EP0831177B1 - Polymères hydrophiles en dispersion pour applications papetières - Google Patents

Polymères hydrophiles en dispersion pour applications papetières Download PDF

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Publication number
EP0831177B1
EP0831177B1 EP97116538A EP97116538A EP0831177B1 EP 0831177 B1 EP0831177 B1 EP 0831177B1 EP 97116538 A EP97116538 A EP 97116538A EP 97116538 A EP97116538 A EP 97116538A EP 0831177 B1 EP0831177 B1 EP 0831177B1
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EP
European Patent Office
Prior art keywords
polymer
dispersion
grams
dmaea
mcq
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Revoked
Application number
EP97116538A
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German (de)
English (en)
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EP0831177A3 (fr
EP0831177A2 (fr
Inventor
Jane B. Wong Shing
John R. Hurlock
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.)
ChampionX LLC
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Nalco Chemical Co
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Application filed by Nalco Chemical Co filed Critical Nalco Chemical Co
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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
    • 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
    • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
    • 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
    • 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
    • D21H17/33—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
    • D21H17/375—Poly(meth)acrylamide
    • 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
    • D21H17/45—Nitrogen-containing groups
    • D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
    • 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
    • D21H17/66—Salts, e.g. alums

Definitions

  • a coagulant/flocculant system added ahead of the paper machine.
  • a coagulant for instance a low molecular weight cationic synthetic polymer or a cationic starch which coagulant generally reduces the negative surface charges present on the particles in the furnish, particularly cellulosic fines and mineral fillers, and thereby agglomerates such particles.
  • the coagulant is followed by the addition of a flocculant.
  • the flocculant is generally a high molecular weight cationic or anionic synthetic polymer which bridges the particles and/or agglomerates, from one surface to another, binding the particles into large agglomerates.
  • the presence of such large agglomerates in the furnish increases retention.
  • the agglomerates are filtered out of the water onto the fiber web, where unagglomerated particles otherwise would to a great extent pass.
  • a flocculated agglomerate generally does not interfere with the drainage of the fiber mat to the extent that would occur if the furnish were gelled or contained an amount of gelatinous material, when such flocs are filtered by the fiber web the pores thereof are reduced, thus reducing drainage efficiency. Hence, the retention is increased at the expense of decreasing drainage.
  • EP 525 751 discloses the use of specific cationic polymer dispersions as a paper chemical in a papermaking process.
  • the polymerization of the above mentioned monomers may be carried out in the presence of either an organic high-molecular weight multivalent cation comprising a water-soluble polymer containing at least one monomer of formula (I) and/or poly diallyl dimethyl ammonium chloride (DADMAC).
  • an organic high-molecular weight multivalent cation comprising a water-soluble polymer containing at least one monomer of formula (I) and/or poly diallyl dimethyl ammonium chloride (DADMAC).
  • DADMAC poly diallyl dimethyl ammonium chloride
  • the invention comprises a papermaking process for improving retention and drainage comprising forming an aqueous cellulosic papermaking slurry and adding a hydrophilic dispersion polymer to the slurry. The slurry is then formed into a sheet and dried.
  • the DMAEA•MCQ/AcAm hydrophilic dispersion polymers show nearly equal activity with respect to retention and drainage as compared to the commercial standard latex cationic polymers.
  • the amount of dimethylaminoethyl acrylate methyl chloride quaternary present in the copolymer is from about 3 mole percent to about 20 mole percent.
  • the range of intrinsic viscosities for the hydrophilic dispersion polymers of the invention is preferably from about 11.9 to about 21.2 dl/g.
  • the dispersion polymer is added in an amount from about 0.2 to about 2.3 kg of active per 1000 kg of slurry solids (about 0.5 to about 5.0 pounds of active per ton of slurry solids).
  • the present process is believed applicable to all grades and types of paper products and further applicable for use on all types of pulps including chemical pulps, including sulfate and sulfite pulps from both hard and soft woods and acid pulps, thermomechanical pulps, mechanical pulps, recycle pulps and ground wood pulps.
  • pulps including chemical pulps, including sulfate and sulfite pulps from both hard and soft woods and acid pulps, thermomechanical pulps, mechanical pulps, recycle pulps and ground wood pulps.
  • such furnishes will have a pH of from about 3.0 to about 9.0.
  • the resulting dispersion had a Brookfieid viscosity of 1525 cps and contained 20% of a 97/3 copolymer of acrylamide and DMAEA ⁇ MCQ with an intrinsic viscosity of 12.1 dl/gm in 0.125 molar NaNO 3 .
  • the resulting dispersion had a Brookfield viscosity of 2825 cps and contained 20% of a 95/5 copolymer of acrylamide and DMAEA ⁇ MCQ with an intrinsic viscosity of 14.1 dl/gm in 0.125 molar NaNO 3 .
  • Example 3 Process for Synthesizing Dispersion Copolymers of Acrylamide and 10 mole % DMAEA ⁇ MCQ.
  • Example 4 Process for Synthesizing Dispersion Copolymers of Acrylamide and 20 mole % DMAEA ⁇ MCQ.
  • the resulting dispersion had a Brookfield viscosity of 1325 cps and contained 20% of an 80/20 copolymer of acrylamide and DMAEA•MCO with an intrinsic viscosity 13.7 dl/gm in 0.125 molar NaNO 3 .
  • IV measurements of polymer samples were carried out in 0.125 M NaNO 3 solution.
  • the procedure comprises: 1. Prepare a 1% dispersion product (0.2% polymer actives) solution by injecting 2 g of the dispersion polymer with a syringe into the vortex of 198 g of DI water. Continue stirring at 800 rpm for 30 minutes. 2. Prepare a 0.045% polymer actives working solution from: 0.2% Polymer actives solution 22.5 g Sodium acetate solution 1.0 g 0.25 Molar Sodium nitrate 50.0 g DI water 26.5 g 3. Fill 2 ml of 0.125 Molar sodium nitrate solution into a capillary viscometer. Measure the time t s . 4. Remove the sodium nitrate solution and clean the viscometer. Fill 2 ml of the 0.045% polymer actives solution into the viscometer. Measure the time t 1 .
  • the fourth furnish was a synthetic alkaline furnish which comprised 70 weight % fiber and 30 weight % filler, diluted to a consistency of approximately 0.5% with formulation water.
  • the formulation water contained 200 ppm calcium hardness (added as CaCl 2 ), 152 ppm magnesium hardness (added as MgSO 4 ) and 110 ppm bicarbonate alkalinity (added as NaHCO 3 ).
  • the Britt CF Dynamic Drainage jar was used for uniform mixing of polymer and furnish; the mixing speed of the Britt jar was 500 rpm.
  • the drainage tester simulates gravity drainage on a paper machine. The test procedures for drainage and retention are given below:
  • Drainage and turbidity data were obtained for dispersion and latex polymers using the test procedures described above. In these examples, a measure of retention is given by the percent reduction in the turbidity obtained with no polymer treatment (blank). Dosage curves of Drainage Improvement (%) and Turbidity Reduction (%) were determined for polymers tested. It is well known that the retention and drainage activities of polymers depend on several factors including the type of furnish to be treated. For this reason furnishes were selected which were significantly different from each other. The first was a 100% recycled linerboard furnish. The second was a furnish used for the production of corrugated folding grade products. This furnish was a mixture of old corrugated cardboard (OCC), newsprint and boxboard. Thick stocks and other additives used for the manufacture of publication grade paper were collected to prepare the third furnish. The fourth furnish was prepared in the laboratory and closely resembles the alkaline furnish used by the paper industry for the production of fine paper.
  • OCC old corrugated cardboard
  • Figure 2 shows the drainage improvements realized by the dispersion polymers described above.
  • the copolymer containing 5 mole % DMAEA ⁇ MCQ showed the best drainage behavior amongst the dispersions.
  • the latex polymer, Polymer A outperformed the dispersions for the entire dosage range tested. It should be noted that the intrinsic viscosities of the first batches of hydrophilic dispersions were significantly lower than Polymer A.
  • the corrugated coated furnish was a mixture of OCC, newsprint and boxboard. Unlike the recycled linerboard this furnish contained CaCO 3 as filler. The % ash was found by gravimetric measurement to be 7.3%. Preliminary activity testings were carried out with the lower IV (11.9 - 15.7 dl/g) polymer samples and the data indicated some important trends in polymer performances. Both retention and drainage performances of the dispersion polymers improved with increasing mole% of DMAEA•MCQ. Overall, the 10 mole% DMAEA ⁇ MCQ copolymer showed the best drainage and retention performances among the dispersions tested.
  • Figure 4 shows the drainage activities of the higher IV dispersion copolymers containing 10 and 20 mole% DMAEA•MCQ.
  • the results clearly demonstrate that for the dosage range 0 to 0.7 kg active/1000 kg (0 to 1.5 lbs active/t) the hydrophilic dispersion polymers were comparable to the standard flocculant, Polymer A.
  • the polymer dosage was increased to 1.8 kg active / 1000 kg (4.0 lbs active/t.)
  • the 20 mole% DMAEA•MCQ copolymers continued to show drainage behavior similar to Polymer A.
  • Figure 7 shows that the drainage activities of the latex and dispersion polymers were quite different.
  • the latex polymer Polymer A gave the best drainage performance. This was followed by the higher IV dispersion polymer. AT dosages above 0.45 kg/1000kg (1.0 lb/t), the drainage improvements for the two dispersion polymers were greater than Polymer D.
  • a synthetic alkaline furnish was prepared, containing approximately 30% CaCO 3 as filler and, therefore, had the highest filler loading among the furnishes prepared.
  • cationic starch was charged to the furnish in the amount of about 4.5 kg/1000 kg (10 lb/ton) of dry weight of slurry solids.
  • Figure 8 shows the dosage retention curves for two hydrophilic dispersions containing 10 mole% and 20 mole% DMAEA ⁇ MCQ (Dispersion E, G) compared to Polymer B and Polymer C.
  • Polymer B (IV 19.1 dl/g) is a higher molecular weight material than Polymer A (IV 17.7 dl/g).
  • the results indicate that the hydrophilic dispersion polymers containing 10 and 20 mole% DMAEA ⁇ MCQ are also very effective retention aids for fine paper application.
  • hydrophilic dispersion polymers are effective retention and drainage aids for a range of furnishes.
  • the activities of the new dispersion polymers in the single polymer program were comparable to or sometimes better than the inverse emulsion polymer, Polymer A

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  • Paper (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Claims (6)

  1. Utilisation d'un polymère à dispersion hydrophile résultant de la polymérisation de monomères comprenant :
    (i) un monomère cationique de formule (I)
    Figure imgb0004
     dans laquelle R1 est un H ou un CH3 ; chacun des R2 et R3 est un groupe alkyle possédant 1 à 2 atomes de carbone ; R4 est un H ou un groupe alkyle possédant 1 à 2 atomes de carbone ; A' est un atome d'oxygène ou NH ; B' est un groupe alkylène de 2 à 4 atomes de carbone ou un groupe hydroxypropylène ; et X- est un contre-ion anionique ; et
    (ii) un second monomère représenté par un méth(acrylamide) dans une solution aqueuse d'un sel anionique polyvalent pour augmenter la rétention et/ou l'égouttage dans un procédé de fabrication du papier comprenant les étapes consistant à:
    a) former une suspension pâteuse cellulosique en phase aqueuse ;
    b) ajouter une quantité effective dudit polymère à dispersion hydrophile à la suspension pâteuse ;
    c) égoutter la suspension pâteuse pour former une feuille ; et
    d) sécher la feuille ;
    à condition que le polymère à dispersion hydrophile ne soit pas utilisé pour le traitement de cassés de fabrication enrobés, recyclés.
  2. Utilisation selon la revendication 1 dans laquelle le polymère à dispersion hydrophile est un copolymère d'acrylate de diméthylaminoéthyle quaternisé avec du chlorure de méthyle et d'acrylamide et dans laquelle la quantité d'acrylate de diméthylaminoéthyle quaternisé avec du chlorure de méthyle présent dans le copolymère est située entre environ 2 % en mole et environ 20 % en mole.
  3. Utilisation selon la revendication 1 dans laquelle le polymère à dispersion est ajouté en une quantité située entre environ 0,4 et environ 0,9 kg (0,8 à environ 2,0 livres) de matière active par 1000 kg de matière sèche de la suspension pâteuse.
  4. Utilisation selon la revendication 1 dans laquelle le polymère à dispersion hydrophile possède une viscosité intrinsèque entre environ 11,9 et environ 21,2 décilitres par gramme.
  5. Utilisation selon la revendication 1 comprenant en outre l'étape consistant à ajouter un coagulant avant l'ajout du polymère à dispersion hydrophile, le coagulant étant sélectionné dans le groupe comprenant l'Epi/DMA et le chlorure d'ammonium de diallyldiméthyle polymérique.
  6. Utilisation selon la revendication 5 comprenant en outre l'étape consistant à ajouter une urée cationique à la composition de fabrication en une quantité d'environ 4,5 kg/1000 kg (10 livres/tonne) de poids sec de matière sèche de la suspension pâteuse.
EP97116538A 1996-09-24 1997-09-23 Polymères hydrophiles en dispersion pour applications papetières Revoked EP0831177B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71928396A 1996-09-24 1996-09-24
US719283 1996-09-24

Publications (3)

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EP0831177A2 EP0831177A2 (fr) 1998-03-25
EP0831177A3 EP0831177A3 (fr) 2000-01-05
EP0831177B1 true EP0831177B1 (fr) 2007-07-25

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EP97116538A Revoked EP0831177B1 (fr) 1996-09-24 1997-09-23 Polymères hydrophiles en dispersion pour applications papetières

Country Status (9)

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EP (1) EP0831177B1 (fr)
AU (1) AU3918297A (fr)
BR (1) BR9704862A (fr)
CA (1) CA2216242C (fr)
DE (1) DE69737945T2 (fr)
ES (1) ES2290960T3 (fr)
ID (1) ID18321A (fr)
MY (1) MY136998A (fr)
NO (1) NO324301B1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6310124B1 (en) 1996-10-03 2001-10-30 Cytec Technology, Corp. Aqueous dispersions
US6235205B1 (en) 1996-10-03 2001-05-22 Cytec Technology Corp. Aqueous dispersions
US6162328A (en) * 1997-09-30 2000-12-19 Hercules Incorporated Method for surface sizing paper with cellulose reactive and cellulose non-reactive sizes, and paper prepared thereby
US6262168B1 (en) 1998-03-11 2001-07-17 Cytec Technology Corp. Aqueous dispersions
US6036868A (en) * 1998-07-23 2000-03-14 Nalco Chemical Company Use of hydrophilic dispersion polymers for oily wastewater clarification
AU766846B2 (en) * 1999-01-15 2003-10-23 Nalco Chemical Company Papermaking process utilizing hydrophilic dispersion polymers of diallyldimethyl ammonium chloride and acrylamide as retention and drainage aids
DE10061483A1 (de) 2000-12-08 2002-06-13 Stockhausen Chem Fab Gmbh Verfahren zur Herstellung von Wasser-in-Wasser-Polymerdispersionen
US7091273B2 (en) 2002-05-07 2006-08-15 Akzo Nobel N.V. Process for preparing a polymer dispersion
US8299183B2 (en) 2004-12-28 2012-10-30 Akzo Nobel N.V. Polymer dispersion and process for preparing a polymer dispersion
CN116848191A (zh) * 2020-10-30 2023-10-03 凯米拉公司 稳定的阳离子聚丙烯酰胺分散体以及其在造纸中的用途
KR20230098269A (ko) * 2020-10-30 2023-07-03 케미라 오와이제이 안정한 양이온성 폴리아크릴아미드 분산액 및 제지에서의 이의 용도
DE102022114644A1 (de) 2022-06-10 2023-12-21 Solenis Technologies Cayman, L.P. Hochmolekulare polymerdispersionen mit metallfängern
DE102022114642A1 (de) 2022-06-10 2023-12-21 Solenis Technologies Cayman, L.P. Polymerdispersionen mit hohem molekulargewicht, hergestellt unter kontrollierten adiabatischen bedingungen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0821099A1 (fr) * 1996-07-22 1998-01-28 Nalco Chemical Company Utilisation de polymères de dispersion hydrophiliques pour le traitement de cassé revêtu

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327600A1 (de) * 1983-07-30 1985-02-14 Sandoz-Patent-GmbH, 7850 Lörrach Copolymerisat- und tensidhaltige praeparate, deren herstellung und verwendung
US4795531A (en) * 1987-09-22 1989-01-03 Nalco Chemical Company Method for dewatering paper
JP3113698B2 (ja) * 1991-06-01 2000-12-04 住友精化株式会社 水溶性カチオン系重合体の製造方法
JPH0532722A (ja) * 1991-07-30 1993-02-09 Hymo Corp カチオン性水溶性重合体分散液の製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0821099A1 (fr) * 1996-07-22 1998-01-28 Nalco Chemical Company Utilisation de polymères de dispersion hydrophiliques pour le traitement de cassé revêtu

Also Published As

Publication number Publication date
EP0831177A3 (fr) 2000-01-05
BR9704862A (pt) 1999-01-19
MX9707246A (es) 1998-08-30
DE69737945D1 (de) 2007-09-06
CA2216242A1 (fr) 1998-03-24
ID18321A (id) 1998-03-26
NO974381D0 (no) 1997-09-23
ES2290960T3 (es) 2008-02-16
NO974381L (no) 1998-03-25
CA2216242C (fr) 2006-03-14
DE69737945T2 (de) 2007-12-06
AU3918297A (en) 1998-03-26
MY136998A (en) 2008-12-31
NO324301B1 (no) 2007-09-17
EP0831177A2 (fr) 1998-03-25

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