EP1092064B1 - Procede de fabrication de papier et carton et agents de retention et d'egouttage - Google Patents
Procede de fabrication de papier et carton et agents de retention et d'egouttage Download PDFInfo
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- EP1092064B1 EP1092064B1 EP99923647A EP99923647A EP1092064B1 EP 1092064 B1 EP1092064 B1 EP 1092064B1 EP 99923647 A EP99923647 A EP 99923647A EP 99923647 A EP99923647 A EP 99923647A EP 1092064 B1 EP1092064 B1 EP 1092064B1
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- Prior art keywords
- emulsion
- polymer
- branched
- process according
- 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.)
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Classifications
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- 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
- D21H23/06—Controlling the addition
- D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
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- 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
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- 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
- D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
- D21H23/765—Addition of all compounds to the pulp
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- 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
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
Definitions
- the present invention relates to the technical sector of manufacture of paper and polymers used in this context.
- the invention relates to a method for the production of a paper or a retention cardboard, and other properties, improved.
- EP-A-0 235 893 it has been proposed to use cationic polyacrylamides with a molecular weight greater than thirty million and more, essentially linear. In this way we obtain an effect certainly satisfactory, but still considered insufficient in the application paper, because the use of bentonite causes difficulties during the further treatment of the effluents at the output of the machine, the users select this system only in case of significant benefits.
- EP 0 574 335 has achieved an important improvement in proposing the use of polymers (in particular polyacrylamides) branched under the shape of a powder.
- the invention overcomes the disadvantages mentioned above.
- Branched polyacrylamide (or more generally (co) polymer branched) is introduced into the suspension, very preferably, under the water-in-oil inverse emulsion form, at the rate of 0.03 to one per thousand (0.03 to 1% o, ie 30 to 1000 g / t) by weight of active ingredient (polymer) per relative to the dry weight of the fibrous suspension, preferably from 0.15 to 0.5 per thousand, ie 150 to 500 g / t.
- the inverse emulsion of polymer is diluted with water and inverted (solubilized) by this dilution before its introduction, as described above.
- the polymer is prepared by water-in-oil inverse emulsion polymerization.
- this polymer can then be used (ie injected or introduced into the mass or paste to be flocculated) either in the form - preferably - of this emulsion inverse after its dissolution in water, either in the form of a powder obtained by drying (in particular by spray drying or spray-drying ")
- a powder obtained by drying in particular by spray drying or spray-drying
- redissolution of this powder in water for example at a concentration of about 5 g of active polymer / liter, the solution thus obtained being then injected into the dough substantially at the same polymer dosages.
- the branched (co) polyacrylamide is a cationic copolymer of acrylamide and a cationic ethylenic monomer unsaturated, selected from the group consisting of dimethylaminoethyl acrylate (ADAME), dimethylaminoethyl methacrylate (MADAME), quaternized or salified by different acids and quaternizing agents, benzyl chloride, methyl chloride, alkyl- or aryl chlorides, dimethylsulfate, chloride dimethyldiallylammonium (DADMAC), chloride acrylamidopropyltrimethylammonium (APTAC), and the chloride of methacrylamidopropyltrimethylammonium (MAPTAC),
- ADAME dimethylaminoethyl acrylate
- MADAME dimethylaminoethyl methacrylate
- benzyl chloride methyl chloride, alkyl- or aryl chlorides, dimethylsulfate
- this copolymer is branched by a branching constituted by a compound having at least two groups reactants selected from the group consisting of double bonds, aldehydes or epoxy bonds.
- branching constituted by a compound having at least two groups reactants selected from the group consisting of double bonds, aldehydes or epoxy bonds.
- a branched polymer is a polymer which present on the chain branches, groups or ramifications arranged globally in one plane and not in the three directions, unlike a cross-linked polymer; such polymers branched, high molecular weight, are well known as flocculating agents.
- These branched polyacrylamides are distinguished from crosslinked polyacrylamides by the fact that in the latter groups are arranged three-dimensionally to lead to practically insoluble products and of infinite molecular weight.
- Branching polymerization preferably during (or optionally after) the polymerization, for example by reaction of two soluble polymers having counterions, or by reaction on formaldehyde or a polyvalent metal compound. Often, the branching takes place during the polymerisation by addition of an agent ramifiantt, and this solution will be clearly preferred according to the invention.
- Branching polymerization methods are well known.
- Branching agents that can be incorporated include ionic branching agents such as polyvalent metal salts, formaldehyde, glyoxal, or, preferably, covalent crosslinking which will copolymerize with the monomers, diethylenically unsaturated monomers (such as family of diacrylate esters such as polyethylene diacrylates PEG glycols) or polyethylene, of the type that is conventionally used for the crosslinking of polymers soluble in water, and in particular the Methylenebisacrylamide (MBA) or any of the other known acrylic branching agents.
- ionic branching agents such as polyvalent metal salts, formaldehyde, glyoxal, or, preferably, covalent crosslinking which will copolymerize with the monomers, diethylenically unsaturated monomers (such as family of diacrylate esters such as polyethylene diacrylates PEG glycols) or polyethylene, of the type that is conventionally used for the crosslinking of polymers soluble in water, and in particular
- crosslinking agents are often identical to the crosslinking agents, but the crosslinking can be avoided, when one wishes to obtain a branched and not cross-linked polymer, by optimizing the conditions such as concentration during polymerisation, type and amount of transfer agent, temperature, type and amount of initiators, and like.
- the branching agent is methylenebisacrylamide (MBA), introduced at the rate of five to two hundred (5 to 200) moles per million moles of monomers, preferably 5 to 50.
- MBA methylenebisacrylamide
- the amount of branched polyacrylamide introduced into the suspension to flocculate is between thirty and thousand grams of active polymer / tonne of dry pulp (30 and 1000 g / t), ie between 0.03 per thousand and one per thousand, preferably 150 to 500 g / t; it has been observed that if amount is less than 0.03% o (0.03 per thousand), we do not get any significant retention; likewise, if this quantity exceeds 1% o (1 per thousand), no proportional improvement is observed; however, unlike linear cationic polyacrylamides, as described in documents EP-A-0 017 353 and EP 0 235 893 referred to in the preamble, does not observe an inverse effect of dispersion by recirculation in the circuits closed excess polymer not retained on the sheet.
- the amount of branched polyacrylamide introduced is between 0.15 and 0.5 per thousand (0.15% and 0.5%) of the quantity of the dry pulp, ie between 150 g / t and 500 g /
- the branched polymer is prepared under inverse emulsion form (water-in-oil) to achieve perfection of the invention.
- inverse emulsion form water-in-oil
- Such emulsions and their preparation process are well known to those skilled in the art.
- the invention was all the more difficult to realize that it is important to stay in the field of branched polymers and not to go into the crosslinked polymers. Now, we know that technically, especially scale of industrial production, the border between the two areas is very easily crossed, so irreversibly. As the zone of branching is very narrow, we measure the difficulty of developing the invention, and it is the Claimant's merit that he attacked the use of this technology in the field of paper making, which poses particular problems and has very stringent quality requirements.
- a “moderately branched" polymer for example at 10 ppm branching compared to the active ingredient.
- the polymer can be used either under the form of its inverse synthesis emulsion, dissolved or "inverted" in water, either in the form of the solution in the water of the powder obtained by drying said synthetic emulsion, in particular by drying by spray.
- Spray drying is a method also known of the skilled person. We will refer to the tests below to verify that the results are comparable.
- Bentonite also called “swelling smectic clay”, from the montmorillonite family, is well known and there is no need to describe it here in detail; these compounds, formed of microcrystallites, have on the surface sites with a high cation exchange capacity likely to retain water (see, for example, US-A-4,305,781, which corresponds to EP-A-0 017 353, mentioned above, and FR-A-2 283 102).
- a semi-sodium bentonite is preferably used, which is introduced just upstream of the headbox at 0.1 to 0.5 per cent (0.1 to 0.5%) of the dry weight of the fibrous suspension.
- filler we can use the kaolins, the "GCC” or ground CaCO3, precipitated CaCO3 or "PCC”, and the like.
- Injection or introduction of the branched polymer in emulsion inverse according to the invention is carried out before a shearing step in the pulp (or fibrous mass to flocculate) more or less diluted according to the practice of those skilled in the art, and generally in the thin stock or thin stock, ie a paste diluted 0.7 - 1.5% solids such as cellulose fibers, fillers possible, and the various usual additives of papermaking.
- a portion of the branched polymer emulsion, according to the invention at the stage of preparing the thick paste or "thick stock »at approx. 5% or more solids, or even at the level of the preparation of the thick paste before a shearing step.
- the UL viscosity results are as follows:
- the paste used is diluted to a consistency of 1.5%. 2.24 g is taken 150 g of 150% pulp and then diluted to 0.4% with clear waters.
- the crosslinked polymers 1, 4, 9, 12 are not of interest as regards the flocculation and retention of fines and fillers despite the high rate of shear applied during the process on the fibrous mass (and not not applied to the polymer itself), here 1500 rpm., which is characteristic of this type of microparticulate retention system. They show a low capture of charges and colloidal materials because no reduction in turbidity is observed.
- the coagulation power is higher for a branched polymer in emulsion, which results in an excellent reduction of turbidity at 30 '(30 min.).
- test R 52 and the test R 102 show that the invention allows to obtain branched products with higher UL viscosities than those accessible by a gel polymerization as described in patent EP 0 574 335 (FO 4198). Any attempt to achieve such very advantageous values of UL viscosity by a route of gel polymerization with powder drying would lead to a product totally insoluble and therefore totally unusable in the industry.
- the SD 102 test shows that the polymer used in the form of a solution in the water of the powder obtained by drying the the inverse emulsion of the polymer synthesis behaves like the polymer used in the form of the solution in the water of said reverse synthesis emulsion. In particular, we do not observe degradation of the polymer during the spray drying step.
- R 52 can be usefully compared to FO 4198 (powder) because polymers have the same chemistry, so the same cationicity, and the same% MBA, while the R 52 of the invention is much higher than the powder in terms of dewatering and retention (96.3 to bring closer to 83.6); NTU turbidity will also be compared after min. , of 32 compared to 75 NTU units.
- the invention thus also relates to a novel retention agent for the manufacture of a sheet of paper, cardboard or the like, which consists of a (co) acrylic polymer as described above, branched, in inverse emulsion, and which is characterized in that its UL viscosity is> 3, or> 3.5 or> 4.
- Said agent may be used either in inverted emulsion with water or in solution powder obtained by drying the emulsion, as described above.
- the contents of B are mixed in A with stirring. After mixing of the phases, the emulsion is sheared for 1 minute in order to create the inverse emulsion. The emulsion is then degassed by bubbling of nitrogen and then after 20 minutes, the gradual addition of metabisulphite entails the initiation then the polymerization.
- the emulsion is then incorporated with its reversing surfactant in order to subsequently release the polymer in the aqueous phase.
- the invention also relates to new retention agents described above, characterized in that they consist of, or include, the at least one (co) polymer of the type described, branched, prepared in inverse emulsion, intended to cooperate with a secondary retention agent after a step intermediate shearing of pulp, as well as the processes of manufacture of sheets of paper, cardboard or the like, using the agents according to the invention or the method according to the invention, and the sheets of paper, cardboard and analogs thus obtained.
- Said agent may be used either in inversion emulsion with water, or in solution of the powder obtained by drying the emulsion, as described above.
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Description
- l'augmentation de la production et la diminution des coûts de fabrication : économie énergétique, marche plus régulière de la machine, rendement plus élevé en fibres, fines, charges et de produits d'ennoblissement anioniques, plus faible acidité dans le circuit liée a une diminution de l'utilisation de sulfate d'alumine et donc amoindrissement des problèmes de corrosion ;
- l'amélioration de la qualité : meilleure formation et meilleur épair ; amélioration du taux d'humidité de la feuille, de l'opacité, du lisse, du pouvoir absorbant et diminution de la porosité du papier.
- 252 g d'Exxsol D100
- 18 g de Span 80
- 4 g d'Hypermer 2296
- 385 g d'acrylamide à 50 %
- 73 g de chlorure d'acrylate éthyl triméthyl ammonium 80 %
- 268 g d'eau
- 0,5 g de méthylène bis acrylamide à 0,25 %
- 0,75 ml du bromate de sodium à 50 g l-1
- 20 ppm d'hypophosphite de sodium par rapport à la matière active
- 0,29 ml de Versenex à 200 g l-1
La réaction terminée, on effectue un « burn out » (traitement au métabisulfite) afin de diminuer la teneur en monomère libre.
L'émulsion est alors incorporée avec son tensio-actif inverse afin de libérer par la suite le polymère en phase aqueuse. Il sera nécessaire d'introduire de 2 à 2,4 % d'alcool éthoxylé. La viscosité Brookfield standard dudit polymère sera de 4,36 cps (viscosité prise à 0,1 % dans une solution 1 M NaCl à 25°C à soixante tours par minute)
Essai | MBA ppm | NaH2PO2 ppm | UL[mPa·s] Viscosité | RI (%) | RIV (%) | Etat |
R 52 | 5 | 20 | 4,56 | 12,8 | 0 | Ramifié |
R 102 | 10 | 20 | 3,74 | 28,9 | 0 | Ramifié |
SD 102 | 10 | 20 | 3,70 | 26 | 0 | Ramifié |
X 104 | 10 | 40 | 2,31 | 45 | 50 | Réticulé |
X 204 | 20 | 40 | 2,61 | 54,8 | 50 | Réticulé |
EM 140 CT | 0 | 15 | 4,5 | 0 | < 0 | Linéaire |
EM 140 L | 0 | 30 | 3,82 | 0 | 0 | Linéaire |
EM 140 LH | 0 | 40 | 3,16 | 0 | < 0 | Linéaire |
EM 140 BD | 5 | 0 | 1,85 | 80 | 100 | Réticulé |
FO 4198 | 5 | 20 | 3,2 | 5 | < 0 | Ramifié |
- avec X :
- ionicité après cisaillement en meq/g.
- Y :
- ionicité avant cisaillement en meq/g.
- avec V1 :
- viscosité intrinsèque après cisaillement en dl/g
- V2 :
- viscosité intrinsèque avant cisaillement en dl/g
mélange de 70 % de kraft de feuillus blanchis | KF |
10 % de kraft de résineux blanchis | KR |
20 % de pâte mécanique | PM |
20 % de carbonate de calcium naturel. |
- t = 0 s, démarrage agitation à 1500 rpm.
- t = 10 s, addition du polymère.
- t = 60 s, réduction automatique à 1000 rpm et addition si nécessaire de la bentonite.
- t = 75 s, arrêt de l'agitation, formation de la feuille avec le vide sous toile puis récupération des eaux blanches.
- mesure de la turbidité des eaux sans toile.
- dilution d'un bêcher de pâte épaisse pour une nouvelle feuille avec les eaux sous toiles recueillies.
- séchage de la feuille dite 1 ère passe.
- démarrage d'une nouvelle séquence afin de réaliser la feuille dite 2nde passe.
- mesure des matières en suspension des eaux sous toile (Norme TAPPI : T 656 cm / 83 )
- mesure des cendres des feuilles, (Norme TAPPI : T 211 om - 93 )
- mesure de la turbidité 30' après que les fibres soient déposées afin de connaítre l'état du milieu ionique.
- mesure du degré d'égouttabilité de la pâte avec un Canadian Standard Freeness (CSF; Norme TAPPI T 227 om - 94).
- X =
- mesure dite à la première passe.
- R1 =
- mesure dite à la seconde passe (1 er recyclage)
- R2 =
- mesure dite à la troisième passe (2ème recyclage)
- 252 g d'exxsol D100
- 18 g de Span 80
- 4 g d'Hypermer 2296.
- 378 g d'acrylamide à 50 %
- 102,2 g de chlorure d'acrylamido-propyl triméthyl ammonium (60 %)
- 245,7 g d'eau
- 0,5 g de méthylène bis acrylamide à 0,25 %
- 0,75 ml de bromate de sodium à 50 g/l
- 20 ppm d'hypophosphite de sodium par rapport à la matière active
- 0,29 ml de Versenex à 200 g/l
Essai | MBA ppm | NaH2PO2 ppm (*) | UL Viscosité | RI (1) (%) | RIV (2) (%) | Etat |
M 52 | 5 | 20 | 4,20 | 14,2 | 0 | Ramifié |
M 102 | 10 | 20 | 3,34 | 21,3 | 0 | Ramifié |
XM 104 | 10 | 40 | 2,11 | 37 | 50 | Réticulé |
XM 204 | 20 | 40 | 1,94 | 58 | 55 | Réticulé |
EK 190 | 0 | 15 | 4,35 | 0 | 0 | Linéaire |
EK 190 BD | 5 | 0 | 1,85 | 78 | 60 | Réticulé |
EK 190 : émulsion standard de co-polymère acrylamide et chlorure d'acrylamido-propyl triméthyl ammonium, linéaire. |
Claims (20)
- Procédé pour la fabrication d'une feuille de papier ou carton ou analogues, présentant des caractéristiques améliorées de rétention et d'égouttage, du type selon lequel on utilise un système. dual de polymère acrylique ramifié et de bentonite ou un kaolin éventuellement traité comme agents primaire et secondaire, respectivement, de rétention, dont les introductions sont séparées par une étape de cisaillement de la suspension ou masse fibreuse ou pâte à papier, caractérisé en ce que ledit polymère est un (co)polymère acrylique ramifié et préparé sous la forme d'une émulsion inverse eau-dans-huile, utilisé soit en émulsion inversée à l'eau, soit en solution de la poudre obtenue par séchage de l'émulsion, et en ce que sa viscosité UL est > 3, de préférence > 3,5 et de préférence > 4.
- Procédé selon la revendication 1, caractérisé en ce que le (co)polymère acrylique ramifié préparé en émulsion inverse est introduit dans la pâte à papier à une concentration de 0,03 à un pour mille (0,03 a 1 %o) en poids, soit de 30 à 1000 g/t, du poids sec de la suspension fibreuse de pâte à papier, de préférence 0,15 à 0,5 pour mille (0,15 à 0,5 %o) soit de 150 à 500 g/t.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que le (co)polymère acrylique ramifié préparé en émulsion inverse est un copolymère cationique d'acrylamide et d'un monomère éthylénique cationique non saturé, choisi dans le groupe comprenant l'acrylate de dimethylaminoethyl. (ADAME), le methacrylate de dimethylaminoethyle (MADAME), quaternisés ou salifiés par différents acides et agents quaternisants, benzyle chlorure, méthyle chlorure, alkyl- ou aryle chlorures, diméthylsulfate, le chlorure de diméthyldiallylammonium (DADMAC), le chlorure d'acrylamidopropyltrimethylammonium (APTAC), et le chlorure de methacrylamidopropyltrimethylammonium (MAPTAC).
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le (co)polymère acrylique ramifié en émulsion inverse est ramifié par un agent de ramification constitue par un compose polyfonctionnel présentant au moins deux groupements réactifs choisis dans le groupe comprenant les doubles liaisons, les liaisons aldéhydes ou les liaisons epoxy.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le (co)polymère acrylique ramifié en émulsion inverse est ramifié par un agent de ramification constitue par le methylènebisacrylamide (MBA).
- Procédé selon la revendication 5, caractérisé en ce que le MBA est introduit à une concentration de 5 à 200 moles par million de moles de monomères.
- Procédé selon la revendication 5 ou 6, caractérisé en ce que la bentonite est une bentonite semi-sodique, utilisée à raison de 0,1 a 0,5 pour cent (0,1 a 0,5 %) du poids sec de la suspension fibreuse.
- Procédé selon la revendication 5, 6 ou 7, caractérisé en ce que la pâte utilisée, contenant la charge est diluée, puis on ajoute le polymère comme agent de rétention principal, on effectue une étape de cisaillement comme par exemple dans la pompe de mélange ou « fan pump » puis on ajoute la bentonite comme agent de rétention secondaire.
- Procédé selon la revendication 8, caractérisé en ce que la quantité de polyacrylamide ramifié (ou plus généralement de (co)polymère acrylique ramifié) introduit soit en émulsion inverse eau-dans-huile inversée à l'eau, soit en solution de la poudre obtenue par séchage de l'émulsion, est comprise entre 0,03 et 1 %o, soit entre trente et mille grammes/tonne (30 et 1000 g/t) de pâte sèche
- Procédé selon la revendication 8 ou 9 , caractérisé en ce que la quantité de polyacrylamide ramifié (ou plus généralement de (co)polymère acrylique ramifié) introduit soit en émulsion inverse eau-dans-huile inversée à l'eau, soit en solution de la poudre obtenue par séchage de l'émulsion, est comprise entre 0,15 et 0,5 %o (soit entre 150 et 500 g/t)
- Procédé selon la revendication 8 , 9 ou 10 , caractérisé en ce que la bentonite est remplacée par du kaolin, éventuellement prétraité par un polyelectrolyte, comme agent de rétention secondaire.
- Procédé selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'injection ou introduction du polymère ramifié préparé en émulsion inverse est effectuée (soit en émulsion inversée à l'eau, soit en solution de la poudre obtenue par séchage de l'émulsion) avant une étape de cisaillement dans la pâte à papier (ou masse fibreuse à flocculer) plus ou moins diluée selon la pratiqué de l'homme du métier, et généralement dans la pâte à papier diluée ou « thin stock », cad une pâte diluée à environ 0,7 - 1,5% de matières solides telles que fibres de cellulose, charges éventuelles,et les divers additifs usuels de la fabrication du papier.
- Procédé selon l'une quelconque des revendications 1 à 11, caractérisé en ce que on introduit une partie du polymère ramifié en émulsion au niveau de l'étape de préparation de la pâte épaisse ou « thick stock » à env. 5 % ou plus de matières solides, ou même au niveau de la préparation de la pâte épaisse avant une étape de cisaillement .
- Agent de rétention pour la fabrication d'une feuille de papier, carton ou analogue, caractérisé en ce qu'il comprend un polyacrylamide ramifié (ou plus généralement un (co)polymère acrylique ramifié) en émulsion inverse (ou eau-dans-huile) (soit en émulsion inverse dissoute ou « inversée » à l'eau, soit en solution de la poudre obtenue par séchage de l'émulsion inverse, notamment par séchage par pulvérisation), et en ce que sa viscosité UL est > 3.
- Agent de rétention pour la fabrication d'une feuille de papier, carton ou analogue, selon la revendication 14, caractérisé en ce que l'agent de ramification est un agent de ramification constitué par un composé polyfonctionnel présentant au moins deux groupements réactifs choisis dans le groupe comprenant les doubles liaisons, les liaisons aldéhydes ou les liaisons epoxy, notamment le méthylène bis acrylamide (MBA).
- Agent de rétention pour la fabrication d'une feuille de papier, carton ou analogue, selon la revendication 15, caractérisé en ce que l'agent de ramification est introduit a raison de cinq a deux cents (5 a 200) moles par million de moles de monomères, de préférence 5 à 50.
- Agent de rétention pour la fabrication d'une feuille de papier, carton ou analogue, selon la revendication 14, 15 ou 16, caractérisé en ce que le polyacrylamide ramifié est un copolymère cationique d'acrylamide et d'un monomère éthylénique cationique non saturé, choisi dans le groupe comprenant l'acrylate de dimethylaminoethyl (ADAME), le methacrylate de dimethylaminoethyle (MADAME), quaternisés ou salifiés par différents acides et agents quaternisants, benzyle chlorure, méthyle chlorure, alkyl- ou aryle chlorures, diméthylsulfate, le chlorure de diméthyldiallylammonium (DADMAC), le chlorure d'acrylamidopropyltrimethylammonium (APTAC), et le chlorure de methacrylamidopropyltrimethylammonium (MAPTAC).
- Agent de rétention pour la fabrication d'une feuille de papier, carton ou analogue, selon l'une quelconque des revendications 14 à 17, caractérisé en ce que sa viscosité UL est > 3,5.
- Agent de rétention pour la fabrication d'une feuille de papier, carton ou analogue, selon l'une quelconque des revendications 14 à 18, caractérisé en ce que sa viscosité UL est > 4.
- Agent de rétention pour la fabrication d'une feuille de papier, carton ou analogue, selon l'une quelconque des revendications 14 à 19, caractérisé en ce qu'il est « moyennement ramifié », par exemple à 10 ppm de ramifiant par rapport à la matière active.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9807144 | 1998-06-04 | ||
FR9807144A FR2779452B1 (fr) | 1998-06-04 | 1998-06-04 | Procede de fabrication de papier et carton et nouveaux agents de retention et d'egouttage correspondants, et papiers et cartons ainsi obtenus |
PCT/FR1999/001278 WO1999063159A1 (fr) | 1998-06-04 | 1999-06-01 | Procede de fabrication de papier et carton et agents de retention et d'egouttage |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1092064A1 EP1092064A1 (fr) | 2001-04-18 |
EP1092064B1 true EP1092064B1 (fr) | 2003-11-19 |
EP1092064B2 EP1092064B2 (fr) | 2009-04-22 |
EP1092064B9 EP1092064B9 (fr) | 2009-10-21 |
Family
ID=9527102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99923647A Expired - Lifetime EP1092064B9 (fr) | 1998-06-04 | 1999-06-01 | Procede de fabrication de papier et carton |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1092064B9 (fr) |
JP (1) | JP4699608B2 (fr) |
KR (1) | KR100685533B1 (fr) |
AT (1) | ATE254693T1 (fr) |
AU (1) | AU4043999A (fr) |
CA (1) | CA2334196C (fr) |
DE (1) | DE69912954T3 (fr) |
FR (1) | FR2779452B1 (fr) |
WO (1) | WO1999063159A1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2779752B1 (fr) * | 1998-06-12 | 2000-08-11 | Snf Sa | Procede de fabrication de papier et carton et nouveaux agents de retention correspondants, et papiers et cartons ainsi obtenus |
DE20220979U1 (de) | 2002-08-07 | 2004-10-14 | Basf Ag | Papierprodukt |
MXPA04003942A (es) * | 2003-05-05 | 2007-06-29 | German Vergara Lopez | Un sistema de retencion y drenaje recomendado para la fabricacion de papel, cartulina, carton y otros productos similares. |
FR2869626A3 (fr) * | 2004-04-29 | 2005-11-04 | Snf Sas Soc Par Actions Simpli | Procede de fabrication de papier et carton, nouveaux agents de retention et d'egouttage correspondants, et papiers et cartons ainsi obtenus |
DE102004044379B4 (de) | 2004-09-10 | 2008-01-10 | Basf Ag | Verfahren zur Herstellung von Papier, Pappe und Karton und Verwendung einer Retentionsmittelkombination |
DE102004063005A1 (de) | 2004-12-22 | 2006-07-13 | Basf Ag | Verfahren zur Herstellung von Papier, Pappe und Karton |
DE102008000811A1 (de) | 2007-03-29 | 2008-10-09 | Basf Se | Verfahren zur Herstellung von Papier |
ES2691384T3 (es) | 2008-09-02 | 2018-11-27 | Basf Se | Procedimiento para la fabricación de papel, cartón y cartulina usando endo-beta-1,4-glucanasas como agente de drenaje |
EP3199218B1 (fr) | 2009-09-15 | 2019-11-06 | Suncor Energy Inc. | Procédé de séchage de résidus fins des sables bitumineux |
CN102596351B (zh) | 2009-09-15 | 2015-07-29 | 顺科能源公司 | 对油砂熟化细尾矿进行絮凝和脱水的方法 |
WO2011050440A1 (fr) | 2009-10-30 | 2011-05-05 | Suncor Energy Inc. | Procédés de sédimentation et de traitement agricole pour le séchage de résidus fins mûrs de sables bitumineux |
US9404223B2 (en) * | 2012-02-01 | 2016-08-02 | Basf Se | Process for the manufacture of paper and paperboard |
GB2567456B (en) | 2017-10-12 | 2021-08-11 | Si Group Switzerland Chaa Gmbh | Antidegradant blend |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4617362A (en) * | 1984-12-31 | 1986-10-14 | Allied Corporation | Inverse emulsion polymers with improved incorporation of diallyldimethylammonium chloride |
EP0202780B2 (fr) † | 1985-04-25 | 1998-12-09 | Ciba Specialty Chemicals Water Treatments Limited | Procédés de floculation |
FR2589145A1 (fr) * | 1985-10-25 | 1987-04-30 | Snf Sa | Agent floculant pour le traitement des boues a base de polymeres d'addition hydrosolubles ramifies |
GB8602121D0 (en) † | 1986-01-29 | 1986-03-05 | Allied Colloids Ltd | Paper & paper board |
US5354481A (en) † | 1988-12-19 | 1994-10-11 | Cytec Technology Corp. | Water-soluble highly branched polymeric microparticles |
DE68921053T3 (de) * | 1988-12-19 | 2004-07-22 | Cytec Technology Corp., Wilmington | Hochleistungs-Polymer-Flokkuliermittel. |
US5405554A (en) † | 1990-02-08 | 1995-04-11 | Cytec Technology Corp. | High performance dewatering aids |
US5234548A (en) * | 1992-01-02 | 1993-08-10 | Vinings Industries Inc. | Production of paper and paperboard |
FR2692292B1 (fr) * | 1992-06-11 | 1994-12-02 | Snf Sa | Procédé de fabrication d'un papier ou d'un carton à rétention améliorée. |
GB9313956D0 (en) * | 1993-07-06 | 1993-08-18 | Allied Colloids Ltd | Production of paper |
GB9410920D0 (en) † | 1994-06-01 | 1994-07-20 | Allied Colloids Ltd | Manufacture of paper |
FR2740482B1 (fr) * | 1995-10-30 | 1997-11-21 | Snf Sa | Procede pour ameliorer la retention dans un procede de fabrication du papier, carton et analogue |
SE9504081D0 (sv) * | 1995-11-15 | 1995-11-15 | Eka Nobel Ab | A process for the production of paper |
JP3614609B2 (ja) * | 1996-09-10 | 2005-01-26 | ハイモ株式会社 | 製紙用薬剤、抄紙方法および製紙用薬剤の製造方法 |
-
1998
- 1998-06-04 FR FR9807144A patent/FR2779452B1/fr not_active Expired - Lifetime
-
1999
- 1999-06-01 AT AT99923647T patent/ATE254693T1/de active
- 1999-06-01 AU AU40439/99A patent/AU4043999A/en not_active Abandoned
- 1999-06-01 CA CA002334196A patent/CA2334196C/fr not_active Expired - Lifetime
- 1999-06-01 KR KR1020007013706A patent/KR100685533B1/ko not_active IP Right Cessation
- 1999-06-01 WO PCT/FR1999/001278 patent/WO1999063159A1/fr active IP Right Grant
- 1999-06-01 DE DE69912954T patent/DE69912954T3/de not_active Expired - Lifetime
- 1999-06-01 JP JP2000552347A patent/JP4699608B2/ja not_active Expired - Lifetime
- 1999-06-01 EP EP99923647A patent/EP1092064B9/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2779452A1 (fr) | 1999-12-10 |
JP2002517626A (ja) | 2002-06-18 |
KR20010052553A (ko) | 2001-06-25 |
EP1092064B9 (fr) | 2009-10-21 |
EP1092064A1 (fr) | 2001-04-18 |
ATE254693T1 (de) | 2003-12-15 |
JP4699608B2 (ja) | 2011-06-15 |
DE69912954D1 (de) | 2003-12-24 |
FR2779452B1 (fr) | 2000-08-11 |
CA2334196A1 (fr) | 1999-12-09 |
CA2334196C (fr) | 2008-07-15 |
EP1092064B2 (fr) | 2009-04-22 |
AU4043999A (en) | 1999-12-20 |
DE69912954T2 (de) | 2004-11-11 |
WO1999063159A1 (fr) | 1999-12-09 |
KR100685533B1 (ko) | 2007-02-22 |
DE69912954T3 (de) | 2010-01-28 |
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