EP0282415A1 - Verfahren zur Papierherstellung - Google Patents

Verfahren zur Papierherstellung Download PDF

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Publication number
EP0282415A1
EP0282415A1 EP88400568A EP88400568A EP0282415A1 EP 0282415 A1 EP0282415 A1 EP 0282415A1 EP 88400568 A EP88400568 A EP 88400568A EP 88400568 A EP88400568 A EP 88400568A EP 0282415 A1 EP0282415 A1 EP 0282415A1
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EP
European Patent Office
Prior art keywords
starch
cationic
anionic
starches
manufacturing paper
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Granted
Application number
EP88400568A
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English (en)
French (fr)
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EP0282415B1 (de
EP0282415B2 (de
Inventor
Serge Gosset
Pierre Lefer
Guy Fleche
Jean Schneider
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.)
Roquette Freres SA
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Roquette Freres SA
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Application filed by Roquette Freres SA filed Critical Roquette Freres SA
Priority to AT88400568T priority Critical patent/ATE63343T1/de
Publication of EP0282415A1 publication Critical patent/EP0282415A1/de
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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
    • 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

Definitions

  • the subject of the invention is a process for manufacturing paper, the term "paper” designating in the following any flat structure or sheet not only based on cellulose fibers - the raw material most frequently used in the paper industry and cardboard-- but also based - synthetic fibers such as polyamide, polyester and polyacrylic resin fibers, - mineral fibers such as asbestos, ceramic and glass fibers, - all combinations of cellulosic, synthetic and mineral fibers.
  • paper designating in the following any flat structure or sheet not only based on cellulose fibers - the raw material most frequently used in the paper industry and cardboard-- but also based - synthetic fibers such as polyamide, polyester and polyacrylic resin fibers, - mineral fibers such as asbestos, ceramic and glass fibers, - all combinations of cellulosic, synthetic and mineral fibers.
  • starches characterized by an increasingly high cationicity, but obviously limited by the maximum cationicity that can achieve conventional methods of obtaining cationic starches. And, in any case, whatever the degree of cationicity, the closing of the circuits and the degradation of the quality of the fibers results in an inevitable drop in the resistance of the papers.
  • patent EP 60,291 describes the preparation of a gel based on cationic starch and carboxymethylcellulose or on a uronic acid polymer, this gel being partially dehydrated by the action of a colloidal solution of acid. polysilicon or an oxypolyaluminum compound.
  • Dual techniques lead to an improvement in retention, thus making it possible to manufacture paper with a higher content of fillers. They allow a substantial saving of cellulose, but are not applicable in all cases. In addition, the amount of starch attached to the cellulose at the time of the formation of the sheet remains still limited, the physical characteristics of the paper thus obtained are not always improved sufficiently.
  • the object of the invention is therefore, above all, to provide a process for the production of paper which responds better than those which already exist to the various wishes of the practice.
  • the Applicant Company has found, after in-depth research, that it becomes possible, in particular under conditions deemed to be difficult, to increase significantly, that is to say by at least 30%, or even 50% or even more than 100%, the limit threshold for fixing the starch in the fibrous composition when a starch is introduced into the mass of fibers, in particular in the wet part, separately from each other cationic and an anionic starch other than starch phosphate.
  • limit threshold for fixing starch in the fibrous composition denotes the amount of starch fixed per unit weight of dry fibrous composition, the latter comprising all of the insoluble constituents used to form the sheet paper.
  • the process for manufacturing paper according to the invention is characterized in that one introduces into the fibrous composition constituting the raw material, at two or more points, in particular in the wet part, separately one on the other, one (or more) cationic starch (s) and one (or more) anionic starch (s) other than starch phosphate.
  • the anionic starch other than a starch phosphate is chosen from the group comprising starch phosphonates, carboxyalkyl starches and, preferably, starch sulphates, starches sulfoalkylated and sulfocarboxyalkylated.
  • the expression “anionic starch” designates all products of this type with the exception of starch phosphates.
  • the fibrous composition constituting the raw material intended for papermaking, an amount of 0.2% to 5% of cationic starch and an amount of 0.2 to 5% anionic starch.
  • the amounts of cationic and anionic starch are between 0.4% and 3%, more preferably between 0.7% and 2.5%, the percentages being expressed as dry starch relative to the dry fibrous composition.
  • the cationic and anionic starches are advantageously introduced into the fibrous composition in the form of a dilute aqueous glue with a concentration of less than 5%, preferably less than 3% and, more preferably, less than 1%, the lower limit being 0.01%. .
  • the preparation of adhesives (if the starch used is not directly soluble in cold water, in which case a simple dispersion in water is sufficient) is carried out in a manner known per se, by discontinuous or continuous cooking, for example in a continuous pressure cooker capable of ensuring the dosing, cooking and dilution operations.
  • anionic or cationic starches directly soluble in cold water and to introduce them, in powder form , directly in the fibrous suspension.
  • the proportion of cationic starch relative to the anionic starch must be between 10/1 and 1/10, preferably between 5/1 and 1/3 and, more preferably still, between 3/1 and 1/2, these ratios being expressed in dry weight of starch.
  • the point of introduction of the cationic and anionic starches is defined according to the physicochemical characteristics of the system, this choice resulting in different values of the contact time with the fibrous composition.
  • optimum concentrations of cationic starch and anionic starch used in accordance with the invention are determined within the limits indicated, depending in particular on the mass of fibers used, and the aqueous medium used (ionic environment) or the characteristics specific to each paper machine.
  • cationic starches used in accordance with the invention are selected from those having an acceptor electronic state, obtained using substituent groups of an electropositive nature, called cationic.
  • substituents are those containing a tertiary or quaternary nitrogen atom, although phosphonium and sulfonium groups can also be used.
  • halohydrins or epoxides corresponding to the following formulas can be used: in which - A represents the groups: - X representing in the above formulas a halogen atom, such as for example chlorine, - R1 and R2 each represent, independently of one another, a straight-chain or branched C1-C alk alkyl radical or else are combined in a cyclic structure, - R3 represents a straight-chain or branched C1-C4 alkyl radical and n represents an integer from 1 to 3.
  • - A represents the groups: - X representing in the above formulas a halogen atom, such as for example chlorine, - R1 and R2 each represent, independently of one another, a straight-chain or branched C1-C alk alkyl radical or else are combined in a cyclic structure, - R3 represents a straight-chain or branched C1-C4 alkyl radical and n represents an integer from 1 to 3.
  • the cationization reagents used are preferably: - diethylamino chloroethane, - epoxypropyl trimethylammonium chloride, - trimethylammonium chloride chloro-1-hydroxy-2-propane.
  • the electrophilic power of these starches is quantified by measuring the degree of substitution (DS), that is to say the number of hydroxyl functions which have been substituted by elementary glucoside unit.
  • DS degree of substitution
  • the DS is at most equal to 0.3; it is preferably between 0.02 and 0.20 and, more preferably, between 0.04 and 0.15.
  • the anionic substituents are introduced into the starch molecule using functional reagents, preferably: - in the case of starch phosphonates, diethylphosphonic acid aminochlorethane.
  • the maximum value that the DS can reach is equal to 3. However, as a general rule, we will retain, for the anionic products targeted by the invention, a DS at most equal to 1.5 and, preferably, at most equal to 0.5.
  • the binding reactions on the starch of these cationic or anionic groups were carried out and described with starches from all sources such as those of corn, rice, wheat, potato, cassava and others. They can, according to an advantageous embodiment of the invention, be carried out on starches having previously undergone a more or less extensive crosslinking treatment. This treatment gives the anionic or cationic starches thus obtained particular properties resulting in greater freedom as to the choice of their point of introduction during their implementation in the context of the invention.
  • the Applicant Company was able to observe, at the level of the anionic starches and the cationic starches used, differences in behavior more or less visible, depending in particular on the cellulose pulps and aqueous media. used.
  • cationic potato starch It is generally the cationic potato starch which is recognized as providing the best performance. Particular preference is given to anionic starches belonging to the group of sulfocarboxyalkyl derivatives.
  • the remarkable colloidal properties of the starches used in accordance with the invention have important repercussions on the manufacture of paper, making it possible for example to improve the retention of cellulose fines and of fillers during the preparation of the sheet and the speed of dripping water through the sheet.
  • flocculating agents traditionally used in stationery such as, for example, alumina sulfate, polychoride of Al , polyethyleneimine, polyacrylamide and others.
  • the installation in question comprises a vat 1 inside which is prepared the composition comprising a mass of fibers which is suspended and homogenized using an agitator 2. Agitation is maintained. throughout the duration of the test so as to ensure perfect regularity of supply to the circuit. It is however low enough not to modify over time the state of refining of the fibrous composition studied and not to degrade the flocs.
  • the fibrous composition is conveyed by a pipe 3 equipped with a P1 pump in a transit vat 4 provided with an agitator 5 and in which it can be maintained for a predetermined time to allow contact with one or more adjuvants used at this stage; it is also possible not to plan any stay in the vat room 4; in this case, the fibrous composition simply crosses the vat and is brought by a pipe 6 directly to a pump P2 located at the outlet of the vat 4.
  • the fibrous composition will be drawn from the vat 1 with a rigorously constant flow.
  • the pipe 3 Downstream of the pump P1, the pipe 3 is equipped with an enclosure 7 inside which it is possible to adjust the pH of the fiber suspension by adding alkali or acid; and downstream of the enclosure 7, the pipe 3 comprises an element schematically shown at 8 and suitable for allowing the introduction of one or more adjuvants into the fibrous composition.
  • the pump P2 conveys the suspension of fibers by a line 9 to two mixers in series respectively M1 and M2 equipped with agitators respectively 10 and 11; the adjustment of the rotational speeds and the shape of the blades of the agitators 10 and 11 are chosen so that the conditions prevailing inside the mixers are as close as possible to the shear conditions existing in the wet part of an industrial circuit paper making.
  • Three elements schematically shown in 12, 13 and 14 and adapted to allow the introduction of adjuvants in the fibrous composition are arranged on the line 9 at the outlet of the pump P2 for the first and respectively before the inlet of the mixers M1 and M2 for the other two; these elements make it possible to choose the order of introduction, the shearing conditions before or after addition and the contact times between the adjuvants and the fibrous composition.
  • the canvas water recovered in enclosure 17 is - for a part, rejected in the sewer by a line 18, - for another part, recycled by a pipe 19 fitted with a pump P3 to the pipe 9 at a point 20 located between the elements 12 and 13.
  • the enclosure 17 is connected, moreover, to a secondary circuit making it possible to bring a third part of the water under canvas contained in the said enclosure to a tubidimeter 22 at the outlet of which the water under canvas which have passed through it are brought back to enclosure 17 by a pipe 23.
  • the turbidimeter 22 makes it possible to assess the content of water under canvas in mineral and organic materials (fibers, fillers and others); it turns out that the measurements carried out continuously using this device are in direct relation to the retention and more or less proportional to the amount of soluble and insoluble matter present in the water under canvas.
  • a photometer which can be that known under the brand NANOCOLOR 50D (manufactured by the Company Macherey-Nagel, 5160-Duren, RFA, and marketed by the Company Techmation, 20 Quai de la Marne, 75019 Paris), and which allows measurements to be made reflecting the overall level of starch fixation; the principle of these measurements is based on the expression of the difference between the measurement carried out on a supernatant stripped of a few minutes of rest of the cellulose fibers and of the fillers, and colored with iodine, and that carried out on the same non-colored supernatant .
  • a pulp of the so-called “acid medium” type was prepared from cellulosic fibers using the following main constituents: - 35% soda ash - long fibers, - 35% soda ash - short fibers, - 15% of "coated broken” (that is to say recycled pasta) loaded with calcium carbonate, - 15% of "coated broken” loaded with kaolin.
  • the fibrous composition or paste thus prepared had the following characteristics: - concentration of the paste before introduction of the fillers (kaolin and alumina sulfate): 8 g / kg, - concentration of loaded dough: 10.6 g / kg - pH 4.7 (in vats) - resistivity: 623 ⁇ -cm - acidity: 140 mg / l (counted as sulfuric acid).
  • the acidity was measured by simple assay from an N / 10 sodium solution with phenolphthalein as a colored indicator.
  • cationic starch By way of cationic starch, a cationic potato starch was used having a nitrogen content fixed on dry comprised between 0.55 and 0.60% (which corresponds to a DS comprised between 0.063 and 0.069); in this case, it is that marketed by the Applicant Company under the brand HI-CAT® 180.
  • this cationic starch was dissolved on a continuous cooking appliance, under the following conditions: - milk with 10% commercial matter - temperature: 120 ° C, under sufficient pressure for cooking to take place in the liquid phase, - holding time: 30 seconds, - online dilution with cold water to bring the refractometric reading to less than 0.5%.
  • anionic starches those identified below were used: - a starch sulfosuccinate having a DS of 0.05 (in this case that marketed by the Applicant Company under the brand VECTOR® A 180), - a sulphated starch with a DS of 0.087, referenced AS, - a phosphate starch with a DS of about 0.04 (in the one marketed by AVEBE under the RETABOND AP brand).
  • the anionic starches studied were prepared by steaming in an open tank under the following conditions: - milk with 4% commercial matter - hold for 5 minutes at 95-98 ° C - online dilution with cold water to bring the refractometric reading to 2%.
  • the operating parameters of the installation have been defined as follows: the rotational speeds of the mixers M1 and M2 were respectively 1000 and 2000 revolutions per minute, - the flow rates of pumps P1, P2 and P3 (return of water under canvas) were 400 milliliters per minute), - turbidimeter setting: variable amplifier ⁇ 5.
  • HI-CAT® 180 cationic starch is introduced through element 8, hence a contact time of 5 minutes before switching to "Britt-Jar".
  • the anionic starches are introduced by the element 12, from where a contact time of 30 seconds before the passage on "Britt-Jar".
  • the amount of cationic starch used is 1% on a dry basis relative to the dry fibrous composition.
  • the quantity fixed is that allowing the lowest turbidimetric reading.
  • TEST 1 Control (without starch)
  • TEST 2 HI-CAT® 180 alone (1%)
  • TEST 3 HI-CAT® 180 (1%); VECTOR® A 180 (1.5%)
  • TEST 4 HI-CAT® 180 (1%); AS (1.6%)
  • TEST 5 HI-CAT® 180 (1%); RETABOND AP (0.65%).
  • the measurements are as follows: - measurement of the turbidity of the water under canvas, - evaluation of the overall proportion of starch fixed using the photometer, - measurement of the quantity of fibers and fillers retained, commonly known as “canvas retention”, - measurement of charge retention.
  • the cationic starch used is that of Example 1, prepared under the same conditions.
  • the anionic starch used is the sulphate starch of Example 1. It is prepared by steaming in an open tank under the following conditions: - milk with 5% commercial matter, - hold for 5 minutes at 95-98 ° C, - online dilution with cold water to bring the refractometric reading to 2%.
  • the installation is that of the single figure.
  • the operating parameters of the installation have been defined as follows: - mixer M1: stirring at 1000 revolutions / minute, - mixer M2: stirring at 2000 revolutions / minute, - the flow rates of the pumps P1 and P2 are 500 milliliters per minute, the flow rate of the pump P3 is 400 milliliters per minute, the excess being discharged through line 18, - the pH was maintained at 5.7 with dilute sulfuric acid, introduced into the canvas water supplied for dilution.
  • the respective introduction points of the cationic starch and the anionic starch were chosen as follows: - the cationic starch was introduced by element 8 (contact time of 10 minutes) and an additional quantity was, in certain tests, was introduced by element 14, - the anionic starch was introduced by element 12.
  • the amounts of cationic and anionic starch are expressed on a dry basis relative to the dry fibrous composition contained in the vat 1.
  • the measurements carried out are those of the turbidity of the water under canvas, the web retention and the amount of starch (in mg / l) found in the water under canvas determined by enzymatic assay.
  • the pH of the canvas water is 5.7 to 5.8.
  • the fibrous composition was taken after the second mixer, instead of carrying out the measurements on "Britt-Jar” and “formettes” (sheets of paper) of a grammage were prepared. approximately 150 g / m2 using this paste using the RAPID-KOETHEN type material marketed for example by the company Enrico Toniolo SpA (Milan, Italy) and well known to those skilled in the art.
  • the cationicity of the starch is varied.
  • a thick pulp obtained from old paper was removed on an industrial machine, then diluted with canvas water from the same machine to form the fibrous composition intended to supply the installation according to the single figure.
  • a first cationic starch was used, namely that of Example 1, which was prepared by cooking in a continuous cooker.
  • a second cationic starch namely a cationic starch having an average DS of 0.12 (1% of fixed nitrogen) referenced AMIDON 608, was also used.
  • the anionic starch used is one of those used in Example 1, namely the starch sulfosuccinate VECTOR® A 180.
  • STARCH 608 and VECTOR® A 180 were cooked in an open vat with live steam (5 minutes at 95-98%) from milk with 4% commercial dry matter. The adhesives thus obtained were then diluted to 2% with cold water.
  • the installation used is that shown in the single figure.
  • the cationic starches were introduced by element 8, which gives a contact time of 5 minutes.
  • the anionic starch was introduced by element 12, which gives a contact time of 30 seconds.
  • the quantities of anionic starch used are those for which the turbidimetric reading is the lowest.
  • the pH of the water under canvas is from 6.2 to 6.4.
  • Tests 13, 14 and 15 clearly demonstrate that, under the conditions adopted for this example, the use of a cationic starch with a higher DS makes it possible to increase the retention while bringing about a clarification of the waters under canvas.
  • Test 16 shows that the successive use of a cationic starch of the AMIDON 608 type and an anionic starch leads to very clear water under canvas despite high doses of starchy foods (approximately 3%) and to excellent retention. In addition, the amount of starch attached is remarkable.
  • composition was taken from an industrial machine, then diluted with water under canvas from the same machine.
  • a cationic starch having a fixed nitrogen content of between 0.35 and 0.40 ie a DS between 0.04 and 0.046 was used, in occurrence that marketed by the Applicant Company under the HI-CAT® 142 brand.
  • the method of preparation proper for its implementation is that described for the cationic starch HI-CAT® 180.
  • anionic starch VECTOR® A 180 was used as anionic starch.
  • the operating parameters of the installation are defined as follows: - mixer M1: agitation of 1000 revolutions / minute, - mixer M2: agitation of 2000 revolutions / minute, - flow rates of pumps P1, P2 and P3: 400 ml / minute.
  • the cationic starch is introduced through element 8, which gives a contact time of 5 minutes.
  • the anionic starch is introduced through the element 12, which gives a contact time of 30 seconds.
  • TEST 17 Witness (none)
  • TEST 18 1.2%
  • TEST 19 1.2% of HI-CAT® 142 - 0.66% of VECTOR® A 180.
  • the fixing of starches on the fibers is likewise improved.
  • the basic composition is here: - 40% bleached Kraft - 15% bleached mechanical pulp - long fibers - 45% bleached mechanical pulp - short fibers.
  • the preparation is obtained with the help of which the system is fed according to the single figure.
  • the operating parameters of the installation are as follows: - mixer M1: agitation of 1000 revolutions / minute, - mixer M2: agitation of 2000 revolutions / minute, - flow rates of pumps P1, P2 and P3: 400 ml / minute.
  • the pH is adjusted to a value of 7-7.2 by introduction of dilute sodium hydroxide at the junction 20 of the lines 19 and 9.
  • the cationic starch is introduced through element 8, which gives a contact time of 5 minutes.
  • the anionic starch is introduced through the element 12, which gives a contact time of 30 seconds.
  • TEST 20 Witness (none)
  • TEST 21 1.2% of HI-CAT® 142
  • TEST 22 1.2% of HI-CAT® 142 and 0.54% of VECTOR® A 180.
  • the amount of anionic starch was chosen so that the lowest turbidimetric reading was obtained.

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  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Materials For Medical Uses (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Inorganic Fibers (AREA)
  • Polarising Elements (AREA)
EP88400568A 1987-03-13 1988-03-10 Verfahren zur Papierherstellung Expired - Lifetime EP0282415B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400568T ATE63343T1 (de) 1987-03-13 1988-03-10 Verfahren zur papierherstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8703481 1987-03-13
FR8703481A FR2612213B1 (fr) 1987-03-13 1987-03-13 Procede de fabrication du papier

Publications (3)

Publication Number Publication Date
EP0282415A1 true EP0282415A1 (de) 1988-09-14
EP0282415B1 EP0282415B1 (de) 1991-05-08
EP0282415B2 EP0282415B2 (de) 1999-10-06

Family

ID=9348951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400568A Expired - Lifetime EP0282415B2 (de) 1987-03-13 1988-03-10 Verfahren zur Papierherstellung

Country Status (14)

Country Link
US (1) US5129989A (de)
EP (1) EP0282415B2 (de)
JP (1) JP2667185B2 (de)
AT (1) ATE63343T1 (de)
AU (1) AU608577B2 (de)
CA (1) CA1302020C (de)
DE (1) DE3862661D1 (de)
DK (1) DK169573B1 (de)
ES (1) ES2022649T5 (de)
FI (1) FI93133C (de)
FR (1) FR2612213B1 (de)
GR (2) GR3001914T3 (de)
NO (1) NO170893C (de)
PT (1) PT86961B (de)

Cited By (8)

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EP0786476A1 (de) 1996-01-23 1997-07-30 Roquette FrÀ¨res Zusammensetzung und Verfahren zur Leimung von flächigen Strukturen
US5891305A (en) * 1995-03-31 1999-04-06 Roquette Freres Process for the manufacture of paper
US5932001A (en) * 1996-05-15 1999-08-03 Roquette Freres Plaster composition containing an amylaceous compound
WO1999064677A1 (en) * 1998-06-10 1999-12-16 Coöperatieve Verkoop- En Productievereniging Van Aardappelmeel En Derivaten Avebe B.A. A process for making paper
FR2794479A1 (fr) * 1999-06-04 2000-12-08 Roquette Freres Composition et procede pour la fabrication de structures planes, en particulier du papier ou du carton
FR2812669A1 (fr) * 2000-08-07 2002-02-08 Nat Starch Chem Invest Procede pour la production de papier, utilisant des associations de polymeres d'amidon
US8444820B2 (en) 2007-11-20 2013-05-21 Roquette Freres Aqueous composition containing at least one soluble gelatinized anionic starch
US8911593B2 (en) 2003-05-12 2014-12-16 Roquette Freres Method for the cationisation of legume starches, cationic starches thus obtained applications thereof

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ATE141357T1 (de) * 1991-07-02 1996-08-15 Eka Chemicals Ab Verfahren zur herstellung von papier
US5942086A (en) * 1994-08-16 1999-08-24 Philip Chem-Solv, Inc. Application of material to a substrate
FR2734005B1 (fr) * 1995-05-12 1997-07-18 Roquette Freres Composition et procede pour le collage du papier
CA2282211C (en) * 1998-10-16 2007-01-09 Grain Processing Corporation Process for preparing a paper web
WO2001094699A1 (en) * 2000-06-02 2001-12-13 National Starch And Chemical Investment Holding Corporation A method of making paper
US6918995B2 (en) * 2000-08-07 2005-07-19 Akzo Nobel N.V. Process for the production of paper
US20020166648A1 (en) * 2000-08-07 2002-11-14 Sten Frolich Process for manufacturing paper
US20040138438A1 (en) * 2002-10-01 2004-07-15 Fredrik Solhage Cationised polysaccharide product
US20040104004A1 (en) * 2002-10-01 2004-06-03 Fredrik Solhage Cationised polysaccharide product
US20060213630A1 (en) * 2005-03-22 2006-09-28 Bunker Daniel T Method for making a low density multi-ply paperboard with high internal bond strength
CL2008002019A1 (es) 2007-07-16 2009-01-16 Akzo Nobel Chemicals Int Bv Composicion de carga que comprende una carga, un compuesto inorganico cationico, un compuesto organico cationico y un polisacarido anionico; metodo para preparar dicha composicion; uso como aditivo para una suspension celulosica acuosa; procedimiento para producir papel; y papel.
AT511413B1 (de) * 2011-05-10 2015-02-15 Steindl Roman Dipl Ing Verfahren zur herstellung von papierprodukten
US10240294B2 (en) * 2013-01-31 2019-03-26 Glatfelter Gernsbach Gmbh Crosslinking/functionalization system for a paper or non-woven web
CA2907078C (en) * 2013-03-15 2021-06-29 Dober Chemical Corp. Dewatering compositions and methods
FI20185272A1 (en) 2018-03-22 2019-09-23 Kemira Oyj The dry strength composition, its use, and the method of making paper, board or the like

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FR2435554A1 (fr) * 1978-09-08 1980-04-04 Dalle & Lecomte Papeteries Produit papetier a forte teneur en charge

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US4066495A (en) * 1974-06-26 1978-01-03 Anheuser-Busch, Incorporated Method of making paper containing cationic starch and an anionic retention aid
FR2435554A1 (fr) * 1978-09-08 1980-04-04 Dalle & Lecomte Papeteries Produit papetier a forte teneur en charge

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Title
TAPPI, vol. 56, no. 3, mars 1973, pages 83-86, Atlanta, Georgia, US; K.W. BRITT: "Retention of additives during sheet formation" *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5891305A (en) * 1995-03-31 1999-04-06 Roquette Freres Process for the manufacture of paper
EP0786476A1 (de) 1996-01-23 1997-07-30 Roquette FrÀ¨res Zusammensetzung und Verfahren zur Leimung von flächigen Strukturen
US5932001A (en) * 1996-05-15 1999-08-03 Roquette Freres Plaster composition containing an amylaceous compound
WO1999064677A1 (en) * 1998-06-10 1999-12-16 Coöperatieve Verkoop- En Productievereniging Van Aardappelmeel En Derivaten Avebe B.A. A process for making paper
FR2794479A1 (fr) * 1999-06-04 2000-12-08 Roquette Freres Composition et procede pour la fabrication de structures planes, en particulier du papier ou du carton
WO2000075425A1 (fr) * 1999-06-04 2000-12-14 Roquette Freres Composition et procede pour la fabrication de structures planes, en particulier du papier ou du carton
FR2812669A1 (fr) * 2000-08-07 2002-02-08 Nat Starch Chem Invest Procede pour la production de papier, utilisant des associations de polymeres d'amidon
US8911593B2 (en) 2003-05-12 2014-12-16 Roquette Freres Method for the cationisation of legume starches, cationic starches thus obtained applications thereof
US8444820B2 (en) 2007-11-20 2013-05-21 Roquette Freres Aqueous composition containing at least one soluble gelatinized anionic starch

Also Published As

Publication number Publication date
FI881107A (fi) 1988-09-14
FI93133C (fi) 1995-02-27
NO170893C (no) 1992-12-23
AU608577B2 (en) 1991-04-11
CA1302020C (en) 1992-06-02
DE3862661D1 (de) 1991-06-13
EP0282415B1 (de) 1991-05-08
DK135088A (da) 1988-09-14
FR2612213B1 (fr) 1989-06-30
JPS63264997A (ja) 1988-11-01
ES2022649T5 (es) 1999-12-16
GR3032281T3 (en) 2000-04-27
FI881107A0 (fi) 1988-03-09
FR2612213A1 (fr) 1988-09-16
NO881107D0 (no) 1988-03-11
AU1304088A (en) 1988-09-15
DK169573B1 (da) 1994-12-05
US5129989A (en) 1992-07-14
DK135088D0 (da) 1988-03-11
ATE63343T1 (de) 1991-05-15
PT86961A (pt) 1988-04-01
EP0282415B2 (de) 1999-10-06
PT86961B (pt) 1992-06-30
JP2667185B2 (ja) 1997-10-27
NO170893B (no) 1992-09-14
GR3001914T3 (en) 1992-11-23
FI93133B (fi) 1994-11-15
ES2022649B3 (es) 1991-12-01
NO881107L (no) 1988-09-14

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