WO2006093497A1 - Hydroxyalkylcellulose utilisee en tant qu’additif dans des revetements pigmentes pour presse encolleuse doseuse - Google Patents

Hydroxyalkylcellulose utilisee en tant qu’additif dans des revetements pigmentes pour presse encolleuse doseuse Download PDF

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Publication number
WO2006093497A1
WO2006093497A1 PCT/US2005/006819 US2005006819W WO2006093497A1 WO 2006093497 A1 WO2006093497 A1 WO 2006093497A1 US 2005006819 W US2005006819 W US 2005006819W WO 2006093497 A1 WO2006093497 A1 WO 2006093497A1
Authority
WO
WIPO (PCT)
Prior art keywords
pigmented
hac
coating
ahac
carbons
Prior art date
Application number
PCT/US2005/006819
Other languages
English (en)
Inventor
Charles L. Burdick
Original Assignee
Hercules Incorporated
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 Hercules Incorporated filed Critical Hercules Incorporated
Priority to PCT/US2005/006819 priority Critical patent/WO2006093497A1/fr
Priority to ES05724378T priority patent/ES2363016T3/es
Priority to EP05724378A priority patent/EP1853762B1/fr
Priority to AT05724378T priority patent/ATE509157T1/de
Priority to CA002599883A priority patent/CA2599883A1/fr
Publication of WO2006093497A1 publication Critical patent/WO2006093497A1/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
    • 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
    • D21H19/52—Cellulose; 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
    • 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
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls

Definitions

  • the present invention relates to a process for preparing coated paper wherein the coating is applied by a roller or set of rollers as a film layer to a moving paper substrate. More specifically, this invention relates to the adding of a specific type of rheology modifier to a paper coating to enhance the film transfer process so as to effect improved coated paper properties.
  • rheology modifiers it is desired in various industries to use rheology modifiers to achieve thickening, flow control, water retention and other properties in aqueous systems.
  • a number of rheology modifiers are commercially available, such as sodium carboxymethylcellulose (CMC), guar gum, sodium alginate, hydroxyethylcellulose (HEC), alkali-soluble lattices, starch or starch derivatives, and the like.
  • Paper coatings are typically composed of a pigment, such as kaolin clay and calcium carbonate, binders, such as starch and styrene butadiene latex, water, various specialty additives, and at least one of the above mentioned rheology modifiers
  • CMC is established as one of the most prevalent rheology modifiers for traditional blade metered paper-coating application.
  • a new method of applying aqueous pigment containing paper coatings onto the surface of paper has been devised that is known as "pigmented metering size press” or sometimes “film transfer coating”.
  • a wet coating is first metered onto a roller that is typically composed of stainless steel or synthetic substrate.
  • the wet coating film layer is then transferred by contact to a moving web of paper. Typically this operation is performed on both sides of the paper simultaneously.
  • the present invention is directed to a process for preparing coated paper comprising a) adding a water-soluble hydroxyalkylcellulose (HAC) with an alkyl moiety of 1 to 4 carbons, or water soluble alkylhydroxyalkylcellulose (AHAC) with an alkyl hydrophobe of 1 to 24 carbons to a wet coating formulation in a n amount equal to or greater than 0.15 parts HAC or AHAC based on pigment content of the coating and b) applying the pigmented wet coating formulation to a moving paper web via roller metering (film transfer) size press, wherein the use of HAC or AHAC in the pigmented coating significantly reduce misting of the coating during application as compared to the control condition with no HAC or AHAC added.
  • HAC water-soluble hydroxyalkylcellulose
  • AHAC water soluble alkylhydroxyalkylcellulose
  • HEC hydroxyalkylcellulose
  • HEC hydroxyethylcellulose
  • BHEC hydroxybutylcellulose
  • AHAC alkylhydroxyalkylcellulose
  • MHEC methylhydroxyethylcellulose
  • EHEC ethylhydroxyethylcellulose
  • HHEC hydrophobically modified hydroxyethylcellulose
  • Figure 1 is metering size press misting panels with HEC thickened coating at various coater speeds
  • Figure 2 is metering size press misting panels with CMC coating at various coater speeds.
  • This invention has advantages in preventing the misting that has been traditionally observed in the prior art pigmented metering size press operations.
  • the present invention has unexpectedly been found to produce a balance of additional performance properties, such as enhanced fiber coverage, opacity, and brightness that are significantly useful for the end product of the metering size press application.
  • the cellulose ethers operable in the present invention include all water soluble nonionic derivatives of cellulose containing hydroxyethyl functionality and that express aqueous solution viscosities in excess of 100 centipoise at a concentration of 5% in water.
  • the water-soluble polymer may also in addition to hydroxyethyl functionality also be derivatized with other substituents such as a methyl group, butyl group, or longer hydrophobes having up to 24 carbon atoms.
  • any one of these types of water-soluble polymers are employed as a rheology modifier in a pigmented metering size press paper coatings they would be dosed into the coating at a level to attain a runnable coating viscosity typically of 100-4000 cps.
  • the dosage of rheology modifier employed in practice is typically 0.2-0.8 parts of rheology modifier based upon 100 parts of pigment in the coating. It is reasonable to suggest that a range of 0.05 to 2 parts of the rheology modifier of the present invention could be effective for conveying desirable runnability features to pigmented metering size press coatings.
  • a typical coating formulation would contain about 100 parts pigment, about 10 to about 18 parts binder (i.e., starch and/or latex), about 20 to about 60 % solids.
  • binder i.e., starch and/or latex
  • the solids content can be 50 to 60 %.
  • the HAC or AHAC content in this composition is 0.2 to 0.8 part, which is included in the solids percentage.
  • binder starch and latex (which can be styrene or vinyl based).
  • the pigment in this composition are calcium carbonate and kaolin clay.
  • Tinopal PT Optical brightener agent 0.5
  • ADMIRAL® 3089 FS FPS gave one of the highest opacity, Tappi brightness, and higher K&N Ink absorption, when compared with carboxymethylcellulose (CMC) rheology modifiers in the trial (see Table 3).
  • CMC carboxymethylcellulose
  • nonionic cellulose derivatives that are similar to HEC would also show this same performance, if included into the metering size press application.
  • These latter materials are thought to include water-soluble alkylhydroxyethylcellulose derivatives in general and methylhydroxyethylcellulose (MHEC) ethylhydroxyethylcellulose, (EHEC) and
  • HHEC hydrophobically-modified hydroxyethylcellulose

Landscapes

  • Paper (AREA)

Abstract

Selon l’invention, du papier couché pigmenté est préparé en ajoutant une hydroxyalkylcellulose (HAC) hydrosoluble ayant un fragment alkyle long de 1 à 4 carbones, ou une alkylhydroxyalkylcellulose (AHAC) hydrosoluble ayant un groupement hydrophobe alkyle long de 1 à 24 carbones, à une formulation pigmentée pour couchage par voie humide, en une quantité supérieure ou égale à 0,15 parties de HAC ou de AHAC par rapport à la teneur en pigment du revêtement. On applique ensuite la formulation pigmentée pour couchage par voie humide sur une feuille de papier continue en mouvement, au moyen d'une presse encolleuse doseuse à rouleau. L’utilisation de HAC ou AHAC dans le revêtement pigmenté réduit de manière significative la voltige du revêtement lors de l’application, par rapport à une application témoin sans ajout de HAC ou AHAC.
PCT/US2005/006819 2005-03-02 2005-03-02 Hydroxyalkylcellulose utilisee en tant qu’additif dans des revetements pigmentes pour presse encolleuse doseuse WO2006093497A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/US2005/006819 WO2006093497A1 (fr) 2005-03-02 2005-03-02 Hydroxyalkylcellulose utilisee en tant qu’additif dans des revetements pigmentes pour presse encolleuse doseuse
ES05724378T ES2363016T3 (es) 2005-03-02 2005-03-02 Hidroxialquilcelulosa como aditivo en revestimientos de prensa encoladora de regulación de pigmento.
EP05724378A EP1853762B1 (fr) 2005-03-02 2005-03-02 Hydroxyalkylcellulose utilisee en tant qu additif dans des revetements pigmentes pour presse encolleuse doseuse
AT05724378T ATE509157T1 (de) 2005-03-02 2005-03-02 Hydroxyalkylcellulose als zusatz zu pigmentierten filmpressebeschichtungsstoffen
CA002599883A CA2599883A1 (fr) 2005-03-02 2005-03-02 Hydroxyalkylcellulose utilisee en tant qu'additif dans des revetements pigmentes pour presse encolleuse doseuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2005/006819 WO2006093497A1 (fr) 2005-03-02 2005-03-02 Hydroxyalkylcellulose utilisee en tant qu’additif dans des revetements pigmentes pour presse encolleuse doseuse

Publications (1)

Publication Number Publication Date
WO2006093497A1 true WO2006093497A1 (fr) 2006-09-08

Family

ID=35601831

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/006819 WO2006093497A1 (fr) 2005-03-02 2005-03-02 Hydroxyalkylcellulose utilisee en tant qu’additif dans des revetements pigmentes pour presse encolleuse doseuse

Country Status (5)

Country Link
EP (1) EP1853762B1 (fr)
AT (1) ATE509157T1 (fr)
CA (1) CA2599883A1 (fr)
ES (1) ES2363016T3 (fr)
WO (1) WO2006093497A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090229775A1 (en) * 2008-03-15 2009-09-17 Fushan Zhang Clay slurries and use thereof in pulp and papermaking applications
EP2218821A1 (fr) 2009-02-17 2010-08-18 Lamberti Spa Suspensions aqueuses pour le couchage du papier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651093A1 (fr) * 1993-10-29 1995-05-03 Aqualon Company Composition de revêtement pour papier dont l'épaississant à une efficacité renforcée
EP1467022A1 (fr) * 2002-01-16 2004-10-13 Nippon Paper Industries Co., Ltd. Procede de production de papier couche pour impression

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651093A1 (fr) * 1993-10-29 1995-05-03 Aqualon Company Composition de revêtement pour papier dont l'épaississant à une efficacité renforcée
EP1467022A1 (fr) * 2002-01-16 2004-10-13 Nippon Paper Industries Co., Ltd. Procede de production de papier couche pour impression

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE PAPERCHEM [online] Elsevier Eng. Info. Inc.; 1973, BUROVA, T. ET AL.: "Use of modified hydroxyethylcellulose in coating suspensions", XP002364531, retrieved from DIALOG Database accession no. AB4507057 *
KHIM. TEKNOL. BUMAGI, no. 1, 1973, pages 19 - 23 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090229775A1 (en) * 2008-03-15 2009-09-17 Fushan Zhang Clay slurries and use thereof in pulp and papermaking applications
US8691052B2 (en) * 2008-03-15 2014-04-08 Hercules Incorporated Clay slurries and use thereof in pulp and papermaking applications
EP2218821A1 (fr) 2009-02-17 2010-08-18 Lamberti Spa Suspensions aqueuses pour le couchage du papier

Also Published As

Publication number Publication date
EP1853762B1 (fr) 2011-05-11
CA2599883A1 (fr) 2006-09-08
EP1853762A1 (fr) 2007-11-14
ATE509157T1 (de) 2011-05-15
ES2363016T3 (es) 2011-07-18

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