WO2006056228A1 - Composition dispersable dans l'eau pour le traitement du papier - Google Patents

Composition dispersable dans l'eau pour le traitement du papier

Info

Publication number
WO2006056228A1
WO2006056228A1 PCT/EP2004/013487 EP2004013487W WO2006056228A1 WO 2006056228 A1 WO2006056228 A1 WO 2006056228A1 EP 2004013487 W EP2004013487 W EP 2004013487W WO 2006056228 A1 WO2006056228 A1 WO 2006056228A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition according
preceeding
paper
composition
component
Prior art date
Application number
PCT/EP2004/013487
Other languages
English (en)
Inventor
Eric JÖNSSON
Original Assignee
Topchim N.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Topchim N.V. filed Critical Topchim N.V.
Priority to PCT/EP2004/013487 priority Critical patent/WO2006056228A1/fr
Publication of WO2006056228A1 publication Critical patent/WO2006056228A1/fr

Links

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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
    • D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
    • 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
    • D21H17/35—Polyalkenes, e.g. polystyrene
    • 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
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids 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
    • 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
    • D21H21/16—Sizing or water-repelling 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
    • 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
    • D21H21/50—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 form
    • D21H21/52—Additives of definite length or shape

Definitions

  • the present invention relates to a water-dispersible composition, which when applied to paper gives a low permeability for gas and moisture and a moisture-proof paper made using the foregoing composition.
  • a composition for making an easily macerating moisture proof paper is known from
  • the composition is based upon a mixture of polyvinyl butyral, styrene maleic imide and ethylene acrylate and possibly other components.
  • polyvinyl butyral offers a number of disadvantages.
  • this product is difficult to produce and always contains residue of solvent, which can lead to unwanted effects in the paper to be coated with the final composition.
  • polyvinyl butyral is difficult to bring into a suspension and depending upon the pH-value the emulsion may be unstable.
  • the object of the present invention is to provide a composition, for making a water repellent paper with a low permeability for moisture vapour.
  • the present invention is described in detail below.
  • the aqueous emulsion of the present invention contains the components (A), (B) and (C) described above as the essential components.
  • Component (A) is 25 to 35 % by weight of SBR. If the content of the SBR in the composition of the present invention is below 25 wt %; the paper obtained with such emulsion has poor water repulsive properties and a too low moisture permeability. A composition with more than 35 wt % of SBR has a too high shear resistance for being applied in a high speed paper coating process. A preferred composition comprises 25 to 32 wt % SRB. Paper treated with a composition according to the invention comprising less than 32 wt % of SBR can be macerated with an home mixer using a low mixing speed while a paper casted from a thus obtained pulp exhibits no sticky and agglomerated particles. Paper treated with a composition comprising at least 28 wt % of the SBR turned out to have an excellent resistance against penetration of solvents.
  • SBR generally is used as an emulsion in water.
  • a suitable concentration of the SBR emulsion is about 50 wt %.
  • a concentration above 50 wt % is hard to process due to its fast drying character.
  • the emulsion comprises SBR particles with a preferred average particle size of between 5 and 1000 nm.
  • the emulsion further comprise an emulsifier.
  • Component (B) is a styrene maleic anhydride copolymer (SMA) or a salt thereof comprising preferably between 20 and 50 % by weight of maleic anhydride units.
  • SMA styrene maleic anhydride copolymer
  • a suitable molecular weight of the SMA is between 20.000 and 250.000 g/mol.
  • the amount of SMA in the composition of the invention is between 0,1 and 10 wt %.
  • An amount of at least 0,1 wt % of SMA improves the rheological behaviour of the composition of the present invention.
  • the aqueous emulsion of the present invention can be produced by, for example, the following method.
  • the SBR emulsion as the component (A) is placed in a vessel equipped with a stirrer and stirred to an extent of not forming bubbles.
  • An aqueous solution of SMA (B) are subsequently added, followed by the component (C) and followed by stirring for mixing, possibly followed by component (D).
  • the aqueous emulsion of the present invention can be thus obtained.
  • the presence of the component D gives an improvement of sticking properties of the composition.
  • the glass particles can be silanesed, and preferable their diameter is between 10 nanometers and 40 micrometers. Silanesing improves the chemical reaction between glass particles and SBR thereby reducing the sticking tendency considerably.
  • the amount of glass particles is at least 2 % by weight.
  • the amount of component D may be limited to 5 % by weight.
  • the invention further relates to an easily macerating moisture-proof paper comprising a base paper being coated on at least one surface thereof a layer of an aqueous emulsion comprising a water-dispersible composition according to the invention, wherein the solid content in the aqueous emulsion is from 30 to 75 % by weight.
  • the solid content is from 45 to 65 % by weight.
  • the viscosity of the composition according to the invention is suitable for processing on a paper coating machine.
  • the viscosity of a composition with 45 to 50 wt % of solid content allows processing on high speed paper coating machines.
  • the easily macerating moisture-proof paper of the present invention is obtained by coating the aqueous emulsion on at least one surface of a base paper in an amount of from 8 to 25 g/m 2 . If the amount of the aqueous emulsion used is below 8 g/m 2 , the paper obtained has poor moisture-proof property and water repellency by the formation of pinholes and the occurrence of fluffing of the fibers of the base paper, while if the amount of the aqueous emulsion is above 25 g/m 2 no relevant improvement of the vapor transmission rate is obtained.
  • a kraft paper, a wood free paper, a corrugated board base paper, etc. can be used as the base paper, but the base paper used in the present invention is not limited to those.
  • the definite amount of the aqueous emulsion is coated on a base paper with e.g. a blade, a rollercoater or an Airknivecoater, and dried at a temperature of higher than about 125 0 C. and up to 200 0 C.
  • a base paper with e.g. a blade, a rollercoater or an Airknivecoater
  • the drying temperature is too low, it sometimes happens that the easily macerating moisture- proof paper obtained is inferior in the moisture-proof property.
  • the easily macerating moisture-proof paper of the present invention is most suitably used in a wide field, for example, as a wrapping paper, a water-resistant corrugated fibreboard paper, food packaging paper or carboard, petfood packaging paper or carboard, a wrapping paper for copying paper owing to the excellent characteristics.
  • composition according to the invention is free of halogens, has a high resistance against solvents and can be applied on-line on a paper production machine.
  • a paper treated with the composition of the invention exhibits a high oxygen barrier, which makes it very suitable for the packaging of food.
  • Aqueous compositions were obtained with amount of the components (A) to (C) a shown in Table 1.
  • coated paper was made under the following coating condition : each coated paper was obtained by coating each aqueous emulsion on a kraft paper having a basis weight as given in table 1 with a roller coater at a coating amount as shown in table 1.
  • the coated paper was dried at 140 0 C and items of the vapor transmission rate, the water repellency, the friction coefficient, and the grease resistance were evaluated as follows.
  • the vapor transmission rate was measures a cup method according to DIN 53122.
  • the water repellency was measured according to the Cobb method during 3 respectively 10 minutes with a kraft paper treated with 8 g/m 2 of a composition according to table 1.
  • the grease resistance is measured according to the Kitt test according to 3M.
  • the measurement of the gloss was done by coating the paper with the different compositions and to coil the paper. During coiling the coated surface of the paper is contacting the rear surface of the paper/cardboard. If the two contacting surfaces are sticking to each other one or both of the surfaces may be damages after decoiling. Measuring the gloss therefore represents an indication of the sticking properties of the coated paper/cardboard. Based upon this measurement it has been found that the addition of glass particles reducing the sticking tendency of the coated paper, as becomes evident from the values in the column C. O. F.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

L'invention concerne une composition dispersable dans l'eau comprenant les constituants (A) à (D), compris dans les pourcentages en poids suivants: (A) entre 25 et 35% en poids de latex styrène-butadiène (SBL), (B) entre 0,1 et 10% en poids d'un polymère styrène/anhydride maléique ou d'un sel de celui-ci (SMA), (C) entre 55 et 74% en poids d'un minéral, de préférence du talc et/ou du mica, et (D) entre 0 et 15% en poids de particules de verre présentant une forme sensiblement sphérique et un diamètre moyen compris entre 10 nanomètres et 200 micromètres.
PCT/EP2004/013487 2004-11-25 2004-11-25 Composition dispersable dans l'eau pour le traitement du papier WO2006056228A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/013487 WO2006056228A1 (fr) 2004-11-25 2004-11-25 Composition dispersable dans l'eau pour le traitement du papier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/013487 WO2006056228A1 (fr) 2004-11-25 2004-11-25 Composition dispersable dans l'eau pour le traitement du papier

Publications (1)

Publication Number Publication Date
WO2006056228A1 true WO2006056228A1 (fr) 2006-06-01

Family

ID=34959463

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/013487 WO2006056228A1 (fr) 2004-11-25 2004-11-25 Composition dispersable dans l'eau pour le traitement du papier

Country Status (1)

Country Link
WO (1) WO2006056228A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567672A (en) * 1967-05-03 1971-03-02 Polymer Corp Coating composition and process comprising calcium sulfoaluminate pigment,a rubbery latex binder and a copolymer of styrene and maleic monomer
US4361669A (en) * 1981-08-17 1982-11-30 Champion International Corporation Coating compositions comprising a reaction product of a dispersed _hydroxy-alkyl modified starch product and a hydrolyzed styrene maleic anhydride copolymer
WO1999058609A1 (fr) * 1998-05-12 1999-11-18 Hercules Incorporated Systeme aqueux comprenant un polymere ionique et un promoteur de viscosite
WO2002048459A2 (fr) * 2000-12-11 2002-06-20 Topchim N.V. Composition de couchage
EP1396576A1 (fr) * 2002-09-04 2004-03-10 Raisio Chemicals Oy Composition de revetement
EP1403427A1 (fr) * 2001-03-29 2004-03-31 Nippon Paper Industries Co., Ltd. Papier couche d'imprimerie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567672A (en) * 1967-05-03 1971-03-02 Polymer Corp Coating composition and process comprising calcium sulfoaluminate pigment,a rubbery latex binder and a copolymer of styrene and maleic monomer
US4361669A (en) * 1981-08-17 1982-11-30 Champion International Corporation Coating compositions comprising a reaction product of a dispersed _hydroxy-alkyl modified starch product and a hydrolyzed styrene maleic anhydride copolymer
WO1999058609A1 (fr) * 1998-05-12 1999-11-18 Hercules Incorporated Systeme aqueux comprenant un polymere ionique et un promoteur de viscosite
WO2002048459A2 (fr) * 2000-12-11 2002-06-20 Topchim N.V. Composition de couchage
EP1403427A1 (fr) * 2001-03-29 2004-03-31 Nippon Paper Industries Co., Ltd. Papier couche d'imprimerie
EP1396576A1 (fr) * 2002-09-04 2004-03-10 Raisio Chemicals Oy Composition de revetement

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