EP0193111B1 - Procédé de fabrication de papier à résistance élevée à l'état sec - Google Patents

Procédé de fabrication de papier à résistance élevée à l'état sec Download PDF

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Publication number
EP0193111B1
EP0193111B1 EP86102199A EP86102199A EP0193111B1 EP 0193111 B1 EP0193111 B1 EP 0193111B1 EP 86102199 A EP86102199 A EP 86102199A EP 86102199 A EP86102199 A EP 86102199A EP 0193111 B1 EP0193111 B1 EP 0193111B1
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EP
European Patent Office
Prior art keywords
weight
component
copolymer
paper
ethylenically unsaturated
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
Application number
EP86102199A
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German (de)
English (en)
Other versions
EP0193111A2 (fr
EP0193111A3 (en
Inventor
Sigberg Dr. Pfohl
Heinrich Dr. Hartmann
Guenter Dr. Frey
Michael Dr. Kroener
Klaus Guth
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BASF SE
Original Assignee
BASF SE
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Filing date
Publication date
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Priority to AT86102199T priority Critical patent/ATE48667T1/de
Publication of EP0193111A2 publication Critical patent/EP0193111A2/fr
Publication of EP0193111A3 publication Critical patent/EP0193111A3/de
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Publication of EP0193111B1 publication Critical patent/EP0193111B1/fr
Expired legal-status Critical Current

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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
    • D21H21/14—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 characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents
    • 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
    • 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
    • D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
    • D21H17/43—Carboxyl groups or derivatives thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—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

Definitions

  • the sheet is then formed from the resulting pulp with drying and dried.
  • An essential aspect of this process is that a substantial amount of binder latex (2) is used, namely 10 to 50% by weight of binder solids excluding other polymeric additives.
  • DE-B-11 76 990 discloses a process for increasing the dry strength of fibrous webs, in which the pulp pulp is mixed with an aqueous dispersion of a nonionic dispersant and one or more linear polymers of vinyl compounds containing carbonxyl groups and / or salts thereof, is treated in the presence of one or more polycationic nitrogen compounds. Preferably 10 to 50% by weight of carboxyl group-containing resin is used.
  • a process for the production of paper with high dry strength in which a water-soluble cationic polymer, for. B. polyethyleneimine, and then a water-soluble anionic polymer, for. B. adds a hydrolyzed polyacrylamide and dewatered the paper stock on a paper machine with sheet formation.
  • the anionic polymers contain up to 30 mol% of acrylic acid copolymerized. Since the dry strength agent is already added to the paper stock, a surface application is no longer necessary, but after a certain time the anionic polyacrylamides lead to poorer dewatering of the stock suspension and to a sticking of the felts of the paper machine.
  • the present invention has for its object to provide a process for the production of paper with high dry strength and the lowest possible wet strength, in which compared to the process known from CA-PS 1 110 019 papers with improved dry strength and in the case of use bleached fabrics get papers with higher whiteness.
  • the cationic polymers are added to the fabric in order to transfer the negatively charged cellulose fibers.
  • the following classes of compounds are suitable as water-soluble cationic polymers (A): polyethyleneimines which, in 10% strength aqueous solution at a pH of 7, have a viscosity in the range from 5 to 100, preferably 10 to 40 mPas (measured at 20 ° C, rotational viscometer, 20 rpm).
  • the polymers can be neutralized with organic acids such as formic acid, acetic acid or propionic acid or with inorganic acids such as hydrochloric acid, sulfuric acid or phosphoric acid.
  • component (A) Partially to fully hydrolyzed homo- and copolymers of N-vinylformamide are also suitable as component (A).
  • the degree of hydrolysis of the N-vinylformamide in these polymers is at least 30 mol% and is preferably in the range from 50 to 100 mol%. For example, if one starts from a homopolymer of N-vinylformamide and hydrolyzes 100%, a polyvinylamine is obtained.
  • Copolymers of N-vinylformamide with other monomers e.g. B. vinyl acetate, acrylonitrile, methacrylniytil, acrylamide and methacrylamide can also be hydrolyzed by the action of acids or bases.
  • the degree of hydrolysis stated above always relates to the N-vinylformamide content of the copolymer in the copolymers of N-vinylformamide.
  • Saponification of copolymers of N-vinylformamide and vinyl acetate gives polymers which, in addition to the units of the monomers on which these polymers are based, also have units of vinylamine and vinyl alcohol.
  • Suitable homopolymers of N-vinylformamide and copolymers of N-vinylformamide with other ethylenically unsaturated monomers have a K value (according to H. Fikentscher) from 50 to 250 and preferably from 100 to 150.
  • the K value of the unsaponified and the saponified "N -Vinylformamidpolymerisate agrees within the limits of error.
  • component (A) are homopolymers and copolymers of N-vinylimidazole and N-vinylimidazoline and their derivatives.
  • the copolymers contain at least 30% by weight of N-vinylimidazole or N-vinylimidazoline or their derivatives in copolymerized form.
  • suitable comonomers are acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, vinyl propionate, vinyl lactate and vinyl C 1 -C 4 -alkyl ethers (e.g. vinyl methyl ether or vinyl ethyl ether).
  • suitable derivatives of N-vinylimidazole and N-vinylimidazoline are, for example, the C 1 - to C 3 -alkyl-substituted or phenyl-substituted compounds.
  • the polymers of N-vinylimidazole and N-vinylimidazoline have K values (determined according to H. Fikentscher) from 50 to 250 and preferably 100 to 150.
  • water-soluble cationic polymers are polyamidoamines which are crosslinked with epichlorohydrin. Suitable products of this type are known, for example, from US Pat. No. 2,926,116. They are made by using a dicarboxylic acid such as adipic acid with a polyamine e.g. B. condensed diethylene triamine or tetraethylene pentamine and the resulting resin cross-linked with epichlorohydrin to the extent that water-soluble reaction products are still obtained. These polymers have a viscosity of 20 to 200 mPas in a 10% by weight aqueous solution at a temperature of 20 ° C. (measured with a rotary viscometer at 20 rpm).
  • This group of cationic polymers also includes polyamidoamines grafted with ethyleneimine, which are crosslinked with epichlorohydrin or, according to DE-PS2434816, with reaction products which are reacted with at least equivalent amounts by reacting the terminal OH groups of polyalkylene oxides with 8 to 100 alkylene oxide units (preferably polyethylene oxides) Epichlorohydrin can be obtained.
  • the viscosity of the water-soluble products grafted and crosslinked with ethyleneimine measured with a rotary viscometer at 20 rpm and 20 ° C., is 300 to 2500 mPas.
  • cationic polymers (A) are homopolymers of diallyldi-C 1 -C 3 -alkylammonium compounds and diallyl mono-C i -C 3 -amines. Either the free bases or the halides, in particular the chlorides, can be used. Homopolymers of diallyldimethylammonium chloride and diallyldiethylammonium chloride are particularly suitable.
  • the polymers of this class of substances have K values (measured according to H. Fikentscher) from 50 to 150, preferably from 100 to 150.
  • polyethyleneimines polyvinylamines which are prepared by hydrolysis of homopolymers of N-vinylformamide or of copolymers of N-vinylformamide and vinyl acetate, acrylamide or acrylonitrile, the degree of hydrolysis, in each case based on polymerized N- Vinylformamide, at least 50 to 100 mol.%, And polyvinylimidazole.
  • 0.01 to 3 preferably 0.1 to 0.5% by weight of a cationic compound (A) is used. It is of course also possible to have one Use mixture of 2 or 3 different cationic compounds in the process according to the invention. If the cationic compounds (A) are strongly basic, they can be used in a form partially or completely neutralized with an acid. The pH of these solutions is then 6 to 8, preferably 7 to 7.5.
  • the water-soluble anionic polymers - component (B) - are, for example, homopolymers of ethylenically unsaturated C 3 to C 5 carboxylic acids. These include, for example, homopolymers of acrylic acid, methacrylic acid, maleic acid, hydrolyzed homopolymers of maleic anhydride and itanconic acid.
  • the ethylenically unsaturated carboxylic acids mentioned can be copolymerized with other monomers.
  • Suitable as component (B) are copolymers of (a) 35 to 99% by weight of ethylenically unsaturated C 3 to C s carboxylic acids, (b) 65 to 1% by weight of an amide, nitrile and / or an ester of an ethylenic unsaturated C 3 to C 5 carboxylic acid and (c) 0 to 15% by weight of styrene or a C 1 to C 4 alkyl vinyl ether.
  • the copolymers preferably contain (a) 40 to 70% by weight of an ethylenically unsaturated C 3 to C 5 carboxylic acid, (b) 60 to 30% by weight of an amide, nitrile and / or an ester of an ethylenically unsaturated carboxylic acid and (c ) 0 to 15 wt .-% styrene or a C 1 - to C 4 alkyl vinyl ether.
  • the sum of the percentages by weight in the copolymer is 100 in each case.
  • the esters of ethylenically unsaturated C s to C s carboxylic acids of component (b) of the copolymers are preferably derived from alcohols having 1 to 4 carbon atoms.
  • component (B) Particularly preferred as component (B) are terpolymers made of (a) 40 to 70% by weight of acrylic acid, (b 1 ) 10 to 50% by weight of acrylamide and (b 2 ) 10 to 50% by weight of acrylonitrile.
  • the anionic water-soluble polymers (B) have a K value (according to H. Fikentscher) from 50 to 250 and preferably from 100 to 150.
  • the K value for the copolymers is determined at 20 ° C. in 5% strength aqueous sodium chloride solution and one Polymer concentration of 0.5% by weight.
  • the pH when determining the K values is 7.
  • the anionic component (B) is used in an amount of 0.05 to 3, preferably 0.1 to 1.0,% by weight, based on the dry fiber material.
  • the weight ratio of components (A) to (B) is 1: 0.5 to 10 and is preferably in the range from 1: 2 to 4.
  • the anionic component can be neutralized in the form of the free acids or partially or completely with bases Form apply. It is only important here that the partially or completely neutralized polymers are soluble in water.
  • bases are alkali and alkaline earths as well as ammonia and amines, for. B. sodium hydroxide solution, potassium hydroxide solution, calcium hydroxide, barium hydroxide, ammonia, trimethylamine, ethanolamine and morpholine.
  • All known paper and cardboard qualities can be produced by the method according to the invention, e.g. B.
  • the papers can be made from a variety of different types of fiber materials, for example from sulfite or sulfate pulp in the bleached or unbleached state, wood, ground or waste paper.
  • the papermaking takes place in the pH range from 4.5 to 8, preferably at pH values from 6 to 7.
  • sulfuric acid or aluminum sulfate can be used.
  • the process according to the invention is preferably carried out in the presence of only small amounts of aluminum sulfate.
  • the cationic component (A) which is responsible for the recharge of the cellulose fibers, is first added to the substance.
  • Component (A) is very quickly fixed on the fibers.
  • a certain dwell time e.g. B. after 1 to 10 minutes, one or more compounds according to (B) are added to the substance, the mixture is homogenized and, if appropriate, other conventional auxiliaries are added, such as retention aids, drainage agents, fillers, sizing agents, optical brighteners, defoamers, dyes, starch, Polyvinyl alcohol, carboxymethyl cellulose or mannogalactane - and then forms the sheet on a paper machine.
  • other conventional auxiliaries such as retention aids, drainage agents, fillers, sizing agents, optical brighteners, defoamers, dyes, starch, Polyvinyl alcohol, carboxymethyl cellulose or mannogalactane - and then forms the sheet on a paper machine.
  • the anionic components (B) when using the anionic components (B), an improvement in the retention of fibers and fillers and also conventional auxiliaries, such as starch or carboxymethyl cellulose, is observed in all paper grades.
  • Another advantage of using the anionic compounds (B) is an improvement in the dewatering of the stock suspension and the fact that the felts of the paper machine do not stick together even over a long period of time. Because of these advantageous properties, the method according to the invention is of particular importance for the production of paper from waste paper. In the production of bleached paper grades, there is a significantly higher whiteness of the paper compared to the methods of the prior art.
  • the parts given in the following examples are parts by weight, the percentages relate to the weight of the substances.
  • the sheets were produced in a Rapid-Köthen laboratory sheet former.
  • the dry tear length was determined in accordance with DIN 53 112, sheet 1 and the wet tear length in accordance with DIN 53 113, sheet 2.
  • the whiteness of the paper sheets was determined with the aid of a reflection photometer (Elrefo device) in accordance with DIN 53 145.
  • the CMT value was determined in accordance with DIN 53 143, the dry burst pressure was determined in accordance with DIN 53 141.
  • a 0.5% aqueous stock suspension was prepared from 100% mixed waste paper.
  • the pH of the suspension was 7.2, the degree of grinding of the material was 50 ° Schopper-Riegler (SR).
  • the stock suspension was then divided into five equal parts and processed into sheets with a mass per unit area of 120 g / m 2 under the following conditions:
  • a sheet was formed from the stock suspension without further additives.
  • a 70% bleached wood pulp and 30% bleached beech sulfite pulp were used to produce a 0.5% aqueous suspension which had a pH of 7.5 and a freeness of 45 ° SR.
  • the suspension was divided into five equal parts and processed into sheets with a mass per unit area of 100 g / m 2 under the following conditions:
  • the stock suspension described above was processed directly into a sheet.
  • a 70% bleached pine sulphate pulp and 30% bleached birch sulphate pulp were used to produce a 0.5% aqueous pulp suspension which had a pH of 6.5 and a freeness of 30 ° SR. This suspension was divided into 5 equal parts and processed into sheets with a mass per unit area of 80 g / m 2 as described below:
  • the stock suspension was dewatered without any further addition, with leaf formation.
  • a resin was added, based on dry fiber stock, which was obtained by condensing adipic acid with diethylenetriamine and crosslinking the polyamidoamine with epichlorohydrin according to Example 1 of US Pat. No. 2,926,116. After a residence time of 2 minutes, 0.5% of a copolymer of 80% acrylamide, 10% acrylonitrile and 10% acrylic acid was added. The copolymer was in the form of the sodium salt and had a K value of 130. After an exposure time of 2 minutes, the stock suspension was dewatered to form sheets.
  • aqueous pulp suspension 0.25% of a polyvinylamine with a K value of 140 was added, based on dry pulp and, after an exposure time of 2 minutes, 0.5%, based on dry pulp, of same polymer from 80% acrylamide, 10% acrylonitrile and 10% acrylic acid according to b). After an exposure time of 2 minutes, the stock suspension was dewatered with the formation of leaves.
  • a polyvinylamine with a K value of 140 was added, based on dry pulp and, after an exposure time of 2 minutes, 0.5%, based on dry pulp, of same polymer from 80% acrylamide, 10% acrylonitrile and 10% acrylic acid according to b). After an exposure time of 2 minutes, the stock suspension was dewatered with the formation of leaves.
  • a 0.5% aqueous suspension was prepared from a mixed waste paper, which had a pH of 7.5 and a freeness of 45 ° SR. The stock suspension was then divided into five equal parts and processed into sheets with a basis weight of 120 g / m 2 under the conditions specified below.
  • a sheet was formed from the stock suspension without further addition.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Measurement Of Radiation (AREA)
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Claims (5)

1. Procédé de fabrication de papier avec une résistance mécanique élevée à l'état sec, par additions effectuées successivement A) de polymères cationiques hydrosolubles et B) de polymères anioniques hydrosolubles à la pâte à papier et déshydratation de la pâte à papier pendant la formation de la feuille, dans lequel on utilise le composant (A) à raison de 0,01 à 3 % en poids et le composant (B) à raison de 0,05 à 3 % en poids, à chaque fois par rapport à la pâte à papier séchée, et on utilise comme composant (B) des homopolymères d'acides carboxyliques en Cs-Cs à insaturation éthylénique et/ou des copolymères ayant à chaque fois une valeur de 50 à 250 (déterminée selon H. Fikentscher à 20 °C dans uns solution aqueuse à 5 % de chlorure de sodium et à une concentration en polymère de 0,5 % en poids), copolymères composés de
a) 35 à 99 % en poids d'acides carboxyliques en C3-C5 à insaturation éthylénique.
b) 65 à 1 % en poids d'un amide, nitrile et/ou ester d'un acide carboxylique en C3-C5 à insaturation éthylénique et
c) 0 à 15 % en poids de styrène ou d'un oxyde de vinyle et d'alkyle en C1-C4, la somme des pourcentages en poids dans le copolymère se montant à 100.
2. Procédé selon la revendication 1, caractérisé en ce qu'on utilise comme composant (B) des homopolymères de l'acide acrylique.
3. Procédé selon la revendication 1, caractérisé en ce qu'on utilise comme componsant (B) des copolymères composés de
a) 40 à 70 % en poids d'acides carboxyliques en C3-CS à insaturation éthylénique,
b) 60 à 30 % en poids d'un amide, nitrile et/ou ester d'un acide carboxylique en C3-CS à insaturation éthylénique, et
c) 0 à 15 % en poids de styrène ou d'un oxyde de vinyle et d'alkyle en C1-C4.
4. Procédé selon la revendication 1, caractérisé en ce qu'on utilise comme composant (B) un terpolymère composé de
a) 40 à 70 % en poids d'acide acrylique,
b1) 10 à 50 % en poids d'acrylamide et
b2) 10 à 50 % en poids d'acrylonitrile.
5. Procédé selon la revendication 1, caractérisé en ce qu'on utilise comme composant (A) la polyéthylène-imine, un polymère du N-vinylformamide hydrolysé à au moins 30 à 100 % ou un polymère du N-vinylimidazole et comme composant (B) des copolymères composés de (a) 40 à 70 % en poids d'acide acrylique, (b1) 10 à 50 % en poids d'acrylamide et (b2) 10 à 50 % en poids d'acrylonitrile.
EP86102199A 1985-02-27 1986-02-20 Procédé de fabrication de papier à résistance élevée à l'état sec Expired EP0193111B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102199T ATE48667T1 (de) 1985-02-27 1986-02-20 Verfahren zur herstellung von papier mit hoher trockenfestigkeit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3506832 1985-02-27
DE19853506832 DE3506832A1 (de) 1985-02-27 1985-02-27 Verfahren zur herstellung von papier mit hoher trockenfestigkeit

Publications (3)

Publication Number Publication Date
EP0193111A2 EP0193111A2 (fr) 1986-09-03
EP0193111A3 EP0193111A3 (en) 1987-05-20
EP0193111B1 true EP0193111B1 (fr) 1989-12-13

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ID=6263654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102199A Expired EP0193111B1 (fr) 1985-02-27 1986-02-20 Procédé de fabrication de papier à résistance élevée à l'état sec

Country Status (7)

Country Link
EP (1) EP0193111B1 (fr)
JP (1) JPS61201097A (fr)
AT (1) ATE48667T1 (fr)
AU (1) AU577448B2 (fr)
DE (2) DE3506832A1 (fr)
FI (1) FI860787A (fr)
NZ (1) NZ215254A (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5338406A (en) * 1988-10-03 1994-08-16 Hercules Incorporated Dry strength additive for paper
KR0159921B1 (ko) * 1988-10-03 1999-01-15 마이클 비. 키한 양이온성 및 음이온성 중합체의 혼합물, 그 제법 및 종이용 건조강도 개선 첨가제로서의 용도
DE4105919A1 (de) * 1991-02-26 1992-08-27 Basf Ag Waessrige anschlaemmungen von feinteiligen fuellstoffen und ihre verwendung zur herstellung von fuellstoffhaltigem papier
AU1917492A (en) * 1991-05-03 1992-12-21 Henkel Corporation Wet strength resin composition
US5338407A (en) * 1991-12-23 1994-08-16 Hercules Incorporated Enhancement of paper dry strength by anionic and cationic guar combination
US6228217B1 (en) 1995-01-13 2001-05-08 Hercules Incorporated Strength of paper made from pulp containing surface active, carboxyl compounds
US7090745B2 (en) * 2002-09-13 2006-08-15 University Of Pittsburgh Method for increasing the strength of a cellulosic product
DE102004056551A1 (de) * 2004-11-23 2006-05-24 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton mit hoher Trockenfestigkeit
DE102005029010A1 (de) * 2005-06-21 2006-12-28 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton
PT1999314T (pt) * 2006-03-16 2017-05-26 Basf Se Processo para a produção de papel, cartão e papelão com uma elevada resistência mecânica a seco
CN102027170B (zh) * 2008-05-15 2012-11-21 巴斯夫欧洲公司 具有高干态强度的纸、纸板和卡纸的制造方法
EP2315875B1 (fr) * 2008-08-18 2014-03-05 Basf Se Procédé pour améliorer la résistance à sec du papier, du carton-pâte et du carton
US8529732B2 (en) 2009-02-05 2013-09-10 Basf Se Method for producing paper, card and board with high dry strength
WO2010145956A1 (fr) * 2009-06-16 2010-12-23 Basf Se Procédé permettant d'augmenter la résistance à l'état sec du papier, du carton souple et du carton
CA2777115C (fr) 2009-10-20 2018-06-12 Basf Se Procede de production de papier, carton et carton blanchi de grande resistance a la traction a l'etat sec
CN103930619B (zh) * 2011-08-25 2016-12-07 索理思科技开曼公司 增加强度助剂在制造纸和纸板中的优势的方法
WO2015144428A1 (fr) 2014-03-28 2015-10-01 Basf Se Procédé de fabrication de carton ondulé
WO2016001016A1 (fr) 2014-07-03 2016-01-07 Basf Se Agent de revêtement de surface aqueux pour papiers et cartons
US20170233950A1 (en) * 2014-10-13 2017-08-17 Basf Se Solidifying composition for paper and cardboard
CN107223171A (zh) 2014-12-16 2017-09-29 巴斯夫欧洲公司 制造纸和纸板的方法
EP3695051B1 (fr) 2017-10-11 2024-06-19 Solenis Technologies Cayman, L.P. Procédé de fabrication à partir du papier ou du carton

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049469A (en) * 1957-11-07 1962-08-14 Hercules Powder Co Ltd Application of coating or impregnating materials to fibrous material
US2765229A (en) * 1954-02-15 1956-10-02 Rohm & Haas Methods of producing wet-laid cellulose fibrous products containing synthetic resins
DE2049832A1 (en) * 1968-06-29 1972-04-13 Badische Anilin- & Soda-Fabrik Ag, 6700 Ludwigshafen Bonded fibre felts - wet process prodn in presence of maleic anhydride/vinyl ether copolymers
SE443818B (sv) * 1978-04-24 1986-03-10 Mitsubishi Chem Ind Forfarande for framstellning av papper med forbettrad torrstyrka
DE2843612A1 (de) * 1978-10-18 1980-04-17 Goodrich Co B F Verfahren zur herstellung von papier nach dem nasslegeverfahren
DE2903218A1 (de) * 1979-01-27 1980-08-07 Basf Ag Verfahren zur herstellung von papier mit hoher trockenfestigkeit und niedriger nassfestigkeit
DE3012002A1 (de) * 1980-03-28 1981-10-08 Wolff Walsrode Ag, 3030 Walsrode Verfahren zum veredeln von papier, pappe und karton
DE3277215D1 (en) * 1982-05-03 1987-10-15 Dow Chemical Co Polymeric compositions useful as binders in coating colours and coating colours prepared therefrom
DE3620065A1 (de) * 1986-06-14 1987-12-17 Basf Ag Verfahren zur herstellung von papier, pappe und karton

Also Published As

Publication number Publication date
JPS61201097A (ja) 1986-09-05
EP0193111A2 (fr) 1986-09-03
ATE48667T1 (de) 1989-12-15
NZ215254A (en) 1989-02-24
AU5409786A (en) 1986-09-04
EP0193111A3 (en) 1987-05-20
FI860787A0 (fi) 1986-02-24
FI860787A (fi) 1986-08-28
DE3667516D1 (de) 1990-01-18
AU577448B2 (en) 1988-09-22
DE3506832A1 (de) 1986-08-28

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