EP1602784B1 - Procédé de fabrication d'un stratifié décoratif - Google Patents

Procédé de fabrication d'un stratifié décoratif Download PDF

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Publication number
EP1602784B1
EP1602784B1 EP20050252241 EP05252241A EP1602784B1 EP 1602784 B1 EP1602784 B1 EP 1602784B1 EP 20050252241 EP20050252241 EP 20050252241 EP 05252241 A EP05252241 A EP 05252241A EP 1602784 B1 EP1602784 B1 EP 1602784B1
Authority
EP
European Patent Office
Prior art keywords
weight
stage polymer
polymer
paper
shell
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.)
Not-in-force
Application number
EP20050252241
Other languages
German (de)
English (en)
Other versions
EP1602784A2 (fr
EP1602784A3 (fr
Inventor
James T. Brown
John Robert Haigh
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.)
Rohm and Haas Co
Original Assignee
Rohm and Haas Co
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 Rohm and Haas Co filed Critical Rohm and Haas Co
Priority to EP20050252241 priority Critical patent/EP1602784B1/fr
Publication of EP1602784A2 publication Critical patent/EP1602784A2/fr
Publication of EP1602784A3 publication Critical patent/EP1602784A3/fr
Application granted granted Critical
Publication of EP1602784B1 publication Critical patent/EP1602784B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
    • 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
    • D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads
    • 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

Definitions

  • Voided, or hollow emulsion polymers are generally prepared by swelling a multi-stage polymer, having a core and a shell, in such a way that one or more voids form in the interior of the emulsion polymer particle.
  • Hollow emulsion polymers are often used in paints, coatings, inks, sunscreens, paper manufacture, and several other industrial arenas. In the paper industry, hollow emulsion polymers are used to make the surface of the paper, among other things, smoother, brighter, and more opaque. Additional benefits of hollow sphere polymers is that, when used alone, or in combination with costly opacifying pigments, such as titanium dioxide, a more cost effective system is obtainable.
  • the paper typically utilized during the manufacture of decorative laminates has a high pigment content.
  • the acid-functional monoethylenically unsaturated monomer is preferably added to the polymerization of the shell stage polymer over the 100% of the total shell stage monomer feed, based on the total weight of the shell stage monomer feed, more preferably over the first 50% of the feed, even more preferably over the first 25% of the feed, and most preferably over the first 10% of the feed.
  • seed polymer is used to refer to an aqueous emulsion polymer dispersion, which may be the dispersion containing the first-formed polymer stage, or it may be the emulsion polymer dispersion obtained at the end of any subsequent stage, except the final stage of the sequential polymerization.
  • a core stage polymer which is intended to be encapsulated by one, or more, subsequent stages of emulsion polymerization, may itself be termed a seed polymer for the next stage.
  • a seed polymer may be utilized to form the nuclei on which the core stage polymer is formed.
  • a core having a molecular weight in the lower part of the range such as from 500,000 down to as low as about 20,000
  • a chain transfer agent such as 0.05% to 2% or more thereof, examples being alkyl mercaptans, such as sec-butyl mercaptan.
  • a composition containing the hollow sphere polymer is incorporated into a decorative laminate paper during the wet-end formation of the decorative laminate paper.
  • wet-end is meant herein, the part of the decorative laminate paper processing, during which a predominantly cellulosic fiber pulp slurry is formed into a wet sheet on a paper machine, by techniques that are well known in the art.
  • the hollow sphere polymer and at least one pigment, along with other ingredients, as necessary, are added to, and mixed with the slurry, which is then formed into a wet sheet of paper that contains, or incorporates, the hollow sphere polymer. Any suitable pigment may be used, however titanium dioxide is preferred.
  • Typical temperatures applied to the crosslinking resin-impregnated decorative laminate paper are in the range of from 100°C to 300°C, preferably from 125°C to 250°C, more preferably from 140°C to 200°C.
  • the resulting decorative laminate has improved opacity, above that obtainable in a decorative laminate prepared utilizing only a pigment, as well as lower cost, where a costly pigment, such as titanium dioxide, is used.
  • the paper sample thus formed is dried in an oven at 95°C at 50% relative humidity for 10 minutes. This drying process is repeated at a range of temperatures (50 to 90°C), relative humidities (20 to 80%), and drying times (2 to 20 minutes).

Landscapes

  • Graft Or Block Polymers (AREA)
  • Laminated Bodies (AREA)

Claims (7)

  1. Procédé de préparation d'un stratifié décoratif comprenant les étapes de :
    (I) préparation d'un papier par :
    (a) fourniture d'un polymère à sphères creuses produit par :
    i. formation d'un polymère de stade de noyau par polymérisation d'au moins un monomère éthyléniquement insaturé contenant une fonctionnalité acide,
    ii. encapsulation dudit polymère de stade de noyau avec un polymère de stade d'enveloppe, par polymérisation en émulsion d'au moins un monomère éthyléniquement insaturé en présence dudit polymère de stade de noyau,
    où ledit polymère de stade d'enveloppe permet la pénétration d'une base fixée ou permanente,
    iii. mise en contact des particules de polymère multi-stade résultantes avec une base fixée ou permanente,
    où (1) ledit polymère de stade d'enveloppe comprend au moins 1 % de monomère à fonctionnalité acide, ou (2) ladite mise en contact a lieu en présence de solvant ;
    (b) mise en contact dudit papier avec une composition comprenant ledit polymère à sphères creuses, et au moins un pigment ; et
    (c) séchage dudit papier ;
    (II) imprégnation dudit papier avec une résine réticulante ;
    (III) application d'une pression audit papier ; et
    (IV) exposition dudit papier à des températures de 100°C à 300°C pour former le stratifié décoratif.
  2. Procédé selon la revendication 1, où ledit polymère de stade de noyau est formé par polymérisation d'environ 5 % en poids à environ 100 % en poids, sur la base du poids total du polymère de stade de noyau, dudit monomère éthyléniquement insaturé contenant une fonctionnalité acide, et de 0 % en poids à environ 95 % en poids, sur la base du poids total du polymère de stade de noyau, d'au moins un monomère monoéthyléniquement insaturé non ionique ;
    où ledit polymère de stade d'enveloppe est formé par polymérisation d'environ 90 % en poids à environ 99,9 % en poids, sur la base du poids total du polymère de stade d'enveloppe, d'au moins un monomère monoéthyléniquement insaturé non ionique, et d'environ 0,1 % en poids à environ 10 % en poids, sur la base du poids total du polymère de stade d'enveloppe, d'un monomère monoéthyléniquement insaturé à fonctionnalité acide ; et
    où ledit monomère monoéthyléniquement insaturé à fonctionnalité acide est ajouté à la polymérisation dudit polymère de stade d'enveloppe sur les 100 % de l'alimentation en monomères de stade d'enveloppe totale, quand la taille de particule dudit polymère de stade de noyau est d'environ 130 nm à environ 2,0 µm.
  3. Procédé selon la revendication 1, où ledit polymère de stade de noyau est formé par polymérisation d'environ 5 % en poids à environ 100 % en poids, sur la base du poids total du polymère de stade de noyau, dudit monomère éthyléniquement insaturé contenant une fonctionnalité acide, et de 0 % en poids à environ 95 % en poids, sur la base du poids total dudit polymère de stade de noyau, d'au moins un monomère monoéthyléniquement insaturé non ionique ;
    où ledit polymère de stade d'enveloppe est formé par polymérisation d'environ 90 % en poids à environ 99,9 % en poids, sur la base du poids total du polymère de stade d'enveloppe, d'au moins un monomère monoéthyléniquement insaturé non ionique, et d'environ 0,1 % en poids à environ 10 % en poids, sur la base du poids total du polymère de stade d'enveloppe, d'un monomère monoéthyléniquement insaturé à fonctionnalité acide ; et
    où ledit monomère monoéthyléniquement insaturé à fonctionnalité acide est ajouté à la polymérisation dudit polymère de stade d'enveloppe sur les 50 premiers % de l'alimentation en monomères de stade d'enveloppe totale, quand la taille de particule dudit polymère de stade de noyau est inférieure à environ 130 nm.
  4. Procédé selon la revendication 1, où ledit polymère de stade d'enveloppe est réticulé.
  5. Procédé selon la revendication 1, où ladite mise en contact dudit papier comprend l'incorporation de ladite composition dans ledit papier pendant la formation dudit papier à l'extrémité humide.
  6. Procédé selon la revendication 1, où ladite mise en contact dudit papier comprend le revêtement dudit papier avec ladite composition.
  7. Stratifié décoratif formé par le procédé selon l'une quelconque des revendications 1-6.
EP20050252241 2004-04-23 2005-04-09 Procédé de fabrication d'un stratifié décoratif Not-in-force EP1602784B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20050252241 EP1602784B1 (fr) 2004-04-23 2005-04-09 Procédé de fabrication d'un stratifié décoratif

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04291068 2004-04-23
EP04291068 2004-04-23
EP20050252241 EP1602784B1 (fr) 2004-04-23 2005-04-09 Procédé de fabrication d'un stratifié décoratif

Publications (3)

Publication Number Publication Date
EP1602784A2 EP1602784A2 (fr) 2005-12-07
EP1602784A3 EP1602784A3 (fr) 2009-05-13
EP1602784B1 true EP1602784B1 (fr) 2010-10-13

Family

ID=35261980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050252241 Not-in-force EP1602784B1 (fr) 2004-04-23 2005-04-09 Procédé de fabrication d'un stratifié décoratif

Country Status (1)

Country Link
EP (1) EP1602784B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1632537B1 (fr) * 2004-09-02 2013-03-13 Rohm And Haas Company Méthode pour l'usage de sphères creuses polymère

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594363A (en) * 1985-01-11 1986-06-10 Rohm And Haas Company Production of core-sheath polymer particles containing voids, resulting product and use
US4726986A (en) * 1986-09-17 1988-02-23 Westinghouse Electric Corp. Decorative laminates having a thick chemical resistant outer layer
AU2697899A (en) * 1998-05-18 1999-11-25 Rohm And Haas Company Hollow sphere organic pigment for paper or paper coatings

Also Published As

Publication number Publication date
EP1602784A2 (fr) 2005-12-07
EP1602784A3 (fr) 2009-05-13

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