EP1102894B1 - Utilisation d'amidons modifies en tant qu'agents de retention dans la fabrication de papier - Google Patents

Utilisation d'amidons modifies en tant qu'agents de retention dans la fabrication de papier Download PDF

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Publication number
EP1102894B1
EP1102894B1 EP99938266A EP99938266A EP1102894B1 EP 1102894 B1 EP1102894 B1 EP 1102894B1 EP 99938266 A EP99938266 A EP 99938266A EP 99938266 A EP99938266 A EP 99938266A EP 1102894 B1 EP1102894 B1 EP 1102894B1
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EP
European Patent Office
Prior art keywords
starch
use according
moieties
methacrylamide
paper
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.)
Expired - Lifetime
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EP99938266A
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German (de)
English (en)
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EP1102894A1 (fr
Inventor
Johann Schulte
Joachim Werres
Ulrich Fischer
Hans-Georg Hartan
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Stockhausen GmbH and Co KG
Original Assignee
Stockhausen GmbH and Co KG
Chemische Fabrik Stockhausen GmbH
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Publication of EP1102894A1 publication Critical patent/EP1102894A1/fr
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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
    • D21H21/06—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
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates

Definitions

  • the invention relates to the use of starch or starch derivatives with Modified polyelectrolytes based on dialkylaminoalkyl (meth) acrylamides and was digested in the presence of inorganic additives, as Retention agent for pigments, mineral fillers and fibrous fines at Papermaking.
  • Pigments and fillers are used as essential paper components in the Production of the pulp dispersion added and with the help of Retention aids bound in leaf formation.
  • drainage and the strength of the paper are e.g. B. after the Information in the weekly paper for paper manufacturing 5 (1991), pp. 149 to 154, cationic mass starches as colloidal auxiliaries to a large extent used, with the use of cationic starch ethers according to Ullmann, 4. Aufl., 1979, Vol. 17, p. 581, in particular the retention of pigments and Fine substances is improved.
  • high molecular weight polyelectrolytes are, for example, the copolymers of acrylamide and the esters of (meth) acrylic acid with di-C 1 -C 2 alkylamino-C 2 -C 6 alkyl alcohols or the copolymers of acrylamide and the amides of (meth) acrylic acid with di -C 1 -C 2 alkylamino-C 2 -C 6 alkylamines, each of which is present in protonated or quaternized form.
  • Retention agents based on such ⁇ , ⁇ -unsaturated N-substituted carboxamides are described in EP-A-0 038 573. Furthermore, cationic polyacrylamides are also described in US-A-4753710 and WO-A-91/07543 as retention aids.
  • WO-A-86/00100 a method for paper manufacture is known, in which for Improved retention added to the paper pulp colloidal binder be based on aluminum silicate modified on the surface Silicic acid and cationic or amphoteric carbohydrates, such as preferably Starch or amylo pectin are obtained.
  • pp 785 to 790 are as Retention agents continue to be known microparticle systems in which the Pulp dispersion initially with cationic starch or cationic Polyacrylamides pretreated, flocked and dispersed: and then pretreated sheet formation by silica microparticle systems or by adding bentonite or aluminum salts are flocked again.
  • the multi-stage procedure leads to improve retention values.
  • EP-B-0 227 465 describes a process for the production of paper described, in which the fibrous material and separately the mineral filler with a synthetic polyelectrolyte always the same charge and then the treated filler with a polymeric polyelectrolyte with opposite charge is treated.
  • US-A-5,126,014 is a multi-stage process for improving the Retention known, in which a pulp suspension before a possibly multi-stage shear treatment calcium carbonate as filler, cationic starch, a cationic coagulant and an anionic flocculant are added and after at least one shear treatment step bentonite or colloidal Silica is added
  • EP-A-0 803 512 a method for producing cationic starch is known, according to which the starch is dry at temperatures from 60 to 200 ° C for the duration to be roasted with cationic polymers from 10 minutes to 5 hours then to be used as a paper strengthening agent.
  • EP-B-0 282 761 WO-A-96/05373 and WO-A-96/13525 of starch with ionic, especially cationic polyelectrolytes.
  • cationic polymers are used for this Diallyldimethylammonium chloride, N-vinylamine or N-vinylimidazoline with native or Already digested potato starch is heated, while according to WO-A-96/05373 cationic polymers with preferably anionic starch and after WO-A-96/13525 preferably hydrolyzed, cationic polymers of N-vinylformamide, Polyethyleneimines or polyalkylamines with all types of starch be implemented.
  • These implementation products are just like strengths with Copolymers of (meth) acrylamide and dialkylaminoalkyl (meth) acrylamide were modified, only as a dry strength agent for papermaking recommended.
  • cationic starch which may have been siliconized, as a drainage aid and as a retention aid used in papermaking.
  • the object of the present invention was therefore without additional Process steps, d. H. without the sub-steps mentioned above, in the known Paper production, preferably using waste paper, the retention of To improve pigments, fillers and fines without the mechanical Strength of the paper is adversely affected.
  • modified starch by digesting starch, starch derivatives and / or their breakdown products in aqueous solution in the presence of at least one cationic polymer, built up from at least 20% by weight of polymerized di-alkylaminoalkyl (meth) acrylic acid amide units, those in protonated, preferably quaternized Form are present, and with the addition of at least one particulate, to one inorganic mineral based additive before or during the Digestion has been obtained as a retention agent for pigments, inorganic fillers and fines in papermaking.
  • at least one cationic polymer built up from at least 20% by weight of polymerized di-alkylaminoalkyl (meth) acrylic acid amide units, those in protonated, preferably quaternized Form are present, and with the addition of at least one particulate, to one inorganic mineral based additive before or during the Digestion has been obtained as a retention agent for pigments, inorganic fillers and fines in papermaking.
  • native starch such as potato starch, wheat starch, Cereal flour, corn starch, tapioca starch, sago starch and starch with increased Hydrolysis content, rice starch, pea starch and / or mixtures thereof
  • Starch degradation products especially dextrins or oxidized starches, such as Dialdehyde starch, starch derivatives, such as chemically modified starches, in particular anionic starches, such as carboxy starch and starch degraded by persulfate, anionic starch esters, such as.
  • anionic starch esters such as.
  • anionic starch esters such as.
  • anionic starch esters such as.
  • anionic starch esters such as.
  • B. starch phosphoric acid mono- or diester Starch acetates and starch citrates
  • anionic starch ethers such as. B.
  • Native starches such as potato starch, wheat starch, corn starch, Rice starch, pea starch and / or their mixtures and anionic starch and / or cationic N-containing starch ethers are used.
  • Cationic polymers used are homo- or copolymers of dialkylaminoalkyl (meth) acrylic acid amides which contain at least 20% by weight of polymerized units of amides of (meth) acrylic acid and / or acrylic acid and preferably di-C 1 -C 2 -alkylamino-C 2 -C 6 alkylamines contain, each in protonated or quaternized form.
  • Their production is specified, for example, in EP-A-0 013 416 or in EP-A-0 113 038, the corresponding disclosure of these publications being introduced as a reference.
  • Such polymerized units are preferably derived from protonated or quaternized N-dialkyl-substituted (meth) acrylic acid amides, such as, for example Dimethylaminoethyl acrylamide or methacrylamide, dimethylaminopropyl acrylamide or methacrylamide, diethylaminopropyl acrylamide or methacrylamide, Diethylaminoethyl acrylamide or methacrylamide, diethylaminomethyl acrylamide or methacrylamide and N ', N', dimethylamino-2,2-dimethylpropyl-acrylamide or methacrylamide or mixtures thereof with known quaternizing agents have been implemented.
  • suitable quaternizing agents are: Dimethyl sulfate, diethyl sulfate, methyl chloride, ethyl chloride, preferably dimethyl sulfate or methyl chloride in question.
  • the polyelectrolytes can still further units of monounsaturated monomers, such as. B. diallyldimethylammonium chloride.
  • Such copolymerized monomers can also be water-soluble, nonionic monomers, such as acrylamide, methacrylamide, NC 1 -C 2 alkylated (meth) acrylamides, N-vinylamide, vinylformamide, N-vinylacetamide, N-vinyl-N-methylacetamide, N-vinylpyrrolidone.
  • Suitable water-soluble monomers are also N-methylolacrylamide, N-methylol methacrylamide and with monohydric C 1 - to C 4 -alcohols partially or fully etherified N-methylol (meth) acryl-amides.
  • the copolymers can be used to a limited extent, preferably up to 10 % By weight, sparingly soluble and / or water-insoluble in water, simply ethylenic contain unsaturated monomers, such as (meth) acrylic acid alkyl esters and vinyl acetate, as far as the solubility of the copolymers is preserved in water.
  • unsaturated monomers such as (meth) acrylic acid alkyl esters and vinyl acetate
  • the polymers to be used according to the invention preferably have a molecular weight MG (g / mol) in the range from 1.0 ⁇ 10 5 to 40 ⁇ 10 6 , particularly preferably in the range from 2.0 ⁇ 10 6 to 15 ⁇ 10 6 and very particularly preferably from 5 x 10 6 to 15 x 10 6 .
  • the viscosity was determined using a 1% polymer solution in one 10% NaCl solution with a Brookfield RVT viscometer, spindle 1-3 / 10 Revolutions per minute at 20 ° C and resulted in> 10 mPas for use upcoming polymers.
  • particulate additives based on inorganic minerals can also consist of clay, preferably swellable, silica, preferably silica sol and / or polysilicates modified with aluminum, Polyorthosilicic acid or modified with aluminum Polyorthosilicic acid, bentonite, titanium dioxide or talc in question. Preferably these substances are present as microparticles or microgels. Is particularly preferred Bentonite, talc, titanium dioxide or silica sol used.
  • the starch component can be converted using the cationic homo- or Copolymers of preferably protonated or quaternized Dialkylaminoalkyl (meth) acrylic acid amides in aqueous dispersion discontinuously in a reaction vessel or in a continuous flow process, for example in the jet cooker under the influence of heat at temperatures of 70-130 ° C, preferably from 90 - 100 ° C, with the addition of the inorganic additive and if necessary, under pressure with the starch component digested.
  • the Reaction conditions and the appropriate equipment conditions correspond the information in the weekly paper for paper 4, 1991, pp. 127-130, its disclosure is introduced as a reference.
  • the aqueous dispersion of the modification used, not yet digested starch component preferably has a content of 0.5 to 20% by weight, preferably from 0.5 to 10% by weight and particularly preferably from 2.0 up to 10% by weight of the starch component.
  • the aqueous solution for modification polyelectrolyte used has a content of 0.1 to 2.0% by weight, preferably 0.1 to 0.5% by weight and particularly preferably 0.1 to 0.3% by weight cationic homo- or copolymers.
  • the weight ratio of Starch component to cationic polyelectrolyte lies in the modification Range from 4: 1 to 25: 1, preferably in the range from 10: 1 to 25: 1 and especially preferably in the range from 14: 1 to 20: 1.
  • the modified starch products together with the inorganic additives can, preferably in the form of an aqueous solution, as a retention agent in the Production of all types of paper and cardboard can be used.
  • this Fiber material can consist of up to 100% by weight of ground wood and / or waste paper, and therefore a high proportion of mineral fillers, pigments and fibrous fines.
  • the retention aid according to the invention becomes aqueous according to the invention Pulp dispersion in an amount of 0.1 to 10 wt.% Solid, preferably from 0.5 to 5% by weight and particularly preferably 1.0 to 3% by weight, based on the Dry matter or pulp, before the headbox of the paper machine, preferably added as an aqueous solution with stirring.
  • the addition is made to the aqueous dispersion, which already contains calcium carbonate, kaolin, Aluminum silicate and oxide hydrates, satin white, talc, gypsum, barite, calcium silicate and lithopone, diatomaceous earth and synthetic, organic fillers from the Recycled material may or may have been added.
  • the retention agent according to the invention is advantageously added to the Dispersion of material in the machine chest, before the vertical classifier and before or after Feed pump before sheet formation.
  • the retention agent according to the invention based on modified starch and inorganic additives will have an excellent retention of the fillers reached and an impairment of the strength values despite the increase in Filler and thus the ash content of the paper surprisingly avoided.
  • the total retention gives the relationship to the paper production amount of dry substance used to the remaining in the finished paper Amount of substance again. This is done by weighing the respective amounts of substance determinable.
  • the ash retention gives the ratio of the ash content to the Paper production used (dry) amount of substance to the ash content of the finished paper again. This is determined by determining each Ash content determined.
  • the retention of fines indicates the ratio of the fines content to the Paper production used (dry) amount of substance to the proportion of fines of the finished paper again.
  • the coarse fraction corresponds to the amount of fiber that is on the filter.
  • Fine fraction 100 - Coarse fraction in g 0.5 gx 0.01 (%)
  • Comparative Example 1 or Examples 1 to 4 Ash retention% by weight Total retention% by weight Burst pressure kPa mod. Starch without added minerals 93.3 89.1 95 mod. Starch 9.7 bentonite 0.3 95.3 90.7 104 mod. Strength 9.5 bentonite 0.5 95.2 92.1 106 mod. Starch 9.0 bentonite 1.0 97.6 96.7 92 mod. Starch 9.0 talc 1.0 95.3 94.0 -

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  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Claims (16)

  1. Utilisation d'amidon modifié obtenu par digestion d'amidon, de dérivés d'amidon et/ou de leurs produits de décomposition en solution aqueuse en présence d'au moins un polymère cationique constitué d'au moins 20 % en poids d'unités d'amide d'acide dialkylaminoalkyl(méth)acrylique polymérisées, effectuée en ajoutant avant ou pendant la digestion au moins un additif à base d'une substance minérale sous forme de particules, en tant qu'agent de rétention pour les pigments, les charges minérales et les fines dans la fabrication du papier.
  2. Utilisation selon la revendication 1, caractérisée en ce qu'en tant qu'unités d'amide d'acide dialkylaminoalkyl(meth)acrylique, l'on utilise les unités protonées ou quaternisées du dialkyl(C1-C2)aminoalkyl(C2-C6)(méth)acrylamide.
  3. Utilisation selon la revendication 1 ou 2, caractérisée en ce que les unités quaternisées de dialkyl(C1-C2)aminoalkyl(C2-C6)(méth)acrylamide sont des unités quaternisées de diméthylaminoéthyl-acrylamide ou -méthacrylamide, de diéthylaminopropyl-acrylamide ou -méthacrylamide, de diéthylaminoéthylacrylamide ou -méthacrylamide, de diéthylaminométhyl-acrylamide ou -méthacrylamide, de diméthylaminopropyl-acrylamide ou -méthacrylamide, de diméthylaminométhyl-acrylamide ou -méthacrylamide, de N,N-diméthylamino-2,2-diméthylpropyl-acrylamide ou -méthacrylamide ou de leurs mélanges.
  4. Utilisation selon la revendication 3, caractérisée en ce que les unités ont été transformées en composés quaternisés en utilisant du diméthylsulfate ou du chlorure de méthyle.
  5. Utilisation selon une ou plusieurs des revendications de 1 à 4, caractérisée en ce que les unités quaternisées d'amide d'acide dialkylaminoalkylacrylique sont des unités de triméthylammonium-propylacrylamide-chlorure.
  6. Utilisation selon une ou plusieurs des revendications de 1 à 5, caractérisée en ce que les polymères cationiques comportent d'autres unités polymérisées de monomères insaturés et solubles dans l'eau, de préférence d'amides α,β-insaturés, de N-vinyl-amides, de N-hydroxyalkylamides, qui sont éventuellement partiellement ou complètement éthérifiés, de N-vinylpyrrolidone et/ou de diallyldiméthylammonium chlorure.
  7. Utilisation selon la revendication 6, caractérisée en ce que les unités d'amide sont dérivées d'acrylamide ou de méthacrylamide, de préférence d'acrylamide.
  8. Utilisation selon une ou plusieurs des revendications de 1 à 7, caractérisée en ce que les polymères cationiques comportent jusqu'à 10 % en poids d'unités de monomères α,β-insaturés, peu solubles ou insolubles dans l'eau, de préférence d'alkylester d'acide (méth)acrylique ou de vinyle acétate.
  9. Utilisation selon une ou plusieurs des revendications de 1 à 8, caractérisée en ce que le polymère cationique a une masse molaire (g/mole) de 0,1 à 20 Millions.
  10. Utilisation selon une ou plusieurs des revendications de 1 à 9, caractérisée en ce qu'en tant qu'amidon l'on utilise de l'amidon natif, de préférence de l'amidon de pommes de terre, de farine de céréales, de l'amidon de blé, de l'amidon de maïs, de l'amidon de riz, de l'amidon de petits pois, et/ou leurs mélanges, de l'amidon anionique, de préférence du mono- ou diester d'acide phosphorique d'amidon, de l'éther d'amidon anionique, de préférence du carboxyméthyl-amidon, ou des dérivés cationiques de l'amidon, de préférence de l'éther d'amidon contenant du N.
  11. Utilisation selon une ou plusieurs des revendications de 1 à 10, caractérisée en ce que la digestion du composant d'amidon est réalisée en présence de microparticules ou de microgels d'au moins un additif à base d'une substance minérale, de préférence d'argile, de sol d'acide silicique, d'acide silicique éventuellement modifié avec de l'aluminium, de polysilicate ou d'acide polyorthosilicique éventuellement modifié avec de l'aluminium, de bentonite, de dioxyde de titane ou de talc.
  12. Utilisation selon une ou plusieurs des revendications de 1 à 11, caractérisée en ce que l'additif minéral est utilisé en des quantités allant de 0,1 à 15 % en poids, de préférence de 3 à 15 % en poids rapporté au composant d'amidon modifié.
  13. Utilisation selon une ou plusieurs des revendications de 1 à12, caractérisée en ce que le rapport de poids du composant d'amidon à l'homo- ou au copolymère cationique est compris entre 4 : 1 et 25 : 1, de préférence de 10 :1 à 25 : 1 et plus particulièrement de 14 :1 à 20 :1 au cours de la modification.
  14. Utilisation selon une ou plusieurs des revendications de 1 à 13, caractérisée en ce que la digestion du composant d'amidon s'effectue à des températures comprises entre 70 et 150° C, de préférence entre 90 et 100° C.
  15. Utilisation selon une ou plusieurs des revendications de 1 à 14, caractérisée en ce que l'agent de rétention est ajouté en une quantité comprise entre 0,1 et 10 % en poids, de préférence de 0,5 à 5 % en poids de substance solide rapporté à la masse de pâte à papier.
  16. Utilisation selon une ou plusieurs des revendications de 1 à 15, caractérisée en ce que l'on utilise des vieux papiers dans la fabrication du papier.
EP99938266A 1998-07-17 1999-07-15 Utilisation d'amidons modifies en tant qu'agents de retention dans la fabrication de papier Expired - Lifetime EP1102894B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19832241A DE19832241A1 (de) 1998-07-17 1998-07-17 Verwendung von modifizierten Stärkeprodukten als Retentionsmittel bei der Papierherstellung
DE19832241 1998-07-17
PCT/EP1999/005054 WO2000004229A1 (fr) 1998-07-17 1999-07-15 Utilisation d'amidons modifies en tant qu'agents de retention dans la fabrication de papier

Publications (2)

Publication Number Publication Date
EP1102894A1 EP1102894A1 (fr) 2001-05-30
EP1102894B1 true EP1102894B1 (fr) 2002-10-23

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EP99938266A Expired - Lifetime EP1102894B1 (fr) 1998-07-17 1999-07-15 Utilisation d'amidons modifies en tant qu'agents de retention dans la fabrication de papier

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EP (1) EP1102894B1 (fr)
JP (1) JP2002520510A (fr)
CN (1) CN1309737A (fr)
AT (1) ATE226663T1 (fr)
AU (1) AU5283599A (fr)
BR (1) BR9912832A (fr)
CA (1) CA2336660A1 (fr)
DE (2) DE19832241A1 (fr)
NO (1) NO20010286L (fr)
WO (1) WO2000004229A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1176254A1 (fr) † 2000-07-24 2002-01-30 The Dow Chemical Company Utilisation de dispersions d'amidon reticulé dans la fabrication du papier
DE10121418A1 (de) * 2001-05-02 2003-01-23 Stockhausen Chem Fab Gmbh Verfahren zur Herstellung von Faserformkörpern
JP4712322B2 (ja) * 2004-06-30 2011-06-29 日本製紙株式会社 印刷適性向上剤およびこれを塗布した紙
CN100572434C (zh) * 2007-06-05 2009-12-23 内江市春江纸业有限公司 一种改性淀粉组合物的制备方法
CN102852038A (zh) * 2012-09-24 2013-01-02 济南晨光纸业有限公司 一种提高彩色羊皮纸鲜艳度并有效防止掉色的方法
CN105964887A (zh) * 2016-06-22 2016-09-28 马鞍山市创诚铸造有限公司 一种以热塑性氧化淀粉改性动物胶作为粘接剂的高透气性型砂及其制备方法
CN107217528B (zh) * 2017-06-21 2018-06-29 合肥龙发包装有限公司 一种抗油脂食品包装纸
CN115818655B (zh) * 2022-11-01 2024-03-26 江西广源化工有限责任公司 一种片状滑石粉及其制备方法和在制备淋膜原纸中的应用

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097427A (en) * 1977-02-14 1978-06-27 Nalco Chemical Company Cationization of starch utilizing alkali metal hydroxide, cationic water-soluble polymer and oxidant for improved wet end strength
FR2396831A1 (fr) * 1977-07-04 1979-02-02 Scholten Honig Research Nv Perfectionnement aux charges minerales utilisees dans la fabrication du papier et du carton
SE432951B (sv) * 1980-05-28 1984-04-30 Eka Ab Pappersprodukt innehallande cellulosafibrer och ett bindemedelssystem som omfattar kolloidal kiselsyra och katjonisk sterkelse samt forfarande for framstellning av pappersprodukten
GB8602121D0 (en) * 1986-01-29 1986-03-05 Allied Colloids Ltd Paper & paper board
US5185206A (en) * 1988-09-16 1993-02-09 E. I. Du Pont De Nemours And Company Polysilicate microgels as retention/drainage aids in papermaking
SE8903752D0 (sv) * 1989-11-09 1989-11-09 Eka Nobel Ab Foerfarande foer framstaellning av papper
GB9123683D0 (en) * 1991-11-07 1992-01-02 Sandoz Ltd Improvements in or relating to organic compounds
DE4438708A1 (de) * 1994-10-29 1996-05-02 Basf Ag Verfahren zur kationischen Modifizierung von Stärke und Verwendung der kationisch modifizierten Stärke
JPH09291103A (ja) * 1996-04-25 1997-11-11 Sanwa Kosan Kk 製紙用澱粉
DE19701524A1 (de) * 1997-01-17 1998-07-23 Basf Ag Polymermodifizierte Stärke, Verfahren zu ihrer Herstellung und ihre Verwendung
DE19701523A1 (de) * 1997-01-17 1998-07-23 Basf Ag Polymermodifizierte anionische Stärke, Verfahren zu ihrer Herstellung und ihre Verwendung
US5859128A (en) * 1997-10-30 1999-01-12 E. I. Du Pont De Nemours And Company Modified cationic starch composition for removing particles from aqueous dispersions

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NO20010286D0 (no) 2001-01-17
DE19832241A1 (de) 2000-01-27
ATE226663T1 (de) 2002-11-15
WO2000004229A1 (fr) 2000-01-27
BR9912832A (pt) 2001-05-02
CA2336660A1 (fr) 2000-01-27
CN1309737A (zh) 2001-08-22
EP1102894A1 (fr) 2001-05-30
DE59903194D1 (de) 2002-11-28
AU5283599A (en) 2000-02-07
NO20010286L (no) 2001-01-17
JP2002520510A (ja) 2002-07-09

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