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EP0396789A1 - 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

Info

Publication number
EP0396789A1
EP0396789A1 EP89108274A EP89108274A EP0396789A1 EP 0396789 A1 EP0396789 A1 EP 0396789A1 EP 89108274 A EP89108274 A EP 89108274A EP 89108274 A EP89108274 A EP 89108274A EP 0396789 A1 EP0396789 A1 EP 0396789A1
Authority
EP
European Patent Office
Prior art keywords
platinum
complexes
paper
catalyst
proportions
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.)
Granted
Application number
EP89108274A
Other languages
German (de)
English (en)
Other versions
EP0396789B1 (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 EP89108274A priority Critical patent/EP0396789B1/fr
Priority to AT89108274T priority patent/ATE84087T1/de
Priority to ES198989108274T priority patent/ES2036746T3/es
Priority to DE8989108274T priority patent/DE58903181D1/de
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

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
    • D21H19/80—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 with special surface coats (primer coats) inside or outside the paper machine.
  • Release papers can also be coated with pigment-binder combinations using 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).
  • the aqueous silicone systems contain organopolysiloxanes, e.g. Polydimethylsiloxanes, to which catalysts, crosslinking agents (e.g. based on methyl hydrogen 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 methyl hydrogen siloxanes
  • adhesives e.g. water-soluble reactive silane esters
  • controlled release additives e.g. water-soluble reactive silane esters
  • the object of the present invention is within the paper machine release paper with special surface coatings, but without producing any additional abhesive effects, which enable better adhesion and faster crosslinking of subsequent customary separate coatings with a wide variety of silicone resins.
  • the object is achieved in that a suspension of film-forming substances, optionally with the addition of white pigments, which contains up to 25% (calculated) catalyst in the form of an aqueous emulsion is applied to the paper web inside or outside the paper machine by means of conventional application units.
  • the following substances can be used as the catalyst component for the aqueous emulsion: 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
  • platinum ether complexes platinum aldehyde complexes
  • platinum ketone complexes platinum vinyl siloxane complexe
  • a mixture of 22 g of polyvinyl alcohol and 3 g of carboxymethyl cellulose in 475 g of water is prepared in a glass container and heated to 90 ° C. in a water bath.
  • the cooking time of the PVA-CMC suspension is 20 minutes, with the CMC and PVA completely dissolving in the water.
  • 3 g of at least 3 Si-bonded hydrogen atoms per molecule having organopolysiloxane are added as the base polymer with the addition of Pt catalyst in the form of a 40% emulsion.
  • the pH value of this mixture was adjusted to 4.0 using sulfuric acid.
  • the dispersion produced in this way is applied with a laboratory size press to unsatinated silicone base paper with a basis weight of 66 g / m2.
  • the application weight is about 1.5 g / m2 (calculated).
  • the uncoated base paper had a porosity according to Schopper of approx. 60 ccm3 / min and a degree of sizing according to Cobb-Unger of 50 g / m2. After drying and rewetting, the paper treated with it was satinized in a two-roll laboratory calender.
  • the line pressure was 4000 dN / cm.
  • the surface temperature of the steel roller was 100 ° C.
  • the paper thus obtained was siliconized in a laboratory process.
  • the siliconization was carried out with a KCC 302 squeegee applicator, which uses various wire-wrapped metal rods to apply the respective silicone to the paper sheets at a constant speed.
  • a conventional solvent-free polysiloxane system with the following composition was used for the silicone coating: 100 parts of base polymer silicone from Wacker 80 parts white spirit (boiling range 60-80 ° C) 2.5 parts of crosslinker 1.0 part catalyst The amount of silicone applied was about 1 g / m2 (calculated).
  • the coated paper was placed on a metal sieve in a circulating 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 below, only the shortest crosslinking times are recorded, during which complete hardening and anchoring (adhesion) of the silicone layer is still guaranteed.
  • the paper samples hardened at different times were immediately subjected to a scratch test, with the finger being rubbed 8-10 times over the silicone film. The pressure is selected so that the fingertip heats up significantly when rubbed. A disturbance in the silicone coating shows itself in the form of rubbed off beads ("rub off”) and as a matt spot ("smear”) if you look at the sheet of paper under the bevel.
  • 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 adding the catalyst emulsion, 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 amounting to 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, the 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)
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
EP89108274A EP0396789B1 (fr) 1989-05-09 1989-05-09 Procédé de préparation d'un papier antiadhésif recouvert d'un enduit particulier
AT89108274T ATE84087T1 (de) 1989-05-09 1989-05-09 Verfahren zur herstellung von trennrohpapieren mit speziellen oberflaechenstrichen.
ES198989108274T ES2036746T3 (es) 1989-05-09 1989-05-09 Procedimiento de preparar papeles soporte de separacion con recubrimientos especiales de superficie.
DE8989108274T DE58903181D1 (de) 1989-05-09 1989-05-09 Verfahren zur herstellung von trennrohpapieren mit speziellen oberflaechenstrichen.
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 true EP0396789A1 (fr) 1990-11-14
EP0396789B1 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425737A1 (de) * 1994-07-21 1996-02-01 Kaemmerer Gmbh Trennrohpapier mit silikathaltigen Primerstrichen
DE19512663A1 (de) * 1995-04-05 1996-10-10 Kaemmerer Gmbh Trennrohpapiere mit Pigmentstrichen auf der Basis von Aluminiumhydroxiden
WO2001029314A1 (fr) * 1999-10-18 2001-04-26 Upm-Kymmene Corporation Procede d'obtention d'un materiau anti-adhesif, materiau anti-adhesif et matiere premiere du materiau anti-adhesif
WO2001055507A1 (fr) * 2000-01-26 2001-08-02 Upm-Kymmene Corporation Papier de base, procede de production de ce dernier et papier antiadherant

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803613A (en) * 1954-03-15 1957-08-20 Gen Electric Organopolysiloxane composition for rendering cellulosic materials nonadherent and method of applying same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803613A (en) * 1954-03-15 1957-08-20 Gen Electric Organopolysiloxane composition for rendering cellulosic materials nonadherent and method of applying same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ABIPC, Band 57, Nr. 6, Dezember 1986, Seite 7256-63, Zusammenfassung 7262; J. BATHA et al.: "Silicone coating of paper with aqueous emulsions" *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425737A1 (de) * 1994-07-21 1996-02-01 Kaemmerer Gmbh Trennrohpapier mit silikathaltigen Primerstrichen
EP0697484A1 (fr) * 1994-07-21 1996-02-21 Kämmerer Gmbh Papier séparable ayant une couche d'ancrage contenant du silicate
DE4425737C2 (de) * 1994-07-21 1998-01-08 Kaemmerer Gmbh Trennrohpapier mit silikathaltigen Primerstrichen und damit hergestelltes Trennpapier
DE19512663A1 (de) * 1995-04-05 1996-10-10 Kaemmerer Gmbh Trennrohpapiere mit Pigmentstrichen auf der Basis von Aluminiumhydroxiden
WO2001029314A1 (fr) * 1999-10-18 2001-04-26 Upm-Kymmene Corporation Procede d'obtention d'un materiau anti-adhesif, materiau anti-adhesif et matiere premiere du materiau anti-adhesif
WO2001055507A1 (fr) * 2000-01-26 2001-08-02 Upm-Kymmene Corporation Papier de base, procede de production de ce dernier et papier antiadherant

Also Published As

Publication number Publication date
GR920300096T1 (fr) 1993-02-17
ES2036746T3 (es) 1993-06-01
ATE84087T1 (de) 1993-01-15
EP0396789B1 (fr) 1992-12-30
DE58903181D1 (de) 1993-02-11
GR3007456T3 (fr) 1993-07-30

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