production de papier Withdrawn EP1756363A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05733443A EP1756363A1 (fr) 2004-04-16 2005-04-14 Utilisation de particules de carbonate de calcium dans la production de papier

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04101574A EP1586704A1 (fr) 2004-04-16 2004-04-16 L'utilisation de particules ultrafine de carbonate de calcium pour la fabrication du papier
EP05733443A EP1756363A1 (fr) 2004-04-16 2005-04-14 Utilisation de particules de carbonate de calcium dans la production de papier
PCT/EP2005/051660 WO2005100690A1 (fr) 2004-04-16 2005-04-14 Utilisation de particules de carbonate de calcium dans la production de papier

Publications (1)

Publication Number Publication Date
EP1756363A1 true EP1756363A1 (fr) 2007-02-28

Family

ID=34928967

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04101574A Withdrawn EP1586704A1 (fr) 2004-04-16 2004-04-16 L'utilisation de particules ultrafine de carbonate de calcium pour la fabrication du papier
EP05733443A Withdrawn EP1756363A1 (fr) 2004-04-16 2005-04-14 Utilisation de particules de carbonate de calcium dans la production de papier

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04101574A Withdrawn EP1586704A1 (fr) 2004-04-16 2004-04-16 L'utilisation de particules ultrafine de carbonate de calcium pour la fabrication du papier

Country Status (2)

Country Link
EP (2) EP1586704A1 (fr)
WO (1) WO2005100690A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059736A1 (de) 2007-12-12 2009-06-18 Omya Development Ag Oberflächenmineralisierte organische Fasern
FI122304B (fi) 2010-04-22 2011-11-30 Nordkalk Oy Ab Happaman veden käyttö paperinvalmistuksessa
RU2483151C1 (ru) * 2011-11-10 2013-05-27 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Способ изготовления бумаги для печати
US8858759B1 (en) * 2013-07-10 2014-10-14 Ecolab Usa Inc. Enhancement of sheet dewatering using soy flour or soy protein

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793985A (en) * 1982-08-23 1988-12-27 J. M. Huber Corporation Method of producing ultrafine ground calcium carbonate
US5116418A (en) * 1984-12-03 1992-05-26 Industrial Progress Incorporated Process for making structural aggregate pigments
US5312484A (en) * 1989-10-12 1994-05-17 Industrial Progress, Inc. TiO2 -containing composite pigment products
US5279663A (en) * 1989-10-12 1994-01-18 Industrial Progesss, Inc. Low-refractive-index aggregate pigments products
US5269818A (en) * 1990-03-13 1993-12-14 Pfizer Inc Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof
JP3265113B2 (ja) * 1994-03-04 2002-03-11 三菱製紙株式会社 インクジェット記録シート
FR2777918B1 (fr) * 1998-04-27 2000-06-23 Rhodia Chimie Sa Procede de fabrication de papier utilisant un nouveau systeme de retention comprenant de la bentonite et un galactomanne cationique
EP1099795A1 (fr) * 1999-06-24 2001-05-16 Akzo Nobel N.V. Emulsion de collage
FR2818166B1 (fr) * 2000-12-20 2003-10-31 Coatex Sas Agent d'aide au broyage et/ou de dispersion de materiaux mineraux en suspension aqueuse. suspensions aqueuses obtenues et leurs utilisations

Non-Patent Citations (1)

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Title
See references of WO2005100690A1 *

Also Published As

Publication number Publication date
EP1586704A1 (fr) 2005-10-19
WO2005100690A1 (fr) 2005-10-27

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