WO2007067146A1 - Procede de production de carbonate de calcium precipite - Google Patents

Procede de production de carbonate de calcium precipite Download PDF

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Publication number
WO2007067146A1
WO2007067146A1 PCT/SE2006/050561 SE2006050561W WO2007067146A1 WO 2007067146 A1 WO2007067146 A1 WO 2007067146A1 SE 2006050561 W SE2006050561 W SE 2006050561W WO 2007067146 A1 WO2007067146 A1 WO 2007067146A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
starch
calcium carbonate
suspension
calcium hydroxide
Prior art date
Application number
PCT/SE2006/050561
Other languages
English (en)
Inventor
Philip HÅKANSSON
Original Assignee
Stora Enso Ab
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 Stora Enso Ab filed Critical Stora Enso Ab
Publication of WO2007067146A1 publication Critical patent/WO2007067146A1/fr
Priority to SE0701547A priority Critical patent/SE531630C2/sv
Priority to FI20080427A priority patent/FI123286B/fi

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/021—Calcium carbonates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates
    • C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
    • C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
    • 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
    • D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
    • 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
    • D21H17/25—Cellulose
    • D21H17/26—Ethers thereof
    • 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
    • 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

Definitions

  • the present invention relates to a method for producing a precipitated calcium carbonate for use as a filler in paper making production.
  • Other embodiments are related to a precipitated calcium carbonate, to a paper or paper board and to a method of producing a paper or paper board.
  • fillers are added to the furnish in order to improve optical and surface properties of the paper.
  • Increasing the filler content of paper can provide the papermaker with numerous benefits, including savings in the cost of raw materials and improved optical properties .
  • Calcium carbonate can for example be in the form of chalk, marble or precipitated calcium carbonate (PCC) .
  • PCC precipitated calcium carbonate
  • Precipitated calcium carbonate can be produced by calcining limestone (calcium carbonate) at high temperature to dry off C02, slaking the resulting lime (calcium oxide) by addition of water to form a lime suspension (calcium hydroxide) , and then treating the resulting lime suspension with C02 gas.
  • Efforts to reduce the dusting tendency of fine paper include the treatment of both sides of the paper with starch in the paper machine. This treatment, the so called surface sizing of the paper, is expensive and reduces the productivity of the paper machine.
  • One object of the present invention is to decrease the dusting tendency of paper or paper board.
  • Another object of the present invention is to allow for the paper maker to increase the filler content of the paper.
  • the present invention relates to a method of producing precipitated calcium carbonate (PCC) , for use as a filler in paper or paper board production, comprising the steps of providing a suspension of calcium hydroxide, carbonating said suspension of calcium hydroxide, wherein said step of carbonating said calcium hydroxide is performed in the presence of starch and/or carboxy methyl cellulose.
  • the step of carbonating said calcium hydroxide is preferably performed by bubbling a gas stream containing carbon dioxide into a slurry of calcium hydroxide. This can be performed at atmospheric pressure or at a pressure above atmospheric pressure.
  • the use of the precipitated calcium carbonate produced by the method of the invention as a filler in paper or paper board decreases the dusting tendency and increases the strength of the paper or paper board. Furthermore, the use of the inventive precipitated calcium carbonate enables the paper maker to increase the amount of precipitated calcium carbonate, and thus to increase the amount of fillers, in the paper or the paper board without substantially increase the dusting tendency or decrease the strength of the paper.
  • the affinity of the PCC particles formed by the method of the invention to the fibers is improved, since the starch and/or the cmc has a binding effect due to its sticky character.
  • the starch and/or the cmc is present at the carbonation of calcium hydroxide, i.e at the formation of the PCC particles, the starch and/or cmc is incorporated in the PCC particles whereby problems with the starch and/or the cmc being pealed off from the PCC
  • the calcium hydroxide solution can be provided by calcining limestone at a high temperature and slaking the resulting lime by addition of water. In this way, the carbon dioxide liberated by the burning of limestone can be used to carbonate the calcium hydroxide.
  • the step of carbonating said calcium hydroxide is preformed in the presence of starch.
  • the starch can be nonionic,
  • anionic, cationic, or amphoteric starch or a mixture of two or more of said starches.
  • the starch can be unmodified, oxidized, crosslinked, in the form of an ester or an ether or modified in any other way.
  • the starch can be based on any raw material, e.g. potato, maize, wheat, tapioca, rize, corn, waxy maize or waxy corn. Most preferably, the ratio between starch and the precipitated calcium carbonate (PCC) formed is within the interval of 1/100 and 25/100.
  • the step of carbonating the suspension of calcium hydroxide is performed in the presence of carboxy methyl cellulose.
  • carboxy methyl cellulose can be nonionic, anionic or cationic carboxy methyl cellulose or a mixture of two or more of said carboxy methyl celluloses.
  • the Carboxy methyl cellulose can be of any substitution grade or have any length of molecular chain.
  • the degree of substation of the starch and/or the cmc chosen depend on the wet-end chemistry, and especially on the retention agent system, of the paper machine that is used to produce the paper containing the PCC.
  • a cationic starch or carboxy methyl cellulose is preferably used when the z-potential in the headbox is sufficiently negative to prevent fibre flocculation, e.g. at z-potentials of -5 or less. However, if the z-potential is close to 0, e.g.
  • an anionic or cationic starch or carboxy methyl cellulose is preferably used.
  • the precipitated calcium carbonate of the invention is most preferably not produced in the presence of fibers, since fibers and fines can disturb the incorporation of the starch and/or the carboxy methyl cellulose in the PCC particles. Moreover, the production of precipitated calcium carbonate separated from the paper-making process, i.e. not in-situ during paper-making, makes it easier to control the process .
  • the method of producing precipitated calcium carbonate according to the invention is performed at normal reaction conditions with regard to temperature, pH and pressure etc., although other conditions are contemplated.
  • the starch and/or the CMC can be added to the reaction mixture in dry form, as solutions or as slurries.
  • the starch and/or the CMC is added to the lime suspension before the carbonation .
  • the suspension of calcium hydroxide comprises dissolved starch and/or carboxy methyl cellulose and is provided by continuously mixing said lime, water and the starch and/or the carboxy methyl.
  • lime, water and starch and/or CMC are continuously conducted to a reaction tank, whereafter the therein produced calcium hydroxide comprising starch and/or carboxy methyl cellulose is further conducted to the carbonating tank for carbonation.
  • the heat produced by the exothermic reaction when the calcium oxide reacts with water to form calcium hydroxide can be used to dissolve the starch and/or the CMC.
  • the starch and/or the CMC can be added in a dry form and do not have to be dissolved and/or digested in a separate step, whereby the process is simplified and the energy consumption is decreased.
  • the starch and/or the CMC is added to the lime (calcium oxide) prior to the addition of water and the formation of calcium hydroxide.
  • the heat produced by the exothermic reaction when the calcium oxide reacts with the water to form calcium hydroxide can be used to dissolve the starch and/or the CMC
  • the starch and/or the CMC is slurred in water to form a starch and/or CMC slurry, whereupon lime (calcium oxide) is added to said slurry.
  • the invention further relates to a precipitated calcium carbonate produced by the method of producing precipitated calcium carbonate as described above. Furthermore, the invention relates to a paper or paper board comprising said inventive precipitated calcium carbonate and to a method of producing paper or paper board comprising providing a fiber-containing suspension containing cellulose fibers, adding the precipitated calcium carbonate of the invention as a filler to said suspension and subsequently forming and dewatering the fiber containing suspension
  • the precipitated calcium carbonate can be added to the fiber containing suspension as a slurry at any stage of the paper making process prior to the head box including, but not limited to on the suction side of the machine chest pump, on the suction side of the fan pump or on the suction side of the mixing pump.
  • the inventive precipitated calcium carbonate can be added to the fiber containing suspension as a pure solution or slurry of precipitated calcium carbonate, or mixed with other additives or fillers.
  • the precipitated calcium carbonate produced by the method of the invention can for example be mixed with clay, talc, calcium sulfate hemihydrate, and/or calcium sulfate
  • the fiber containing suspension employed in the present invention can comprise any kind of pulp, including but not limited to chemical pulps, including sulfate and sulfite pulps from both hard and soft woods, thermo- mechanical pulps, mechanical pulps and ground wood pulps. Furthermore, the fiber containing suspension can include one or more conventional paper additives such as
  • hydrophobing agents dry strength agents, wet strength agents etc.
  • the precipitated calcium carbonate of the invention can be used as a filler in the production of any kind of paper or paper board.
  • the invention is of particular value in the production of fine paper, super-calendered paper or
  • the increase of filler in the newsprint paper, which the present invention makes possible, increases the ash content whereby the printing quality and the opacity of the paper is improved.
  • the amount of filler in the paper can be increased by at least 5%.
  • the content of precipitated calcium carbonate (PCC) produced according to the present invention in uncoated fine paper can be e.g. 25-35 % by weight based on dry paper.
  • the content of precipitated calcium carbonated (PCC) produced according to the present invention can be e.g. 10- 15%.
  • a sample of limestone is calcined in a rotating kiln at high temperature in order to dry off carbon dioxide.
  • the kiln temperature range is from an initial temperature of about 900 0 C to a final temperature of about 1000 0 C. These temperatures can vary dependent upon the nature of the limestone being calcined.
  • the lime is thereafter slaked in water to give a suspension of hydrated lime of a
  • Emfland Starke with a degree of substitution of 0.045 is added to 1 1 of the slurry of calcium hydroxide produced in step. I.
  • the slurry is stirred at an initial temperature of about 90 0 C for about 30 minutes.
  • the starch containing calcium hydroxide solution produced in step II is transferred to an atmospheric pressure reactor.
  • a gas stream containing carbon dioxide at about 10-20wt% by volume is bubbled into the reactor at a rate of about 1 L carbon dioxide per minute at atmospheric
  • the produced precipitated calcium carbonate is filtered whereby a PCC slurry of about 20w% is obtained.
  • the PCC slurry is added to a furnish of a mixture of 70% hardwood craft pulp and 30% softwood craft pulp in a pulp chest prior to being supplied to the head box of the paper machine.
  • the PCC is added to the furnish in an amount of about 28wt% of the thereof produced paper.
  • the furnish is thereafter applied to a wire and subsequently formed and dewatered in conventional manners.
  • the paper produced by the method is uncoated surface sized office paper.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Paper (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

La présente invention concerne un procédé de production de carbonate de calcium précipité (CCP) à utiliser comme charge dans la production de papier ou de carton, la carbonatation d'hydroxyde de calcium s'effectuant en présence d'amidon et/ou de carboxyméthylcellulose. Le carbonate de calcium précipité produit par le procédé de l'invention réduit la tendance au poussiérage et accroît la résistance du papier ou du carton lorsqu'il est utilisé comme charge. En outre, l'utilisation du carbonate de calcium précipité de l'invention permet au fabricant de papier d'augmenter la quantité de carbonate de calcium précipité, et ainsi d'augmenter la quantité de charges, dans le papier ou le carton. L'invention concerne également un carbonate de calcium précipité et un papier ou un carton qui comprend ledit carbonate de calcium précipité en tant que charge.
PCT/SE2006/050561 2005-12-07 2006-12-07 Procede de production de carbonate de calcium precipite WO2007067146A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0701547A SE531630C2 (sv) 2005-12-07 2007-06-27 Förfarande för framställning av utfällt kalciumkarbonat och papper innehållande utfällt kalciumkarbonat
FI20080427A FI123286B (fi) 2005-12-07 2008-07-03 Menetelmä saostetun kalsiumkarbonaatin valmistamiseksi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74829205P 2005-12-07 2005-12-07
US60/748,292 2005-12-07

Publications (1)

Publication Number Publication Date
WO2007067146A1 true WO2007067146A1 (fr) 2007-06-14

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Application Number Title Priority Date Filing Date
PCT/SE2006/050561 WO2007067146A1 (fr) 2005-12-07 2006-12-07 Procede de production de carbonate de calcium precipite

Country Status (2)

Country Link
FI (1) FI123286B (fr)
WO (1) WO2007067146A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013178881A1 (fr) * 2012-05-28 2013-12-05 Nordkalk Oy Ab Fabrication et utilisation d'une structure composite contenant du carbonate précipité
WO2014174155A1 (fr) 2013-04-26 2014-10-30 Wetend Technologies Oy Procédé pour alimenter une composition de fabrication d'une bande fibreuse en charge, et papier ou carton
WO2016079700A1 (fr) * 2014-11-19 2016-05-26 Stora Enso Oyj Procédé de production d'une charge
EP3061729A1 (fr) * 2015-02-27 2016-08-31 Omya International AG PCC à haute teneur en solides avec additif cationique
WO2016135421A1 (fr) 2015-02-27 2016-09-01 Coatex Production de carbonate de calcium precipite
EP3118161A1 (fr) 2015-07-17 2017-01-18 Omya International AG Pcc à haute teneur en solides à base de cellulose carboxylée dépolymérisée
FR3038895A1 (fr) * 2015-07-17 2017-01-20 Coatex Sas Production de carbonate de calcium precipite
EP3156369A1 (fr) 2015-10-16 2017-04-19 Omya International AG Pcc à haute teneur en solides avec additif copolymère

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188494A (en) * 1937-09-20 1940-01-30 Corn Prod Refining Co Filler and method of making same
US3443890A (en) * 1966-12-05 1969-05-13 Diamond Shamrock Corp Process for the production of calcium carbonate
EP0344984A2 (fr) * 1988-06-03 1989-12-06 Minerals Technologies Inc. Liant amidon cationique-carbonate de calcium précipité utilisé comme agent de rétention en papeterie
WO1995016003A1 (fr) * 1993-12-10 1995-06-15 Minerals Technologies, Inc. Traitement d'une matiere de charge inorganique pour papier avec des polysaccharides
WO1997001670A1 (fr) * 1995-06-29 1997-01-16 Metsä-Serla Oy Charge utilisable dans la fabrication du papier et procede pour produire cette charge
WO1997030220A1 (fr) * 1996-02-13 1997-08-21 Allied Colloids Limited Production de papier contenant une charge et composition destinee a cette fabrication
US6294143B1 (en) * 1998-03-24 2001-09-25 Minerals Technologies Inc. Process for the preparation of discrete particles of calcium carbonate
WO2002086238A1 (fr) * 2001-04-24 2002-10-31 M-Real Oyj Charge et son procede de production
US20050155520A1 (en) * 2003-12-22 2005-07-21 Van Der Horst Peter M. Filler for papermaking process

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188494A (en) * 1937-09-20 1940-01-30 Corn Prod Refining Co Filler and method of making same
US3443890A (en) * 1966-12-05 1969-05-13 Diamond Shamrock Corp Process for the production of calcium carbonate
EP0344984A2 (fr) * 1988-06-03 1989-12-06 Minerals Technologies Inc. Liant amidon cationique-carbonate de calcium précipité utilisé comme agent de rétention en papeterie
WO1995016003A1 (fr) * 1993-12-10 1995-06-15 Minerals Technologies, Inc. Traitement d'une matiere de charge inorganique pour papier avec des polysaccharides
WO1997001670A1 (fr) * 1995-06-29 1997-01-16 Metsä-Serla Oy Charge utilisable dans la fabrication du papier et procede pour produire cette charge
WO1997030220A1 (fr) * 1996-02-13 1997-08-21 Allied Colloids Limited Production de papier contenant une charge et composition destinee a cette fabrication
US6294143B1 (en) * 1998-03-24 2001-09-25 Minerals Technologies Inc. Process for the preparation of discrete particles of calcium carbonate
WO2002086238A1 (fr) * 2001-04-24 2002-10-31 M-Real Oyj Charge et son procede de production
US20050155520A1 (en) * 2003-12-22 2005-07-21 Van Der Horst Peter M. Filler for papermaking process

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE COMPENDEX [online] ZHAO YULIN ET AL.: "Improvement of paper properties using starch-modified precipiated calcium carbonate filler", XP003014354, Database accession no. (06079694428) *
TAPPI JOURNAL, vol. 4, no. 2, February 2005 (2005-02-01), pages 3 - 7 *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2606433C2 (ru) * 2012-05-28 2017-01-10 Нордкалк Ой Аб Изготовление и применение композитной структуры, содержащей осажденный карбонат
WO2013178881A1 (fr) * 2012-05-28 2013-12-05 Nordkalk Oy Ab Fabrication et utilisation d'une structure composite contenant du carbonate précipité
WO2014174155A1 (fr) 2013-04-26 2014-10-30 Wetend Technologies Oy Procédé pour alimenter une composition de fabrication d'une bande fibreuse en charge, et papier ou carton
WO2016079700A1 (fr) * 2014-11-19 2016-05-26 Stora Enso Oyj Procédé de production d'une charge
EP3221512A4 (fr) * 2014-11-19 2018-04-25 Stora Enso Oyj Procédé de production d'une charge
US11193241B2 (en) 2014-11-19 2021-12-07 Stora Enso Oyj Method of producing a filler
FR3033163A1 (fr) * 2015-02-27 2016-09-02 Coatex Sas Production de carbonate de calcium precipite
CN107257777A (zh) * 2015-02-27 2017-10-17 Omya国际股份公司 具有阳离子添加剂的高固体pcc
WO2016135059A1 (fr) * 2015-02-27 2016-09-01 Omya International Ag Pcc à teneur élevée contenant un additif cationique
CN107257777B (zh) * 2015-02-27 2019-12-17 Omya国际股份公司 具有阳离子添加剂的高固体pcc
US10501634B2 (en) 2015-02-27 2019-12-10 Omya International Ag High solids precipitated calcium carbonate with cationic additive
WO2016135421A1 (fr) 2015-02-27 2016-09-01 Coatex Production de carbonate de calcium precipite
EP3061729A1 (fr) * 2015-02-27 2016-08-31 Omya International AG PCC à haute teneur en solides avec additif cationique
JP2018507162A (ja) * 2015-02-27 2018-03-15 オムヤ インターナショナル アーゲー カチオン性添加剤を含む高固形分ｐｃｃ
CN107207272A (zh) * 2015-02-27 2017-09-26 可泰克斯公司 沉淀碳酸钙的制备
CN107848828A (zh) * 2015-07-17 2018-03-27 Omya国际股份公司 具有解聚羧化纤维素的高固体pcc
CN107787304A (zh) * 2015-07-17 2018-03-09 可泰克斯公司 沉淀碳酸钙的制备
WO2017013012A1 (fr) 2015-07-17 2017-01-26 Omya International Ag Pcc à forte teneur en fractions solides obtenu à l'aide d'une cellulose carboxylée dépolymérisée
RU2680067C1 (ru) * 2015-07-17 2019-02-14 Омиа Интернэшнл Аг Осажденный карбонат кальция, имеющий высокое содержание твердого вещества, с деполимеризованной карбоксилированной целлюлозой
WO2017013323A1 (fr) 2015-07-17 2017-01-26 Coatex Production de carbonate de calcium precipite
FR3038895A1 (fr) * 2015-07-17 2017-01-20 Coatex Sas Production de carbonate de calcium precipite
CN107848828B (zh) * 2015-07-17 2019-12-17 Omya国际股份公司 具有解聚羧化纤维素的高固体pcc
EP3118161A1 (fr) 2015-07-17 2017-01-18 Omya International AG Pcc à haute teneur en solides à base de cellulose carboxylée dépolymérisée
WO2017064175A1 (fr) 2015-10-16 2017-04-20 Omya International Ag Carbonate de calcium précipité riche en solides avec additif copolymère
EP3156369A1 (fr) 2015-10-16 2017-04-19 Omya International AG Pcc à haute teneur en solides avec additif copolymère
US10689519B2 (en) 2015-10-16 2020-06-23 Omya International Ag High solids precipitated calcium carbonate with copolymeric additive

Also Published As

Publication number Publication date
FI123286B (fi) 2013-01-31
FI20080427A (fi) 2008-07-03

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