EP0396789B1 - Procédé de préparation d'un papier antiadhésif recouvert d'un enduit particulier - Google Patents

Procédé de préparation d'un papier antiadhésif recouvert d'un enduit particulier Download PDF

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Publication number
EP0396789B1
EP0396789B1 EP89108274A EP89108274A EP0396789B1 EP 0396789 B1 EP0396789 B1 EP 0396789B1 EP 89108274 A EP89108274 A EP 89108274A EP 89108274 A EP89108274 A EP 89108274A EP 0396789 B1 EP0396789 B1 EP 0396789B1
Authority
EP
European Patent Office
Prior art keywords
platinum
process according
complexes
catalysts
added
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 - Lifetime
Application number
EP89108274A
Other languages
German (de)
English (en)
Other versions
EP0396789A1 (fr
Inventor
Bernd Dr. Ing. Reinhardt
Leif Dipl. Ing. Frilund
Volker Viehmeyer
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.)
Kammerer GmbH
Original Assignee
Kammerer GmbH
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 Kammerer GmbH filed Critical Kammerer GmbH
Priority to AT89108274T priority Critical patent/ATE84087T1/de
Priority to DE8989108274T priority patent/DE58903181D1/de
Priority to EP89108274A priority patent/EP0396789B1/fr
Priority to ES198989108274T priority patent/ES2036746T3/es
Publication of EP0396789A1 publication Critical patent/EP0396789A1/fr
Application granted granted Critical
Publication of EP0396789B1 publication Critical patent/EP0396789B1/fr
Priority to GR920300096T priority patent/GR920300096T1/el
Priority to GR930400643T priority patent/GR3007456T3/el
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • D21H19/824—Paper comprising more than one coating superposed two superposed coatings, both being non-pigmented
    • 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
    • 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
    • D21H27/001—Release paper

Definitions

  • the invention relates to a process for the production of release paper, in which the paper is coated with a suspension of film-forming substances before the application of a silicone coating.
  • Release papers can also be coated with pigment-binder combinations with the application devices already mentioned.
  • pigment-binder combinations mainly latices are used as binders and white pigments such as kaolin and / or calcium carbonate (see “Coating” (1987), No. 10, pp. 366-372 and (1987), No. 11, pp. 396 - 398).
  • aqueous silicone systems emulsions
  • PVA or CMC aqueous film formers and thickeners
  • the silicone resin used always forms the main component, since it primarily influences the adhesive effect of the papers coated in this way with a special purpose (for example baking release papers, sack papers with hydrophobic properties, etc.).
  • the aqueous silicone systems contain organopolysiloxanes, e.g. Polydimethylsiloxanes, to which catalysts, crosslinking agents (e.g. based on methylhydrogen siloxanes), optionally also adhesives (e.g. water-soluble reactive silane esters) and controlled release additives are added (see “Adhesion” (1973), No. 7).
  • organopolysiloxanes e.g. Polydimethylsiloxanes
  • crosslinking agents e.g. based on methylhydrogen siloxanes
  • adhesives e.g. water-soluble reactive silane esters
  • controlled release additives controlled release additives are added (see "Adhesion" (1973), No. 7).
  • the manufacturers of these aqueous silicone systems predominantly already offer the base polymer with crosslinker or catalyst additive (crosslinker or catalyst emulsions).
  • the further components are then added by the processor shortly before use (raw paper coating) in order to achieve the desired
  • the object of the present invention is Release papers with special surface coatings, but without producing any additional abhesive effects, which enable better adhesion and faster crosslinking of subsequent, conventional, separate coatings with a wide variety of silicone resins.
  • This object of producing release papers of the type described at the outset is achieved in that the suspension contains up to 25% (calculated) catalysts for crosslinking the silicone coating in the form of an aqueous emulsion.
  • z. B As a catalyst or as a catalyst component for the aqueous emulsion, z. B. the following substances are used: Finely divided platinum, ruthenium, rhodium, palladium, iridium and compounds or complexes of these elements, in particular platinum halides such as PtCl4 platinum (IV) chloric acid and Na2PtCl n ⁇ 4H2O, platinum-olefin complexes, platinum-alcohol or platinum-alcoholate complexes, Platinum-ether complexes, platinum-aldehyde complexes, platinum-ketone complexes and platinum-vinyl-siloxane complexes; also iron, nickel and cobalt carbonyls.
  • platinum halides such as PtCl4 platinum (IV) chloric acid and Na2PtCl n ⁇ 4H2O
  • platinum-olefin complexes platinum-alcohol or platinum-alcoholate complexes
  • the coated paper was placed on a metal sieve in a forced air oven operated at 150 ° C.
  • the crosslinking time was set differently in order to follow the influence of the catalyst emulsions on the crosslinking and anchoring process.
  • Table 1 only the shortest crosslinking times are recorded, during which complete hardening and anchoring (adhesion) of the silicone layer is still guaranteed.
  • a paper As a reference paper (blank), i.e. a paper without the addition of catalysts, a paper was used which had also gone through the treatment steps described above, but contained no further additives in the PVA / CMC solution.
  • Example 1 The procedure of Example 1 was repeated. After the catalyst emulsion had been added, however, the pH was raised to 9.0 using ammonia. The results of the crosslinking tests are shown in Table 1 below.
  • Example 1 The procedure of Example 1 was repeated, but instead of coating the test paper with the solvent-free silicone system described in part b) of Example 1, a solvent-containing system with the following composition was chosen: 74 parts white spirit 20 parts of base polymer silicone 0.2 parts crosslinker 0.8 parts catalyst The siliconization was carried out analogously to Example 1, part b) using a laboratory doctor device, the silicon application again being approximately 1 g / m 2 (calculated). The shortest networking times determined are shown in Table 1.
  • Example 2 The procedure of Example 2 was repeated. However, the laboratory siliconization was carried out using the solvent-containing silicone systems described in Example 3. The minimum required networking times are shown in Table 1.
  • Example 1 The procedure of Example 1 was repeated. However, instead of 3 g, this time 6 g of catalyst emulsion was added to the solution of 22 g of polyvinyl alcohol and 3 g of carboxymethyl cellulose in 475 g of water. The pH of this mixture was again adjusted to 4.0 with sulfuric acid. The further processing corresponded to the procedure described in Example 1. The results of the crosslinking test are summarized in Table 1.
  • Example 5 The procedure of Example 5 was repeated, but the pH of the coating mixture was raised to 9.0 with ammonia. The results of the crosslinking test are shown in Table 1.
  • Example 5 The procedure of Example 5 was repeated. However, the test paper was coated with a solvent-containing silicone system from ICI. The composition of this coating composition has already been described in Example 3. The results of the crosslinking test are shown in Table 1.
  • Example 6 The procedure of Example 6 was repeated. However, laboratory siliconization was carried out using the solvent-containing silicone system described in Example 3. The shortest networking times required can be found in Table 1.

Landscapes

  • Paper (AREA)
  • Paints Or Removers (AREA)
  • Catalysts (AREA)

Claims (10)

  1. Procédé de préparation de papier anti-adhésif dans lequel le papier est enduit d'une suspension de substance filmogène avant l'application d'un revêtement de silicone, caractérisé en ce que la suspension contient jusqu'à 25% (calculé sur poids sec) de catalyseur pour réticuler l'enduit de silicone, sous forme d'une émulsion aqueuse.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on utilise comme catalyseur du platine, du ruthénium, du palladium, de l'iridium et les composés complexes de ces éléments tels qu'halogénure de platine, acide chloroplatinique et Na₂PtCln·4H₂O, complexe platine-oléfine, complexe platine-alcool ou alcoolate, complexe platine-éther, complexe platine-aldéhyde, complexe platine-cétone et complexe platine-vinyl-siloxane ainsi que les fer-, nickel- et cobalt-carbonyles.
  3. Procédé selon la revendication 2, caractérisé en ce que l'on utilise comme halogénure de platine du tétrachlorure de platine.
  4. Procédé selon les revendications 1 à 3, caractérisé en ce que l'on utilise ces catalyseurs sous forme d'émulsions aqueuses en proportion de 1 à 25% (calculé sur poids sec), des préparations de surface usuelles contenant des substances filmogènes pour les papier anti-adhésifs, seules ou en combinaison et avec une gamme de pH comprise entre 2 et 11.
  5. Procédé selon la revendication 4, caractérisé en ce que les catalyseurs sont ajoutés sous forme d'émulsions aqueuses en proportion allant de 3 à 10% (calculé sur poids sec) et que l'on utilise comme substances filmogènes de l'alcool polyvinylique, de la carboxyméthylcellulose, des dérivés de l'amidon, de l'alginate ou des dispersions de polymères avec une valeur de pH comprise dans la gamme de 4 à 9,5.
  6. Procédé selon les revendications 1 à 5, caractérisé en ce que l'on ajoute à ces catalyseurs, sous forme d'émulsions aqueuses, des masses d'enduction pigmentées formées de liants seuls ou en combinaison avec des pigments blancs, avec une gamme de pH allant de 5 à 11 et, de préférence de 7 à 9,5.
  7. Procédé selon la revendication 6, caractérisé en que les masses d'enduction pigmentées auxquelles les catalyseurs sont ajoutés sous forme de leurs émulsions aqueuses, contiennent comme liants des dispersions de copolymères (latex) à base d'acide acrylique, d'esters d'acide acrylique, d'acrylonitrile, d'acétate de vinyle et de carboxyméthylcellulose.
  8. Procédé selon la revendication 7, caractérisé en ce que l'on ajoute comme pigment blanc dans les masses d'enduction du kaolin, du carbonate de calcium et du dioxyde de titane, seuls ou en combinaison.
  9. Procédé selon les revendications 1 à 8, caractérisé en ce que le revêtement est appliqué sur la surface au moyen des appareils d'application usuels en utilisant une rame de papier déjà préparée, ayant une teneur résiduelle en humidité comprise entre 1 et 14% et, de préférence, entre 2 et 8%.
  10. Utilisation d'un papier anti-adhésif préparé selon le procédé de l'une des revendications 1 à 9, comme matériau d'emballage pour produits collants, pour produits de boulangerie, comme emballage pour denrées alimentaires, pour des stratifiés en matières plastiques, pour les panneaux stratifiés, pour les panneaux de copeaux et pour le secteur des matériaux autocollants.
EP89108274A 1989-05-09 1989-05-09 Procédé de préparation d'un papier antiadhésif recouvert d'un enduit particulier Expired - Lifetime EP0396789B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT89108274T ATE84087T1 (de) 1989-05-09 1989-05-09 Verfahren zur herstellung von trennrohpapieren mit speziellen oberflaechenstrichen.
DE8989108274T DE58903181D1 (de) 1989-05-09 1989-05-09 Verfahren zur herstellung von trennrohpapieren mit speziellen oberflaechenstrichen.
EP89108274A EP0396789B1 (fr) 1989-05-09 1989-05-09 Procédé de préparation d'un papier antiadhésif recouvert d'un enduit particulier
ES198989108274T ES2036746T3 (es) 1989-05-09 1989-05-09 Procedimiento de preparar papeles soporte de separacion con recubrimientos especiales de superficie.
GR920300096T GR920300096T1 (fr) 1989-05-09 1993-02-17
GR930400643T GR3007456T3 (fr) 1989-05-09 1993-03-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89108274A EP0396789B1 (fr) 1989-05-09 1989-05-09 Procédé de préparation d'un papier antiadhésif recouvert d'un enduit particulier

Publications (2)

Publication Number Publication Date
EP0396789A1 EP0396789A1 (fr) 1990-11-14
EP0396789B1 true EP0396789B1 (fr) 1992-12-30

Family

ID=8201330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108274A Expired - Lifetime EP0396789B1 (fr) 1989-05-09 1989-05-09 Procédé de préparation d'un papier antiadhésif recouvert d'un enduit particulier

Country Status (5)

Country Link
EP (1) EP0396789B1 (fr)
AT (1) ATE84087T1 (fr)
DE (1) DE58903181D1 (fr)
ES (1) ES2036746T3 (fr)
GR (2) GR920300096T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697484A1 (fr) 1994-07-21 1996-02-21 Kämmerer Gmbh Papier séparable ayant une couche d'ancrage contenant du silicate

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19512663A1 (de) * 1995-04-05 1996-10-10 Kaemmerer Gmbh Trennrohpapiere mit Pigmentstrichen auf der Basis von Aluminiumhydroxiden
FI19992251A (fi) * 1999-10-18 2001-04-19 Upm Kymmene Corp Menetelmä irrokeainepäällysteen aikaansaamiseksi, irrokemateriaali ja irrokemateriaalin taustamateriaali
FI116087B (fi) * 2000-01-26 2005-09-15 Upm Kymmene Corp Pohjapaperi, menetelmä sen valmistamiseksi ja irrokepaperi

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE536477A (fr) * 1954-03-15 1900-01-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697484A1 (fr) 1994-07-21 1996-02-21 Kämmerer Gmbh Papier séparable ayant une couche d'ancrage contenant du silicate
US5807781A (en) * 1994-07-21 1998-09-15 Kammerer Gmbh Release base paper having silicate-containing primer coats

Also Published As

Publication number Publication date
DE58903181D1 (de) 1993-02-11
ATE84087T1 (de) 1993-01-15
EP0396789A1 (fr) 1990-11-14
GR3007456T3 (fr) 1993-07-30
ES2036746T3 (es) 1993-06-01
GR920300096T1 (fr) 1993-02-17

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